instruction manual for light duty commercial power direct vent gas

Instruction Manual forLight Duty CommercialPower Direct Vent Gas Water Heaters

ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROMWHOM THE WATER HEATER WAS PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE TO THECOMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER.

–Do not store or use gasoline or otherflammable vapors and liquids in the vicinityof this or any other appliance.

–WHAT TO DO IF YOU SMELL GAS• Do not try to light any appliance.• Do not touch any electrical switch; do not

use any phone in your building.• Immediately call your gas supplier from a

neighbor's phone. Follow the gas supplier'sinstructions.

• If you cannot reach your gas supplier, callthe fire department.

–Installation and service must be performedby a qualified installer, service agency or thegas supplier.

WARNING: If the information in theseinstructions are not followed exactly, a fireor explosion may result, causing propertydamage, personal injury or death.

Improper installation, adjustment, alter-ation, service or maintenance can causeDEATH, SERIOUS BODILY INJURY, ORPROPERTY DAMAGE. Refer to this manualfor assistance or consult the local gas utilityfor further information.

WARNING

Flammable vapors may be drawn by air cur-rents from other areas of the structure tothis appliance.

WARNING

READ THE GENERAL SAFETY SECTIONBEGINNING ON INSIDE COVER AND THENTHIS ENTIRE MANUAL BEFORE INSTALLINGOR OPERATING THIS WATER HEATER.

WARNING

Save this Manual for Future Reference.

For Your Safety AN ODORANT IS ADDED TO THE GASUSED BY THIS WATER HEATER

0002917270-1

General Safety

2

WARNINGWATER HEATERS EQUIPPED FOR ONE TYPE GAS ONLY: Thiswater heater is equipped for one type gas only. Check the modelrating plate near the gas control valve for the correct gas. DO NOTUSE THIS WATER HEATER WITH ANY GAS OTHER THAN THEONE SHOWN ON THE MODEL RATING PLATE. Failure to use thecorrect gas can cause problems which can result in DEATH, SERI-OUS BODILY INJURY, OR PROPERTY DAMAGE. If you have anyquestions or doubts consult your gas supplier or local utility.

WARNINGA fire can start if combustible materials such as clothing, cleaningmaterials, or flammable liquids are placed against or next to thewater heater.

WARNINGINSTALLATIONS IN AREAS WHERE FLAMMABLE LIQUIDS(VAPORS) ARE LIKELY TO BE PRESENT OR STORED (GARAGES,STORAGE, AND UTILITY AREAS, ETC): Flammable liquids (such asgasoline, solvents, propane (LP) or butane, etc.), all of which emitflammable vapors, may be improperly stored or used in such areas.The gas water heater ignitor or main burner can ignite such vapors.The resulting flashback and fire can cause death or serious burns toanyone in the area, as well as property damage.If installation in such areas is your only option, then the installationmust be accomplished in a way that the ignitor and main burnerflame are elevated from the floor at least 18 inches. While this mayreduce the chances of flammable vapors from a floor spill beingignited, gasoline and other flammable substances should never bestored or used in the same room or area containing a gas waterheater or other open flame or spark producing appliance. NOTE: Flammable vapors may be drawn by air currents from otherareas of the structure to the appliance.

WARNINGHOTTER WATER CAN SCALD: Water heaters are intended to pro-duce hot water. Water heated to a temperature which will satisfyclothes washing, dish washing, and other sanitizing needs can scaldand permanently injure you upon contact. Some people are morelikely to be permanently injured by hot water than others. Theseinclude the elderly, children, the infirm, or physically/mentallyhandicapped. If anyone using hot water in your home fits into oneof these groups or if there is a local code or state law requiring acertain temperature water at the hot water tap, then you must takespecial precautions. In addition to using the lowest possible tem-perature setting that satisfies your hot water needs, some type oftempering device, such as a mixing valve, should be used at the hotwater taps used by these people or at the water heater. Mixingvalves are available at plumbing supply or hardware stores. Followmanufacturers instructions for installation of the valves. Beforechanging the factory setting on the thermostat, read the“Temperature Regulation” section in this manual.

WARNINGBEFORE LIGHTING [PROPANE (L.P.) GAS WATER HEATERS]:Propane (L.P.) gas is heavier than air. Should there be a leak in thesystem, the gas will settle near the ground. Basements or crawlspaces, closets and areas below ground level will serve as pocketsfor the accumulation of this gas. Before attempting to operate thewater heater or turning on a nearby electrical light switch, be abso-lutely sure there is no accumulated gas in the area. Search for odorof gas by sniffing at ground level in the vicinity of the appliance. Ifodor is detected, follow steps indicated at “For Your Safety” on thecover page of this manual then leave the premises.

WARNINGImproper installation, adjustment, alteration, service or main-tenance can cause DEATH, SERIOUS BODILY INJURY, ORPROPERTY DAMAGE. Refer to this manual or consult yourlocal gas utility for further assistance.

WARNINGAt the time of manufacture this water heater was providedwith a combination temperature-pressure relief valve certifiedby a nationally recognized testing laboratory that maintainsperiodic inspection of production of listed equipment or mate-rials, as meeting the requirements for Relief Valves andAutomatic Gas Shutoff Devices for Hot Water Supply Systems,and the latest edition of ANSI Z21.22 and the code require-ments of ASME. If replaced, the valve must meet the require-ments of local codes, but not less than a combination temper-ature and pressure relief valve certified as meeting the require-ments for Relief Valves and Automatic Gas Shutoff Devices forHot Water Supply Systems, ANSI Z21.22 by a nationally rec-ognized testing laboratory that maintains periodic inspectionof production of listed equipment or materials.The valve must be marked with a maximum set pressure notto exceed the marked hydrostatic working pressure of thewater heater (150 lbs. p.s.i.) and a discharge capacity not lessthan the water heater input rate as shown on the model ratingplate. (Electric heaters - watts divided by 1000 x 3412 equalBTU/Hr. rate.)Your local jurisdictional authority, while mandating the use ofa temperature-pressure relief valve complying with ANSIZ21.22 and ASME, may require a valve model different fromthe one furnished with the water heater.Compliance with such local requirements must be satisfied bythe installer or end user of the water heater with a locally pre-scribed temperature-pressure relief valve installed in the des-ignated opening in the water heater in place of the factory fur-nished valve.For safe operation of the water heater, the relief valve mustnot be removed from it’s designated opening or plugged.The temperature-pressure relief valve must be installed direct-ly into the fitting of the water heater designated for the reliefvalve. Position the valve downward and provide tubing so thatany discharge will exit only within 6 inches above, or at anydistance below the structural floor. Be certain that no contactis made with any live electrical part. The discharge openingmust not be blocked or reduced in size under any circum-stances. Excessive length, over 30 feet, or use of more thanfour elbows can cause restriction and reduce the dischargecapacity of the valve.No valve or other obstruction is to be placed between therelief valve and the tank. Do not connect tubing directly todischarge drain unless a 6″″ air gap is provided. To preventbodily injury, hazard to life, or property damage, the reliefvalve must be allowed to discharge water in quantities shouldcircumstances demand. If the discharge pipe is not connect-ed to a drain or other suitable means, the water flow maycause property damage.The Discharge Pipe:—Must not be smaller in size than the outlet pipe size of the

valve, or have any reducing couplings or other restrictions.—Must not be plugged or blocked.—Must be of material listed for hot water distribution.—Must be installed so as to allow complete drainage of both

the temperature-pressure relief valve, and the dischargepipe.

—Must terminate at an adequate drain.—Must not have any valve between the relief valve and tank.

General Safety (cont’d)

3

WARNINGThis water heater must not be installed directly on carpeting. Car-peting must be protected by a metal or wood panel beneath the ap-pliance extending beyond the full width and depth of the applianceby at least 3 inches (76.2mm) in any direction, or if the appliance isinstalled in an alcove or closet, the entire floor must be covered bythe panel. Failure to heed this warning may result in a fire hazard.

WARNINGDo not install in a confined area such as a closet, unless you provideventilation air as shown in the “Locating The New Water Heater”section. Never obstruct the flow of ventilation air. If you have anydoubts or questions at all, call your gas company. Failure to pro-vide ventilation air can result in a fire or explosion and can causeDEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE.

WARNINGIf this water heater will be used in beauty shops, barber shops, clean-ing establishments, or self-service laundries with dry cleaning equip-ment, it is imperative that the water heater or water heaters be in-stalled so that combustion and ventilation air be taken from outsidethese areas. Refer to the “Locating The New Water Heater” section ofthis manual and also the latest edition of the National Fuel Gas Code,ANSI Z223.1, also referred to as NFPA 54 for specifics provided con-cerning air required.

WARNINGThe power direct vent water heater requires its own (separate) ventingsystem. It cannot be connected to an existing vent pipe or chimney. Itmust be terminated to the outdoors. Failure to properly install theventing system can result in asphyxiation, a fire or explosion and cancause DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE.

WARNINGNo vent damper installation is compatible with this power ventedwater heater design. No vent damper, whether it is operated ther-mally or otherwise is to be installed on this power vented waterheater. Alteration of any part of the factory-furnished vent assemblycould result in improper operation due to restriction of flue gases,spillage of flue gases and may cause carbon monoxide poisoning.

WARNING1. The appliance and its individual shutoff valve must be discon-

nected from the gas supply piping system during any pressuretesting of the gas system at test pressures in excess of 1⁄2 poundper square inch (3.5kPa).

2. The appliance must be isolated from the gas supply piping sys-tem by closing its individual manual shutoff valve during anypressure testing of the gas supply piping system at test pressuresequal or less than 1⁄2 pound per square inch (3.5kPa).

WARNINGSoot build-up indicates a problem that requires correction beforefurther use. Turn “OFF” gas to water heater and leave “OFF” untilrepairs are made, because failure to correct the cause of the sootingcan result in a fire or explosion causing DEATH, SERIOUS BODILYINJURY, OR PROPERTY DAMAGE.

WARNINGThe water heater must be properly vented outdoors. Never operatethe water heater unless it is vented to the outdoors and has adequate airsupply to avoid risks of improper operation, explosion or asphyxiation.

WARNINGVent termination must not be within 4 feet of any items such as gasmeters, gas valves or other gas regulating equipment.

WARNINGObstructed or deteriorated vent systems may present a serioushealth risk or asphyxiation.

WARNINGChemical vapor corrosion of the flue and vent system may occur ifair for combustion contains certain chemical vapors. Spray can pro-pellants, cleaning solvents, refrigerator and air conditioner refrig-erants, swimming pool chemicals, calcium and sodium chloride,waxes, bleach, and process chemicals are typical compounds whichare potentially corrosive.

WARNINGMinimum clearances between the water heater and combustibleand non-combustible construction are: 0 inches from sides, 0 inch-es from back, 6 inches from front of jacket to closet door and 12inches from top of jacket to combustible and non-combustiblematerial. Minimum vent clearance: 0 inches. Provide 24 inchesfront clearance for servicing and adequate clearance between thejacket top and ceiling for servicing the flue area.

WARNINGHYDROGEN GAS: Hydrogen gas can be produced in a hot watersystem that has not been used for a long period of time (generallytwo weeks or more). Hydrogen gas is extremely flammable andexplosive. To prevent the possibility of injury under these condi-tions, we recommend the hot water faucet be opened for severalminutes at the kitchen sink before any electrical appliances whichare connected to the hot water system are used (such as a dish-washer or washing machine). If hydrogen gas is present, there willprobably be an unusual sound similar to air escaping through thepipe as the hot water faucet is opened. There must be no smoking oropen flame near the faucet at the time it is open.

WARNINGINSULATING JACKETS: When installing an external water heaterinsulation jacket on a gas water heater:a. DO NOT cover the temperature-pressure relief valve.b. DO NOT put insulation over any part of the top of the gas water

heater.c. DO NOT put insulation over the gas control valve or gas con-

trol valve/burner cover, or any access areas to the burner.d. DO NOT let insulation around the gas water heater to get with-

in 8 inches of the floor (air must get to the burner).e. DO NOT cover or remove operating instructions, and safety

related warning labels and materials affixed to the water heater.Failure to heed this will result in the possibility of a fire or explosion.

WARNINGFlood damage to a water heater may not be readily visible or imme-diately detectible. However, over a period of time a flooded waterheater will create dangerous conditions which can cause DEATH,SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. Call a qual-ified service technician or contractor to replace a flooded waterheater. Do not attempt to repair the unit! It must be replaced!

CAUTIONWATER HEATERS EVENTUALLY LEAK: Installation of the waterheater must be accomplished in such a manner that if the tank orany connections should leak, the flow of water will not cause dam-age to the structure. For this reason, it is not advisable to install thewater heater in an attic or upper floor. When such locations cannotbe avoided, a suitable drain pan should be installed under the waterheater. Drain pans are available at your local hardware store. Sucha drain pan must have a minimum length and width of at least 2inches greater than the water heater dimensions and must be pipedto an adequate drain. Drain pan depth must allow for access to theouter doors for servicing the ignitor and burner. Under no circum-stances is the manufacturer to be held liable for any water damage inconnection with this water heater.

General Safety ...............................................................................................................................2-3

Table of Contents .........................................................................................................................4

Introduction .........................................................................................................................................5

Preparing for the New Installation ..................................................................5

Typical Installation .....................................................................................................................6

Locating the New Water Heater ......................................................................7-9Facts to Consider About Location.......................................................................................................................7-8Combustion Air and Ventilation .........................................................................................................................8-9Venting Clearances ..........................................................................................................................................8-9

Air for Ventilation for Appliances Located in Confined Spaces ..............................................................................9

Installing the New Water Heater ................................................................10-20Water Piping .......................................................................................................................................................10Temperature-Pressure Relief Valve ......................................................................................................................11Filling the Water Heater ......................................................................................................................................12Wiring............................................................................................................................................................12-13Optional Field Installed Wiring ....................................................................................................................12-13Wiring Diagram.................................................................................................................................................13

Venting ..........................................................................................................................................................13-18Gas Piping......................................................................................................................................................18-19Installation Checklist ...........................................................................................................................................20

Operating ..........................................................................................................................................21-23

Temperature Regulation ..................................................................................................24

For Your Information ......................................................................................................25-26Start Up Conditions .............................................................................................................................................25Condensation ....................................................................................................................................................25Smoke/Odor ......................................................................................................................................................25Thermal Expansion............................................................................................................................................25Strange Sounds..................................................................................................................................................25

Operational Conditions ..................................................................................................................................25-26Smelly Water.....................................................................................................................................................25"Air” In Hot Water Faucets ................................................................................................................................26High Temperature Shut Off System....................................................................................................................26Venting Manual Reset Switch ............................................................................................................................26Not Enough or No Hot Water ............................................................................................................................26Water Is Too Hot ...............................................................................................................................................26

Periodic Maintenance ....................................................................................................27-28Venting System Inspection...................................................................................................................................27Burner Inspection ................................................................................................................................................27Burner Cleaning ..................................................................................................................................................27L.P. Gas Control Valve & Burner Assembly Replacement Information .................................................................27Housekeeping .....................................................................................................................................................28Oiling Instructions ...............................................................................................................................................28Temperature-Pressure Relief Valve Operation......................................................................................................28Draining..............................................................................................................................................................28Service ................................................................................................................................................................28

Leakage Checkpoints............................................................................................................29

Troubleshooting.......................................................................................................................30-33

Installation Diagrams .....................................................................................................34-35

Repair Parts ....................................................................................................................................36-37

Table of Contents

4

Abbreviations Found In This Instruction ManualCSA - Canadian Standards AssociationANSI - American National Standards InstituteNFPA - National Fire Protection Association

3. If after reading this manual you have any questions or donot understand any portion of the instructions, call thelocal gas utility or the manufacturer whose nameappears on the rating plate.

4. Carefully plan the place where you are going to put thewater heater. Correct combustion, vent action, andintake air and exhaust vent pipe installation are veryimportant in preventing death from possible carbonmonoxide poisoning and fires.Examine the location to ensure the water heater com-plies with the “Locating the New Water Heater” sectionin this manual.

5. For California installation this water heater must be braced,anchored, or strapped to avoid falling or moving duringan earthquake. See instructions for correct installation pro-cedures. Instructions may be obtained from your localdealer, wholesaler, public utilities or California Office ofthe State Architect, 400 P Street, Sacramento, CA 95814.

6. Massachusetts Code requires this water heater to beinstalled in accordance with Massachusetts 248-CMR2.00: State Plumbing Code and 248-CMR 5.00.

7. Complies with SCAQMD rule #1121 and districts havingequivalent NOx requirements.

IntroductionThank You for purchasing this water heater. Wheninstalled according to State and Local Codes and main-tained according to the manufacturers instructions, it shouldgive you years of trouble free service.

1. Read the “General Safety” section, pages 2 and 3 of thismanual first and then the entire manual carefully. If youdon’t follow the safety rules, the water heater will notoperate properly. It could cause DEATH, SERIOUSBODILY INJURY AND/OR PROPERTY DAMAGE.This manual contains instructions for the installation,operation, and maintenance of the gas-fired waterheater. It also contains warnings through out the manu-al that you must read and be aware of. All warnings andall instructions are essential to the proper operation ofthe water heater and your safety. Since we cannot puteverything on the first few pages, READ THE ENTIREMANUAL BEFORE ATTEMPTING TO INSTALL OROPERATE THE WATER HEATER.

2. The installation must conform with the instructions in thismanual; gas company rules; and Local Codes, or in theabsence of Local Codes, with the latest edition of theNational Fuel Gas code, ANSI Z223.1, also referred to asNFPA 54. This publication is available from your localgovernment or public library or gas company or by writ-ing NFPA, Batterymarch Park, Quincy, MA 02269.

Preparing for the New Installation

5

WARNINGThis gas-fired water heater is design certified by CSAINTERNATIONAL under American NationalStandard/CSA Standard for Gas Water Heaters, ANSZ21.10.3 • CSA 4.3 (latest edition). The installation mustconform with this manual, Local Codes and with the lat-est edition of the National Fuel Gas Code, ANSI Z223.1.This publication is available from your local governmentor public library, gas company, or by writing NFPA,Batterymarch Park, Quincy, MA 02269.

WARNINGToxic chemicals such as used for treatment of boilers ornon-potable water heating appliances shall never be intro-duced into a potable water space heating system.

WARNINGThis water heater shall not be connected to any heatingsystems or component(s) previously used with a non-potable water heating appliance.If this water heater is also used for space heating applica-tions, all piping and components connected to the waterheater shall be suitable for use with potable water.

Typical Installation

6

COLD WATER INLET

HOT WATER OUTLET

TEMPEREDWATER OUTLET

EXHAUSTVENT TO

OUTDOORS

GASSUPPLY

TEMPERATURE-PRESSURE RELIEF

VALVE

MIXING VALVE

DISCHARGE PIPE (Do not cap or plug)

PROVIDE A 6″″ AIR GAPBETWEEN THE END OFTHE DISCHARGE PIPE

AND DRAIN

7' POWER CORD(Factory supplied)

INTAKE FORCOMBUSTION

AIR

FLUE PRODUCTSDISCHARGE PIPE

AIR INTAKE PIPE

Vacuum Relief requiredby some codes (refer to local codes)

SHUTOFF VALVE

NOTE: To protect against untimely corrosion of hot and coldwater fittings, it is strongly recommended that di-electricunions or couplings be installed on this water heater whenconnected to copper pipe.

This appliance has been design certified as complying with American National Standard/CSA Standard for water heaters and is con-sidered suitable for:Water (Potable) Heating: All models are “considered suitable for water (potable) heating.”

Water (Potable) Heating and Space Heating: Certain models are “considered suitable for water (potable) heating and space heating.”Refer to the model and rating plate of the water heater.

WARNINGIf this water heater is to be used for multiple location users,such as for apartments, hotels, motel, duplexes, a temperingdevice should be used at each point of use (sink, shower,tub, etc.) to limit the maximum temperature of the hotwater to 125°F. This will help to reduce, but not eliminatethe risk of scald or serious burn injury form exposure to hotwater. Water at a temperature above 125°F, can cause 3rddegree burn injuries which are the most serious burns andrequire skin grafts and results in permanent scarring or evendeath. Some people are more likely to be permanentlyinjured by hot water than others; these include the elderly,children, the infirm, or the physically/mentally handi-capped. Before immersing yourself or anyone else in hotwater, be sure to check the water temperature. WARNING:HOTTER WATER INCREASES THE RISK OF SCALD INJURY.(Also see “Temperature Regulation” section) Mixing valvesare available at plumbing supply or hardware stores. Followmanufacturer’s instructions for installation of these valves.

7

Facts to Consider About theLocationYou should carefully choose an indoor location for the new waterheater, because the placement is a very important consideration forthe safety of the occupants in the building and for the most econom-ical use of the appliance. This water heater is not for use in manu-factured (mobile) homes or outdoor installation.Whether replacing an old water heater or installing the water heaterin a new location, the following critical points must be observed.1. The location selected should be indoors as close as practical to

the vent termination point, and as centralized with the water pip-ing system as possible. The water heater, as all water heaters, willeventually leak. Do not install without adequate drainage provi-sions where water flow will cause damage.

2. If vented through an outside wall or through the roof using 3″ ventpiping, the total vent run (vertical and horizontal) cannot exceeda total of 45 feet with one elbow. If more elbows are required,the venting distance must be reduced 5 feet for every 90° elbow.See page 15 for vent chart.

3. Vent piping cannot slope downward and horizontal runs require1⁄8″ per five foot rise. All horizontal runs require adequate supportat 31⁄2 foot intervals and vertical runs supported at 5 foot intervals.

4. The water heater requires its own (separate) venting system. Itcannot be connected to an existing vent pipe or chimney. It mustterminate to the outdoors. Whenever possible terminate the venton the leeward side of the building through an outside wall. Note:Condensation may be created, at times, as the combustion gasesexit the vent cap and discoloration of surfaces in proximity tothe vent cap may occur.

5. The water heater comes equipped with a 7 foot power cord whichcan be used to connect to a 110/120 volt power source if (1) localcodes allow, and (2) there is a three prong receptacle available.

Locating the New Water Heater 6. The location selection must provide adequate clearances

for servicing and proper operation of the water heater.

Figure 1

WARNINGThis water heater must not be installed directly on carpeting.Carpeting must be protected by a metal or wood panelbeneath the appliance extending beyond the full width anddepth of the appliance by at least 3 inches (76.2mm) in anydirection, or if the appliance is installed in an alcove or clos-et, the entire floor must be covered by the panel. Failure toheed this warning may result in a fire hazard.

WARNINGMinimum clearances between the water heater and combustibleand non-combustible construction are: 0 inches from sides, 0inches from back, 6 inches from front of jacket to closet doorand 12 inches from top of jacket to combustible and non-com-bustible material. Minimum vent clearance: 0 inches. Provide 24inches front clearance for servicing and adequate clearancebetween the jacket top and ceiling for servicing the flue area.

WARNINGPropellants of aerosol sprays and volatile compounds,(cleaners, chlorine based chemicals, refrigerants, etc.) inaddition to being highly flammable in many cases, will alsochange to corrosive hydrochloric acid when exposed to thecombustion products of the water heater. The results canbe hazardous, and also cause product failure.

WARNINGINSTALLATION IN AREAS WHERE FLAMMABLE LIQUIDS(VAPORS) ARE LIKELY TO BE PRESENT OR STORED(GARAGES, STORAGE AND UTILITY AREAS, ETC):Flammable liquids (such as gasoline, solvents, propane (LP)or butane, etc.) or other substances (such as adhesives, etc.),all of which emit flammable vapors, may be improperlystored or used in such areas. The gas water heater ignitoror main burner can ignite such vapors. The resulting flash-back and fire can cause death or serious burns to anyone inthe area, as well as property damage.If installation in such areas is your only option, then theinstallation must be accomplished in a way that the ignitorand main burner flame are elevated from the floor at least18 inches. While this may reduce the chances of flammablevapors from a floor spill being ignited, gasoline and otherflammable substances should never be stored or used in thesame room or area containing a gas water heater or otheropen flame or spark producing appliance.Also, the water heater must be located and/or protected soit is not subject to physical damage by a moving vehicle.NOTE: Flammable vapors may be drawn by air currentsfrom other areas of the structure to the appliance.

CAUTIONWATER HEATERS EVENTUALLY LEAK: Installation of the waterheater must be accomplished in such a manner that if the tank orany connections should leak, the flow of water will not causedamage to the structure. When such locations cannot be avoid-ed, a suitable drain pan should be installed under the waterheater. Drain pans are available at your local hardware store.Such a drain pan must have a minimum length and width of atleast 2 inches greater than the water heater dimensions and mustbe piped to an adequate drain. Drain pan depth must allow foraccess to the outer doors for servicing the ignitor and burner.Under no circumstances is the manufacturer to be held liablefor any water damage in connection with this water heater.

WARNINGDo not use an extension cord. If there is not a suitable recepta-cle with ground and/or local codes prohibit use of a power cord,field wiring must be provided.

WARNINGThe power direct vent water heater requires its own (separate)venting system. It cannot be connected to an existing ventpipe or chimney. It must be terminated to the outdoors. Failureto properly install the venting system can result in asphyxia-tion, a fire or explosion and can cause DEATH, SERIOUS BOD-ILY INJURY, OR PROPERTY DAMAGE.

12″ min. FORCED AIRINLET

12″ min.

36″ min. IF “A” DIMENSIONIS LESS THAN 120″

12″ min.

PD VENTTERMINAL

PD VENTTERMINAL

12″ min.

GRADE

“A”

CORNER INSTALLATIONOF INLET AND OUTLETNOT RECOMMENDED

8

Locating the New Water Heater (cont’d)

Figure 2

Combustion Air and Exhaust

Venting Through an Outside Wall – Clearances•0″ clearance for 3″ PVC, ABS, or CPVC Schedule 40 piping

from combustible surfaces.

•18″ minimum in all directions from any obstruction, such as awall, that may interfere.

•12″ minimum from the ground and corners, 9″ ceiling over-hangs. Figure 2.

•The Power Direct Vent outlet terminal shall terminate at least36″ above any forced air inlet located within 10 feet. Figure 3.

•The Power Direct Vent outlet terminal shall terminate at least12″ below 12″ horizontally from or 12″ above any door, win-dow or gravity air inlet into the building. Figure 3.

•18″ minimum from other natural draft (gravity) direct vent, powervent or power direct vent appliance inlet and/or outlet vent(s) whendirectly above or 135° to either side of center line. Figure 4, page 9.

•24″ minimum from any appliance inlet and/or outlet vents whendirectly below or 45° to either side of center line. Figure 4, page 9.

•The location selection must provide clearances for servicing andproper operation of the water heater. Figure 5.

•Vent termination must not be within 4 feet of any items such asgas meters, gas valves or other gas regulating equipment.

•The venting system must be installed in a manner whichallows inspection of the installation of the venting pipes andjoints as well as periodic inspection after installation asrequired by the National Fuel Gas Code ANSI Z223.1.

Facts to Consider About theLocation (cont’d)

Figure 3

WARNINGFailure to have required clearances between water heaterand combustible material will result in a fire hazard.

WARNINGVent termination must not be within 4 feet of any itemssuch as gas meters, gas valves or other gas regulatingequipment.

WARNINGWhen determining the installation location for a powerdirect vent water heater, snow accumulation and drift-ing should be considered in areas where applicable.

WARNINGIf this water heater will be used in beauty shops, barber shops,cleaning establishments, or self-service laundries with dry clean-ing equipment, it is imperative that the water heater or waterheaters be installed so that combustion and ventilation air betaken from outside these areas. Refer to the “Locating The NewWater Heater” section of this manual and also the latest editionof the National Fuel Gas Code, ANSI Z223.1, also referred to asNFPA 54 for specifics provided concerning air required.

WARNINGDo not install in a confined area such a closet, unless youprovide ventilation air as shown in the “Locating The NewWater Heater” section. Never obstruct the flow of ventila-tion air. If you have any doubts or questions at all, call yourgas company. Failure to provide ventilation air can result in afire or explosion and can cause DEATH, SERIOUS BODILYINJURY, OR PROPERTY DAMAGE.

CLof Flue

9″ min. fromany overhang

12″ min.

12″ min.

Must maintainadequate serviceand maintenanceaccessibility.

Range of degreesavailable for ventpipe installation.

Figure 5

Figure 7

Locating the New Water Heater (cont’d)

9

Figure 6

Air for Ventilation forAppliances Located inConfined SpacesAir for ventilation should be provided if installed in a confinedspace. Refer to the National Fuel Gas Code, ANSI Z223.1.

Figure 4

WIRE FENCEWhen the water heater outlet terminal is low enough to betouched accidentally, or is accessible to small children, awire mesh chain link fence (as shown in Figure 6) may beused. Care should be taken to maintain adequate ventila-tion around the outlet terminal. If a chain link fence isinstalled, it must not be used as a storage area for items thatmay block proper ventilation.

NOT TO BE USED ASA STORAGE AREA

Venting Through Roof – Clearances0″ clearance for 3″ PVC, ABS, or CPVC Schedule 40 pipingfrom combustible surfaces.The Vent Exhaust outlet and air inlet terminals shall terminateat least 18 inches above the roof surface. Figure 7.The venting system must be installed in a manner whichallows inspection of the installation of the venting pipesand joints as well as periodic inspection after installationas required by ANSI Standards.

•••

24″NATURAL DRAFT (GRAVITY)DIRECT VENT, POWERVENT, OR POWER DIRECTVENT APPLIANCE INLETAND/OR OUTLET VENT(S).

VENT OUTLET AIR INTAKE

18″

61⁄2″ MIN.24″ MAX.

18″

45˚

18″

45° VENT CAPW/SCREEN

90° STREET ELL

Installing the New Water Heater

SHUTOFFVALVE COLD INLET

WATER LINE

HOT OUTLETTO HOUSE


VALVE

DISCHARGE PIPE (Do not cap or plug)PROVIDE A 6″″ AIRGAP BETWEEN THE

END OF THEDISCHARGE PIPE

AND DRAIN

EXHAUST VENTTO OUTDOORS


AIR

GASSUPPLY

Water Piping

This water heater shall not be connected to any heatingsystems or component(s) used with a non-potable waterheating appliance.

If a water heater is installed in a closed water supply sys-tem; such as one having a back-flow preventer, checkvalve, water meter with a check valve, etc. in the coldwater supply; means shall be provided to control thermalexpansion. Contact the water supplier or plumbing con-tractor on how to control this situation.

NOTE: To protect against untimely corrosion of hot andcold water fittings, it is strongly recommended that dielec-tric unions or couplings be installed on this water heaterwhen connected to copper pipe.

The illustration shows the attachment of the water piping tothe water heater. The water heater is equipped with 3/4 inchwater connections.

NOTE: If using copper tubing, solder tubing to an adapterbefore attaching the adapter to the cold water inlet con-nection. Do not solder the cold water supply line directlyto the cold water inlet or it will harm the dip tube.

NOTE: This water heater is insulated to minimize heat lossfrom the tank. Further reduction in heat loss can beaccomplished by insulating the hot water lines from thewater heater.

10


AIR INTAKEPIPE

WARNINGHOTTER WATER CAN SCALD: Water heaters are intend-ed to produce hot water. Water heated to a temperaturewhich will satisfy clothes washing, dish washing, andother sanitizing needs can scald and permanently injureyou upon contact. Some people are more likely to bepermanently injured by hot water than others. Theseinclude the elderly, children, the infirm, or physical-ly/mentally handicapped. If anyone using hot water inyour home fits into one of these groups or if there is alocal code or state law requiring a certain temperaturewater at the hot water tap, then you must take specialprecautions. In addition to using the lowest possible tem-perature setting that satisfies your hot water needs, sometype of tempering device, such as a mixing valve, shouldbe used at the hot water taps used by these people or atthe water heater. Mixing valves are available at plumbingsupply or hardware stores. Follow manufacturers instruc-tions for installation of the valves. Before changing thefactory setting on the thermostat, read the “TemperatureRegulation” section in this manual.

Temperature-Pressure Relief Valve

Installing the New Water Heater (cont’d)


VALVE


END OF THEDISCHARGE PIPE

AND DRAIN

11

COLD

TEMPEREDWATEROUTLET

HOT

WARNINGThe temperature-pressure relief valve must be manually oper-ated at least once a year. Caution should be taken to ensurethat (1) no one is in front of or around the outlet of the tem-perature-pressure relief valve discharge line, and (2) the watermanually discharged will not cause any bodily injury or prop-erty damage because the water may be extremely hot.If after manually operating the valve, it fails to completely resetand continues to release water, immediately close the coldwater inlet to the water heater, follow the draining instruc-tions, and replace the temperature-pressure relief valve witha new one.

WARNINGAt the time of manufacture this water heater was providedwith a combination temperature-pressure relief valve certi-fied by a nationally recognized testing laboratory that main-tains periodic inspection of production of listed equipmentor materials, as meeting the requirements for Relief Valvesand Automatic Gas Shutoff Devices for Hot Water SupplySystems, and the latest edition of ANSI Z21.22 and the coderequirements of ASME. If replaced, the valve must meet therequirements of local codes, but not less than a combina-tion temperature and pressure relief valve certified as meet-ing the requirements for Relief Valves and Automatic GasShutoff Devices for Hot Water Supply Systems, ANSIZ21.22 by a nationally recognized testing laboratory thatmaintains periodic inspection of production of listed equip-ment or materials.The valve must be marked with a maximum set pressure notto exceed the marked hydrostatic working pressure of thewater heater (150 lbs. p.s.i.) and a discharge capacity notless than the water heater input rate as shown on the modelrating plate. (Electric heaters - watts divided by 1000 x3412) equal BTU/Hr. rate.Your local jurisdictional authority, while mandating the useof a temperature-pressure relief valve complying with ANSIZ21.22 and ASME, may require a valve model different fromthe one furnished with the water heater.Compliance with such local requirements must be satisfiedby the installer or end user of the water heater with a local-ly prescribed temperature-pressure relief valve installed inthe designated opening in the water heater in place of thefactory furnished valve.For safe operation of the water heater, the relief valve mustnot be removed from it’s designated opening or plugged.The temperature-pressure relief valve must be installeddirectly into the fitting of the water heater designated forthe relief valve. Position the valve downward and providetubing so that any discharge will exit only within 6 inchesabove, or at any distance below the structural floor. Be cer-tain that no contact is made with any live electrical part.The discharge opening must not be blocked or reduced insize under any circumstances. Excessive length, over 30feet, or use of more than four elbows can cause restrictionand reduce the discharge capacity of the valve.No valve or other obstruction is to be placed between therelief valve and the tank. Do not connect tubing directly todischarge drain unless a 6″″ air gap is provided. To preventbodily injury, hazard to life, or property damage, the reliefvalve must be allowed to discharge water in quantitiesshould circumstances demand. If the discharge pipe is notconnected to a drain or other suitable means, the waterflow may cause property damage. The discharge pipe:—Must not be smaller in size than the outlet pipe size of

the valve, or have any reducing couplings or other restric-tion.

—Must not be plugged or blocked.—Must be of material listed for hot water distribution.—Must be installed so as to allow complete drainage of both

the temperature-pressure relief valve, and the discharge pipe.—Must terminate at an adequate drain.—Must not have any valve between the relief valve and tank.

RELIEF VALVE OPENING“THIS WATER HEATER IS PROVIDED WITH A COMBINATION TEMPER-ATURE-PRESSURE RELIEF VALVE. FOR SAFE OPERATION OF THEWATER HEATER, THE RELIEF VALVE(S) MUST NOT BE REMOVEDFROM ITS DESIGNATED POINT OF INSTALLATION OR PLUGGED.”YOUR LOCAL JURISDICTIONAL AUTHORITY, WHILE MANDATING THEUSE OF A TEMPERATURE-PRESSURE RELIEF VALVE COMPLYINGWITH ANSI Z21.22 AND ASME, MAY REQUIRE A VALVE MODEL DIF-FERENT FROM THE ONE FURNISHED WITH THE WATER HEATER.COMPLIANCE WITH SUCH LOCAL REQUIREMENTS MUST BE SATIS-FIED BY THE INSTALLER OR END USER OF THE WATER HEATERWITH A LOCALLY PRESCRIBED TEMPERATURE-PRESSURE RELIEFVALVE INSTALLED IN THE DESIGNATED OPENING IN THE WATERHEATER.SEE MANUAL HEADING—“TEMPERATURE-PRESSURE RELIEFVALVES” FOR INSTALLATION AND MAINTENANCE OF RELIEF VALVE,DISCHARGE LINE AND OTHER SAFETY PRECAUTIONS.


12

Filling the Water Heater

To fill the water heater with water:1. Close the water heater drain valve by turning the handle

to the right (clockwise). The drain valve is on the lowerfront of the water heater.

2. Open the cold water supply valve to the water heater.NOTE: The cold water supply valve must be left openwhen the water heater is in use.

3. To insure complete filling of the tank, allow air to exitby opening the nearest hot water faucet. Allow water torun until a constant flow is obtained. This will let air outof the water heater and the piping.

4. Check all new water piping for leaks. Repair as needed.

WiringThe water heater comes equipped with a 7 foot power cordwhich can be used to connect to a 110/120 volt powersource if, (1) local codes allow, and (2) there is a threeprong receptacle available. This unit must have a groundedoutlet to operate.

You must provide all wiring, (1) to a receptacle or, (2)between the water heater and junction box when thepower cord is not used.

OPTIONAL Field Installed Wiring

1. Provide a way to easily shut off the electric power whenworking on the water heater. This could be with a cir-cuit breaker or fuse block in the entrance box or a sepa-rate disconnect switch.

2. Install and connect a circuit directly from the main fuseor circuit breaker box. This circuit must be the right sizeand have its own fuse or circuit breaker.

WIRE NUTS

GREENGROUND SCREW

CONDUIT

You must provide all wiring of the proper size outside ofthe water heater. You must obey local codes and electriccompany requirements when you install this wiring.

If you are not familiar with electric codes and practices, orif you have any doubt in your ability to connect the wiringto this water heater, obtain the service of a competent elec-trician. Contact a local electrical contractor and/or the localelectric utility.

7’ MAXIMUMCORD LENGTH

(Factory Supplied)

3. A standard 1⁄2″ conduit opening has been made in thewater heater junction box for the conduit connection.

4. Use wire nuts and connect the power supply wiring tothe wires inside the water heater’s junction box.

CAUTIONIf wiring from the fuse box or circuit breaker box was aluminumfor the old water heater, replace it with copper wire. If you wishto reuse the existing aluminum wire, have the connection at thewater heater made by a competent electrician. Contact a localelectrical contractor and/or the local electric utility.

WARNINGWATER HEATERS EQUIPPED FOR ONE TYPE VOLTAGEONLY: This water heater is equipped for 110/120 volts only.DO NOT USE THIS WATER HEATER WITH ANY VOLTAGEOTHER THAN THE ONE SHOWN ABOVE. Failure to use thecorrect voltage can cause problems which can result in DEATH,SERIOUS BODILY INJURY OR PROPERTY DAMAGE. If youhave nay questions or doubts consult your electric company.

WARNINGThis appliance must be grounded for safety and to insureproper operation. Failure to do so could result in DEATH,SERIOUS BODILY INJURY OR PROPERTY DAMAGE.

WARNINGDo not use an extension cord. If there is not a suitablereceptacle and/or local codes prohibit use of a power cord,field wiring must be provided.

CAUTIONNever use this water heater unless it is completely filledwith water. To prevent damage to the tank, the tank mustbe filled with water. Water must flow from the hot waterfaucet before turning “ON” gas to the water heater.


13

absence of local codes, with the National ElectricalCode, ANSI/NFPA 70 (latest edition).

6. Replace the wiring junction cover using the screwsprovided.

Venting

All vent gases must be completely vented to the outdoors ofthe structure (dwelling).

Wiring Diagram

ON/OFF SWITCH

NEU

TRA

L

HO

THI LIMIT SWITCH

PRESSURE SWITCH

WHCN

MAIN VALVE

BLOWER

L1

5

6

7

IGN

ITO

R

HILIMIT BLOWER

CONTROL

YEL

LOW

BLU

E

WH

ITE

BLA

CK

BR

OW

N

RED

BLU

E

BLU

E

BLA

CK

YELL

OW

NI2L1l1

13567

HOTON/OFF

BLACK

NEUTRAL WHITE

GROUND GREEN

WHITE

SENSOR

IGNITOR

NO

PSNC

C

RED

5. The water heater must be electrically “grounded” bythe installer. The unit will not operate unless it is prop-erly grounded. For complete grounding details and allallowable exceptions, refer to local codes or in the

WARNINGObstructed or deteriorated vent systems may present seri-ous health risk or asphyxiation.

WARNINGThe vent outlet must connect to the water heater exhaust out-let. The vent inlet piping must connect to the water heater airinlet. Both the water heater connections are clearly marked.Failure to read this instruction can result in DEATH, SERIOUSBODILY INJURY, OR PROPERTY DAMAGE.

WARNINGTo insure proper venting of this gas-fired water heater, thecorrect vent pipe diameter must be utilized. Any additions ofother gas appliances on vent with this water heater willadversely affect the operation of the water heater.

WARNINGThe vent pipe from the water heater must be 3″″ diametervent pipe and must slope upward 1⁄8 inch per five linear feet.

CAUTIONLabel all wires prior to disconnection when servicingcontrols. Wiring errors can cause improper and danger-ous operation. Verify proper operation after servicing.

WARNINGFailure to have required clearances between water heaterand combustible material will result in a fire hazard.

MIN. RISE 1⁄8″PER FIVE FEET

31⁄2'

STRAPPING


14

Horizontal runs must be securely supported at 31⁄2 footintervals and vertical runs supported at 5 foot intervals.

Venting (cont’d)

WARNINGBe sure vent pipe is properly connected to preventescape of dangerous flue gases which could cause dead-ly asphyxiation.

WARNINGChemical vapor corrosion of the flue and vent systemmay occur if air for combustion contains certain chem-ical vapors. Spray can propellants, cleaning solvents,refrigerator and air conditioner refrigerants, swimmingpool chemicals, calcium and sodium chloride, waxes,bleach and process chemicals are typical compoundswhich are potentially corrosive.

VENTING THROUGH AN OUTSIDE WALL

In the carton is supplied:

1. Two 3″ inlet and outlet PVC Schedule 40 - 45° vent caps.

2. A 3″ ABS Schedule 40 - 90 street ell; used to connect the out-let vent pipe to the water heater when the outlet vent pipe isto be turned horizontally directly off the blower.

3. A 5‘ section of 3″ ABS Schedule 40 outlet vent pipe (more maybe required and must be supplied locally).

1. The water heater requires its own (separate) ventingsystem.

2. Only 3″ ABS Schedule 40 piping and fittings are acceptablematerials on the first five feet of the outlet vent system.

3. 3″ PCV, ABS, or CPVC Schedule 40 piping and fittings areacceptable materials for the inlet vent system and for the out-let vent system after the first five feet.

4. It cannot be connected to existing vent piping orchimney.

5. When venting through an outside wall, the vents must termi-nate horizontally to the outdoors.

3″ PVC SCHEDULE40 90° STREETINLET ELBOWREQUIRED

5' SCHEDULE 40 ABS OUTLETPIPE SUPPLIED

SCHEDULE 40 PVC INLET PIPE

REQUIRED ONE 3″ SCHEDULE40 PVC 45° OUTLETELBOW SUPPLIED

ONE 3″ SCHEDULE40 PVC 45° INLETELBOW SUPPLIED

3″ ABS SCHEDULE 4090° STREETOUTLET ELBOWSUPPLIED

15

Installing the New Water Heater (cont'd)

VENTING SYSTEM EXAMPLE INSTALLATIONS FORALL MODELS

The vent piping cannot under any circumstances be rundownhill.

The vent piping can be installed as follows:

1.Horizontal runs require a minimum 1/8″ rise per five feet.

3 ELBOWEXAMPLE



3 ELBOWEXAMPLE

*NOTE: Two 45˚ elbows are equivalent to one 90° elbow.One 90˚ elbow equals 5 feet of equivalent vent length.


131⁄4″ MIN. 111⁄4″ MIN.

45′ MAX.18″ MIN.

ONE ELBOW




CAULKJOINT

3 ELBOWEXAMPLE

2. The total vertical and horizontal vent runs cannot exceedthe maximum length with the number of 90˚ elbows asspecified in the table below. If more elbows are required,the venting distance must be reduced 5 feet for every 90°elbow:

3″ DIA. VENTS NUMBER OF 90˚ DEG. MAX. LENGTH (FT.) ELBOWS*

45 140 235 3

1 ELBOWEXAMPLE

1 ELBOWEXAMPLE

7″

38′

3.Minimum vent length for all models is 18 inches.

MOVEMENT COMPLETE OF JOINT SET

90°F to 150°F 3⁄4 hr. 8 hrs.50°F to 90°F 1 hr. 15 hrs.0°F to 50°F 11⁄3 hr. 18 hrs.

16

Cementing PVC, ABS OR CPVC Pipe and Fittings

Read and observe all safety information printed on primer,cleaner, and cement containers.

All primers, cleaners, and cements must meet all localcodes and applicable standards of the American SocietyFor Testing Materials Standards.

Before using primers, cleaners, and cements, stir or shake,making sure contents are liquid. Do not use if found to belumpy or jelly-like.1. Cut pipe ends squarely removing all burrs and dirt.2. Dry fit pipe and fittings to be connected for proper fit.3. Clean pipe and fitting with a primer/cleaner.4. Apply a thin coat of cement to fitting, avoiding puddling

inside.5. Apply a liberal coat of cement to pipe leaving no voids.6. QUICKLY assemble parts while cement is fluid! If you

wait too long, re-coat pipes.7. Push pipe completely into socket of fitting, turning as it

goes until it bottoms.8. Hold pipe and fitting together for 30 seconds. Then care-

fully clean off excess with a cloth. Allow connections asufficient time to cure before disturbing.

9. Remember that vent pipes must be adequately andsecurely supported.

APPROXIMATE SETTING TIME FOR 21⁄2″ TO 4″ PIPEJOINTS


NOTE: Inlet and outlet vent pipes from multiple powerdirect vent water heaters must be separated from adjacentheater vent pipes by a minimum of 61/2″″.

CUTTING OPENINGS THROUGH AN OUTSIDE WALLAND COLLAR INSTALLATION

After reading the manual and you have determined thelocation of the opening in the wall, (using the drawingbelow), cut one 31⁄2″ diameter hole for the inlet vent pip-ing and one 31⁄2″ diameter hole for the outlet vent pipingthrough an exterior wall.

NOTE: When determining location of the openings in theoutside wall allow for the 1⁄8″ rise per five feet that hastaken place in the horizontal run.

VENT PIPE SEPARATION

The inlet and outlet vent pipes must be separated by a min-imum distance of 61/2″ inches up to 24 inches maximum.

61/2″ MIN.24″ MAX.

The 3″ PVC, ABS or CPVC Schedule 40 vent pipe can berun from the water heater through the wall or from the wallto the water heater, whichever is most convenient. The ventpipe must extend a minimum of 11⁄2″ through the exteriorwall. Extending the vent cap as far as possible from the sur-face of the exterior wall will help minimize discoloration ofthe wall. Note that the inside flue mounting adaptors mustbe slipped over the vent piping before locating the pipethrough the wall. Before securing the inside and outsidecollars to the wall, use a silicone sealer between pipe andopening to insure a water and air tight seal.


CL OF FLUE

111⁄2″ MIN.

75 GAL.– 63″

PRECAUTIONSAlways store primers, cleaner, and cements in cool, dry,well ventilated places. Do not store them near heat,sparks, or flames. Keep containers closed. Use them inwell ventilated areas. Wear impervious clothing whilehandling. Do not smoke, eat, or drink while handling.Wash thoroughly after handling and before eating. Weareye protection when handling. If swallowed, drink water,do not induce vomiting, and call a physician or poisoncontrol center immediately. If inhaled, get fresh air andseek medical attention if ill feelings persist. In case of eyeand skin contact, immediately flush with plenty of waterfor 15 minutes and seek medical attention if irritationpersists. KEEP OUT OF REACH OF CHILDREN.

DANGERPrimer, cleaner, and cements are extremely flammable.They are harmful or fatal if swallowed. The vapors areharmful. They may irritate eyes and skin and can beabsorbed through the skin.

17


Venting (cont'd)

INSTALLATION SHOWING USE OF PVC, ABS ORCPVC PIPE FOR INLET AND OUTLET VENT PIPING:

Inlet piping through any type wall.

EXTERIOR WALLSILICONESEALER

SILICONE SEALER

SCREW

SCREW

SCREW

SCREW SCREEN ATOUTLET

FLUE MOUNTINGADAPTOR

VENT CAP MUSTBE POSITIONEDDOWNWARD

11⁄2" MIN. EXTENSIONTHROUGH

EXTERIOR WALL

FLUE MOUNTING ADAPTOR

CONNECTING VENT TO BLOWER

1. If making an immediate horizontal run of vent off theblower, one 3″ PVC inlet and one 3″ ABS outletSchedule 40 street elbows are required. Place the elbowin the required direction on the blower and using 3 sheetmetal screws, attach the elbow.

2. If there is to be a vertical run of vent from the blower, the3″ PVC inlet and the 3″ ABS outlet pipes must beattached to the blower and venting hood, using 6 sheetmetal screws.

CAULKJOINTS

CAULKJOINTS

VENT TOOUTDOORS

INTAKE FORCOMBUSTION AIR


AIR INTAKEPIPE

INSTALLATION SHOWING USE OF (OPTIONAL)DELUXE HORIZONTAL VENT KIT:

Typical installation.

If this concentric flue, through the wall type of ventingsystem is preferred, the vent kit can be ordered from theService Parts Dept. under kit #9002749. See also pages 36and 37. Installation instructions are provided with the kit.

VENTING THROUGH A ROOF

Two 3″ inlet and outlet PVC Schedule 40 45° vent caps aresupplied.

A 5’ section of 3″ ABS Schedule 40 outlet vent pipe is sup-plied. More may be required and must be supplied locally.

1. The water heater requires its own (separate) ventingsystem.


A gas line of sufficient size must be run to the water heater.Consult the latest edition of National Fuel Gas Code ANSIZ223.1, also referred to as NFPA 54 and the gas companyconcerning pipe size.There must be:—A readily accessible manual shut off valve in the gas sup-

ply line serving the water heater, and—A drip leg (sediment trap) ahead of the gas control valve

to help prevent dirt and foreign materials from enteringthe gas control valve.

—A flexible gas connector or a ground joint union betweenthe shutoff valve and control valve to permit servicing ofthe unit.

Be sure to check all the gas piping for leaks before lightingthe water heater. Use a soapy water solution, not a matchor open flame. Rinse off soapy solution and wipe dry.When installed at elevations above 2,000 feet, input rat-ings should be reduced at the rate of 4 percent for each1,000 feet above sea level.

Gas Piping

WARNINGThe appliance and its individual shutoff valve must bedisconnected from the gas supply piping system duringany pressure testing of that system at test pressures inexcess of 1/2 pound per square inch (3.5kPa).The appliance must be isolated from the gas supply pip-ing system by closing its individual manual shutoff valveduring any pressure testing of the gas supply piping sys-tem at test pressures equal to or less than 1/2 pound persquare inch (3.5kPa).

WARNINGMake sure the gas supplied is the same type listed on themodel rating plate. The inlet gas pressure must notexceed 10.5 in. water column (2.6kPa)for natural gas or13 in. water column (3.2 kPa) for propane (L.P.) gas. Theminimum inlet gas pressure listed on the rating plate isfor the purpose of input adjustment.

WARNINGIf the gas control valve is subjected to pressure exceed-ing 1/2 pound per square inch (3.5kPa), the damage tothe gas control valve could result in a fire or explosionfrom leaking gas.

WARNINGIf the main gas line shutoff serving all gas appliances is used,also turn “OFF” the gas at each appliance. Leave all gasappliances turned “OFF” until the water heater installationis complete.

VENTING THROUGH A ROOF (CONT’D)

2. Only 3″ ABS Schedule 40 piping and fittings are acceptablematerials on the first five feet of the outlet vent system.

3. 3″ PVC, ABS, or CPVC Schedule 40 piping and fittings areacceptable materials for the inlet vent system and for the out-let vent system after the first five feet.

4. It cannot be connected to existing vent piping or chimney.

5. It must terminate vertically to the outdoors.

6. The total vertical and horizontal vent runs cannot exceed themaximum length with a maximum number of 90˚ elbows asspecified in the table below. If more elbows are required, theventing distance must be reduced 5 feet for every 90° elbow.

18

3″ DIA. VENTS NUMBER OF 90˚ DEG. MAX. LENGTH (FT.) ELBOWS*

45 140 235 3

*NOTE: Two 45˚ elbows are equivalent to one 90˚ elbow.One 90˚ elbow equals 5 feet of equivalent vent length.

TOTAL VERTICAL ANDHORIZONTAL RUNS - SEECHART ABOVE (ITEM 6).

19

Connecting the gas piping to the gas control valve of thewater heater can be accomplished by either of the twomethods shown.

SEDIMENT TRAP

A sediment trap shall be installed as close to the inlet of thewater heater as practical at the time or water heater instal-lation. The sediment trap shall be either a tee fitting with acapped nipple in the bottom outlet or other device recog-nized as an effective sediment trap. If a tee fitting is used, itshall be installed in conformance with one of the methodsof installation shown.


GAS PIPING WITH FLEXIBLE CONNECTOR

GAS PIPING WITH ALL BLACK IRON PIPE TOGAS CONTROL

GROUND JOINTUNION (OPTIONAL)

MANUALSHUTOFF

VALVE

GAS CONTROL

VALVE

GAS SUPPLY PIPING

FLEXIBLE GAS CONNECTORLABELED AS COMPLYINGWITH ANSI STANDARDS

LOOP

DRIP LEG (SEDIMENT TRAP)

CAP

GAS SUPPLY PIPING

MANUALSHUTOFF

VALVE

GAS CONTROL

VALVE

BLACK PIPE

DRIP LEG (SEDIMENTTRAP)

CAP

3″ MIN.

3″ MIN.

GROUND JOINTUNION (OPTIONAL)

WARNINGContaminants in the gas lines may cause improper oper-ation of the gas control valve that may result in fire orexplosion. Before attaching the gas line be sure that allgas pipe is clean on the inside. To trap any dirt or foreignmaterial in the gas supply line, a drip leg (sometimescalled a sediment trap) must be incorporated in the pip-ing. The drip leg must be readily accessible. Install inaccordance with the “Gas Piping” section. Refer to thelatest edition of the National Fuel Gas Code, ANSIZ223.1, also referred to as NFPA 54.

WARNINGUse pipe joint compound or teflon tape marked as being resis-tant to the action of petroleum [Propane (L.P.)] gases.

WARNINGThe appliance and its gas connection must be leak testedbefore placing the appliance in operation.

20

Installation ChecklistBEFORE OPERATING THE WATER HEATER:

1. Check the gas line for leaks.a. Use a soapy water solution. DO NOT test for gas leaks

using a match or open flame.b. Brush the soapy water solution on all gas pipes, joints

and fittings.c. Check for bubbling soap. This means you have a leak.

Turn “OFF” gas and make the necessary repairs.d. Recheck for leaks.e. Rinse off soapy solution and wipe dry.

2. Is the new temperature-pressure relief valve properlyinstalled and piped to an adequate drain? See “Temperature-Pressure Relief Valve” section.

3. Are the cold and hot water lines connected to the waterheater correctly? See “Water Piping” instructions in the“Installing the New Water Heater” section.


4. Is the water heater completely filled with water? See “Fillingthe Water Heater” instructions in the “Installing the NewWater Heater” section.

5. Will a water leak damage anything? See the “Locating theNew Water Heater” section.

6. Is there proper clearance between the water heater and any-thing that might catch fire? See the “Locating the New WaterHeater” section.

7. Do you have adequate ventilation so that the water heaterwill operate properly? See “Air for Ventilation” in the“Locating the New Water Heater” section.

8. Is the vent piping properly secured? See “Venting” instruc-tions in the “Installing the New Water Heater” section.

9. Is there proper clearance between the vent pipe and any-thing that might catch fire? See “Venting” instructions in the“Installing the New Water Heater” section.

10. Is the vent pipe properly sloped and does the vent terminateoutdoors? See “Venting” instructions in the “Installing theNew Water Heater” section.

11. Do you need to call your gas company to check the gas pipeand its hookup?

COLD WATER INLET

HOTWATER

OUTLET

TEMPEREDWATER

OUTLET

SHUTOFFVALVE

TEE

DRIP LEG(Sediment trap)

PIPE CAP

EXHAUSTVENT TO

OUTDOORS

GASSUPPLY


VALVE


END OF THE DISCHARGE PIPE

AND DRAIN


AIR


AIR INTAKE PIPE

Vacuum Reliefrequired bysome codes (refer to localcodes)

SHUTOFF VALVE

MODEL RATING PLATE

SUITABLE FOR WATER (POTABLE)HEATING AND SPACE HEATING

DIRECT VENT AUTOMATIC STORAGEWATER HEATERDIRECT VENT AUTOMATIC CIRCULATINGTANK WATER HEATERELECTRICAL RATING: VOLTS 115/HZ60/AMPS 2

21

Operating

This water heater is equipped with an electrically operatedventing system and electronic control. For the burner tocome on, the water heater thermostat must call for heat.Then the system will begin sequencing, each section prov-ing itself before gas is allowed to flow to the burner.

BEFORE THE WATER HEATER WILL OPERATE:

1. The control system must be connected to a grounded110/120 volt power supply. The control system has anoverall rating of 2 amps. The water heater must besecurely and adequately grounded in accordance withlocal codes and with the latest edition of the NationalElectrical Code ANSI/NFPA 70.

2. The ON/OFF toggle switch, located on the control boxabove the thermostat must be in the “ON” position forthe electrical control system to operate allowing the gasportion to operate (ignite burner).

3. The gas control knob located on the thermostat must beturned to the “ON” position for the gas to be able toflow.

4. The venting manual reset switch must be in the closedposition. See “Venting Manual Reset Switch” in the “ForYour Information” section.

5. There is a non-resettable hi-limit switch in the thermo-stat, which must be good (closed) for the thermostat tobe operated. See “High Temperature Shut Off System”in the “For Your Information” section.

OPERATION

When the thermostat calls for heat, gas is allowed to flowto a (N/O) pressure switch closing it. An electrical circuit isthen made to the blower, turning it on. When the blowerhas achieved sufficient venting, the air pressure switch willclose. A 120 volt circuit will be completed through theventing manual reset switch and on to the 120 volt gasvalve. The 120 volt gas valve will open allowing gas toflow to the burner. The hot surface ignitor will establish amain burner flame.

BLOWER MOTOR

AIR PRESSURESWITCH

VENTING HOOD

ON/OFF SWITCH

VENTING MANUALRESET SWITCH

BURNER

120V GAS VALVE

GAS THERMOSTAT

GAS CONTROLKNOB

DIAGNOSTIC INDICATOR

HOT SURFACEIGNITOR

22

Operating instructions are located on front of the waterheater, above or to one side of the gas control valve.

CHECK FOR LEAKS

Be sure to check all your gas pipes for leaks before lightingyour water heater. Use a soapy water solution, not a matchor open flame. Check the factory gas fittings when the mainburner is turned “ON”. Use a soapy water solution for this, too.

Operating (cont’d)

INNER DOOR

OUTER DOOR

Figure 8

Figure 9

Figure 10

WARNINGBEFORE LIGHTING [PROPANE (L.P.) GAS WATERHEATERS]: Propane (L.P.) gas is heavier than air. Shouldthere be a leak in the system, the gas will settle near theground. Basements or crawl spaces, closets and areasbelow ground level will serve as pockets for the accu-mulation of this gas. Before attempting to operate theheater or turning a nearby electrical light switch, beabsolutely sure there is no accumulated gas in the area.Search for odor of gas by sniffing at ground level in thevicinity of the appliance. If odor is detected, follow thesteps indicated at “For Your Safety” on the cover pageof this manual, then leave the premises.

WARNINGDO NOT force the gas control knob. Use only yourhand to turn it to “ON” or “OFF”. Never use a tool suchas a lever, wrench or pliers. Do not hit or damage theknob. A damaged knob may result in an explosion andserious injury. If you have problem turning the knob,call the gas supplier immediately.

WARNINGAN ODORANT IS ADDED TO THE GAS USED BY

THIS WATER HEATER.FOR YOUR SAFETYIF YOU SMELL GAS:1. Do not try to light any appliance.2. Do not touch any electrical switch; do not use an

phone in your building.3. Immediately call you gas supplier from a neighbor’s

phone. Follow the gas supplier’s instructions.4. If you cannot reach your gas supplier, call the fire

department.

23

Operating (cont’d)

FOR YOUR SAFETY READ BEFORE OPERATINGWARNING

If you do not follow these instructions exactly, a fire or explosion mayresult causing property damage, personal injury or loss of life.

A. This appliance does not have a pilot. It is equipped withan ignition device which automatically lights the burner.Do not try to light the burner by hand.

B. BEFORE OPERATING smell all around the appliancearea for gas. Be sure to smell next to the floor becausesome gas is heavier than air and will settle on the floor.WHAT TO DO IF YOU SMELL GAS• Do not try to light any appliance.• Do not touch any electric switch; do not use any phone

in your building.• Immediately call your gas supplier from a neighbor’s

phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the firedepartment.

C. Use only your hand to push in or turn the gas controlknob. Never use tools. If the knob will not push in orturn by hand, don’t try to repair it, call a qualified ser-vice technician. Force or attempted repair may result ina fire or explosion.

D. Do not use this appliance if any part has been underwater. Immediately call a qualified service technician toinspect the appliance and to replace any part of thecontrol system and any gas control which has beenunder water.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above on thislabel.

2. Set ON/OFF switch lever on control box to “OFF”.3. Set the thermostat to lowest setting by turning

the water temperature dial counter-clockwise,( ) to its lowest temperature setting. DO NOTFORCE. Turn gas control knob clockwise to “OFF”position. (Figure 6)

4. Wait five (5) minutes to clear out any gas. If you thensmell gas, STOP! Follow “B” in the safety informa-tion above on this label. If you don’t smell gas, go tothe next step.

5. Replace (or close) inner door. Replace outer doors.WARNING: Check outer doors. Outer doorsmust be installed before turning gas controlknob to “ON” position.

6. At arms length away, turn gas control knob counter-clockwise to the full “ON” position. (Figure 7)

WARNING Do not use gas control knob to regu-late gas flow.

7. At arms length away, set the thermostat to desired set-ting. The mark (�) HOT indicative of approximate 120°Fis preferred starting point. Some local laws may requirea lower starting point. If hotter water is desired, seeinstruction manual and “warning” below.

8. Set ON/OFF switch lever on control box to “ON”.

WARNINGHotter water increases the risk of scald injury. Before changing temperature setting see instruction manual.For operation at outlet water temperature not in excess of 180°F.

TO TURN OFF GAS TO APPLIANCE1. Set ON/OFF switch lever on control box to “OFF”.2. Set the thermostat to lowest setting by turning the

water temperature dial counter-clockwise ( ) toits lowest temperature setting. DO NOT FORCE.

3. Turn gas control knob clockwise ( ) to “OFF”position.

WARNINGThis water heater is equipped for one type gas only. Check the rating plate near the gas control valve for thecorrect gas. Do not use this water heater with any gas other than the one listed on the rating plate. Failure touse the correct gas can cause problems which can result in death, serious bodily injury or property damage.If you have any questions or doubts consult your gas supplier or gas utility.Insulation blanket or other insulation wrapping, applied external to the jacket, may result in unsafe operationof the water heater. For additional information, see instruction manual.

TOP VIEW OFGAS CONTROL

24

Due to the nature of the typical gas water heater, the watertemperature in certain situations may vary up to 30°F high-er or lower at the point of use such as, bathtubs, showers,sink, etc.

This means that when the temperature adjustment dial isset at the mark approximating 120°F, the actual water tem-perature at any hot water tap could be as high as 150°F oras low as 90°F.

Any water heater’s intended purpose is to heat water. Hotwater is needed for cleaning, (bodies, dishes, clothing). Hotwater will present a scald hazard. Depending on the timeelement, and the people involved (normal adults, children,toddlers, elderly, infirm, etc.) scalding may occur at differ-ent temperatures.

The thermostat of this water heater has been factory set at itslowest position, to reduce the risk of scald injury. It isadjustable and must be reset to the desired temperature set-ting. The mark (�) HOT which is indicative of approxi-mately 120°F is the preferred starting point. Some stateshave a requirement for a lower setting. If you need hotterwater, follow directions for temperature adjustment, butbeware of the warnings in this section.

��

�

��

�

�

��

�

�

��

�

�

�HOT– Is a thermostat setting of approximate 120°Fwhich will supply hot water at the most eco-nomical temperatures. The temperatureadjustment knob can be turned lower than“HOT” if desired.

A– Is a thermostat setting of approximately 140°F.

B– Is a thermostat setting of approximately 150°F.

C– Is a thermostat setting of approximately 160°F.

D–Is a thermostat setting of approximately 170°F.

VERY HOT– Is a thermostat setting of approximately 180°F.It is recommended that the dial be set lowerwhenever possible.

NOTE: Water temperature range of 120°–140°F recom-mended by most dishwasher manufacturers.

Turn the water temperature dial clockwise ( ) toincrease the temperature, or counterclockwise ( ) todecrease the temperature.

Temperature Regulation

WARNINGHOTTER WATER CAN SCALD: Water heaters are intend-ed to produce hot water. Water heated to a temperaturewhich will satisfy clothes washing, dish washing, andother sanitizing needs can scald and permanently injureyou upon contact. Some people are more likely to bepermanently injured by hot water than others. Theseinclude the elderly, children, the infirm, or physical-ly/mentally handicapped. If anyone using hot water inyour home fits into one of these groups or if there is alocal code or state law requiring a certain temperaturewater at the hot water tap, then you must take specialprecautions. In addition to using the lowest possible tem-perature setting that satisfies your hot water needs, sometype of tempering device, such as a mixing valve, shouldbe used at the hot water taps used by these people or atthe water heater. Mixing valves are available at plumbingsupply or hardware stores. A qualified plumber shouldbe consulted. Follow manufacturers instructions forinstallation of the valves. Before changing the factory set-ting on the thermostat, read the “TemperatureRegulation” section in this manual.

WARNINGNever allow small children to use a hot water tap, or todraw their own bath water. Never leave a child or hand-icapped person unattended in a bathtub or shower.

WARNINGShould overheating occur or the gas supply fail to shut off,turn “OFF” the manual gas control valve to the appliance.

25

Start Up ConditionsCONDENSATIONWhenever the water heater is filled with cold water, a cer-tain amount of condensation will form while the burner ison. A water heater may appear to be leaking when in factthe water is condensing. This usually happens when:

a. When a new water heater is filled with cold water forthe first time.

b. When gas burns and water vapor is produced in waterheaters, particularly high efficiency models where fluetemperatures are lower.

c. When you use large amounts of hot water in a shorttime and the refill water is very cold.

Moisture from the products of combustion condenses onthe cooler tank surfaces and form drops of water which mayfall onto the burner or other hot surfaces and produce a“sizzling” or “frying” noise.

Because of the suddenness and amount of water, conden-sation water may be diagnosed as a “tank leak”. After thewater in the tank warms up (about 1-2 hours), the condi-tion should disappear.

Do not assume the water heater is leaking until there hasbeen enough time for the water in the tank to warm up.

An undersized water heater will cause more condensation.The water heater must be sized properly to meet the fami-ly’s demands for hot water including dishwashers, washingmachines and shower heads.

Excessive condensation may be noticed during the winterand early spring months when incoming water tempera-tures are at their lowest.

Good venting is essential for a gas fired water heater tooperate properly as well as to carry away products of com-bustion and water vapor.

SMOKE/ODORIt is not uncommon to experience a small amount of smokeand odor during the initial start-up. This is due to burningoff of oil from metal parts, and will disappear in a shortwhile.

THERMAL EXPANSIONBecause of such events as high line pressure, frequent cut-offs, the effects of water hammer among others, water sup-ply systems may have installed devices such as pressurereducing valves, check valves, back flow preventers, etc...tocontrol these types of problems. When these devices arenot equipped with an internal by-pass, and no other mea-sures are taken, the devices cause the water system to beclosed. As water is heated, it expands (thermal expansion)and closed systems do not allow for the expansion of heat-ed water.The water within the water heater tank expands as it is heat-ed and increases the pressure of the water system. If therelieving point of the water heater’s temperature-pressurerelief valve is reached, the valve will relieve the excess pres-sure. The temperature-pressure relief valve is not intendedfor the constant relief of thermal expansion. This is anunacceptable condition and must be corrected.

It is recommended that any devices installed which couldcreate a closed system have a by-pass and/or the systemhave an expansion tank to relieve the pressure built by ther-mal expansion in the water system. Expansion tanks areavailable for ordering through local plumbing supply hous-es. Contact the local water supplier and/or plumbing con-tractor for assistance in controlling these situations.

STRANGE SOUNDSPossible noises due to expansion and contraction of somemetal parts during periods of heat-up and cool-down do notrepresent harmful or dangerous conditions.Condensation causes sizzling and popping with the burnerarea during heating and cooling periods and should be con-sidered normal. See “Condensation” in this section.

Operational ConditionsSMELLY WATERIn each water heater there is installed at least one anoderod (see parts section) for corrosion protection of the tank.Certain water conditions will cause a reaction between thisrod and the water. The most common complaint associatedwith the anode rod is one of a “rotten egg smell”. This odoris derived from hydrogen sulfide gas dissolved in the water.The smell is the result of four factors which must all be pre-sent for the odor to develop:

a. a concentration of sulfate in the supply water.b. little or no dissolved oxygen in the water.c. a sulfate reducing bacteria within the water heater.

(This harmless bacteria is non-toxic to humans.)d. an excess of active hydrogen in the tank. This is caused

by the corrosion protective action of the anode.

Smelly water may be eliminated or reduced in some waterheater models by replacing the anode(s) with one of lessactive material, and then chlorinating the water heater tankand all hot water lines. Contact the local water heater sup-plier for further information concerning an AnodeReplacement Kit #9000029 and this ChlorinationTreatment.

If the smelly water persists after the anode replacement andchlorination treatment, we can only suggest that continu-ous chlorination and filtering conditioning equipment beconsidered to eliminate the water problem.

Do not remove the anode leaving the tank unprotected.By doing so, all warranty on the water heater tank is voided.

For Your Information

26

HIGH TEMPERATURE SHUT OFF SYSTEM

This water heater is equipped with an automatic gas shutoff system. The high temperature shut off is built into thegas control valve. This system shuts off the gas supply tothe water heater burner when high water temperatures arepresent. It is non-resettable. If the high temperature shut offactivates, the diagnostic indicator light on the front of thethermostat will be “ON” (not blinking) and the gas controlvalve must be replaced. If this were to occur, turn “OFF”the entire gas supply to the water heater. Contact the localgas utility.

NOT ENOUGH OR NO HOT WATER1. Check the manual gas shut off valve to be sure it is open.

2. If the diagnostic indicator on the front of the thermostatis blinking, the control must be manually reset bycycling the control system. To do this, turn the electricalpower supply off and then on.

3. The gas control knob must be turned to the “ON”position.

4. The ON/OFF switch on the control box must be “ON”.

5. The temperature adjustment dial may be set too low. Seethe “Temperature Regulation” section.

6. The gas company can check the gas input to see if it iscorrect. An underfired water heater will not heat water asquickly.

7. Look for leaking or open hot water faucets. Make sureall are closed.

8. The cold water inlet temperature may be colder duringthe winter months. It will take longer to heat the waterand seem like less hot water.

9. If you cannot find what is wrong, call the local gas util-ity and/or plumbing contractor.

WATER IS TOO HOT

1. The temperature adjustment dial may be set too high.See the “Temperature Regulation” section.

NOTE: A period of time is necessary after an adjust-ment has been made for the water temperature toreach the new temperature setting.

2. If lower temperature settings will not lower the watertemperature shut off the water heater and call the localgas utility.

For Your Information (cont’d)Operational Conditions (cont’d)“AIR” IN HOT WATER FAUCETS

VENTING MANUAL RESET SWITCHThere is a venting manual reset switch located on the vent-ing hood. If the switch is activated, it will not reset itself.Before resetting this reset switch, check for flue blockageand propriety of the venting system. To reset, press the redbutton.

BLOWER MOTOR VENTING MANUALRESET SWITCH

VENTING HOOD

WARNINGHYDROGEN GAS: Hydrogen gas can be produced in ahot water system that has not been used for a long periodof time (generally two weeks or more). Hydrogen gas isextremely flammable and explosive. To prevent the pos-sibility of injury under these conditions, we recommendthe hot water faucet be opened for several minutes at thekitchen sink before any electrical appliances which areconnected to the hot water system are used (such as adishwasher or washing machine). If hydrogen gas is pre-sent, there will probably be an unusual sound similar toair escaping through the pipe as the hot water faucet isopened. There must be no smoking or open flame nearthe faucet at the time it is open.

WARNINGShould overheating occur or the gas supply fail to shutoff, turn “OFF” the manual gas control valve to theappliance.

27

Periodic Maintenance

Burner CleaningNOTE: Burner assembly must be handled carefully toavoid damaging the hot surface ignitor.In the event your burner needs cleaning, use the followinginstructions:If inspection of the burner shows that cleaning is required,turn the gas control knob clockwise ( ) to the “OFF”position.Loose deposits on or around the burner can be removed bycarefully using the hose of a vacuum cleaner insertedthrough the access door of the water heater. If the burnerneeds to be removed for additional cleaning, call the localgas utility or qualified service agent to remove and clean theburner and correct the problem that required the burner tobe cleaned.

Venting System InspectionAt least once a year a visual inspection should be made of theventing system. You should look for:1. Obstructions which could cause improper venting. The

combustion and ventilation air flow must not be obstructed.2. Damage or deterioration which could cause improper vent-

ing or leakage of combustion products.3. Rusted flakes around top of water heater.

At least once a year a visual inspection should be made ofthe burner assembly. The drawing is for your reference.You should check for sooting which is not normal and willimpair proper combustion.

Burner Inspection

L.P. Gas Control Valve & BurnerAssembly Replacement Information

WARNINGPROPANE (L.P.) GAS CONTROL VALVE AND BURNERASSEMBLY REPLACEMENT INFORMATION.For Propane (L.P.) Gas Models Only:Your water heater is equipped with a Propane (L.P.) gascontrol valve and a main burner assembly with left handthreads for the following fittings and their connections.

(1) The connection between the manifold and the gascontrol valve (A to B) are left hand threads.

(2) The connection between the main burner orificeand the manifold (C to D) are left hand threads.

For ordering these replacement parts, please refer to the“Repair Parts” section of this manual.

WARNINGSoot build-up indicates a problem that requires correc-tion before further use. Turn “OFF” gas to water heaterand leave “OFF” until repairs are made, because failureto correct the cause of the sooting can result in a fire.

WARNINGFlood damage to a water heater may not be readily visibleor immediately detectible. However, over a period of timea flooded water heater will create dangerous conditionswhich can cause DEATH, SERIOUS BODILY INJURY, ORPROPERTY DAMAGE. Contact a qualified service techni-cian or contractor to replace a flooded water heater. Donot attempt to repair the unit! It must be replaced!

WARNINGIf after inspection of the vent system you found sooting ordeterioration, something is wrong. Call the local gas utility tocorrect the problem and clean or replace the flue and vent-ing before resuming operation of the water heater.

WARNINGChemical vapor corrosion of the flue and vent system mayoccur if air for combustion contains certain chemical vapors.Spray can propellants, cleaning solvents, refrigerator and airconditioner refrigerants, swimming pool chemicals, calciumand sodium chloride, waxes, bleach and process chemicals aretypical compounds which are potentially corrosive.

WARNINGObstructions and deteriorated vent systems may presentserious health risk or asphyxiation.

WARNINGBe sure the vent piping is properly connected to preventescape of dangerous flue gasses which could cause dead-ly asphyxiation.

BA

C

D

28

Periodic Maintenance (cont’d)

ServiceIf a condition persists or you are uncertain about the oper-ation of the water heater, let a qualified person check it out.Call the local utility and/or plumbing contractor.

DrainingThe water heater should be drained if being shut down dur-ing freezing temperatures. Also periodic draining and clean-ing of sediment from the tank may be necessary.1. Turn the gas control knob to the “OFF” position.2. CLOSE the cold water inlet valve to the water heater.3. OPEN a nearby hot water faucet and leave open to

allow for draining.4. Connect a hose to the drain valve and terminate to an

adequate drain.5. OPEN the water heater drain valve to allow for tank

draining.NOTE: If the water heater is going to be shut down anddrained for an extended period, the drain valve shouldbe left open with hose connected allowing water to ter-minate to an adequate drain.

6. Close the drain valve.7. Follow instructions in the “Filling The Water Heater”

section.8. Follow the operating instructions in the “Operation” sec-

tion to restart the water heater.

Failure to install and maintain a new properly listed temperature-pressure relief valve will release the manufacturer from any claimwhich might result from excessive temperature or pressure.

Temperature-Pressure ReliefValve OperationThe temperature-pressure relief valve must be manuallyoperated at least once a year.

TEMPERATURE-PRESSURERELIEF VALVE

DISCHARGE PIPE

HousekeepingVacuum around base of water heater for dust, dirt, and linton a regular basis.

Oiling InstructionsOil Fasco motor only every 12 months with 6 drops of SAE20 motor oil.

WARNINGINSTALLED IN SUITABLE AREA: To insure sufficient venti-lation and combustion air supply, proper clearances from thewater heater must be maintained. See “Locating the NewWater Heater” section. Combustible materials such as cloth-ing, cleaning materials, or flammable liquids, etc. must notbe placed against or adjacent to the water heater which cancause a fire.

WARNINGWhen checking the temperature-pressure relief valveoperation, make sure that (1) no one is in front of oraround the outlet of the temperature-pressure relief valvedischarge line, and (2) that the water manually dischargedwill not cause any property damage because the watermay be extremely hot.If after manually operating the valve, it fails to complete-ly reset and continues to release water, immediately closethe cold water inlet to the water heater, follow the drain-ing instructions, and replace the temperature-pressurerelief valve with a new one.

WARNINGIf the temperature-pressure relief valve on the applianceweeps or discharges periodically, this may be due tothermal expansion. Your water heater may have a checkvalve installed in the water line or a water meter with acheck valve. Consult the water supplier and/or plumb-ing contractor for further information. Do not plug thetemperature-pressure relief valve.

29

Water at the vent pipe is water vapor which hascondensed out of the combustion products. This iscaused by a problem in the vent. Contact the gasutility.

* Condensation may be seen on pipes in humidweather or pipe connections may be leaking.

* The primary anode rod fitting may be leaking.

Small amounts of water from temperature-pressurerelief valve may be due to thermal expansion orhigh water pressure in your area.

* The temperature-pressure relief valve may be leak-ing at the tank fitting.

Water from a drain valve may be due to the valveopened slightly.

* The drain valve may be leaking at the tank fitting.

Combustion products contain water vapor whichcan condense on the cooler surfaces of the tank.Droplets form and drip into the fire or run on thefloor. This is common at the time of startup afterinstallation and when incoming water is cold.

Water in the water heater bottom or on the floormay be from condensation, loose connections, orthe relief valve. DO NOT replace the water heateruntil a full inspection of all possible water sources ismade and necessary corrective steps taken.

Leakage from other appliances, water lines, orground seepage should also be checked.

* To check where threaded portion enters tank, insert cotton swab between jacket opening and fitting. If cotton is wet, follow“Draining” instructions in the “Periodic Maintenance” section and then remove fitting. Put pipe dope or teflon tape on the threadsand replace. Then follow “Filling the Water Heater” instructions in the “Installing the New Water Heater” section.

Leakage Checkpoints

D

E

F

G

A

C

B

H

I

DE

A

CB

B

F

GH

I

CAUTIONRead this manual first. Then before checking the waterheater make sure the gas supply has been turned “OFF”,and never turn the gas “ON” before the tank is com-pletely full of water.

CAUTIONNever use this water heater unless it is completely filledwith water. To prevent damage to the tank, the tank mustbe filled with water. Water must flow from the hot waterfaucet before turning “ON” gas to the water heater.

Use this guide to check a “Leaking” water heater. Manysuspected “Leakers” are not leaking tanks. Often the sourceof the water can be found and corrected.

If you are not thoroughly familiar with gas codes your waterheater, and safety practices, contact the gas utility to checkthe water heater.

30

Troubleshooting

THERMOSTAT AND GAS SUPPLY CHECK

Is thermostat calling for heat?Run (hot) water from heater andturn adjustment knob higher.Check using a manometer atthermostat pressure tap.

Is there a minimum gas pressure4″ W.C. for natural gas or 10″W.C. for propane (L.P.) gas?

GO TO ELECTRICAL SYSTEMCHECK SECTION

Turn “ON” gas supply.

Turn gas cock knob to “ON”.

Call gas company to increasegas pressure.

Yes

Yes

Yes

YesNo

No

Is gas being supplied to thethermostat?

Is gas cock knob turned “ON”?

No

WARNINGThis troubleshooting guide has been supplied for use byqualified service personnel who have a complete under-standing of both electricity and gas.

WARNINGLabel all wiring before disconnecting any wiring; toensure correct reconnection. Failure to follow thisinstruction could cause improper and possible danger-ous operation, resulting in DEATH, SERIOUS BODILYINJURY, OR PROPERTY DAMAGE.

31

Troubleshooting (cont’d)Diagram for “Electrical System Check” on pages 32 and 33.

8

2

NATURAL GAS 4″ W.C. MIN.

PROPANE (LP) GAS 10″ W.C. MIN.

MANIFOLD

ON/OFF SWITCH

HI LIMIT SWITCH

PRESSURE SWITCH

MAIN VALVE

WHC

IGN

ITO

R

BLOWER

N

L1

5

7

6

HI LIMIT

BLOWER

CONTROL

NO

NCPS

C

ON/OFFHOT

NEUTRAL WHITE

GROUND GREEN

BR

OW

N

RED

WHITE

YEL

LOW

BLU

E

BLA

CK

BLU

E

4 W.C.MIN.

87654321012345678

INDICATORLIGHT

NI2L1I1

13567

4

YEL

LOW

BLU

E

WH

ITE

BLA

CK

BLACK RED

7

32

Troubleshooting (cont’d)ELECTRICAL SYSTEM CHECK

(Use diagram on page 31)

Visually check that all compo-nents are wired correctly accord-ing to wiring diagram on unit.

Correct by wiring according todiagram.

Is on/off switch “ON”?

Go to “Thermostat and GasSupply Check” section.

Supply 110/120 volts.

Turn “ON”.

Is diagnostic indicator light“ON”?

Replace control.

No

No

No

Yes

Yes

Yes

Yes

No

Is diagnostic indicator lightblinking?

Turn power “OFF” and back“ON”.

Does power cord or powerwiring have 110/120 voltsavailable (receptacle and/orjunction box) with groundedconnector?

Thermostat is calling for heat.(run cold water)

Yes

No

No

Is there a 115Vvoltage betweenI1 and I2?

No No Replace control.

Yes

Replace hot surface ignitorassembly.

YesDoes burner light –then go out?

Check flame sensor.Make sure it is placed inflame.

Replace hot surface ignitor assembly.

Yes No

Is blower running?

Yes

continued on next page

No

continued on next page

Yes

Does the hot surfaceignitor glow after poweris turned “ON”?

WARNINGLabel all wiring before disconnecting any wiring; toensure correct reconnection. Failure to follow thisinstruction could cause improper and possible danger-ous operation, resulting in DEATH, SERIOUS BODILYINJURY, OR PROPERTY DAMAGE.

33

Troubleshooting (cont’d)

Remove venting system restrictions.

Check at #4 for 115V toground.

Replace Hi-limit switch.

Yes

YesIf OK

Yes

No NoCheck at #7 for 115V toground. Replace control.

continued from facing page


Replace blower. Replace/correct wiring.

YesYesNo


Is burner “ON”?

Yes

All systems operational.

No

Check 1/4″ WC pres-sure at line to airpressure switch.

If OKReplace air pressure switch.

No

Replace thermostat.

INSTALLATIONS WHERE WATER HEATERS ARE MANI-FOLDED: THREE (3) IMPORTANT CONDITIONS THATMUST BE NOTED:

1. All water heaters must be the same model.

2. All water heaters must be evenly spaced to provide iden-tical number of turns, length and size of pipes in eachmanifold. This is absolutely necessary to insure a balancedcondition to all water heaters in the installation.

Installation Diagrams

3. All water heaters are marked identifying the type (instan-taneous storage or circulating) and installation must beappropriate for that type.

HOT WATERSUPPLY

CIRCULATING TANK SYSTEMGAS/WITH SINGLE STORAGE SYSTEM

CHECKVALVE

CHECKVALVE

PUMP

PUMP

COLDWATERSUPPLY

WATERHEATER

STORAGETANK

HOT WATERRETURN

TWO TEMP. WATER HEATERINSTALLATION GAS/INSTAN-

TANEOUS OR STORAGE

CHECKVALVE

MIXINGVALVE

CHECKVALVE

PUMP

PUMP

COLDWATERSUPPLY

FINAL DISHWASHERCONNECTION

DISHWASHER

PRESSUREREDUCING

VALVE

SHOCKABSORBER

WASH TANK INITIALFILL CONNECTION

(OPTIONAL)

WATERHEATER

120°F HOTWATER RETURN

HOTWATERSUPPLY120°F

HWSUPPLY(180°F)

MIXINGVALVE

TWO TEMP.WATER HEATER INSTALLATION

GAS/INSTANTANEOUS or STORAGE

CHECK VALVE

PUMP

PUMP

COLDWATERSUPPLY

WATERHEATER

WATERHEATER

HOTWATERRETURN(180°F)

HOTWATERSUPPLY

WATER HEATER INSTALLATIONGAS/INSTANTANEOUS or STORAGE

CHECKVALVE

PUMP

COLDWATERSUPPLY

WATERHEATER

WATERHEATER

HOT WATERRETURN

34

INSTALLATIONS WHERE WATER HEATERS ARE MANI-FOLDED: THREE (3) IMPORTANT CONDITIONS THATMUST BE NOTED:

1. All water heaters must be the same model.

2. All water heaters must be evenly spaced to provide iden-tical number of turns, length and size of pipes in eachmanifold. This is absolutely necessary to insure a balancedcondition to all water heaters in the installation.

Installation Diagrams (cont'd)

3. All water heaters are marked identifying the type (instan-taneous storage or circulating) and installation must beappropriate for that type.

HOTWATERSUPPLY

WATER HEATER INSTALLATIONGAS/INSTANTANEOUS

or STORAGE

CHECKVALVE

PUMP

COLD WATERSUPPLY

WATERHEATER

WATERHEATER

WATERHEATER

HOT WATERRETURN

HOTWATERSUPPLY

WATER HEATER INSTALLATIONGAS/INSTANTANEOUS or STORAGE

CHECKVALVE

PUMP

COLD WATERSUPPLY

WATERHEATER

WATERHEATER

WATERHEATER

WATERHEATER

HOT WATERRETURN

HOT WATERSUPPLY

COLDWATERSUPPLY

WATERHEATERRETURN

SHOCKABSORBER

PRESSUREREDUCING VALVE

DISHWASHER

PUMP

FINAL DISHWASHERCONNECTION

PUMPCHECKVALVE

CHECKVALVE

WASH TANK INITIALFILL CONNECTION

(OPTIONAL)HW

RETURN(180°)

PRIMARY PLUS BOOSTERWATER HEATER INSTALLATION

GAS/INSTANTANEOUS and or BOOSTER

WATERHEATER

BOOSTERWATERHEATER

35

36

Repair Parts

119

10

32

31

30

20

8

18

21

28

7

24

17

22

16

29

12

15

26

33

23

6

25

14

29

27

19

13

5

Outlet Parts Only3

1

2

34

4

MODEL: 75-70

Repair Parts (cont’d)

Now that you have purchased this Water Heater, should a need ever exist for repair parts or service, simply contact the com-pany it was purchased from or the manufacturer listed on the model rating plate on the water heater.

Be sure to provide all pertinent facts when you call or visit.

Selling prices will be furnished on request or parts will be shipped at prevailing price and you will be billed accordingly.

The model number of your Gas Water Heater will be found on the model rating plate located above the gas control valve.

WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION:MODEL NUMBER (TYPE GAS) NATURAL OR PROPANE (L.P.)SERIAL NUMBER PART DESCRIPTION

PART NUMBER

THIS IS A REPAIR PARTS LIST, NOT A PACKING LIST.

37

KEY PARTNO. DESCRIPTION PART NUMBER1. Vent Cap w/Screen 90019572. Adaptor, Flue Mounting 90027283. 5′ ABS Schedule 40 Vent Pipe 90021064. 90° ABS Schedule 40 Elbow 90021075. Vent/Blower Adapter 90025066. Blower 90026697. Flue Adaptor Gasket 9002567

(6″ x 10.102″)

8. Blower Gasket 90025089. Venting; Manual Reset Switch 900267810. Vent Hood Assembly 900267011. Rubber Gasket – Wiring 900251912. T&P Valve 900072813. Dip Tube 900236514. Anode Rod 900073415. Wiring Harness 900252016. Drain Pan 900160817. Hot Surface Ignition Assembly 900251818. Orifice (Natural) Standard 0230279 (#25)18. Orifice (L.P.) Standard 0230260 (#43)18. Orifice (Nat.) High Altitude 0230142 (#28)18. Orifice (L.P.) High Altitude 0230261 (#44)

* Consists of the following parts:Flue Adaptor 9001290Adaptor Gasket 9001292Adaptor Plate w/Gasket 9001294

KEY PARTNO. DESCRIPTION PART NUMBER19. Burner Assembly (Nat.) 900304019. Burner Assembly (L.P.) 900304820. Inner Door 900028121. Drain Valve (Brass) 900046922. Manifold (Natural) 900265422. Manifold (L.P.) 900265523. Right Access Door w/Gasket 900069524. Left Access Door w/Gasket 900069625A. Access Door Clips (2) 900069425B. Jacket/Access Door Clips (8) 900130526. Pressure Switch (Air) Cover 900256927. Gas Thermostat (Nat.) 900274527. Gas Thermostat (L.P.) 900274628. Power Cord 900309529. Mounting Bracket 900251230. On/Off Switch 900177331. Pressure Switch (Air) 900256832. Flue Baffle Assembly 900265333. Baffle Adaptor Collar Assembly *34. Optional (Deluxe) 9002749

Horizontal Vent Kit

MODEL: 75-70

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Notes

Notes

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instruction manual for light duty commercial power direct vent gas

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