hot water system design manual - ciw manufacturing · commercial and residential indoor units...

Commercial andResidentialindoor units

Rinnai Corporation103 International Drive

Peachtree City, GA 30269

Hot Water SystemDesign Manual

Commercial andResidential

outdoor units

Domestic Hot Water - Standard Piping Installations ............................................ 41 Water Heater .................................................................................................... 41 Water Heater w/Pipe Cover ............................................................................ 52 Water Heaters .................................................................................................. 63 Water Heaters .................................................................................................. 74 Water Heaters .................................................................................................. 85 Water Heaters .................................................................................................. 96 Water Heaters ................................................................................................ 10

Domestic Hot Water with Optional Freeze Protection ........................................111 Water Heater ...................................................................................................112 Water Heaters ................................................................................................ 123 Water Heaters ................................................................................................ 136 Water Heaters ................................................................................................ 14

Domestic Hot Water with Circulation Systems ................................................... 151 Water Heater .................................................................................................. 151 Water Heater w/Electric Water Heater ......................................................... 162 Water Heaters ................................................................................................ 172 Water Heaters w/Gas or Electric Water Heater .......................................... 183 Water Heaters ................................................................................................ 196 Water Heaters ................................................................................................ 20

Domestic Hot Water with Freeze Protection and Circulation System ............ 211 Water Heater .................................................................................................. 212 Water Heaters ................................................................................................ 223 Water Heaters ................................................................................................ 236 Water Heaters ................................................................................................ 24

Domestic Hot Water with Solar Preheat ............................................................... 251 Water Heater w/Circulation System.............................................................. 251 Water Heater w/Backup Storage Tank ......................................................... 26

Domestic Hot Water with Backup Storage Tanks ............................................... 271 Water Heater .................................................................................................. 271 Water Heater w/Secondary Circulation System........................................... 282 Water Heaters ................................................................................................ 292 Water Heaters w/Secondary Circulation System......................................... 303 Water Heaters ................................................................................................ 313 Water Heaters w/Secondary Circulation System......................................... 326 Water Heaters ................................................................................................ 336 Water Heaters w/Secondary Circulation System......................................... 34

C O N T E N T S

Space Heating Only Applications........................................................................... 351 Water Heater - Zone Pumps ......................................................................... 352 Water Heaters - Zone Pumps ....................................................................... 363 Water Heaters - Zone Pumps ....................................................................... 371 Water Heaters - Air Handlers ....................................................................... 381 Water Heaters - Zone Valves ....................................................................... 391 Water Heaters - Floor Radiant ..................................................................... 401 Water Heaters - Floor Radiant w/Buffer Tank ............................................. 41

Combination Domestic Hot Water/Space Heating Applications ....................... 421 Water Heater - Air Handler/Indirect Water Heating..................................... 422 Water Heaters - Air Handler/Indirect Water Heating ................................... 433 Water Heaters - Air Handler/Indirect Water Heating ................................... 441 Water Heater - Air Handler/Direct Water Heating ....................................... 451 Water Heaters - Radiant Heat/Indirect Water Heating ............................... 461 Water Heaters - Radiant Heat/Direct Water Heating .................................. 471 Water Heaters - Heat Exchanger/Direct Water Heating ............................. 481 Water Heaters - Buffer Tank/Direct Water Heating ..................................... 49

Maintenance Procedures ......................................................................................... 50Scale Flush Procedure...................................................................................... 50

Venting Drawings - Rinnai Indoor Water Heaters ............................................... 51Vent Materials .................................................................................................... 51Standard Vent Kit .............................................................................................. 52Horizontal Venting - Vent Heights under 5 feet .............................................. 53Horizontal Venting - Vent Heights 5 feet to 21 feet ....................................... 54Vertical Venting - Vent Heights under 5 feet .................................................. 55Vertical Venting - Vent Heights 5 feet to 21 feet ........................................... 56

System Sizing Charts ............................................................................................... 57Residential Quick Sizing ................................................................................... 57Residential/Commercial Sizing Instructions ..................................................... 581st Hour Demand Chart.................................................................................... 59System Selection Charts - 2424/2402/2532FFU Water Heaters ................... 60System Selection Charts - 2532W Water Heaters ......................................... 62Residential Sizing Rule of Thumb ................................................................... 63Commercial Sizing Rule of Thumb .................................................................. 64

Pump Sizing Data ..................................................................................................... 65Rinnai 2532 Series Water Heater - Flow Capacity Curves ........................... 65Rinnai 2532 Series Water Heater - Pressure Drop Curves .......................... 66Pump Sizing for Backup Storage Applications................................................ 67

C O N T E N T S

Drawing Number:

Drawing Date:

RINNAI 2532 SERIES WATER HEATERSThis drawing is intended only as a guide and not as a replacement for professionally engineered project drawings. It does not imply compliance with local building codes. Installation may vary, depending on installation location, and must be done in accordance with all local building codes. Confer with local building officials before installation.

Pressure Relief Valve

3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

4

103 International DrivePeachtree City, GA 30269

ANSI Z21.10.3CSA 4.3

WH-1

Domestic Hot Water - Standard Installation1 Rinnai Water Heater

Preferred Piping Installation

Rinna i C o n t in u u m

3/4" Gas Supply

3/4" Cold Water Supply Line3/4" Hot Water Supply Line

RinnaiWater Heater

RinnaiEquipment List

RinnaiWater Heaters

BC-45 Controller(Included)

MC-45 and BSC-45 Controllers Optional

QTY

1

1

September 30, 2002

5

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve103 International DrivePeachtree City, GA 30269



3/4" Gas Supply

3/4" Cold Water Supply Line

3/4" Hot Water Supply Line


RinnaiWater Heaters

Recess Box orPipe Cover Box


MC-45 or BSC-45 Controller Optional

QTY

1

1

1

Recess Box or

Pipe Cover Box

RinnaiWater Heater

WH-1-P

Domestic Hot Water - Standard Installation1 Rinnai Water Heater w/Recess Box or Pipe Cover


September 30, 2002

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

6



WH-2

Domestic Hot Water - Standard Installation2 Rinnai Water Heater



Cold Water Supply Line


Hot Water Supply Line

Gas Supply Line

RinnaiWater Heater

Sub 1

RinnaiWater Heater

Primary


RinnaiWater Heaters

MSA-2M Controls



QTY

2

1

2

September 30, 2002

7

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



WH-3

Domestic Hot Water - Standard Installation3 Rinnai Water Heaters


R in na i C onti nuum R in na i C onti nuumR in na i C onti nuum


Gas Supply


RinnaiWater Heater

Sub 1


RinnaiWater Heaters

MSA-2M Controls

MSA-2S Controls



QTY

3

1

1

3

RinnaiWater Heater

Sub 2

RinnaiWater Heater

Primary

September 30, 2002

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

8





WH-4

September 30, 2002



Gas Supply


R in na i C onti nuum

RinnaiWater Heater

Sub 1


RinnaiWater Heaters

MSA-2M Controls

MSA-2S Controls



QTY

4

1

2

4

RinnaiWater Heater

Sub 2

RinnaiWater Heater

Primary

RinnaiWater Heater

Sub 3

9

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve





WH-5



Gas Supply


R in na i C onti nuumR in na i C onti nuum

RinnaiWater Heater

Sub 1


RinnaiWater Heaters

MSA-2M Controls

MSA-2S Controls



QTY

5

1

3

5

RinnaiWater Heater

Sub 2

RinnaiWater Heater

Primary

RinnaiWater Heater

Sub 4

RinnaiWater Heater

Sub 3

September 30, 2002

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

10





WH-6

R innai C onti nuum Rinnai C onti nuumRinnai C onti nuum

Gas Supply

Rinnai C onti nuumRinnai C onti nuum


R innai C onti nuum

Hot Water Supply


RinnaiWater Heaters

MSA-2M Controls

MSA-2S Controls



QTY

6

2

2

6

RinnaiWaterHeater

Primary

RinnaiWaterHeater

Sub 1

RinnaiWaterHeater

Sub 2

RinnaiWaterHeater

Primary

RinnaiWaterHeater

Sub 1

RinnaiWaterHeater

Sub 2

Pressure RegulatorSet to 5 PSI Below

Street Pressue

September 30, 2002

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

12



Domestic Hot Water - Optional Freeze Protection2 Rinnai Water Heaters


WH-2-D

September 30, 2002

Rinnai C ont inuum Rinnai C ont inuum

Gas Supply Line

Cold WaterSupply Line

Hot WaterSupply Line

3/4" Normally OpenSolenoid Valve

Normally ClosedSolenoid Valve

(Full size of supply line)

Route to Floor Drain


S

S

Vacuum Breaker

NOTE:

ALL pipe and fittings shown below dashed line must be located inside home or building structure.

Vacuum breaker line also to be located inside home or building structure.

Heat trace ALL water pipe and f ittings located outside home or building structure. (ALL water pipe and fittings shown above the dashed line in the drawing.)

IMPORTANT!

With electrical power supplied to the Cont inuum 2424, it will not freeze in environments as cold as -30ºF, when protected from direct wind exposure.

In the event of a power failure at temperatures below freezing, the Continuum 2424 should be drained of all water to prevent freezing damage.

The unit may be drained manually, or through the installation of the Optional solenoid valve drain kit shown.

RinnaiWater Heater

Sub 1

RinnaiWater Heater

Primary


RinnaiWater Heaters

MSA-2M Controls



Pipe Cover Boxes or Recess Boxes Optional

QTY

2

1

2

NOTE:

Pipe and fitt ings can be installed inside pipeenclosure or recess box and packed withinsulation for added protection.

13

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve





WH-3-D

September 30, 2002

Rinna i C onti nuum

Gas Supply

Hot WaterSupply Line

Rinna i C onti nuumR inna i C onti nuum


S

S 3/4" MinimumNormally OpenSolenoid Valve

Normally Closed Solenoid Valve(Full size of Cold Water Supply Line)

Route to Drain

NOTE:

ALL pipe and fittings shown below dashed line must be located inside heated space.

It is recommended that the vacuum breaker lines also to be located inside heated space. If they must be located outside, they must be heat traced and insulated.

NOTE:

Heat trace and insulate ALL water pipe and fittings located outside building or in unheated space.

3/4" Vacuum Breaker

RinnaiWater Heater

Sub 2


RinnaiWater Heaters

MSA-2M Controls

MSA-2S Controls




QTY

3

1

1

3

RinnaiWater Heater

Sub 1

RinnaiWater Heater

Primary

NOTE:

Pipe and fittings can be installed inside pipeenclosure or recess box and packed withinsulation for added protection.

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

14





WH-6-D

September 30, 2002

Rinnai C onti nuum Rinnai C onti nuumRinnai C onti nuum

Gas Supply



Rinnai C onti nuum

Hot Water Supply

NOTES:




3/4" Vacuum Breaker

S

Normally Closed Solenoid Valve (Full size of Cold Water Supply Line)

RinnaiWater Heater

Sub 2


RinnaiWater Heaters

MSA-2M Controls

MSA-2S Controls




QTY

6

2

2

6

RinnaiWater Heater

Sub 1

RinnaiWater Heater

Primary

NOTE:

Pipe and fittings can be installed inside pipe cover box or recess box and packed with insulation for added protection.

RinnaiWater Heater

Sub 2

RinnaiWater Heater

Sub 1

RinnaiWater Heater

Primary


Street Pressue

S3/4" MinimumNormally OpenSolenoid Valve

15

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Domestic Hot Water - Circulation Systems1 Rinnai Water Heater


WH-1-R

September 30, 2002


Minimum3/4" Gas Supply

Minimum 3/4" Cold Water Supply Line

Minimum 3/4" Hot Water Supply Line

Building Outlets

(Optional)2-6 GallonStorage Tank(To eliminate cold watersandwich effect caused by frequent On/Off operation)

Pump to run continuously or to be Controlled by Aquastat

Pump to be sized for 3.0 gpm flow @ 12 feet head.Flow Balancing Valve to be adjusted to 3 GPM flow through water heater with no hot water taps open.

Supply and Return lines to be full 3/4" tubing throughout recirculation loop.

Note: Water heater outlet temperature cannot be adjusted when recirc. pump is running.


RinnaiWater Heaters



QTY

1

1

RinnaiWater Heater

Expansion Tank

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

16



Domestic Hot Water - Circulation Systems1 Rinnai Water Heater w/Electric Storage Tank


WH-1-RE

September 30, 2002

Rin nai C ont inuum


Gas Supply Line

2-5 GallonElectric Water

Heater120°F Building Flow

Building Return (Not required to be 3/4" Line)

Building Supply

Expansion TankPump to run continuously or to be Controlled by Timer.

Pump to be sized for Pressure Drop through Building Supply and Return Piping.


RinnaiWater Heaters



QTY

1

1

RinnaiWater Heater

17

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Domestic Hot Water - Circulation Systems2 Rinnai Water Heaters


WH-2-R

September 30, 2002

Rin nai C o nt inuum Rin nai C ont inuum

Gas Supply Line


RinnaiWater Heater

Primary


RinnaiWater Heaters

MSA-2M Controls



QTY

2

1

2

RinnaiWater Heater

Sub 1



Building Outlets



Pump to be sized for 3.0 gpm f low @ 12 feet head.Flow Balancing Valve to be adjusted to 3 GPM flow through water heater with no hot water taps open.

Minimum 3/4" Return LineExpansion Tank

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

18



Domestic Hot Water - Circulation Systems2 Rinnai Water Heaters w/Gas or Electric Tank


WH-2-RGE

September 30, 2002

Ri nnai C ont inuum Ri nnai C ont inuum

Gas Supply Line


RinnaiWater Heater

Primary


RinnaiWater Heaters

MSA-2M Controls



QTY

2

1

2

RinnaiWater Heater

Sub 1


2-30 GallonGas or Electric Water Heater

120°F Building Flow

Building Return (Not required to be 3/4" Line)

Building Supply

Expansion TankPump to run continuously or to be Controlled by Timer.

Pump to be sized for Pressure Drop through Building Supply and Return Piping.

19

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve





WH-3-R

September 30, 2002


Gas Supply


RinnaiWater Heater

Primary


RinnaiWater Heaters

MSA-2M Controls

MSA-2S Controls



QTY

3

1

1

3

RinnaiWater Heater

Sub 1



Building Outlets



Pump to be sized for 3.0 gpm flow @ 12 feet head. Flow Balancing Valve to be adjusted to 3 GPM flow through water heater with no hot water taps open.

Minimum 3/4" Return LineExpansion Tank

RinnaiWater Heater

Sub 2

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

20





WH-6-R

September 30, 2002


Gas Supply



Rinnai C onti nuum

Hot Water Supply


RinnaiWater Heaters

MSA-2M Controls

MSA-2S Controls



QTY

6

2

2

6

RinnaiWaterHeater

Primary

RinnaiWaterHeater

Sub 1

RinnaiWaterHeater

Sub 2

RinnaiWaterHeater

Primary

RinnaiWaterHeater

Sub 1

RinnaiWaterHeater

Sub 2


Minimum 3/4" Hot Water Return Line

Building Outlets




Expansion Tank


Street Pressue

21

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Domestic Hot Water - Freeze Protection/Circulation1 Rinnai Water Heater


WH-1-D-R

September 30, 2002


Minimum 3/4" Gas Supply

S

S 1/4" Minimum Normally Open Solenoid Valve

3/4" Minimum Normally Closed Solenoid Valve


Vacuum Breaker

NOTE:

ALL pipe and fittings shown below dashed line should be located inside home or building structure.

Vacuum breaker line should be located inside home or building structure.

NOTE:


NOTE:


RinnaiWater Heater


RinnaiWater Heaters



Pipe Cover Box or Recess Box Opt ional

QTY

1

1


Building Outlets




Supply and Return lines to

recirculation loop.



Expansion Tank

IMPORTANT!

With electrical power supplied to a Rinnai water heater, it will not freeze in environments as cold as -30ºF, when protected from direct wind exposure.

In the event of a power failure at temperatures below freezing, the water heater should be drained of all water to prevent freezing damage.

The unit may be drained manually, or through the installation of the Optional solenoid valves as shown shown.

The electrical connections for the two solenoid valves should be tied to the 120V power terminals provided on the PCB of the water heater.

When the electrical power to the water heater fails, the 3/4" solenoid valve closes (stopping the flow of water into the heater) and the 1/2" solenoid valve opens (allowing the water heater and associated piping to drain. Insure that you run the drain for the solenoids to the outside environment to prevent discharging water inside the building, causing water damage.

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

22



Domestic Hot Water - Freeze Protection/Circulation2 Rinnai Water Heaters


WH-2-D-R

September 30, 2002

Rin nai C ont inuum Ri nn ai C ont inuum

Gas Supply Line


Vacuum Breaker

NOTE:

ALL pipe and fittings shown below dashed line must be located inside home or building structure.

Vacuum breaker line also to be located inside home or building structure.


IMPORTANT!

With electrical power supplied to the Continuum 2424, it will not freeze in environments as cold as -30ºF, when protected from direct wind exposure.

In the event of a power failure at temperatures below freezing, the Continuum 2424 should be drained of all water to prevent freezing damage.

The unit may be drained manually, or through the installation of the Optional solenoid valve drain kit shown.

RinnaiWater Heater

Sub 1

RinnaiWater Heater

Primary


RinnaiWater Heaters

MSA-2M Controls




QTY

2

1

2

NOTE:


S 3/4" Minimum Normally Open Solenoid Valve



Building Outlets

(Optional)2-10 GallonStorage Tank(To eliminate cold watersandwich effect caused by frequent On/Off operation) Pump to run continuously or

to be Controlled by Aquastat


Minimum 3/4" Return Line


Expansion Tank

Normally Closed Solenoid Valve

(Full size of Cold Water Supply Line)

S

23

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve





WH-3-D-R

September 30, 2002

R inna i C onti nuum

Gas Supply

R inna i C onti nuumRinna i C onti nuum

NOTE:



NOTE:


3/4" Vacuum Breaker

RinnaiWater Heater

Sub 2


RinnaiWater Heaters

MSA-2M Controls

MSA-2S Controls




QTY

3

1

1

3

RinnaiWater Heater

Sub 1

RinnaiWater Heater

Primary

NOTE:

Pipe and fittings can be installed inside pipeenclosure or recess box and packed withinsulation for added protection.

S3/4" Minimum Normally Open Solenoid Valve



Building Outlets






Expansion TankNormally Closed Solenoid Valve

(Full size of Cold Water Supply Line)

Cold Water Supply LineS

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

24





WH-6-D-R

September 30, 2002


Gas Supply



Rinnai C onti nuum

NOTES:


It is recommended that the vacuum breaker lines also to be located inside heated space. I f they must be located outside, they must be heat traced and insulated.


Water heater outlet temperature cannot be adjusted when recirc. pump is running.

3/4" Vacuum Breaker

RinnaiWater Heater

Sub 2


RinnaiWater Heaters

MSA-2M Controls

MSA-2S Controls




QTY

6

2

2

6

RinnaiWater Heater

Sub 1

RinnaiWater Heater

Primary

NOTE:

Pipe and fittings can be installed inside pipe cover box or recess box and packed with insulation for added protection.

RinnaiWater Heater

Sub 2

RinnaiWater Heater

Sub 1

RinnaiWater Heater

Primary


Street Pressue

S3/4" Minimum Normally Open Solenoid Valve



Building Outlets

(Optional)2-30 GallonStorage Tank(To eliminate cold watersandwich effect caused by frequent On/Off operation) Pump to run continuously or

to be Controlled by Aquastat



Expansion TankNormally Closed

Solenoid Valve(Full size of Cold

Water Supply Line)

Cold Water Supply LineS

25

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Domestic Hot Water - Circulation w/Solar Preheat1 Rinnai Water Heater


WH-1-SR

September 30, 2002


RinnaiWater Heaters


QTY

1

1

Gas Supply Mixing Valve Set to DeliverBuilding Hot Water @ 120 °F

R inna i C onti n uum

RinnaiWater Heater

Set @ 120°F

Solar Water Heater


NOTE:

Installation of the Solar Water Heater, Storage Tank, and all interconnecting pipe and fittings must be installed per the solar water heater manufacturer and all local building codes.



Building Outlets



Pump to be sized for 3.0 gpm f low @ 12 feet head.Flow Balancing Valve to be adjusted to 3 GPM flow through water heater with no hot water taps open.

Supply and Return lines to be full 3/4" tubing throughout recirculation loop.

Expansion Tank

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

26



Domestic Hot Water - Backup Storage w/Solar Preheat1 Rinnai Water Heater


WH-1-SB

September 30, 2002


Rinnai Commercial Water Heaters

MCC-45 Controller(Included)

QTY

1

1

Gas Supply

Mixing Valve Set to DeliverBuilding Hot Water @ 120 °F

Rinna i C onti nuum

RinnaiWater Heater

Set @ 140°F

Storage Tank

(No Burner or Heating Element)

SubmersibleAquastat

(set @ 120 °F)

Pump sized for 5 gpm @ 24' head

Solar Water Heater


NOTE:

Installation of the Solar Water Heater, Storage Tank, and all interconnecting pipe and fittings must be installed per the solar water heater manufacturer and all local building codes.

Expansion Tank

27

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Domestic Hot Water - Backup Storage1 Rinnai Water Heater


WH-1-B

September 30, 2002



MCC-45 Controller(Inc.uded)

QTY

1

1

Gas Supply

Building Hot WaterSupply Line

Rinna i C onti nuum

RinnaiWater Heater

Set @ 140°F

Storage Tank


SubmersibleAquastat

(set @ 120 °F)



Pump/Aquastat Control Wire

Expansion Tank

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

28



Domestic Hot Water - Backup Storage/Circulation1 Rinnai Water Heater


WH-1-B-R

September 30, 2002




QTY

1

1

Gas Supply


R inna i C onti nuum

RinnaiWater Heater

Set @ 140°F

Storage Tank


SubmersibleAquastat

(set @ 120 °F)



Building Hot WaterReturn Line

Secondary Pump


Expansion Tank

29

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Domestic Hot Water - Backup Storage2 Rinnai Water Heaters


WH-2-B

September 30, 2002

Gas Supply


R inna i C onti nuumR inna i C onti nuum


Storage Tank






QTY

2

2

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F


SubmersibleAquastat

(set @ 120 °F)

Expansion Tank

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

30



Domestic Hot Water - Backup Storage/Circulation2 Rinnai Water Heaters


WH-2-B-R

September 30, 2002

Gas Supply


Rinnai C onti nuumRinna i C onti nuum


Storage Tank






QTY

2

2

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F


SubmersibleAquastat

(set @ 120 °F)


Secondary Pump

Expansion Tank

31

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve





WH-3-B

September 30, 2002

Rinna i C onti nuum

Gas Supply


Rinna i C onti nuumR inna i C onti nuum


Storage Tank






QTY

3

3

RinnaiWater Heater

Set @ 140°F


SubmersibleAquastat

(set @ 120 °F)

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F

Expansion Tank

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

32





WH-3-B-R

September 30, 2002

Rinna i C onti nuum

Gas Supply


Rinna i C onti nuumRinna i C onti nuum


Storage Tank







QTY

3

3

RinnaiWater Heater

Set @ 140°F


SubmersibleAquastat

(set @ 120 °F)

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F

Expansion Tank

33

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve





WH-6-B

September 30, 2002


Gas Supply




Rinnai C onti nuum

500 GallonStorage Tank






QTY

6

6

RinnaiWater Heater

Set @ 140°F


SubmersibleAquastat

(set @ 120 °F)

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F

Expansion Tank

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

34





WH-6-B-R

September 30, 2002

Rinnai C onti nuum Rinnai C onti nu umRinnai C o nti nuum

Gas Supply




Rinnai C on ti nuum

500 GallonStorage Tank






QTY

6

6

RinnaiWater Heater

Set @ 140°F


SubmersibleAquastat

(set @ 120 °F)

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°F

RinnaiWater Heater

Set @ 140°FExpansion

Tank


Secondary Pump

Expansion Tank

35

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Space Heating - Zone Pumps1 Rinnai Water Heater


SH-1-ZP

September 30, 2002

Gas Supply

Zone 1Space HeatingZones

TT

Zone 2T

Zone 3T

Zone 4T

R in n a i C onti nuum

NOTES:

Primary Pump sized for6 gpm @ 30' head.

Primary Pump to be Interlocked with Room T'Stats

Primary Pump

RinnaiWater Heater


Rinnai CommercialWater Heaters

MCC-45 Controllers(Included)

QTY

1

1

PressureReducing Valve(As Required)

Expansion Tank

Cold Water Supply

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

36





SH-2-ZP

September 30, 2002


Gas Supply

Zone 1Space HeatingZones

TT

Zone 2T

Zone 3T

Zone 4T

P-2 P-3 P-4 P-5

R in n a i C onti nu um

NOTES:



Primary Pump

RinnaiWater Heater




QTY

2

2

RinnaiWater Heater


Expansion Tank

Cold Water Supply

37

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve





SH-3-ZP

September 30, 2002

Rinna i C onti nuum Rinnai C onti nuumRinna i C onti nuum

Gas Supply

Zone 1

Zone 4

Zone 3

Zone 2

Space Heating

ZoneT

T

T

T

Bypass Line

Primary Pump

NOTES:



RinnaiWater Heater




QTY

3

3

RinnaiWater Heater

RinnaiWater Heater


Expansion Tank

Cold Water Supply

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

38



Space Heating - Air Handlers1 Rinnai Water Heater


SH-1-AH

September 30, 2002


Gas Supply

Bypass Line

AirHandler

T

NOTES:






QTY

1

1

RinnaiWater Heater

Primary Pump

AirHandler

T

Expansion Tank

Cold Water Supply

39

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Space Heating - Zone Valves1 Rinnai Water Heater


SH-1-ZV

September 30, 2002

R in n a i C onti n uum

Gas Supply

S

S

S

S

Zone 1

Zone 4

Zone 3

Zone 2

Space Heating

Zone

T

T

T

T

Pressure Bypass Valve

NOTES:

Primary Pump sized for6 gpm @ 30' head + Head Loss through Heating Zones.





QTY

1

1

RinnaiWater Heater


Expansion Tank

Cold Water Supply

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

40



Space Heating - Floor Radiant Heating1 Rinnai Water Heater


SH-1-RH-ZP-MV

September 30, 2002


Gas Supply

Zone 1

Space HeatingZones

T

Zone 2T

M

NOTES:






QTY

1

1

RinnaiWater Heater

Primary Pump


Expansion Tank

Cold Water Supply

41

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Space Heating - Floor Radiant Heating w/Buffer Tank1 Rinnai Water Heater


SH-1-BT-RH-ZP-MV

September 30, 2002


Gas Supply

Zone 1

Space HeatingZones

T

Zone 2T

M

Primary Pump Controlled by Aquastat

Water Heateror

StorageBuffer Tank


SubmersibleAquastat

(set @ 120 °F)

Pump/AquastatControl Wiring

RinnaiWater Heater

@ 140°F




QTY

1

1

NOTES:


Primary Pump to be Interlocked with Storage Tank Aquastat.


Expansion Tank

Cold Water Supply

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

42




Gas Supply

AirHandler

T

AirHandler

T

Indirect Water Heater

Dom

estic

Hot

Wat

er S

uppl

y

Dom

estic

Col

dW

ater

Sup

ply

Primary Pump

NOTES:


Primary Pump to be Interlocked with Room T'Stats and Indirectwater heater pump.




QTY

1

1

RinnaiWater Heater

Expansion Tank

Cold Water Supply

Combination Systems - Air Handlers/Indirect Hot Water1 Rinnai Water Heater


CH-1-AH-IWH

September 30, 2002

43

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve




Gas Supply


AirHandler

T

AirHandler

T


Dom

estic

Hot

Wat

er S

uppl

y

Dom

estic

Col

dW

ater

Sup

ply

Primary Pump

NOTES:






QTY

2

2

RinnaiWater Heater

RinnaiWater Heater

Expansion Tank

Cold Water Supply

Combination Systems - Air Handlers/Indirect Hot Water2 Rinnai Water Heaters


CH-2-AH-IWH

September 30, 2002

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

44



R in n a i C o nti nuum

Gas Supply

R in n a i C on ti nuum

AirHandler

T

AirHandler

T


Dom

estic

Hot

Wat

er S

uppl

y

Dom

estic

Col

dW

ater

Sup

ply

Primary Pump

NOTES:






QTY

3

3

RinnaiWater Heater

RinnaiWater Heater

RinnaiWater Heater

R in n a i C o nti nuum

Expansion Tank

Cold Water Supply

Combination Systems - Air Handlers/Indirect Hot Water3 Rinnai Water Heater


CH-3-AH-IWH

September 30, 2002

45

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve




Gas Supply

AirHandler

T

Building HotWater Supply Outlets

NOTES:

Primary Pump sized for6 gpm @ 30' head + Head Loss through Air Handler and Piping System.





QTY

1

1

RinnaiWater Heater

Expansion Tank

Cold Water Supply

Primary Pump

Combination Systems - Air Handlers/Direct Hot Water1 Rinnai Water Heater


CH-1-AH-DHW

September 30, 2002

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

46



R in n a i C onti nu um

Gas Supply

Zone 1

Space HeatingZones

T

Zone 2T

M


Dom

estic

Hot

Wat

er S

uppl

y

Dom

estic

Col

dW

ater

Sup

ply

Primary Pump

NOTES:


Primary Pump to be Interlocked with Room T'Stats and Indirect Water Heater Pump.




QTY

1

1

RinnaiWater Heater


Expansion Tank

Cold Water Supply

Combination Systems - Radiant Heat/Indirect Hot Water1 Rinnai Water Heater


CH-1-ZP-MV-IWH

September 30, 2002

47

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve




Gas Supply

Zone 1

Space HeatingZones

T

Zone 2T

PressureReducing

Valve(As required) M


Primary Pump

NOTES:


Primary Pump to run continuously.




QTY

1

1

RinnaiWater Heater

Expansion Tank

Cold Water Supply

Combination Systems - Radiant Heat/Direct Hot Water1 Rinnai Water Heater


CH-1-ZP-MV-DWH

September 30, 2002

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

48




Gas Supply

Water to Water Heat Exchanger

T

Primary Pump

Domestic Hot Water Taps

RadiantHeating

NOTES:

Primary Pump sized for6 gpm @ 30' head + Head Loss through Heat Exchanger.

Primary Pump to run continuously.




QTY

1

1

RinnaiWater Heater

Expansion Tank

Cold Water Supply

Combination Systems - Heat Exchanger/Direct Hot Water1 Rinnai Water Heater


CH-1-DWH-HX

September 30, 2002

49

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Gas Supply

Storage Tank


Rinna i C onti nuum


Zone 1

Space HeatingZones

T

Zone 2T

M


BackflowPreventers

Pump sized for system head losses.


SubmersibleAquastat

(set @ 120 °F)




QTY

1

1

RinnaiWater Heater

Set @ 140°F

Expansion Tank

Cold Water Supply

Combination Systems - Buffer Tank/Direct Hot Water1 Rinnai Water Heater


CH-1-B-DWH

September 30, 2002

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

50



Maintenance - Scale Flush Procedure1 Rinnai Water Heaters


M-1-F

September 30, 2002


Gas Supply

RINNAI Water Heater Flush Procedure

1. Disconnect power to Rinnai water heater.2. Close valves V3 and V4.3. Connect pump outlet hose H1 to service valve V2.4. Connect drain hose H3 to valve V1.5. Pour approximately 4 gallons of virgin, food grade, white vinegar (or virgin, food grade, citric acid) into pail.6. Place free ends of hose H2 and H3 into pail.7. Open valves V1 and V2.8. Turn on power to circulating pump and allow solution to circulate through water heater for 45 minutes.9. Turn off power to circulating pump.10. Remove free end of hose H3 from pail.11. Close valve V2 and open valve V4, only. Do NOT open valve V3 at this time.12. Allow water to flow out of hose H3 for 5 minutes, rinsing cleaning solution from water heater.13. Close valve V1 and open valve V3.14. Disconnect hoses H1 and H3 from service valves.15. Remove in-line filter from water heater cold water inlet and clean out any residue. Place filter back into unit.16. Restore power to water heater.

V1

V3

V2

V4

H1

H2

H3

Circulating Pump

5 gallon pail of virgin, food grade, white vinegar (or virgin, food grade, citric acid).

Cold Water LineHot Water Line

In-lineFilter

51

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve



Rinnai Venting MaterialsIndoor Water Heaters

Vent Parts and Dimensions

V-PTS

September 30, 2002

Standard Vent Discharge Kit(Order Part No: STD-KIT)

Wall Discharge Terminal (35" Length)Part No: 50223098B

Horizontal Discharge AdapterPart No: 50710327

Vertical Discharge AdapterPart No: 224064

Note: Required where vent height is greater than 5 feet vertical.

Roof Flashing AssemblyFlat Roof

Part No: 1461411/12 to 6/12 Pitch (5-25 deg)



Part No: 50171953

Miscellaneous Parts

Condensate CollectorPart No: 224069

Roof Discharge TerminalPart No: 184118

39" Vent Pipe ExtensionPart No: 224053

19.5" Vent Pipe ExtensionPart No: 224052

10" Vent Pipe ExtensionPart No: 224051

90 Degree Vent Pipe ElbowPart No: 224063

45 Degree Vent Pipe Elbow (Quantity of 2)

Part No: 224050

Vent Pipe ClampPart No: 169044

2'-6"

9 1/8"4

7/8"

4 7/

8"

4 7/

8"

19 1/8" 38 3/4"

5 3/16"

5 3/16"

5 3/16"

18"

26"

6"

7"

6 1/

2"

3"

25"6" 4"

7 3/4"

8"

9 3/4"

8 1/8"

3/4" dia.

Note: When installed, each connecting vent pipe joint will have 1 1/4" of overlap.

Rubber Wall Plate (Qty in STD-KIT)Part No: 710342

7"

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

52



Rinnai VentingIndoor Water Heaters

Standard Vent Kit

V-STD

September 30, 2002

Notes: 1. Install 1 pipe clamp adjacent to each joint in the venting system.

2. Total "Equivalent Length" of vent system is limited to 41' Equivalent Length, where a 90 deg elbow is equivalent to 6' of vent pipe and a 45 deg elbow is equivalent to 1.5' of vent pipe.

3. Regardless of the calculated "Equivalent Length" of vent system, the Maximum Height from the top of the water heater to the top of the highest point in the vent system is limited to 21 feet.

Horizontal Discharge Adapter

Wall Discharge Terminal(Cut to Length)



53

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve




Horizontal Venting - Vent Heights under 5 feet

V-H-L5

September 30, 2002

Vertical Discharge Adapter


3'-2 1/2"Max. Height of 5' without Condensate Collector Installed.

(As Shown)

90 Deg Elbow

Vent Extension

Vent Extensions




Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

54




Horizontal Venting - Vent Heights 5 feet to 21 feet

V-H-G5

September 30, 2002






4'-0"

90 Deg Elbow

Vent Extensions

Vent Extensions

Condensate Collector

3/4" CPVC Drain Line (Provided by others)

Maximum Height = 21' For Vent Heights Greater Than 5', but less than 21' the Condensate Collector

Must Be Installed.

55

Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve




Vertical Venting - Vent Heights under 5 feet

V-V-L5

September 30, 2002

3'-10 1/2"MAXIMUM 5'

(Without Condensate Collector Installed)


Vent Extension

90 Deg Elbow

Roof Terminal Assembly

Roof Flashing Assembly




3'-3"MAXIMUM 5' (Without Condensate Collector Installed)




Drawing Number:

Drawing Date:



3/4" Ball Valve

3/4" Union

Check Valve

Key

S

Pressure Regulator

Circulating Pump

Solenoid Valve

Boiler Drain Valve

56




Vertical Venting - Vent Heights 5 feet to 21 feet

V-V-G5

September 30, 2002




5'-1 3/4"


Must Be Installed. Vent Extension





Vent Extension

Vent Extension

Vent Extension

90 Deg Elbow90 Deg Elbow

90 Deg Elbow


Condensate CollectorMust Be Installed within 5'

of Continuum 2402


90 Deg Elbow





5'-1 1/2"


Must Be Installed.

57

Notes: 1.multiple plumbing systems using combinations of bathrooms and fixtures found in the chart below. Otherwise,

2.capacity, use the Rinnai "Residential/Commercial Sizing Charts".

3.

1 - 1.5 Bath 2 - 2.5 bath 3 - 3.5 Bath 4 - 4.5 Bath 5 - 5.5 Bath 6 - 6.5 Bath1 Rinnai WH 1 Rinnai WH 1 Rinnai WH 2 Rinnai WHs 2 Rinnai WHs 2 Rinnai WHs

1 - 1.5 Bath 2 - 2.5 bath 3 - 3.5 Bath 4 - 4.5 Bath 5 - 5.5 Bath 6 - 6.5 Bath1 Rinnai WHs 1 or 2 Rinnai WHs 1 or 2 Rinnai WHs 2 or 3 Rinnai WHs 2 or 3 Rinnai WHs 2 or 3 Rinnai WHs

1 - 1.5 Bath 2 - 2.5 bath 3 - 3.5 Bath 4 - 4.5 Bath 5 - 5.5 Bath 6 - 6.5 Bath2 Rinnai WHs 2 or 3 Rinnai WHs 2 or 3 Rinnai WHs 3 or 4 Rinnai WHs 3 or 4 Rinnai WHs 3 or 4 Rinnai WHs

2. Determine if any baths have multi-head shower/body spray systems or large tubs (garden, jetted, etc. above 60 gallons).3. Determine if the multi-head shower/body spray system has 1/2" shower valves or 3/4" shower valves.4. Use the appropriate section of the table below to determine the number of Rinnai Water Heaters Required.

120+ gallon tub (garden, jetted, etc.). All other baths having 1 tub/shower combo with 1/2" shower valve and 2.5 gpm shower.

B. High End Residential Applications – Master bath having multi-head shower/body spray system with 1/2" shower valve and/or

Residential Quick Sizing Chart Rinnai Residential Water Heaters

(Applications without Storage Tanks)

A. Standard Residential Applications – Each bath having 1 tub*/shower combo with 1/2" shower valve and 2.5 gpm shower. * tub sizes (garden, jetted, etc.) up to 60 gallon size.

For very large homes, including those with 7 or more bathrooms, plumbing systems may be separated into

use the Rinnai "Residential/Commercial Sizing Charts".

40°F, the Rinnai Water Heater outlet flow rate may vary.The sizing chart below is based upon a 40°F groundwater temperature. For ground water temperatures below

For homes with more than 1 multi-head shower/body spray systems, or multiple tubs greater than 60 gallon

Residential Quick Sizing Instructions1. Determine the Number of Bathrooms in Home.

60 to 120 gallon tub (garden, jetted, etc.). All other baths having 1 tub/shower combo with 1/2" shower valve and 2.5 gpm shower.

C. Custom Residential Applications – Master bath having multi-head shower/body spray system with 3/4" shower valve and/or

Notes: 1.

2.

3.

4.

5.

6. If you are designing a system with space heating, move over to the 2nd Hour Rating column and find the Rating equal to or greater than the Total Hourly Hot Water Demand calculated in step 1. Now move to the column on the far left of the chart to find the number of Rinnai Water Heaters that will be required with your storage tank OR move to the column on the far right of

the chart to find the number of Rinnai Water Heaters that will be required for your application without using a storage tank.

2. Multiply the Total Hourly Hot Water Demand by 0.2 to determine the amount of storage capacity required.

4. Using the Hourly Demand – System Selection Chart, go to the "Storage Tank Capacity" Column and go down in the

5. If you are designing a system without space heating, move over to the 1st Hour Rating column and find the Rating equal to or (Note: DO NOT select a storage tank with a capacity smaller than the storage capacity calculated.)

the chart to find the number of Rinnai Water Heaters that will be required for your application without using a storage tank.

column until you find the section having a storage capacity equal to or greater than the storage capacity calculated in step 2.

3. Select the correct "Hourly Demand – System Selection Chart" for the Rinnai Water Heater and ground water temperature.

When using Rinnai Water Heaters for residential systems having a space heating load, you MUST use Rinnai

1. Determine the Total Hourly Hot Water Demand using the 1st Hour Hot Water Demand Chart (add space heating hourly demandResidential/Commercial Sizing Instructions

Residential/Commercial Sizing Charts Rinnai Residential and Commercial Water Heaters

(Applications with or without Storage Tanks)

"Commercial" water heaters (i.e. 2532W-C, 2532FFU-C, etc.

The Hot Water Demand Chart that follows is based upon data obtained from the 1999 ASHRAE Applications Handbook, building codes, and water heater manufacturers.

For Restaurant applications having a commercial dishwasher, a hot water circulating loop feeding the

load if applicable – to calculate space heating hourly demand, use the hourly demand values found at the bottom of the chart.)

circulating loop having a minimum circulating flow of 3 gpm.Rinnai water heaters cannot be used in applications requiring 180-195°F water at a DISHWASHER or OTHER EQUIPMENT, unless a booster heater capable of producing 180-195°F water is provided at the

heater in these applications.

greater than the Total Hourly Hot Water Demand calculated in step 1. Now move to the column on the far left of the chart to find the number of Rinnai Water Heaters that will be required with your storage tank OR move to the column on the far right of

When sizing commercial applications without storage, piping systems should be designed with a hot water

commercial dishwasher must be installed.

DISHWASHER or OTHER EQUIPMENT – The Rinnai water heaters are NOT to be used as a booster water

58

Residential – 1 to 1.5 Bathroom Home (Add demand for any specialty fixtures)

– 3 to 3.5 Bathroom Home (Add demand for any specialty fixtures)– 4 to 4.5 Bathroom Home (Add demand for any specialty fixtures)– 5 to 5.5 Bathroom Home (Add demand for any specialty fixtures)– 6 to 6.5 Bathroom Home (Add demand for any specialty fixtures)– Additional Bathrooms (for homes with seven or more bathrooms)

Residential Specialty Fixtures– Tubs (Garden, Jetted, etc.) Capacities over 60 gallons– Shower/Body Spray System with 1/2" Shower Valve– Shower/Body Spray System with 3/4" Shower Valve (126 gallons per hour) X (Number of Shower/Body Spray Systems)

– Business/Convention Center

– Assisted Care Facilities (9.2 gallons per hour) X (Number of Beds)

– Whirlpool Tubs, etc.

Space Heating Applications (for All Building Occupancies)– Total Space Heating Load for 10°F ∆T Hydronic Systems (0.005 gallons per hour) X (Btuh of Space Heating Load)– Total Space Heating Load for 20°F ∆T Hydronic Systems (0.0025 gallons per hour) X (Btuh of Space Heating Load)– Total Space Heating Load for 30°F ∆T Hydronic Systems (0.00167 gallons per hour) X (Btuh of Space Heating Load)

– Three Bedroom (4/5 Persons) (29.1 gallons per hour) X (Number of Rooms)

Apartment Buildings

1st Hour Hot Water Demand ChartResidential/Commercial Sizing

Rinnai Residential and Commercial Water Heaters

– One Bedroom (2 Persons) (13.2 gallons per hour) X (Number of Rooms)

Restaurants

(40 gallons per hour) X (Number of fixtures)


Laundries

– Lavatory

– Wash Basin (30 gallons per hour) X (Number of fixtures)


Building Occupancy Hot Water Demand (Gallons per Hour)

60 gallons per hour– 2 to 2.5 Bathroom Home (Add demand for any specialty fixtures) 72 gallons per hour

– Two Bedroom (3 Persons) (19.8 gallons per hour) X (Number of Rooms)

90 gallons per hour

(0.8 gallons per hour) X (gallons of tub capacity)(74 gallons per hour) X (Number of Shower/Body Spray Systems)

152 gallons per hour172 gallons per hour192 gallons per hour(20 gallons per hour) X (Number of additional bathrooms)

(0.8 gallons per hour) X (gallons of tub capacity)

Hotel/Motel


Hospitals, Health Clubs, Schools, Correctional Facilities

– Arm or Sitz Bath– Leg Bath (100 gallons per hour) X (Number of fixtures)– Hydrotherapeutic Shower (400 gallons per hour) X (Number of fixtures)

– Penthouse with 2 Suites and Spa (39.6 gallons per hour) X (Number of Rooms)

– Shower (30 gallons per hour) X (Number of fixtures)

(19.8 gallons per hour) X (Number of Rooms)

– 3 Star Accommodation

– Retirement Community – One Bedroom Units – Retirement Community – Two Bedroom Units

(13.2 gallons per hour) X (Number of Rooms)

– Triple Pot Sink (90 gallons per hour) X (Number of fixtures)– Double Pot Sink (60 gallons per hour) X (Number of fixtures)

– Kitchen or Service Sink


– 4 & 5 Star Vacation/Resort Accommodation (18 gallons per hour) X (Number of Rooms)

– Bar Sink (30 gallons per hour) X (Number of fixtures)

– Prewash (closed type) (240 gallons per hour) X (Number of fixtures)– Recirculating prewash

(3.0 gallons per hour) X (Total Pounds Capacity of all washers)– Commercial/Industrial (Must know Machine Poundage)

– Lavatories (each) (5 gallons per hour) X (Number of fixtures)

– Coin Operated (with residential and commercial machines) (18.5 gallons per hour) X (Number of washers)

(32 gallons per hour) X (Number of Rooms)

– Vegetable Sink

(12 gallons per hour) X (Number of Rooms)Nursing Homes, Convalescence Homes, etc.

– Commercial Dishwasher (Door Type) (104 gallons per hour) X (Number of fixtures)IMPORTANT: See Notes 4 and 5 in the Sizing Instructions!


– Automatic Drive Thru Bay (up to 25 gpm system) (600 gallons per hour) X (Number of Bays)

(0.00125 gallons per hour) X (Btuh of Space Heating Load)– Total Space Heating Load for 40°F ∆T Hydronic Systems

Car Wash – Self Service Wash Bay (up to 4 gpm wand) (40 gallons per hour) X (Number of Bays)

– Commercial Dishwasher (Conveyer Type)

(180 gallons per hour) X (Number of fixtures)– Prewash (hand-operated) (45 gallons per hour) X (Number of fixtures)– Prescrapper (open type)

– Single Pot Sink (30 gallons per hour) X (Number of fixtures)

59

Number of Rinnai Water Heaters

(with Storage Tank)

Max. Gas Consumption(1000 Btuh)

Storage Tank Capacity(gallons)

1st Hour Rating (gph)(for Sizing Systems without Space Heat)

2nd Hour Rating (gph)(for Sizing Systems with Space Heat)

Approx. Recovery Time (min.)

Number of Rinnai Water Heaters(w/out Storage)

1 180 20 188 174 7 1

1 180 30 195 174 10 12 360 30 369 348 5 2

1 180 40 202 174 14 22 360 40 376 348 7 3

1 180 50 209 174 17 22 360 50 383 348 9 33 540 50 557 522 6 4

1 180 80 230 174 28 32 360 80 404 348 14 43 540 80 578 522 9 5

1 180 120 258 174 41 32 360 120 432 348 21 43 540 120 606 522 14 54 720 120 780 696 10 6

1 180 160 286 174 55 42 360 160 460 348 28 53 540 160 634 522 18 64 720 160 808 696 14 75 900 160 982 870 11 86 1080 160 1156 1044 9 9

1 180 240 342 174 83 52 360 240 516 348 41 63 540 240 690 522 28 74 720 240 864 696 21 85 900 240 1038 870 17 96 1080 240 1212 1044 14 107 1260 240 1386 1218 12 118 1440 240 1560 1392 10 129 1620 240 1734 1566 9 13

1 180 320 398 174 110 72 360 320 572 348 55 83 540 320 746 522 37 94 720 320 920 696 28 105 900 320 1094 870 22 116 1080 320 1268 1044 18 128 1440 320 1616 1392 14 149 1620 320 1790 1566 12 1510 1800 320 1964 1740 11 1612 2160 320 2312 2088 9 18

1 180 360 426 174 124 72 360 360 600 348 62 83 540 360 774 522 41 94 720 360 948 696 31 105 900 360 1122 870 25 116 1080 360 1296 1044 21 128 1440 360 1644 1392 16 149 1620 360 1818 1566 14 1510 1800 360 1992 1740 12 1612 2160 360 2340 2088 10 1815 2700 360 2862 2610 8 21

1 180 400 454 174 138 82 360 400 628 348 69 93 540 400 802 522 46 104 720 400 976 696 34 115 900 400 1150 870 28 126 1080 400 1324 1044 23 138 1440 400 1672 1392 17 159 1620 400 1846 1566 15 1610 1800 400 2020 1740 14 1712 2160 400 2368 2088 11 1915 2700 400 2890 2610 9 22

1 180 480 510 174 166 92 360 480 684 348 83 103 540 480 858 522 55 114 720 480 1032 696 41 125 900 480 1206 870 33 136 1080 480 1380 1044 28 148 1440 480 1728 1392 21 169 1620 480 1902 1566 18 1710 1800 480 2076 1740 17 1812 2160 480 2424 2088 14 2015 2700 480 2946 2610 11 2318 3240 480 3468 3132 9 26

( at 40 °F Ground Water Temperature and 140°F Supply Water Temperature)2532FFU Series Water Heaters

Hourly Demand – System Selection Chart

60


(with Storage Tank)







3 540 500 872 522 57 124 720 500 1046 696 43 135 900 500 1220 870 34 146 1080 500 1394 1044 29 158 1440 500 1742 1392 22 179 1620 500 1916 1566 19 1810 1800 500 2090 1740 17 1912 2160 500 2438 2088 14 2115 2700 500 2960 2610 11 2418 3240 500 3482 3132 10 27

3 540 600 942 522 69 134 720 600 1116 696 52 145 900 600 1290 870 41 156 1080 600 1464 1044 34 168 1440 600 1812 1392 26 189 1620 600 1986 1566 23 1910 1800 600 2160 1740 21 2012 2160 600 2508 2088 17 2215 2700 600 3030 2610 14 2518 3240 600 3552 3132 11 2820 3600 600 3900 3480 10 3024 4320 600 4596 4176 9 34

3 540 700 1012 522 80 154 720 700 1186 696 60 165 900 700 1360 870 48 176 1080 700 1534 1044 40 188 1440 700 1882 1392 30 209 1620 700 2056 1566 27 2110 1800 700 2230 1740 24 2212 2160 700 2578 2088 20 2415 2700 700 3100 2610 16 2718 3240 700 3622 3132 13 3020 3600 700 3970 3480 12 3224 4320 700 4666 4176 10 3625 4500 700 4840 4350 10 37

3 540 800 1082 522 92 174 720 800 1256 696 69 185 900 800 1430 870 55 196 1080 800 1604 1044 46 208 1440 800 1952 1392 34 229 1620 800 2126 1566 31 2310 1800 800 2300 1740 28 2412 2160 800 2648 2088 23 2615 2700 800 3170 2610 18 2918 3240 800 3692 3132 15 3220 3600 800 4040 3480 14 3424 4320 800 4736 4176 11 3825 4500 800 4910 4350 11 3928 5040 800 5432 4872 10 42

3 540 1000 1222 522 115 204 720 1000 1396 696 86 215 900 1000 1570 870 69 226 1080 1000 1744 1044 57 238 1440 1000 2092 1392 43 259 1620 1000 2266 1566 38 2610 1800 1000 2440 1740 34 2712 2160 1000 2788 2088 29 2915 2700 1000 3310 2610 23 3218 3240 1000 3832 3132 19 3520 3600 1000 4180 3480 17 3724 4320 1000 4876 4176 14 4125 4500 1000 5050 4350 14 4228 5040 1000 5572 4872 12 4530 5400 1000 5920 5220 11 4732 5760 1000 6268 5568 11 4935 6300 1000 6790 6090 10 52

Hourly Demand – System Selection Chart2532FFU Series Water Heaters

( at 40 °F Ground Water Temperature and 140°F Supply Water Temperature)

61


(with Storage Tank)







1 199 20 215 201 6 12 398 20 416 402 3 23 597 20 617 603 2 3

1 199 40 229 201 12 22 398 40 430 402 6 33 597 40 631 603 4 4

1 199 50 236 201 15 22 398 50 437 402 7 33 597 50 638 603 5 4

1 199 80 257 201 24 32 398 80 458 402 12 43 597 80 659 603 8 5

1 199 120 285 201 36 32 398 120 486 402 18 43 597 120 687 603 12 54 796 120 888 804 9 6

1 199 160 313 201 48 42 398 160 514 402 24 53 597 160 715 603 16 64 796 160 916 804 12 75 995 160 1117 1005 10 86 1194 160 1318 1206 8 9

1 199 240 369 201 72 52 398 240 570 402 36 63 597 240 771 603 24 74 796 240 972 804 18 85 995 240 1173 1005 14 96 1194 240 1374 1206 12 107 1393 240 1575 1407 10 118 1592 240 1776 1608 9 129 1791 240 1977 1809 8 13

1 199 320 425 201 96 62 398 320 626 402 48 73 597 320 827 603 32 84 796 320 1028 804 24 95 995 320 1229 1005 19 106 1194 320 1430 1206 16 118 1592 320 1832 1608 12 139 1791 320 2033 1809 11 1410 1990 320 2234 2010 10 1512 2388 320 2636 2412 8 17

1 199 360 453 201 107 72 398 360 654 402 54 83 597 360 855 603 36 94 796 360 1056 804 27 105 995 360 1257 1005 21 116 1194 360 1458 1206 18 128 1592 360 1860 1608 13 149 1791 360 2061 1809 12 1510 1990 360 2262 2010 11 1612 2388 360 2664 2412 9 1815 2985 360 3267 3015 7 21

1 199 400 481 201 119 72 398 400 682 402 60 83 597 400 883 603 40 94 796 400 1084 804 30 105 995 400 1285 1005 24 116 1194 400 1486 1206 20 128 1592 400 1888 1608 15 149 1791 400 2089 1809 13 1510 1990 400 2290 2010 12 1612 2388 400 2692 2412 10 1815 2985 400 3295 3015 8 21

1 199 480 537 201 143 92 398 480 738 402 72 103 597 480 939 603 48 114 796 480 1140 804 36 125 995 480 1341 1005 29 136 1194 480 1542 1206 24 148 1592 480 1944 1608 18 169 1791 480 2145 1809 16 1710 1990 480 2346 2010 14 1812 2388 480 2748 2412 12 2015 2985 480 3351 3015 10 2318 3582 480 3954 3618 8 26

Hourly Demand – System Selection ChartRinnai 2532W Series Water Heaters


62


(with Storage Tank)







3 597 500 953 603 50 114 796 500 1154 804 37 125 995 500 1355 1005 30 136 1194 500 1556 1206 25 148 1592 500 1958 1608 19 169 1791 500 2159 1809 17 1710 1990 500 2360 2010 15 1812 2388 500 2762 2412 12 2015 2985 500 3365 3015 10 2318 3582 500 3968 3618 8 26

3 597 600 1023 603 60 124 796 600 1224 804 45 135 995 600 1425 1005 36 146 1194 600 1626 1206 30 158 1592 600 2028 1608 22 179 1791 600 2229 1809 20 1810 1990 600 2430 2010 18 1912 2388 600 2832 2412 15 2115 2985 600 3435 3015 12 2418 3582 600 4038 3618 10 2720 3980 600 4440 4020 9 2924 4776 600 5244 4824 7 33

3 597 700 1093 603 70 144 796 700 1294 804 52 155 995 700 1495 1005 42 166 1194 700 1696 1206 35 178 1592 700 2098 1608 26 199 1791 700 2299 1809 23 2010 1990 700 2500 2010 21 2112 2388 700 2902 2412 17 2315 2985 700 3505 3015 14 2618 3582 700 4108 3618 12 2920 3980 700 4510 4020 10 3124 4776 700 5314 4824 9 3525 4975 700 5515 5025 8 36

3 597 800 1163 603 80 154 796 800 1364 804 60 165 995 800 1565 1005 48 176 1194 800 1766 1206 40 188 1592 800 2168 1608 30 209 1791 800 2369 1809 27 2110 1990 800 2570 2010 24 2212 2388 800 2972 2412 20 2415 2985 800 3575 3015 16 2718 3582 800 4178 3618 13 3020 3980 800 4580 4020 12 3224 4776 800 5384 4824 10 3625 4975 800 5585 5025 10 3728 5572 800 6188 5628 9 40

3 597 1000 1303 603 100 184 796 1000 1504 804 75 195 995 1000 1705 1005 60 206 1194 1000 1906 1206 50 218 1592 1000 2308 1608 37 239 1791 1000 2509 1809 33 2410 1990 1000 2710 2010 30 2512 2388 1000 3112 2412 25 2715 2985 1000 3715 3015 20 3018 3582 1000 4318 3618 17 3320 3980 1000 4720 4020 15 3524 4776 1000 5524 4824 12 3925 4975 1000 5725 5025 12 4028 5572 1000 6328 5628 11 4330 5970 1000 6730 6030 10 4532 6368 1000 7132 6432 9 4735 6965 1000 7735 7035 9 50

Hourly Demand – System Selection ChartRinnai 2532W Series Water Heaters


Residential Rule of Thumb

Combination of Bathroomswith 2.5 GPM Shower/Tubcombos. (No high flow fix-tures in home.)

Combination of Bath-rooms with 7.0 GPMBody Sprays and Whirl-pool Tubs.

⇒⇒⇒⇒⇒

⇒⇒⇒⇒⇒

Combination of Bathroomswith 2.5 GPM Shower/Tubcombos. (No high flow fix-tures in home.)

Combination of Bath-rooms with 7.0 GPMBody Sprays/WhirlpoolTubs and 2.5 GPMShower/Tub combos.

⇒⇒⇒⇒⇒

IMPORTANT: Assumes mixed flow rates shown and 65°F groundwater. One Rinnai water heater will provide hot wa-ter to more fixtures, but at a reduced pressure andflow.

⇒⇒⇒⇒⇒

63

64

Commercial Rule of ThumbExisting or SpecifiedEquipment

Rinnai Replacement Equipment

199,000 Btu/100 gallonWater Heater




⇒⇒⇒⇒⇒

⇒⇒⇒⇒⇒

⇒⇒⇒⇒⇒

⇒⇒⇒⇒⇒

+ 120 gallonstorage

+ 80 gallonstorage

+ 120 gallonstorage

+ 120 gallonstorage

of

or

or

or

65

1 Unit 2 Units 3 Units 4 Units 5 Units140 2.4 4.8 7.2 9.6 11.9135 2.5 5.0 7.4 9.9 12.4130 2.6 5.1 7.7 10.3 12.9125 2.7 5.3 8.0 10.7 13.4120 2.8 5.6 8.4 11.1 13.9115 2.9 5.8 8.7 11.6 14.5110 3.0 6.1 9.1 12.2 15.2105 3.2 6.4 9.6 12.7 15.9100 3.3 6.7 10.0 13.4 16.795 3.5 7.0 10.6 14.1 17.690 3.7 7.4 11.1 14.9 18.685 3.9 7.9 11.8 15.7 19.780 4.2 8.4 12.5 16.7 20.975 4.5 8.9 13.4 17.8 22.370 4.8 9.6 14.3 19.1 23.965 5.1 10.3 15.4 20.6 25.760 5.6 11.1 16.7 22.3 27.955 6.1 12.2 18.2 24.3 30.450 6.7 13.4 20.1 26.7 33.445 7.4 14.9 22.3 29.7 37.140 8.4 16.7 25.1 33.4 41.835 8.5 16.9 25.4 33.8 42.330 8.5 16.9 25.4 33.8 42.325 8.5 16.9 25.4 33.8 42.320 8.5 16.9 25.4 33.8 42.315 8.5 16.9 25.4 33.8 42.310 8.5 16.9 25.4 33.8 42.3

Temperature Rise (°F)

Rinnai 2532 Water Heaters – Manifold Installations

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

0 25 50 75 100 125 150

∆T – Temperature Rise (°F)

Hot

Wat

er F

low

Rat

e (g

pm)

1 Unit

2 Units

3 Units

4 Units

5 Units

SPECIFICATIONS V2532W V2532FFUMaximum/Minimum gas rate (Input BTU's) 199,000 BTU's - 15,000 BTU's 180,000 BTU's - 15,000 BTU'sEnergy Factor (EF) Natural Gas: 0.82 Propane: 0.84 Natural Gas: 0.82 Propane: 0.87Hot water capacity range 0.5 to 8.5 GPM 0.5 to 8.5 GPMMaximum hot water capacity, (35°F rise) 8.45 GPM (507 GPH) 8.45 GPM (507 GPH)Maximum hot water capacity, (77°F rise) 4.26 GPM (256 GPH) 3.87 GPM (232 GPH)Maximum hot water capacity, (90°F rise) 3.64 GPM (219 GPH) 3.30 GPM (198 GPH)NOx Emissions (at 3% O2) less than 40 ppmSetpoint Temperature (without remote) Factory setting - 120°FTemperature range with remoteKeypads connected

MC controller : 96 - 140°FBC and BSC controller : 96 - 120°F

66

Rinnai 2532W and 2532FFU Pressure Drop CurvesPressure Loss vs. Water Flow

0.0

5.0

10.0

15.0

20.0

25.0

30.0

0 1 2 3 4 5 6 7 8 9Water Flow (gpm)

Pres

sure

Los

s (p

si)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

Pres

sure

Los

s (ft

hea

d)

67

345678910

33

5 gpm @ 24' head12

141516171819

238 gpm @ 35' head245 gpm @ 35' head

224 gpm @ 35' head231 gpm @ 35' head

203 gpm @ 35' head210 gpm @ 35' head217 gpm @ 35' head

189 gpm @ 35' head196 gpm @ 35' head

182 gpm @ 35' head

34

168 gpm @ 35' head

35

175 gpm @ 35' head

31

147 gpm @ 35' head

32

154 gpm @ 35' head161 gpm @ 35' head

28

126 gpm @ 35' head133 gpm @ 35' head

30

140 gpm @ 35' head

29

26

112 gpm @ 35' head

27

119 gpm @ 35' head

24

98 gpm @ 35' head

25

105 gpm @ 35' head

70 gpm @ 35' head77 gpm @ 35' head

23

91 gpm @ 35' head

202122

1112 84 gpm @ 35' head

35 gpm @ 35' head42 gpm @ 35' head49 gpm @ 35' head56 gpm @ 35' head

10 gpm @ 24' head

13

21 gpm @ 35' head28 gpm @ 35' head

63 gpm @ 35' head

Pump Sizing Chartfor Backup Storage Applications

Using Rinnai Commercial Water Heaters

Number of Rinnai Water Heaters Pump Flow Requirements

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