installation operation maintenance - trane vn · 2020. 10. 26. · the trane hfce and hfxe units...
TRANSCRIPT
UNT-SVX06H-GB
Fan coil unitsHFCE, HFXE, VFCE, VFXE seriesSizes 03 to 20 - 500 to 3400 m3/h
Installation Operation
Maintenance
Original instructions
Table of Contents
UNT-SVX06H-GB2 © 2015 Trane
General information ..........................................................................................4Unit/Motor/Coil ....................................................................................................................... 4Model Nomenclature .............................................................................................................. 5General illustration of the unit ............................................................................................... 7
Installation .........................................................................................................9Receiving and handling .......................................................................................................... 9Installation considerations ..................................................................................................... 9Mounting ................................................................................................................................. 9Duct connections .................................................................................................................. 10Piping..................................................................................................................................... 10Electrical connections ........................................................................................................... 10
Dimensional data and weights ......................................................................13
Start-up/operation .......................................................................................... 18
Maintenance .................................................................................................... 19Periodic maintenance checklist ............................................................................................ 19Maintenance procedures ..................................................................................................... 19Maintenance contract ........................................................................................................... 20Training .................................................................................................................................. 20
UNT-SVX06H-GB 3
General Information
This service manual covers the installation, operation and maintenance of the Trane HFCE, HFXE, VFCE andVFXE chilled water Fan Coil. It should be read thoroughly before installing the fan coil unit.
Unit/Motor/Coil
Unit Data
The Trane Fan Coil unit is fabricated with a rigidgalvanized steel casing. The DIDW centrifugal fans havebalanced, galvanized steel, and forward curved blades.
For ease of servicing, the fan board can be simplyremoved from the unit by loosening the fasteners from the rear of the coil section.
An optional return air plenum with insulation is available to allow the connection of a variety of fi lters.
Motor
Each motor is a permanent split capacitor type for maximum effi ciency and minimum noise with permanently lubricated, sealed sleeve bearings.
The motor capacitor is totally enclosed in a metal shield, and attached to the motor. The motor lead-out wires are enclosed in a fl exible metal conduit to provide protectionagainst damage.
Coil
The coil can have 2, 3 or 4 rows for sizes 03 to 12 and 3 or 4 rows for HFCE 16 and 20, with copper tubes mechanically bonded into aluminum fi n collars.
Water inlet/outlet connections are 3/4” female pipethread for sizes 03 to 12 and 1/2” for sizes 16 and 20.
Cooling only coils have one set of connections. Coils with hot water heating option have two sets of connections. Header assembly is a one-piece casting which accepts steel pipe directly - copper-to-steel adapters are not required. Header assembly is rigidly attached to unit casing, so the assembly is not subject tostress when making chilled water connections to unit.
A manual air vent is fi tted with a drain line to the drain pan to avoid any water drips when venting.
A water drain is located at the bottom of the coil header.
The drain pan has one 3/4” male pipe thread.
UNT-SVX06H-GB4
General Information
DIGIT 1 - Plant
K = Kolin
DIGIT 2 - Position
H = Horizontal
V = Vertical (Size 03-12)
DIGIT 3 - Unit Type
F = Fan Coil
DIGIT 4 - Casing
C = Concealed
X = Exposed (Size 03-12)
DIGIT 5 - Design Sequence
E = First design
DIGIT 6,7 - Unit Size
03 = 500 m3/h, 300 CFM
04 = 710 m3/h, 400 CFM
06 = 1000 m3/h, 600 CFM
08 = 1250 m3/h, 800 CFM
10 = 1600 m3/h, 1000 CFM
12 = 2000 m3/h, 1200 CFM
16 = 2700 m3/h, 1600 CFM (HFCE only)
20 = 3400 m3/h, 2000 CFM (HFCE only)
DIGIT 8 - Coil row, connection side
C = 3 Row cooling, Right hand
D = 3 Row cooling, Left hand
E = 4 Row cooling, Right hand (HFCE/HFXE 03-12)
F = 4 Row cooling, Left hand (HFCE/HFXE 03-12)
DIGIT 9 - Electric Heater
0 = None
A = 1.0 kW Heater (Size 03)
B = 1.5 kW Heater (Size 04, 06)
C = 2.0 kW Heater (Size 04, 06, 08, 10, 16, 20)
D = 3.0 kW Heater (Size 08, 10, 12)
F = 4.0 kW Heater (Size 12, 16, 20)
G = 6.0 kW Heater (Size 16, 20)
DIGIT 10 - Motor Type
N = STD. ESP W/O high temperature cutout (0-30 Pa)
H = High ESP W/O high temperature cutout (30-60Pa) (Size 03-12)
DIGIT 11 - Voltage / Phase / Hertz
1 = 220 - 240 V / 1Ph / 50 Hz
2 = 220 - 240 V / 1Ph / 60 Hz
DIGIT 12 - Control valve package (Pipe system and
cooling & heating)
0 = Without valve package
A* = 2 pipe system with single 2-way valve
B* = 2 pipe system with single 3-way valve
C = 2 Pipe System With single Cooling&Heating Thermostat controlling valve only (Digital + Back Light)
D* = 2 Pipe System With single Cooling&Heating Thermostat controlling valve only (Digital + Back Light)/With 2-Way Valve
E* = 2 Pipe System With single Cooling&Heating Thermostat controlling valve only (Digital + Back Light)/With 3-Way Valve
F = 2 Pipe System With single Cooling&Heating Thermostat controlling valve only (Digital)
G* = 2 Pipe System With single Cooling&Heating Thermostat controlling valve only (Digital)/With 2-Way Valve
H* = 2 Pipe System With single Cooling&Heating Thermostat controlling valve only (Digital)/With 3-Way Valve
I = 2 Pipe System With single Cooling&Heating Thermostat controlling valve and Fancoil (Digital + Back Light)
J* = 2 Pipe System With single Cooling&Heating Thermostat controlling valve and Fancoil (Digital + Back Light)/with 2-Way Valve
K* = 2 Pipe System With single Cooling&Heating Thermostat controlling valve and Fancoil (Digital + Back Light)/With 3-Way Valve
L = 2 Pipe System With single Cooling&Heating Thermostat controlling valve and Fancoil (Digital)
M* = 2 Pipe System With single Cooling&Heating Thermostat controlling valve and Fancoil (Digital)/With 2-Way Valve
N* = 2 Pipe System With single Cooling&Heating Thermostat controlling valve and Fancoil (Digital)/with 3-Way Valve
P = 2 Pipe System With single Cooling&Heating Thermostat controlling valve + Elec. Heater (Digital)
Q* = 2 Pipe System With single Cooling&Heating Thermostat controlling valve + Elec. Heater (Digital)/With 2-Way Valve
R* = 2 Pipe System With single Cooling&Heating Thermostat controlling valve + Elec. Heater (Digital)/With 3-Way Valve
V = 2 Pipe System With single Cooling&Heating Thermostat controlling valve and Fancoil (Manual on/off type)
W = 2 Pipe System With single Cooling&Heating Thermostat controlling Fancoil Only (Manual on/off type)
* Size 03-12
Model Nomenclature
K H F C E 0 3 C 0 N 1 0 A A A B X X X W
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
UNT-SVX06H-GB 5
DIGIT 13 - Terminal box
A = Same side as water connections
DIGIT 14 - Return Plenum / Filter
A = With insulated back return plenum / No fi lter(HFCE/HFXE 03-12)
B = With insulated back return plenum / Nylon media
C = With insulated back return plenum / 20 mmaluminium fi lter (HFCE/HFXE 03-12)
G = With Nylon fi lter (only for VFXE, VFCE)
I = With back return plenum / Nylon media (HFCE/HFXE 03-12)
J = With back return plenum / 20mm aluminium fi lter (HFCE/HFXE 03-12)
DIGIT 15 - Drain pan length and materials.
A = Aluminium alloy “5052”
C = Aluminium alloy “5052”, increment in length 310 mm(HFCE 03-12)
D = Stainless steel materiál, increment in length 310 mm (HFCE 03-12)
F = Stainless steel material
DIGIT 16 – Packaging
A = Standard staked on pallet (HFCE 03-12)
B = Individual packed in cardboard box
DIGIT 17 - Not used
DIGIT 18 - Not used
DIGIT 19 - Not used
DIGIT 20 - Special customer design
W = Without
S = With special design
General Information
UNT-SVX06H-GB6
General Information
General illustration of the unit
Figure 1 - HFCE - HFXE 03 to 12
Figure 2 - HFCE 16 and 201. Motor2. Fan board3. Air outlet collar4. Electric heater5. Coil head support6. Drain Pan7. Filter (Option)8. Plenum9. Electrical box
TERMINAL BLOCK
COIL HEADER SUPPORT
WATER INLETWATER OUTLET
DRAIN PAN
WATER COIL
ELECTRIC HEATER
FAN MOTOR
FAN BLOWER
AIR FILTER
AIR OUTLET COLLAR
UNT-SVX06H-GB 7
Figure 3 - VFCE - VFXE 03 to 12
1. Motor2. Fan3. Coil4. Junction box5. Discharge air grille6. Drain pan
General Information
5
4
3
12
6
UNT-SVX06H-GB8
Installation
CAUTION: The installation must be conducted by a
qualifi ed technician.
Receiving and handling
Trane fan Coil units are packaged in individual cartonsfor maximum protection during shipment, as well as for easy handling and storage on the job site.
To protect against loss from in-transit damage, complete the following upon receipt of the units:
1. Inspect individual pieces of the shipment beforeaccepting it. Check for rattles, bent corners on cartons or other visible indications of shipping damage.
2. If a carton has apparent damage, open it immediatelyand inspect the contents before accepting the unit. Do not refuse the shipment. Make specifi c notationsconcerning the damage on the freight bill. Check the unit casing, fan rotation, coils, drain pan, fi lters andall options.
3. Inspect the unit for concealed damage before it isstored and as soon as possible after delivery.
4. Do not remove damaged material from the receiving location if possible. It is the receiver’s responsibility to provide reasonable evidence that concealed damage was not incurred after delivery.
5. If concealed damage is discovered, stop unpackingthe shipment. Retain all internal packing and cartons.Take photos of the damaged material if possible.
6. Notify the carrier’s terminal of damage immediatelyby phone and mail if any damage is found. Request an immediate joint inspection of the damage by the carrier and consignee.
7. Notify the Trane sales representative of the damageand arrange for repair. Do not repair the unit, however, until damage is inspected by the carrier’srepresentative.
WARNING! Wear protection gloves when handling theunit. When removing the unit from its pallet, do not handle it by pipes, spigots, valves, drain pan, control panel, or fresh air inlet. Pay attention to not damage the unit.
Installation considerations
For proper installation and operation, check each of thefollowing before mounting the units:
1. Allow adequate space for the unit and free air orservice clearances. See Figures 7-9 for general unit dimensions. For servicing and routine maintenance, provide access to the unit through removable panels in the ceiling.
2. Before installing any unit make sure properpreparation has been made at each unit location for piping and electrical connections.
3. Check that the supporting structure is strong enoughto support unit weights.
4. All units must be mounted level to assure properdrainage and operation.
5. Ducting connected to units (where applicable) shouldnot exceed the external static pressure rating of the unit.
6. Insulation of the chilled water valves should be provided by installer.
Mounting
The Trane HFCE and HFXE units are designed to besuspended from the ceiling on 16mm (3/8”) threaded rods furnished by the installer.
Holes are provided at the top of the unit.
To install the Trane model HFCE and HFXE, complete thefollowing:
1. Install the suspension rods or other suspensiondevices which must be provided by the installer.
2. Put the upper screw nuts and lock washers onsuspension rods to prevent unit from upward tilting during unit operation or duct installation.
3. House the unit into position.
4. Put on the lock washers and then nuts to secure theunit.
5. Level the unit casing to avoid poor condensatedrainage by adjusting lower nuts up/down, and then tighten the upper nuts.
Note: Level the unit by checking on the unit casing.Do not use the coil or drain pan for leveling as they are pitched to provide proper drainage.
UNT-SVX06H-GB 9
Duct connections
A certain gauge galvanized sheet metal duct (supplied by the installer) can be attached to duct collars provided at the unit air outlet and inlet, see Figures 6, 7 and 8 for duct collar dimensions.
Two approaches can be used to attach an Air SupplyChamber and fl exible ducts:
The fi rst one is to put down the collar, directly plug the duct into fl ange and then vertically fi x them together, see fi gure 5B.
The other is to slip the duct over the unit outlet collar and then horizontally fasten the duct and collar together with screws or rivets, as shown on fi gure 5A. Fieldsupplied transition fi ttings should be used in installations where unit duct collars do not match discharge air-grille collars.
A return duct can be attached to the return air collar provided at the unit in the same way as the above second one.
Piping
Chilled water connections
To complete piping connections, attach the water pipingwith 3/4” male pipe screw connection to the unit.
The water inlet is on the bottom and water outlet on the top of the coil. Coil connection size and coil connection locations are given on Figure 6 to 10.
Condensate Drain Connections
Either PVC pipe or steel pipe with 3/4” female pipe thread connection can be used as a drain line.
Attach the drain line to the drain connection with tapesealant to prevent leakage. A drain line pitch with a minimum slope of 1/50 is recommended.
Main Power supply
It is the responsibility of the installer, to ensure that:
- Units are protected by an electrical disconnecting device such as a fuse or circuit breaker.
- Power supply cable is correctly attached with correctly sized system (ex: gland) in order to avoid it to be pulled out or pushed into the control box.
Electrical connections
For wiring and installion, refer to the wiring diagram
decals on each unit.
All electrical connections have to be made on the terminals blocks of the main electrical control box.
A grounding point, which must be properly connected to the building grounding system.
All electrical connections are to be made in accordance with local electrical codes and ordinances.
WARNING: Disconnect electrical power source and
secure in disconnected position before servicing the
unit. Failure to do so may result in personal injury or
death from electrical shock.
CAUTION: Use only copper conductors for wiring
connections. Unit terminals are not designed to accept
other types of wiring. Aluminum or other conductors
may cause overheating and unit damage.
WARNING! If an electric heater is connected by an installer, operation of the electric heater must be subordinated to operation of the fan.
All power supply wiring must be sized and selected in accordance with local code and regulation.
Fast-acting circuit breaker, which is sensitive to very lowlevels of current leakage to ground (max 30 mA) must be installed as a general line protection.
Installation
UNT-SVX06H-GB10
Installation
Figure 4 - Typical installation with ceiling return
Figure 5 - Ductwork attachment
1. Return air2. Supply air3. Ceiling4. Supporting structure5. Unit6. Expansion joint7. Suspension rod8. Lock washer9. Nut
4
3
12
DET "A"
A - SCREW B - RIVET
A B
UNT-SVX06H-GB 11
Figure 6 - Clearance recommendations
Table 1 - HFCE rectangular connections
HFCE 03 04 06 08 10 12 16 20Rectangular connection
( ) (mm)( )( ) 123x480 123x730 123x865 123x1150 123x1319 123x919 123x1069 337x1069
Installation
HFCE Sizes 03-12 Sizes 16-20E (mm) 141 141F (mm) 143 143G (mm) 210 255H (mm) 276 253
UNT-SVX06H-GB12
Dimensional data and weights
Dimensional data
Fig 7 - HFCE Concealed Horizontal model (Right Hand)
1 = Filter2 = Hanger holes × 43 = Water connections ¾“ FPT4 = Drain connection ¾“ MPT5 = Coil6 = Drain pan7 = Water outlet8 = Water inlet9 = Electrical box10 = Plenum11 = Air outlet
Notes :1. Right hand coil connection show, 4 row coil2. Wiring connection same side as coil and drain pan connections3. Power supply cable and control connection cable are not packaged with the unit and should be supplied by contractor
DET A
A
246
D
275
4038
ABC 29
112
11,5Ø
19Ø
15
261124
60
216
100 121
45
130
582
23
1
2
3
4
5 6 7 8 9 10
11
UNT-SVX06H-GB 13
Fig 8 - HFXE Exposed Horizontal model (Right Hand)
Dimensional data and weights
1 = Casing2 = Discharge air grille3 = Water outlet ¾“4 = Water inlet ¾“5 = Drain connection ¾“ MPT6 = Filter7 = Hanger holes × 48 = Drain pan9 = Electrical box
Notes :1. Right hand coil connection, 3 row coil show2. Wiring connection same side as coil and drain pan connections3. Power supply cable and control connection cable are not packaged with the unit and should be supplied by contractor
DET A
A
266
610
64
120
275
287,6
B 254
18
A18
D
15
19Ø
11,5Ø
1 2
3
45
6
7
8
9
42 526
42
182
UNT-SVX06H-GB14
Dimensional data and weights
Fig 9 - HFCE 16 & 20 Concealed horizontal model (Right Hand)
703
395 312 337
310
62
205
A
B
D
C
1 2 3
4
5
6
7
Legend
1. Filter2. Motor3. Fan4. Electrical box5. Drain pan6. Coil7. Water connections
UNT-SVX06H-GB 15
Table 2 - HFCE - HFXE 03-12 dimensions and weights
External dimensions Net weight
Model Amm
Bmm
C*mm
Dmm
3 Rowkg
4 Rowkg
HFCE 03 480 530 680 488 23 25HFCE 04 730 780 920 738 30 31HFCE 06 865 915 1065 873 33 35HFCE 08 1150 1200 1350 1158 41 43HFCE 10 1320 1370 1520 1328 52 55HFCE 12 1570 1620 1770 1578 58 63HFCE 16 920 932 1091 894 55 57HFCE 20 1070 1087 1245 1046 60 62HFXE 03 882 530 - 488 30 - HFXE 04 1122 780 - 738 39 - HFXE 06 1243 915 - 873 42 - HFXE 08 1603 1200 - 1158 52 - HFXE 10 1723 1370 - 1328 60 - HFXE 12 1963 1620 - 1578 69 -
* Standard drain pan
Fig 10 - VFCE Concealed Vertical model (Right Hand)
Dimensional data and weights
1 23
12
4
144
5
10
11
13
6
8
716
9
246121 74121 59
636
274
6013
0
Legend
1. Filter2. Fan3. Motor4. Drain pan5. Coil6. Adjusting bolt7. Drain Hose (not included in the unit)8. 2-Way/3-way valve (option)9. Rear panel10. Air outlet11. Water outlet12. Electric heater13.Water inlet14. Electrical box15. Left end panel16. Operation panel17. Front panel18. Discharge air grille19. Discharge panel20. Right end panel21. Footing panel
UNT-SVX06H-GB16
Dimensional data and weights
Fig 11 - VFXE Exposed Vertical model (Right Hand)
Table 3 - VFCE-VFXE dimensions and weights
External dimensions Net weight of 3 row coilunitkgModel A
mmL
mm
VFCE 03 480 750 23VFCE 04 730 955 30VFCE 06 865 1090 33VFCE 08 150 1375 43VFCE 10 1320 1545 52VFCE 12 1570 1795 58VFXE 03 880 - 30VFXE 04 130 - 39VFXE 06 1265 - 42VFXE 08 1550 - 52VFXE 10 1720 - 60VFXE 12 1970 - 69
Notes:
1. Right hand coil connection show, normal 3 row coil unit
2. Wiring connection same side as coil and drain pan connections (except VFXE)
3. Access door below unit required to service fan motor
4. Power supply cable and control connection cable are not packaged with the unit and should be supplied bycontractor.
14 1 23 4
5
6
7 8
20
1918171615
4
21
13
12
11
9
637
24742 120
1217059
60
130
Legend
1. Filter2. Fan3. Motor4. Drain pan5. Coil6. Adjusting bolt7. Drain Hose (not included in the unit)8. 2-Way/3-way valve (option)9. Rear panel10. Air outlet11. Water outlet12. Electric heater13.Water inlet14. Electrical box15. Left end panel16. Operation panel17. Front panel18. Discharge air grille19. Discharge panel20. Right end panel21. Footing panel
UNT-SVX06H-GB 17
Start-up / Operation
Preparation
Before starting the unit, complete the above mentioned installation instructions to ensure the proper start-up preparation is completed.
Operation
Fan coil operation can be controlled by a simple motor speed switch or a thermostat unit.
The wall-mounted thermostat unit usually includes a motor speed switch, an on/off switch and a thermostat.
The on/off switch turns the unit on and off and the motor speed switch controls the fan speed. The thermostat controls the water valve and usually has a dial to select an approximate setting temperature.
If the associated thermostat is not used for control, the installer should choose other type of thermostat which complies with the safety codes.
The simple motor speed switch, labeled Off-Hi-Med-Low, controls the fan coil by turning the switch to different speed for adjusting the air fl ow.
For the unit with electric heater option, a hightemperature cutout with automatic reset is provided to de-energize electric heat in the event of an overheat condition. In addition to the automatic reset cutout, the unit also equipped with another high temperature cutout with manual reset. These two temp. cutouts provide double protection for electric heat operation. If the ambient temperature is higher than 26°C, the electric heater should not be turned on.
If the coil is circulated by hot water, the water temperature should not exceed 60°C.
Coil venting
When water is fi rst introduced into a coil, air issometimes trapped in the coil tubing. This trapped air has a tendency to collect at the highest point in the coil.
Therefore, a manual air vent is installed at the highest point of the header. When there appears to be airtrapped in the coil, resulting in “bubbling” or “clanking” noises within the unit, release air from the manual air vent by rotating the knob. A pair of pliers can be used if the knob is too tight to turn by hand. Turn knob counterclockwise 1-2 turns and allow air to fl ow out of the air vent until a steady stream of water appears. Then retighten knob.
Operating limits at water side
- Water pressure must not exceed 16 bars (1.6 Mpa).
- Water temperature must not exceed 95°C.
- Minimal water temperature depends on glycol percentage.
UNT-SVX06H-GB18
Maintenance
Periodic maintenance checklist
The following checklist is provided as a recommended maintenance schedule.
Detailed instructions for specifi c maintenanceprocedures are given after the checklist.
WARNING: Disconnect electrical power source and secure in disconnected position before servicing the unit. Failure to do so may result in personal injury or deathfrom electrical shock.
Every month:
• Inspect the unit air fi lter. Clean or replace cloggedfi lter element.
• Check the drain pan to be sure that it is clean and freeto carry the fl ow of condensate through the drain line.
Every year:
• Inspect the unit casing for corrosion. Clean or repairto provide unit protection.
• Inspect the fan wheel and housing for damage.Rotate the fan wheel manually to be sure noobstructions block its movement.
• Inspect the coil fi ns for excessive dirt or damage.Remove dirt and straighten fi ns.
• Clean and tighten all electrical connections.
• Drain and treat the whole system to control pipe scaling.
CAUTION: The use of untreated or improperly treated
water in this equipment may result in scaling, erosion,
corrosion, algae or slime. The services of a qualifi ed
water treatment specialist should be engaged to
determine what treatment if any, is advisable. Trane
assumes no liability for the results of the use of
untreated or improperly treated water.
Maintenance procedures
Change/Clean Filters
Change or clean air fi lters at least twice a year. Filterswill require more frequent care under high load conditions or dirty air. A clogged air fi lter reducesairfl ow, cooling capacity and increases energy usage.
Permanent (cleanable), or replaceable media fi lters areacceptable for all units.
To change fi lters with replaceable media:
1. Disconnect electrical power source.
2. Loosen two screws and brackets at the rear of returnplenum.
3. Pull out the fi lter and frame from the return plenum.
4. Remove two screws from the frame.
5. Replace media in the frame.
6. Follow the opposite procedure to re-install the fi lter frame
7. Re-connect the electrical power source.
To clean permanent fi lters, remove the fi lter media andwash it in water to remove dust, dirt and lint; allow todry thoroughly before re-installing in the unit.
Change Entire Fan Board
The entire fan board can be changed by completing the following steps:
1. Turn off the electrical power source and thendisconnect the motor wires. Allow the rotating fan wheel to stop.
2. Disconnect the grounding wire.
3. Remove the return plenum, if applicable.
4. Loosen the screws fastened on the keyholes at fourcorners of the fan board.
5. Remove other screws from the upper side of the fanboard, if applicable.
6. Lift up the fan board about 14mm and then pull theentire fan board from the unit through the keyholes.
7. Follow the opposite procedures to reinstall the newfan board. Clean up debris on the coil and the inside of unit casing before installing the fan board. Also check for debris on the fan wheel before start-up.
CAUTION: Due to the dimensions and weights of the fan
board, at least two technicians is recommended to do
this step for safety.Change Fan Housing/Fan Wheel
The fan housing/fan wheel can be replaced, without removing the entire fan board from the unit, by completing the following steps:
1. Turn off the electrical power source and thendisconnect the motor wires. Allow the rotating fan wheel to stop.
2. Remove the fi lter and return plenum from the unit, if applicable.
3. Loosen the bolt, located in the center of the fanwheel, which fastens the fan wheel and motor shaft together.
4. Remove the four screws that fasten the fan housingand fan board together.
5. Pull out the fan housing about 20mm from the fan board and then remove the fan housing and wheel from the motor shaft.
6. Once the fan housing is separated from the fan boardand motor shaft, the fan wheel can then be taken out of the fan housing by the following steps.
• Remove two screws on top panel of the fan housing.
• Lift up the fl exible top panel and then remove the fanwheel out of the fan housing.
7. After replacing the fan housing or fan wheel, followthe opposite procedures to re-install.
When reassembling the fan housing, make sure the fan wheel is balanced and centered in the fan housing and not rubbing on either side. Clean up debris on the fan wheel before start-up.
UNT-SVX06H-GB 19
Change Motor
The Fan Coil will not operate properly without a functionally normal motor. If the motor fails, order a replacement from Trane. The motor should be replaced by completing the following steps:
1. Turn off the electrical power source and thendisconnect the motor wires. Allow the rotating fan wheel to stop.
2. Disconnect the grounding wire on motor shell.
3. For the motor with two fans, one of the fans must be removed fi rst before changing the motor. Follow the“Change Fan Housing/Fan Wheel” steps to remove one fan out of the unit and motor shaft.
4. Loosen the bolt, on the other fan wheel, from the motor shaft.
5. Loosen the screw and nut on two clamps which holdthe motor and motor seat
6. Open the clamps and then remove the clamps outof motor seats. Hold the motor with one hand, when removing the second clamp, to prevent the motor from dropping off.
7. Take the motor and shaft out of the fan which is still connected to the unit.
8. Follow the opposite procedures to reinstall the newmotor. After replacing the motor, make sure the fan wheel is balanced and centered in the fan housing and not rubbing on either side.
Motor oil
Bearings are sealed for life and do not require periodic lubrication.
Clean Coil
A clogged or dirty coil will reduce the cooling capacity.
Clean coil by completing the following steps:
1. Turn off the electrical power source and thendisconnect the motor wires. Allow the rotating fan wheel to stop.
2. Remove screws which fasten the top panel and unitcasing together.
3. Remove screws which fasten the top panel and outletcollar together, if applicable.
4. Lift up and remove the top panel from unit.
5. Clean coil:
• Clean coil by brushing fi ns with a stiff nylon brush.
• Then clean coil with a vacuum cleaner.
• Coil may also be cleaned by using a high pressureair hose and nozzle, if a compressed air source is available.
• Straighten any bent fi n.
6. Re-install the top panel and fasten all necessaryscrews.
7. Re-connect the electrical power source. If theclearance between the supporting structure and the top panel of unit is too small to do service, follow the procedures of “Change Entire Fan Board” to remove the fan board and then follow the clean coil procedures to clean coil from the air inlet. It should be pointed out that if the air fi lter is used and taken care of properly, the coils will not need cleaning.
Drain Pan
The drain pan should be cleaned to allow condensate fl ow. If it is clogged, steps should be taken to clear thedebris so that condensate will fl ow out easily.
Control
Controls such as thermostats, control valves, and motor speed switch may be repaired locally; repair should be supervised by the control manufacturer’s representative.
Service Parts
The replacement parts are available through Trane or local Sales Representative. When ordering parts, the service part number and description must be provided.
Maintenance contract
It is strongly recommended that you sign a maintenance contract with your local Trane Service Agency.
This contact provides regular maintenance of your installation by a specialist trained in servicing Trane equipment. Regular maintenance ensure that most malfunctions are detected and corrected in good time, and minimizes the possibility that serious damage will occur. Regular maintenance ensures the maximum operating life and effi ciency of your equipment.
Training
The equipment described in this manual is the result of many years of research and continuous development. To assist you in maintaining your equipment at peakoperating levels, Trane has operation training availablethrough the local Trane Sales Offi ce. This training couldbe provided at nominal charge. The principle aim of this is to give operators and maintenance technicians a better knowledge of the equipment they are using, or that is under their charge. For further information, contact your nearest Trane Sales Offi ce.
Maintenance
Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, comfortable and energy effi cient environments, Trane offers a broad portfolio of advanced controls and HVAC systems, comprehensive building services and parts. For more information visitwww.Trane.com
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Ingersoll-Rand International Limited - 170/175 Lakeview Drive, Airside Business Park, Swords, Co. Dublin, Ireland