Blower Motor Speed-Tap Retrofit - Trane GEHE 072-180 Installation, Operation And Maintenance Manual

Installation
Figure 60. Low-voltage connection (GEH/V 6 to 25 ton)
Deluxe Controls with
-all Heat Pump Units w/ Reheat
using X13511090010 (T8511)
1TB2
1 24 VAC (R)
FAN (G)
2
COMPRESSOR 1 (Y1)
3
4 COMPRESSOR 2 (Y2)
5 REVERSING VALVE (0) & HUMIDISTAT
24 VAC COMMON (C) & WATER ISOLATION VA
6
7 COMPRESSOR DISABLE
8 COMPRESSOR DISABLE
ALARM
9
ALARM
10
11 ELECTRIC HEAT
12 ELECTRIC HEAT
HUMIDISTAT
13
WATER ISOLATION VALVE
14
15 3RD STAGE HEAT (W3)
16 NOT USED
Deluxe Controls with
-all Heat Pump Units without Reheat
using X13511090010 (T8511)
1TB2
24 VAC (R)
1
FAN (G)
2
3 COMPRESSOR 1 (Y1) & WATER ISOLATION VA
4 COMPRESSOR 2 (Y2)
REVERSING VALVE (0) & HUMIDISTAT
5
6 24 VAC COMMON (C) & WATER ISOLATION VA
7 COMPRESSOR DISABLE
COMPRESSOR DISABLE
8
ALARM
9
10 ALARM
11 ELECTRIC HEAT
ELECTRIC HEAT
12
13 HUMIDISTAT
14 NOT USED
3RD STAGE HEAT (W3)
15
NOT USED
16
Low-voltage connection diagrams for deluxe 24V control
packages for these thermostats mounted on 6-25 ton
equipment sizes are shown in
For controls using DC analog input/outputs, see
appropriate installation, operation and diagnostic
manuals for connection, CNT-SVX11*-EN (ZN524). For
installation, operation and Programming see BAS-
SVX065*-EN (UC400).

Blower Motor Speed-Tap Retrofit

Note: For GEH/V .5 to 5 ton units only.
Motors installed in the unit include 4-speed or 3-speed
configurations. All voltages include a 4-speed
configuration, with the exception of 380V, 415V, 460V
which contain a 3-speed arrangement and 575V which
contains a 2-speed arrangement.To modify the rpm of the
motor, the following steps must be followed.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury. Disconnect all electric
power, including remote disconnects before servicing.
Follow proper lockout/tagout procedures to ensure the
power can not be inadvertently energized.
60
Deluxe Controls with
-all Heat Pump Units w/ Reheat
using X13511091010/X13511092010 (T7300)
1TB2
1 24 VAC (R)
FAN (G)
2
COMPRESSOR 1 (Y1)
3
4 COMPRESSOR 2 (Y2)
5 REVERSING VALVE (0) & HUMIDISTAT
24 VAC COMMON (X) & WATER ISOLATION VA
6
7 COMPRESSOR DISABLE
8 COMPRESSOR DISABLE
ALARM
9
ALARM
10
11 ELECTRIC HEAT
12 ELECTRIC HEAT
HUMIDISTAT
13
WATER ISOLATION VALVE
14
15 3RD STAGE HEAT (W1)
16 NOT USED
Deluxe Controls with
-all Heat Pump Units without Reheat
using X13511091010/X13511092010 (T7300)
1TB2
24 VAC (R)
1
FAN (G)
2
3 COMPRESSOR 1 (Y1) & WATER ISOLATION VA
4 COMPRESSOR 2 (Y2)
REVERSING VALVE (0) & HUMIDISTAT
5
6 24 VAC COMMON (X) & WATER ISOLATION VA
7 COMPRESSOR DISABLE
COMPRESSOR DISABLE
8
ALARM
9
10 ALARM
11 ELECTRIC HEAT
ELECTRIC HEAT
12
13 HUMIDISTAT
14 NOT USED
3RD STAGE HEAT (W1)
15
NOT USED
16
Figure 60, p. 60.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
1. Remove service access panel at the unit front.
Figure 61. Service access panel
2. Find the blower motor relay.The relay is located in
Figure 62, p. 60.The relay location is consistent in all
control configurations.
Figure 62. Relay location
Removing Speed-tap Wire
3. For units w/o Hot Gas Reheat: Remove undesired
speed-tap wire from 1K4 relay at spade 3. Wire tie the
lead, to eliminate a short.
4. For units with Hot Gas Reheat: Remove undesired
speed-tap wire from 1K8 relay at spade 6. Wire tie the
lead, to eliminate a short. Hot Gas Reheat requires both
speed taps to be adjusted to enable reheat as the lower
speed tap.
WSHP-SVX01Q-EN