2. Trane
  3. 7 Series

Trane 7 Series Installer's Manual Addendum

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  • What type of thermostat is needed for Heat Pump systems?
    Does wiring vary between the two types of systems (Air Conditioner & Heat Pump)?
    What is the purpose of the hydronic control?
    What relay is needed for Family 7 air handlers, in cooling-only applications?
    What is the function of the SPDT relay?
    Is the hydronic coil designed for emergency heat?
    What profile is recommended for the blower delay?
    What color wires are connected to terminals W1 and O?
Page 1
INSTALLER'S GUIDE ADDENDUM
Field wiring
Yellow
Blue
SPDT Relay
w/24 VAC Coil
NO
NC
Red
Yellow
Orange
Blue
B
W
G
Y1
Y2
Y1
R
O
O
O
R
B
B
YI
W1
YO
YO
Y2
BK
G
W2
W3
(In)
(Out)
Green
Comfort Control *
Series 7 Air Handler
Air Conditioner
Single Stage Cooling
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
Notes:
* Heat Pump thermostat is required. Must be set in Heat Pump configuration.
1. It is recommend to use the enhanced mode blower delay profile. See the
Installer’s Guide for S2-3 and S2-4 settings.
2. Wiring must be made as shown for proper operation.
Shown in de-energized position
Hydronic
Control
Typical Boiler
Wiring
B
T
T
Comfort Control
Heat Pump
Series 7 Air Handler
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
Field wiring
Yellow
Blue
Black
(X2)
Red
Orange
Red
Yellow
Orange
Green
White
Blue
B
Y2
B - Blue
W
X2
G
Y1
Y1 - Yellow
R
O
O
R
B
YI
Y2
W1
YO
BK
G
W2
W3
R - Red
O - Orange
(In)
(Out)
W1 - White
Single Stage Heat Pump
Notes:
1. Emergency heat mode only delivers 50% airflow.
2. Hydronic heat is designed for supplemental heat during
compressor operation.
3. It is recommend to use the enhanced mode blower delay
profile. See the Installer’s Guide for S2-3 and S2-4 settings.
4. Wiring must be made as shown for proper operation.
Hydronic
Control
Typical Boiler
Wiring
B
W
T
T
Field Wiring Diagrams for Hydronic Coil with Series 7 Air Handlers
18-GJ21D1-1A_Addendum
Notes:
1. For Family 7 air handlers, a relay and Heat Pump thermostat are required for cooling only application. For Heat Pump OD applications the relay is not required.
2. For Heat Pump systems, the hydronic coil is designed for Supplemental Heat. It is not designed for Emergency Heat.
Page 2
INSTALLER'S GUIDE ADDENDUM
Comfort Control *
Series 7 Air Handler
Air Conditioner
Two Stage Cooling
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
Field wiring
Yellow/Black
Blue
Red
Yellow
Green
Brown
Orange
Blue
B
W
G
Y1
Y2
R
O
O
R
B
YI
W1
YO
Y2
BK
G
W2
W3
(In)
SPDT Relay
w/24 VAC Coil
NO
NC
Y1
O
B
YO
(Out)
Shown in de-energized position
Yellow
/Red
Brown
Notes:
* Heat Pump thermostat is required. Must be set in Heat Pump configuration.
1. It is recommend to use the enhanced mode blower delay profile. See the
Installer’s Guide for S2-3 and S2-4 settings.
2. Wiring must be made as shown for proper operation.
Hydronic
Control
Typical Boiler
Wiring
B
T
T
Comfort Control
Heat Pump
Series 7 Air Handler
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
Field wiring
Yellow
Yellow/Red
Blue
Black
(X2)
Red
Orange
Red
Yellow
Brown
Orange
Green
White
Blue
B
Y2
B - Blue
W
X2
G
Y1
Y1 - Yellow
Y2 - Brown
R
O
O
R
B
YI
Y2
W1
YO
BK
G
W2
W3
R - Red
O - Orange
(In)
(Out)
W1 - White
Two Stage Heat Pump
Notes:
1. Emergency heat mode only delivers 50% airflow.
2. Hydronic heat is designed for supplemental heat during
compressor operation.
3. It is recommend to use the enhanced mode blower delay
profile. See the Installer’s Guide for S2-3 and S2-4 settings.
4. Wiring must be made as shown for proper operation.
Hydronic
Control
Typical Boiler
Wiring
B
W
T
T
/