Trane 5TEM6B02AV21SA - External Switches and Accessories

18
18-GF79D1-1A-EN
1. Units with pigtails require wirenuts for connections.
2. Cap all unused wires.
3. When BK is used, do not connect Y2 at the air handler.
4. When BK is used, cut the jumper between R and BK on the control board. See wiring schematic for details.
Y0
YL/BLK
Y0
YL/BLK
5. In AC systems for multiple stages of electric heat, jumper W1 and W2 together if comfort control has only one stage of heat.
2 Stage, 2 Step, Cooling Only
Thermostat Air Handler
Outdoor
R
G
B
W1
W2
B
Y1
R
G
B
Y1
W1
Blue
24 VAC HOT
FAN
24 VAC
Common
COOLING
1st STAGE
COOLING
2nd STAGE
HEATING
1st STAGE
HEATING
2nd STAGE
White
White
W2
O
Y1
Y2
BK
Y2
Y2
WH/BLK
2 Stage, 2 Step, HP
Thermostat Air Handler
Outdoor
R
G
B
W1
W2
R
B
O
Y1
X2
R
G
B
O
Y1
W1
Blue
24 VAC HOT
FAN
24 VAC
Common
SOV
COOL/HEAT
1st STAGE
COOL/HEAT
2ns STAGE
White
Black
White
W2
O
Y1
Y2
BK
Optional
Y2Y2
WH/BLK
AUX/EMERGENCY
HEAT 1st STAGE
AUX/EMERGENCY
HEAT 2nd STAGE
(3)
(3)
(5)
External Switches and
Accessories
The following optional connections are available on the
mitigation control board (see hook-up diagrams Figure
5, p. 19):
• ACC1 and ACC2 accessory connections. Use when
connecting an accessory to the air handler that
could be considered a source of ignition (ex.
electronic air cleaner).
• SWa/SWb external switch connections. Use when
connecting a smoke detector to the air handler.
NNoottee:: SWa/SWb may only be used when
configuring a smoke detector. Other external
switches may not be used.
• Aoa/Aob audible alarm connections. Use when
configuring an audible alarm on the refrigerant
detection system of the air handler.
ACC1, ACC2, and Aoa/Aob are dry contacts and need
source voltage provided from either the accessory or
the unit's control wiring. SWa/SWb connections do
have 24 volts AC source voltage and are to be
connected to normally closed (NC) contacts on the
smoke detector.
Connect using field-supplied 3/16" (Aoa/Aob, SWa/
SWb) or 1/4" (ACC1, ACC2) female spade connections.
Refer to the “Field Wiring Diagrams,” p. 17.
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