16
18-BC99D1-1D-EN
Electrical — Low Voltage Non Communicating
Table 20.
Low Voltage Maximum Wire Length
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0$; :,5( /(1*7+
$:*
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$:*
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Low Voltage Hook-up Diagrams
With TEM 3, 4, 6, 8
Thermostat
Air Handler
Outdoor
Unit
R
G
B
W1
W2
R
B
O
Y
X2
R
G
B/C
O
Y
W
Blue
24 VAC HOT
FAN
24 VAC
Common
SOV
COOL/HEAT
1st STAGE
HEATING
2nd STAGE
EMERGENCY
HEAT
Pink
Black
White
X2
O
Y*
With TAM 4, 5, 7, 9
Thermostat
Air Handler
Outdoor
Unit
R
G
B
W1
W2
R
B
O
Y
O
Y
O
X2
R
G
B/C
O
Y
l
W
Blue
O
Y
l
24 VAC HOT
FAN
24 VAC
Common
SOV
COOL/HEAT
1st STAGE
HEATING
2nd STAGE
EMERGENCY
HEAT
Pink
Black
White
X2
•
Units with pigtails require wirenuts for connections.
•
In AC systems for multiple stages of electric heat, jumper W1 and W2 together if comfort control has only one stage of heat.
* Y2 for TEM6
