System information

14 18-BC53D2-6
Note:
1. * For multiple stages of electric heat, jumper W1, W2, and W3 together if comfort control has only one stage of heat.
2. YI and YO connections must be made as shown for freeze protection and internally mounted condensate overflow circuits to
work properly.
3. If a 3rd party condensate overflow switch is installed, it should be wired in series between YO and Y to the outdoor unit.
4. Air conditioner models do not use the Black (X2) or Orange wires from the outdoor unit.
5. For non-communicating applications, use 24 volt harness accessory BAYACHP024A.
Comfort Control
TAM7 Air Handler
Air Conditioner
or Heat Pump -
Note 4
Note 5
Neatly bundle all low voltage
wires behind the service
valve cover as shown.
Yellow/Red
Field wiring
Yellow
Blue
Black
(X2)
Red
Orange
Red
Yellow
Orange
Green
White
Blue
B
B - Blue
W
X2
G
Y1
Brown
Y2
Y1 - Yellow
Y2 - Brown
R
O
O
R
B
YI
W1
YO
Y2
BK
G
W2
W3 *
R - Red
O - Orange
(In)
(Out)
W1 - White
TAM7 Air Handler
with 24 Volt Control
Hook-up Diagram
24 Volt
1
1
12345
12345
HP
2(Compressor)
2(Stages)
AC (System)
}
OUTDOOR
Capacity (Tons)
OUTDOOR
}
Torque
CFM/Ton
Cool OffDelay
}
INDOOR
CFM
+12V
R13
R14
R1
R4
1
U1
RNET 1
S1
on
on
S2
RNET 2
R
6
C22
C19
C
15
C
12
C18
C21
C10
D9
L1
R22
Must configure to “OFF” for heat pump.
Must configure to “ON” for 20 SEER (2 stages)
Must configure to “ON” for 20 SEER
(2 compressors)
TAM7 Air Handler with 24 Volt Control
Hook-up Diagram (Continued)
Control
Board