6
+24V DC
OAD
24V
AC
Equipment Ground
valves
2 position
terminal on
to close
Eliminate wire
return valve
modulating spring
Optional 24V
AC for
HIGH
LOW
MED
sensor
speed control from a
T57
Add these wires for manual
T56
or T57
sensor
from a
Setpoint adjustment
Add this wire for
CHG
SPT
BLK
M BLU
L R
E
D
H BLK
WHT
V
alve
24V
AC
DX2
V
alve
T
ransformer Ground
Fan Relays
Fan Motor
V
oltage
Line
V
oltage
Line
M
SA
T
ON
FA
N
HEA
T2
HEA
T1
COM
CONDSW
RMT/FS
CNGOVR
T56
SA
T
SPT
IAQ
SPEED
+10V
GND
GND
GND
GND
GND
RH
Damper
Air
Fresh
HIGH
MED
LOW
F
A
N AC
B
W
R
-
B
GND
W
+
R
24 V
A
C
DX1
V
alve
communications
CCN
Not Used
communications
CCN
C
O
M
C
L
O
P
24
V
J1
1
2
3
Fig
. 5 —
Fa
n Coil Contr
o
lle
r Wiring
— Two-Pipe
, Thr
ee-
Spee
d Fan
wit
h
Opt
ional Man
u
al Speed
Con
tro
l Applic
at
io
ns
→
1001
