5-WIRE HEAT/COOL (JUMPER REMOVED)
A
B
HEATING
RELAY OR
VALVE COIL
COOLING
CONTACTOR
1
COIL
L1
(HOT)
L2
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
C
D
W
Y
G
Rc
R
FAN
RELAY
1
L1
(HOT)
L2
M1711A
3-WIRE COOL-ONLY (JUMPER INTACT)
COOLING
CONTACTOR
COIL
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
23
A
C
B
D
W
Y
G
Rc
R
FAN
L1
RELAY
(HOT)
L2
INSTALLATION
JUMPER
M 848