Honeywell MagicStat 28 Programming And Installation Instructions page 25

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
M1711B
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
JUMPER
Rc
R
FAN
L1
RELAY
(HOT)
L2
INSTALLATION
M848A