Honeywell MiniZone EMM-3U Product Data page 10

EMM-3U UNIVERSAL ELECTRONIC MINIZONE™ PANEL
HEATING
L1
TRANSFORMER
(HOT)
L2
COOLING
L1
TRANSFORMER
(HOT)
COOLING
L2
CONTACTOR
REMOVE FACTORY INSTALLED R
1
Fig. 16. Two-transformer system wiring diagram.
L1
TRANSFORMER
(HOT)
SECOND STAGE
L2
HEAT RELAY
EM HEAT
RELAY
COOLING
CHANGE OVER
VALVE
FIRST STAGE
COMPRESSOR
RELAY
FAN
RELAY
LEAVE FACTORY INSTALLED R
1
Fig. 17. Single-stage heat pump with separate auxiliary
and emergency heat wiring diagram.
68-0237-2
PANEL
1
R
C
R
H
W
HEAT 1
W
RELAY
2
E
B
O
Y
1
Y
2
G
FAN
RELAY
TO R JUMPER.
H C
M14765A
PANEL
R
C
R
H
W
1
W
2
E
B
O
Y
1
Y
2
G
TO R JUMPER IN PLACE.
H C
M14767A
L1
TRANSFORMER
(HOT)
L2
LEAVE FACTORY INSTALLED R
1
Fig. 18. Single-stage heat pump with auxiliary heat wiring
1
10
PANEL
R
R
W
SECOND STAGE
W
HEAT RELAY
E
B
COOLING
O
CHANGE OVER
Y
VALVE
Y
G
FIRST STAGE
COMPRESSOR
RELAY
FAN
RELAY
TO R JUMPER IN PLACE.
H C
diagram.
1
C
H
1
2
1
2
M14767A