Honeywell MiniZone EMM-3U Product Data page 5

R
C
24VAC
40VA
3
R C W1/E Y1 G W2Y2 O/B L M6M4M1
2
EMM-3U THERMOSTAT
CONNECTORS
G
C
1
R
W
Y
TYPICAL SINGLE STAGE
THERMOSTAT WIRING
COMMON (C) TERMINAL IS USED ONLY BY THERMOSTATS
1
THAT REQUIRE A COMMON WIRE.
2
MULI-STAGE THERMOSTATS ARE WIRED SIMILARLY BUT WITH
Y2 AND W2 USED FOR SECOND STAGE COOL AND HEAT.
3 LEAVE O/B JUMPER ON EMM-3U DISCONNECTED.
Fig. 3. Typical conventional thermostat wiring.
M20780A
2
R C W1/E Y1 G W2Y2
1 2 3 4
PC8900
1 W8900A/C IS RECOMMEDED FOR CONVENTIONAL AND HEAT PUMP APPLICATIONS. THE W8900B CANNOT
SWITCH THE PANEL TO EMERGENCY HEAT.
2
LEAVE O/B JUMPER ON EMM-3U DISCONNECTED.
Fig. 4. PC89800 with W8900A,C Thermostat wiring.
5
EMM-3U UNIVERSAL ELECTRONIC MINIZONE™ PANEL
R
C
24VAC
40VA
O/B L M6M4M1
EMM-3U THERMOSTAT
CONNECTORS
CO
2
1
2
3
4
GND
C
R
RH
RC
HUM
24 VAC
HUM
VNT
120 VAC
VNT
W8900A,C
S1
S
T1
T
OUT
OUT
LED
G
Y2
Y1
W1
W2
1
M20781A
68-0237-2