Honeywell MiniZone EMM-3U Product Data page 9

Single Transformer
Heating/Cooling
systems require a
jumper to be installed
R
connecting R and R
H C
JUMPER
(factory installed).
24 Volt Equipment
EQUIPMENT
Transformer(s)
Cooling Transformer
Heating Transformer
First Stage Heat Relay
Second Stage Heat Relay
First Stage Cool Relay
Second Stage Cool Relay
Fan Relay
This diagram shows the typical
two-stage equipment, thermostat,
and damper motor connections.
For specific wiring for other
thermostats, damper motors, and
HVAC Equipment, refer to the
Installation Instructions.
L1
TRANSFORMER
(HOT)
COOLING
L2
CONTACTOR
HEAT
RELAY
FAN
RELAY
1 LEAVE FACTORY INSTALLED R
FOR SINGLE TRANSFORMER SYSTEM.
Fig. 14. Conventional single-stage single transformer
system wiring diagram.
HEAT COOL PURGE
LED STATES:
RED HEAT LED
GREEN COOL LED
/R
C H
YELLOW PURGE LED
GREEN FAN LED
RED EM HEAT LED
FLASHING RED HEAT LED
FLASHING GREEN COOL LED
FLASHING YELLOW PURGE LED NO ZMS SENSOR INSTALLED OR ZMS SENSOR FAILURE
ZONE LEDS
R
C
ON (GREEN COLOR)
R
OFF (NO COLOR)
H
W
1
MOMENTARY PUSHBUTTON SWITCHES:
W
2
BOOT USED TO CLEAR THE SYSTEM AND MICROPROCESSOR.
E
PURGE OVERRIDE USED TO BYPASS THE PURGE CYCLE WHILE TROUBLESHOOTING.
B
DIP SWITCH SETTINGS
O
1 STAGE TIMER
SEE
Y
2 STAGE TIMER
1
TABLE
3 STAGE TIMER
Y
2
4 SYSTEM TYPE
G
5 ZMS HIGH LIMIT
6 ZMS LOW LIMIT
7 HEAT FAN
8 PURGE FAN
9 PURGE DAMPER
10 PURGE TIME
11 EM HEAT FAN
12 2ND STAGE EM HEAT
ZONE 1
2
R C W1/E Y1 G W2Y2 O/B L M6M4M1
1 2
R C W1 Y1 G W2Y2
Zone 1 Thermostat
4 5 6 Z
1 2 3 X
Power-open
Power-closed
(Opposed Blade
Damper Motors)
Fig. 13. EMM-3U System wiring diagram.
PANEL
1
R
C
R
H
W
1
W
2
E
B
O
Y
1
Y
2
G
TO R JUMPER IN PLACE
H C
M14766A
EMM-3U UNIVERSAL ELECTRONIC MINIZONE™ PANEL
FAN EM. HEAT ZONE 1 ZONE 2
HEATING MODE
COOLING MODE
PURGE MODE
FAN MODE
EM HEAT MODE
ZMS SENSOR EXCEEDS HIGH LIMIT IN HEATING
ZMS SENSOR EXCEEDS LOW LIMIT IN COOLING
DAMPER IS OPEN OR OPENING
DAMPER IS CLOSED OR CLOSING
O
N
ON OFF 1 2 3 4 5 6 7 8 9 101112
1 0 TABLE
CONV HEAT PUMP #1 #2 #3
160 F 120 F 1 1 1
40 F 48 F 1 1 0
HVAC PANEL 1 0 1
HVAC PANEL 1 0 0
NO CHG OPEN 0 1 1
2.0 MIN 3.5 MIN 0 1 0
HVAC PANEL 0 0 1
YES NO 0 0 0
ZONE 2
2
R C W1/E Y1 G W2Y2 O/B L M6M4M1
1 2
R C W1 Y1 G W2Y2
Zone 2 Thermostat
Power-closed
Spring-open
(Model ZD)
L1
(HOT)
L2
L1
(HOT)
L2
REMOVE FACTORY INSTALLED R
1
Fig. 15. EMM-3U oil heating wiring diagram.
9
ZONE 3
ON
BOOT PURGE
OVERRIDE
EM
HEAT
OFF
DATS
DATS
TIME
5 MIN
ZONE PANEL
10 MIN
TRANSFORMER
15 MIN
20 MIN
R
30 MIN
45 MIN
C
60 MIN
NO TIMER 24V AC
40VA
ZONE 3
2
R C W1/E Y1 G W2Y2 O/B L M6M4M1
1 2
ZONE
THERMOSTATS
1 C terminal
R C W1 Y1 G W2Y2
Zone 3 Thermostat
2 Leave jumper
ZONE DAMPER MOTORS
Power-closed
M1 - common
Spring-open
M4 - power open
(Model ARD)
M6 - power closed
OIL PRIMARY
T T
COOLING
CONTACTOR
24V
FAN
RELAY
TO R
H C
Discharge Air
Temperature
Sensor
(See C7735
Installation
Instructions
for further
information.)
C R
24 Volt 40VA
Transformer
connection is not
required on battery
powered, power
stealing, or some
electromechanical
thermostats.
disconnected for
conventional
thermostats.
M14763A
PANEL
1
R
C
R
H
W
1
W
2
E
B
O
Y
1
Y
2
G
JUMPER.
M14764A
68-0237-2