Fa
ct
or
y
In
st
al
le
d
Tr
an
sf
or
m
er
Fa
ct
or
y
In
st
al
le
d
Tr
an
sf
or
m
er
DHW
Low Voltage Connections
CH
L G N
L G N
L G N
L G N
L G N
L G N
L G N
FLAME
PUMP 4
PUMP 3
DHW PUMP
CH PUMP
POWER SUPPLY
ALARM
Zone 2
Thermostat
Zone 1
Thermostat
O
ut
do
or
S
en
so
r
Line Voltage Connections
Reset Limit
Connections
68
Manual
Auto
120V/15A
Service
FOUR ZONE ZONE VALVE CONTROL WITH OPTIONAL PRIORITY
1
2
3
4
ZONE 1
1
2
3
4
ZONE 2
1
2
3
4
ZONE 3
1
2
3
4
ZONE 4
ZONE 1
T
T
ZONE 2
T
T
ZONE 3
T
T
ZONE 4
T
T
PO
W
ER
IN
1
2
3
4
ZONE 4 RELAY
N/O
N/C
COM
PUMP
ENDSW
B
BOILER
ENDSW
A
MODE
RESET
NORMAL
SLAVE
MASTER
POWER
CONTROLS
FU
S
E
7
AM
P
M
AX
EXPANSION
PLUG-IN
CARDS
ON
OFF
ZONE 4
PRIORITY
68
68
Zone 3
Thermostat
M
oto
r
1
2
3
4
En
d S
w
itc
h
Zone 1
Zone Valve
M
oto
r
1
2
3
4
En
d S
w
itc
h
Zone 2
Zone Valve
M
oto
r
1
2
3
4
En
d S
w
itc
h
Zone 3
Zone Valve
CH2
Thermostat
System
Sensor
Modulation
Signal
CH2
Thermosta
t
CH1
Thermostat
Outdoor
Sensor
DHW
Sensor or
Aquastat
Modbus
DH
W
S
en
so
r
System
Circulator
36
8.0
External Wiring
Fig. 23: Multiple Zone Field Wiring Using Zone Valves & Zone Valve Panel