19
See appendix for listing of additional components.
Quick Reference Boiler Piping and Wiring Guide
CH
PUMP
CH2
Thermostat
System
Sensor
Modulatio
n Signal
CH2
Thermost
at
CH1
Thermostat
Outdoor
Sensor
DHW
Sensor or
Aquastat
Modbus
CH2
Thermostat
System
Sensor
Modulatio
n Signal
CH2
Thermost
at
CH1
Thermostat
Outdoor
Sensor
DHW
Sensor or
Aquastat
Modbus
CH2
Thermostat
System
Sensor
Modulatio
n Signal
CH2
Thermost
at
CH1
Thermostat
Outdoor
Sensor
DHW
Sensor or
Aquastat
Modbus
Main Control
Board
B-2
Back of Display
Panel
B-2
Back of Display
Panel
B-3
Relay
End switch
Optional
Outdoor
Sensor
DHW
Sensor
System Sensor
Main Control
Board
B-1
N
G
L
N
G
L
N
G
L
N
G
FLAME
SUPPLY
CH PUMP
DHW PUMP
L
N
G
L
N
G
L
N
G
L
N
G
FLAME
SUPPLY
CH PUMP
DHW PUMP
L
N
G
L
N
G
L
N
G
L
N
G
FLAME
SUPPLY
CH PUMP
DHW PUMP
L
Leader Boiler B-1
Follower Boiler B-2
Follower Boiler B-3
LINE
POWER
120V
LINE
POWER
120V
LINE
POWER
120V
CH
PUMP
CH
PUMP
DHW
PUMP
WIRING
3 EXALT BOILERS CASCADED
* COMMUNICATION CABLE
PART# GACAB01
*COMMUNICATION CABLE
PART# GACAB01
Relay
End Switch
19
See appendix for listing of additional components.
WIRING
CH
Pump
CH
Pump
CH
Pump
DHW
Pump
DHW
Sensor
or
Aquastat
System
Sensor
FOUR ZONE SWITCHING RELAY
SR 504-4
24 VAC
COM
24 VAC
COM
LED
INDICATO RS
POWER
ZONE 1
ZONE 2
ZONE 3
ZONE 4
LED
INDICATO RS
POWER
ZONE 1
ZONE 2
ZONE 3
ZONE 4
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
ZONE 4
PRIORITY
OFF
ON
OFF
ON
ZONE 4
PRIORITY
OFF
ON
W
W
RR
ZONE 1
ZONE 1
W
R
ZONE 1
W
W
RR
ZONE 2
ZONE 2
W
R
ZONE 2
W
W
RR
ZONE 3
ZONE 3
W
R
ZONE 3
W
W
RR
ZONE 4
ZONE 4
W
R
ZONE 4
PRIORITY
PRIORITY
THERMOSTATS (24 VAC)
THERMOSTATS (24 VAC)
XX
XX
ISOLATED
EN D
SW IT CH
ISOLATED
EN D
SW IT CH
X
X
ISOLATED
EN D
SW IT CH
W
R
ZONE 1
W
R
ZONE 2
W
R
ZONE 3
W
R
ZONE 4
PRIORITY
THERMOSTATS (24 VAC)
X
X
ISOLATED
EN D
SW IT CH
ZONE 4
PRIORITY
OFF
ON
W
R
ZONE 1
W
R
ZONE 2
W
R
ZONE 3
W
R
ZONE 4
PRIORITY
THERMOSTATS (24 VAC)
X
X
ISOLATED
EN D
SW IT CH
120 VAC CIRCULATORS
120 VAC CIRCULATORS
INPUT
120 VAC
INPUT
120 VAC
INPUT
120 VAC
HH
NN
INPUT
120 VAC
H
N
HH
NN
ZONE 4
ZONE 4
PRIORITY
PRIORITY
H
N
ZONE 4
PRIORITY
HH
NN
ZONE 3
ZONE 3
H
N
ZONE 3
ZONE 2
ZONE 2
HH
NN
ZONE 2
H
N
ZONE 1
ZONE 1
HH
NN
ZONE 1
H
N
120 VAC
120 VAC
ZC
ZC
ZR
ZR
HH
HH
120 VAC
ZC
ZR
H
H
120 VAC CIRCULATORS
INPUT
120 VAC
H
N
H
N
ZONE 4
PRIORITY
H
N
ZONE 3
ZONE 2
H
N
ZONE 1
H
N
120 VAC
ZC
ZR
H
H
120 VAC CIRCULATORS
INPUT
120 VAC
H
N
H
N
ZONE 4
PRIORITY
H
N
ZONE 3
ZONE 2
H
N
ZONE 1
H
N
120 VAC
ZC
ZR
H
H
FOUR ZONE SWITCHING RELAY
SR 504-4
24 VAC
COM
LED
INDICATO RS
POWER
ZONE 1
ZONE 2
ZONE 3
ZONE 4
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
FU SE
6 AMP
ZONE 4
PRIORITY
OFF
ON
W
R
ZONE 1
W
R
ZONE 2
W
R
ZONE 3
W
R
ZONE 4
PRIORITY
THERMOSTATS (24 VAC)
X
X
ISOLATED
EN D
SW IT CH
120 VAC CIRCULATORS
INPUT
120 VAC
H
N
H
N
ZONE 4
PRIORITY
H
N
ZONE 3
ZONE 2
H
N
ZONE 1
H
N
120 VAC
ZC
ZR
H
H
Leader
B1
Follower
B2
Follower
B3
PIPING
3 EXALT BOILERS CASCADED
* Pump Setting Changes Needed With This Configuration
* (ON)
* Pump Settings Need To Be Changed On All Boilers
d
F ll
F ll
Note: Communication Cable Needed For Each Slave Boiler
* COMMUNICATION CABLE NEEDED FOR EVERY FOLLOWER BOILER
