Supplementary User Guide

47
7.0 Cascade
P3 DHW
N G L
Master Prestige Boiler
Slave Prestige Boiler
Slave Prestige Boiler
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
CH2
Thermostat
System
Sensor
Modulation
Signal
CH2
Thermosta
t
CH1
Thermostat
Outdoor
Sensor
DHW
Sensor or
Aquastat
Modbus
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
D
HW PUMP
C
H PUMP
POWER SUPPLY
ALARM
CH2
Thermostat
System
Sensor
Modulation
Signal
CH2
Thermosta
t
CH1
Thermostat
Outdoor
Sensor
DHW
Sensor or
Aquastat
Modbus
CH
L G N L G N L G N L G N L G N L G N L G N
F
LAME
P
UMP 4
P
UMP 3
D
HW PUMP
CH PUMP
P
OWER SUPPLY
A
LARM
CH2
Thermostat
S
ystem
S
ensor
M
odulation
S
ignal
CH2
Thermosta
t
CH1
Thermostat
O
utdoor
S
ensor
DHW
Sensor or
Aquastat
Modbus
Main Control Board Back of Display Panel
Back of Display Panel
Heating Call
From Zone Panel
Outdoor Sensor
DHW Sensor
System Sensor
C
ascade
Master
Cascade
Master
Cascade
Slave
Cascade
Slave
M
ain Control Board
Fig. 24: Reverse Return Cascade Wiring
Note: Reference Fig. 23, page 46 for cascade piping.