Sr501-Exp/Pc700 Boiler Reset Control Connected To Tankless Coil Boiler - Taco SR501 Wiring Manual

SR501-EXP and PC700 Boiler Reset Control Connected to an Existing
OUTDOOR
SENSOR
PC700
ZONE
BOIL OUT
CONTROL
SEN SEN
BOILER SENSOR
TO: "ZR" ON BOILER CONTROL
TO: "ZC" ON BOILER CONTROL
BOILER
Boiler and Zone Control(s) need to be on same power supply (same circuit breaker).
SR501-EXP and PC700 Boiler Reset Control Connected to an Existing
OUTDOOR
SENSOR
MASTER
PC700
ZONE
BOIL OUT
CONTROL
SEN SEN
FUSE
1 AMP
BOILER SENSOR
TO: "ZR" ON BOILER CONTROL
TO: "ZC" ON BOILER CONTROL
BOILER
Boiler and Zone Control(s) need to be on same power supply (same circuit breaker).
20
Tankless Coil Boiler – Zoning with Circulators
POWER
CONTROLS
END
EXPANSION THERMOSTAT
SWITCH OVERRIDE
X X 1 2 3 4
T/R T/W COM
K1-A
MASTER
SR 501-EXP
FUSE
1 AMP
SLAVE
K1
FUSE
5 AMP
K1-B
N H ZC ZR
POWER 120VAC 120VAC
INPUT INPUT OUTPUT OUTPUT
JUMPER
Tankless Coil Boiler – Zoning with Zone Valves
POWER
CONTROLS
MODE
END RESET
EXPANSION THERMOSTAT
SWITCH OVERRIDE RESET
X X 1 2 3 4 1 2
T/R T/W COM
K1-A
MASTER
SR 501-EXP
NORMAL
SLAVE
K1 K2
FUSE
5 AMP
K1-B K2-A K2-A
N H ZC ZR H H
POWER 120VAC 120VAC CIRC PRIORITY
INPUT
INPUT OUTPUT OUTPUT OUTPUT
JUMPER
EXISTING
ZONE
CONTROL
MODE
RESET
RESET
1 2
NORMAL
POWER
K2
T STAT
K2-A K2-A
H H
CIRC PRIORITY
OUTPUT
PRIMARY
SYSTEM
CIRCULATOR
(Optional)
WHITE
EXISTING
120 VAC
24
INPUT VAC
ZONE
BLACK
CONTROL
NORMAL RESET
POWER IN
POWER
T STAT
MAIN EXTRA N/O COM N/C
END END
SWITCH SWITCH
PRIMARY
SYSTEM
CIRCULATOR
(Optional)
T
SR 504
ZONE1 ZONE2 ZONE3 ZONE4
FOUR ZONE SWITCHING RELAY
WITH OPTIONAL PRIORITY
120V RELAY
X X
ZONE1 ZONE2 ZONE3 ZONE4
ZC ZR
END
120 VOLT CIRCULATORS
SWITCH
FUSE 1 AMP
REMOVE
JUMPER
THERMOSTATS
T T
24 VAC
MODE
T T T T
ZONE 1 ZONE 2 ZONE 3
ZVC 404
FOUR ZONE ZONE VALVE CONTROL
WITH OPTIONAL PRIORITY
ZONE 1 ZONE 2 ZONE 3
ZONE 4 RELAY
1 2 3 4 1 2 3 4 1 2 3 4
JUMPER
3 & 4
1
MOTOR
2
3
2 WIRE ZONE VALVE TACO 4 WIRE ZONE VALVE
(NO END SWITCH) 3 WIRE ZONE VALVE (POWER OPEN,
SELF CLOSING)
ZONE VALVE SYSTEM
CIRCULATOR
THERMOSTATS
ZONE 4
PRIORITY
ON
OFF
POWER
ZONE 1
ZONE 2
ZONE 3
ZONE 4
POWER
INPUT
120 VAC
INPUT
H
N
T
SLAVE
ZONE 4
PRIORITY
OFF
T T T T ON
T STAT 1
ZONE 4
VALVE 1
T STAT 2
VALVE 2
T STAT 3
VALVE 3
T STAT 4
VALVE 4
POWER
ZONE 4
1 2 3 4
JUMPER
3 & 4
SEE NOTE
PRIORITY
ZONE
END
SWITCH
Note: When a circulator is used on the
priority zone instead of a zone valve,
jumper 3 and 4 of the priority zone.
H
120 VAC
INPUT
N