Taco SR501, Wiring Manual

Page: 33 / 104

24 V
A
C
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
ZONE 6
MODE
NORMAL
RESET
FUSE (7 AMP MAX)
TT
TT
TT
TT
TT
TT
ZONE 6 PRIORITY
OFF ON
ZVC 406
12
34
12
34
12
34
12
34
12
34
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 5
2 WIRE ZONE V
A
LV
E
(NO END SWITCH)
JUMPER
3 & 4
T
ACO
3 WIRE
ZONE
V
A
L
V
E
1 2 3
MOTOR
END
SWITCH
THERMOSTAT
THERMOSTAT
THERMOSTAT
4 WIRE ZONE VALVE
(POWER OPEN, SELF CLOSING)
T STAT 1 VALVE 1 T STAT 2 VALVE 2 T STAT 3 VALVE 3 T STAT 4 VALVE 4 T STAT 5 VALVE 5 T STAT 6 VALVE 6 POWER
SIX ZONE ZONE VALVE CONTROL
WITH OPTIONAL PRIORITY
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT WHITE BLACK
POWER IN
24 VAC
FACTORY
INSTALLED
TRANSFORMER
120 VAC
INPUT WHITE BLACK
N/O
COM
ZONE 6 RELAY
END
SWITCH
EXTRA
END
SWITCH
MAIN
N/C
12
34
ZONE 6
PRIORITY
ZONE
JUMPER 3 & 4
SEE NOTE
TO BOILER AQUASTAT RELAY
BOILER
H N
DHW
PUMP
Note: When a circulator is used on the priority zone instead of a zone valve, jumper 3 and 4 of the priority zone.
A
AQUASTAT ON
DHW HEATER
BOILER TURNS ON WHEN ANY ZONE VALVE OPENS. DHW PUMP TURNS ON
ONLY
WHEN PRIORITY ZONE CALLS.
TT
T
31
ZV
C
404/4
06
with Domestic Hot W
ater (D
H
W) P
ump