Installation Guide

SR501-OR-4 – One Zone Switching Relay with Outdoor Reset
ONE ZONE INSTALLATION
W/O INDIRECT DHW
O
NE ZONE
S
WITCHING RELAY
WITH OUTDOOR RESET
SR 501-OR-4
LED
INDICATORS
POWER
T
STAT
DHW
OVERRIDE
BOILER
RELAY
NH
INPUT
120 VAC
ZONE 1
120 VAC
NH
6
AMP
X
R
BOILER TSTAT
W
CR
W
DHW
OUTDOOR
SENSOR
SUPPLY
S
ENSOR
X
DESIGN OUTDOOR
TEMPERATURE
FOR 180°F SUPPLY
TEMPERATURE
OFF
-
30
-20
0
-10 10
20
40
3
0
ON
SW1
OFF
S
YSTEM
C
IRCULATOR
N
H
P
OWER
INPUT
(120 VAC)
2
4 VAC
THERMOSTAT
B
OILER
CONTROL
OUTDOOR
SENSOR
BOILER
SUPPLY
SENSOR
POT1
ZONE VALVE INSTALLATION
W/O ZONE CONTROL, W/O INDIRECT DHW
ONE ZONE
SWITCHING RELAY
WITH OUTDOOR RESET
SR 501-OR-4
LED
INDICATORS
POWER
TSTAT
DHW
OVERRIDE
BOILER
RELAY
NH
INPUT
120 VAC
ZONE 1
120 VAC
NH
6
AMP
X
R
BOILER TSTAT
W
C
R
W
DHW
OUTDOOR
SENSOR
SUPPLY
SENSOR
X
DESIGN OUTDOOR
TEMPERATURE
FOR 180°F SUPPLY
TEMPERATURE
O
FF
-30
-20
0
-
10 10
20
4
0
30
ON
SW1
OFF
ZONE VALVE
CIRCULATOR
N
H
POWER
INPUT
(
120 VAC)
BOILER
CONTROL
OUTDOOR
SENSOR
BOILER
SUPPLY
SENSOR
POT1
Z
ONE VALVE
END SWITCH(S)
THERMOSTATS
(24VAC)
TRANSFORMER
24 VAC
120 VAC
INPUT
MULTI-ZONE INSTALLATION
WITH ZONE CONTROL, W/O INDIRECT DHW
ONE ZONE
SWITCHING RELAY
WITH OUTDOOR RESET
SR 501-OR-4
LED
INDICATORS
POWER
TSTAT
DHW
OVERRIDE
BOILER
RELAY
NH
INPUT
120 VAC
ZONE 1
120 VAC
NH
6
AMP
X
R
BOILER TSTAT
W
CR
W
DHW
OUTDOOR
SENSOR
SUPPLY
SENSOR
X
DESIGN OUTDOOR
TEMPERATURE
FOR 180°F SUPPLY
TEMPERATURE
OFF
-30
-20
0
-10 10
20
40
30
ON
SW1
OFF
ZONE VALVE
CIRCULATOR
N
H
POWER
INPUT
(120 VAC)
BOILER
CONTROL
OUTDOOR
SENSOR
BOILER
SUPPLY
SENSOR
POT1
1234
ZONE 1
1234
ZONE 2
1234
ZONE 3
EXISTING
ZONE VALVE CONTROL
POWER IN
24 VAC
N/O COM
N/C
PUMP END
S
WITCH
FUSE
5 AMP
ZONE 3 PUMP
END SWITCH
THERMOSTATS
(24VAC)
T
STAT 1
V
ALVE 1
T
STAT 2
VALVE 2
T
STAT 3
VALVE 3
P
OWER
L
ED
INDICATORS
ZONE 1 ZONE 2 ZONE 3
ISOLATED
XX
RW
RW RW
END SWITCH THERMOSTATS
PRIORITY
24 VAC ZONE VALVES
PRIORITY
XX
ZONE 3
P
RIORITY
OFF
ON
CCC
2 WIRE ZONE VALVE
(
NO END SWITCH)
M
UST USE JUMPER
TACO 3 WIRE
ZONE VALVE
1
2
3
JUMPER
3
& 4
TACO 3 WIRE
ZONE VALVE
1
2
3
MULTI-ZONE INSTALLATION
WITH ZONE CONTROL, WITH INDIRECT DHW
ONE ZONE
SWITCHING RELAY
WITH OUTDOOR RESET
SR 501-OR-4
LED
INDICATORS
POWER
TSTAT
DHW
OVERRIDE
BOILER
RELAY
NH
INPUT
120 VAC
ZONE 1
120 VAC
NH
6
AMP
X
R
BOILER TSTAT
W
CR
W
DHW
OUTDOOR
SENSOR
SUPPLY
SENSOR
X
DESIGN OUTDOOR
TEMPERATURE
FOR 180°F SUPPLY
TEMPERATURE
OFF
-30
-20
0
-10 10
20
40
30
ON
SW1
OFF
ZONE VALVE
CIRCULATOR
N
H
POWER
INPUT
(120 VAC)
BOILER
CONTROL
OUTDOOR
SENSOR
BOILER
SUPPLY
SENSOR
POT1
1234
Z
ONE 1
1234
Z
ONE 2
1234
Z
ONE 3
E
XISTING
Z
ONE VALVE CONTROL
POWER IN
24 VAC
N/O COM
N/C
PUMP END
S
WITCH
FUSE
5 AMP
ZONE 3 PUMP
END SWITCH
THERMOSTATS
(24VAC)
T
STAT 1
V
ALVE 1
T
STAT 2
V
ALVE 2
T STAT 3
V
ALVE 3
POWER
LED
INDICATORS
ZONE 1 ZONE 2 ZONE 3
ISOLATED
XX
RW
RW RW
END SWITCH THERMOSTATS
PRIORITY
24 VAC ZONE VALVES
PRIORITY
XX
Z
ONE 3
PRIORITY
OFF
ON
CCC
2 WIRE ZONE VALVE
(NO END SWITCH)
M
UST USE JUMPER
T
ACO 3 WIRE
ZONE VALVE
1
2
3
JUMPER
3 & 4
TACO 3 WIRE
ZONE VALVE
1
2
3
D
HW
A
QUASTAT
A
4