Mechanical Aquastat Wiring Diagrams
Common wiring diagrams are shown below. Select the appropriate diagram for the application. Diagrams are popular examples only. If your application is not shown, contact AMTROL Technical Support at 401.535.1216.
Boiler Controls
Typical Oil Burner
Typical Gas Valves
24V Thermostat Input (Priority)
L1
AQUASTAT
HONEYWELL
R4222D 1013
OR EQUIVALENT
DPDT RELAY
1 | 3 | ZR |
|
| |
| 2 |
|
4 | 6 |
|
| 5 | CIRCULATOR |
|
| |
| COIL |
|
|
| L2 |
W
Z
AQUASTAT
L1
HONEYWELL
R4222D 1013
OR EQUIVALENT B DPDT RELAY
1 | 3 |
| 2 |
4 | 6 |
| 5 |
| CIRCULATOR |
| COIL |
| L2 |
| HONEYWELL |
|
| R4222D 1013 |
|
T | OR EQUIVALENT | T |
DPDT RELAY |
AQUASTAT |
| 1 | 3 |
|
|
| 2 |
| C1 | 4 | 6 |
|
|
| |
|
|
| 5 |
|
|
| CIRCULATOR |
L1 |
|
| COIL |
|
|
|
WHEN NO “ZR” TERMINAL IS AVAILABLE
GO TO THE SUPPLY SIDE OF THE HI LIMIT
L2 |
Zone Valves
|
|
AQUASTAT | AQUASTAT |
|
|
|
|
| 24VAC |
| 24VAC |
|
|
|
|
END |
|
|
|
|
|
SWITCH |
|
|
|
| MOTOR |
|
|
| TRANSFORMER | ZONE VALVE | |
ZONE VALVE | TRANSFORMER | L2 | L1 | END | |
|
|
|
| ||
| L2 | L1 |
|
| SWITCH |
|
|
|
| ||
Other Applications
AQUASTAT
L2 L1
DHW ZONE
XX TO BOILER
CIRCULATOR
OR ZONE VALVE
Boiler Control Input
AQUASTAT
DHW ZONE
CIRCULATOR
OR ZONE VALVE