Amtrol HM-41Z, HM-80Z, HM-80L, HM-41L warranty Mechanical Aquastat Wiring Diagrams, Boiler Controls

7. 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 (Non-Priority)

Typical Gas Valves (Non-Priority)

24V Thermostat Input (Priority)

L1

AQUASTAT

HONEYWELL

R4222D 1013

OR EQUIVALENT

DPDT RELAY

1		3	ZR
	2
4		6
	5		HYDROMAX™
	COIL		CIRCULATOR
			L1

W

Z

AQUASTAT

L1

HONEYWELL

R4222D 1013

OR EQUIVALENT B DPDT RELAY

1		3
	2
4		6
	5	HYDROMAX™
	COIL	CIRCULATOR
		L2

	HONEYWELL
	R4222D 1013
T	OR EQUIVALENT	T
	DPDT RELAY

AQUASTAT		1		3
			2
	C1	4		6
			5	HYDROMAX™
			COIL	CIRCULATOR
L1

WHEN NO “ZR” TERMINAL IS AVAILABLE

GO TO THE SUPPLY SIDE OF THE HI LIMIT

L2

Zone Valves

3-Wire	4-Wire
AQUASTAT	AQUASTAT

					24VAC
	24VAC
END
SWITCH					MOTOR
			TRANSFORMER		ZONE VALVE
ZONE VALVE	TRANSFORMER		L2	L1	END
	L2	L1			SWITCH

Other Applications

Universal Sensor Kit

Installing Universal 10K Ohm Sensor Kit HYDROMAX models with a mechanical aquastat include a universal temperature sensor kit allowing HYDROMAX to be used with any boiler control featuring a standard “10K” DHW thermisor input (10,000 Ohms at 77° F). When installed, domestic water temperature is regulated by the boiler and the HYDROMAX aquastat is not used.

1.Unscrew and remove copper sensor bulb from sensor well.

2.Insert Universal Sensor to bottom of sensor well.

3.Plug Universal Sensor into Extension cable.

4.Connect wire leads to DHW input terminals on boiler control.

AQUASTAT

SENSOR BULB

(REMOVE)

Multi-Zone Control

AQUASTAT

Boiler Control Input

AQUASTAT

EXTENSION

L2 L1

DHW ZONE

DHW ZONE

CABLE

DHW

BOILER CONTROL

PLUG

XX TO BOILER

HYDROMAX™

CIRCULATOR

OR ZONE VALVE

HYDROMAX™ CIRCULATOR OR ZONE VALVE

UNIVERSAL SENSOR

IN SENSOR WELL

BOILER HYDROMAX

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