Munchkin MUNCHKIN HIGH EFFICIENCY HEATER with the "925" Controller manual Electrical

				DIAGRAM "A"
		WIRING DIAGRAM CONNECTING TO CIRCULATOR
		GREEN (GROUND)
		WHITE (NEUTRAL)
		BLACK		BROWN (NEUTRAL)	GREEN (GROUND)
NORMALLY OPEN			ORANGE (HOT)
	THERMOSTAT
	CONNECTION
	GRAY
T					WHITE
					(NEUTRAL)
T	GRAY				BLACK
					(HOT)
					GREEN
					(GROUND)
				ELECTRICAL
			SWITCH JUNCTION BOX
				120V 60 HZ

Figure 2-1: Connection Wiring Directly to Central Heating Circulator

ZONE
THERMOSTAT
R845A				BOILER
SWITCHING
				"TT"
RELAY ZONE
				GRAY
1K1		5	3
T
T
		1K1	1K2
1	2	6	4	BOILER
				"TT"
				GRAY
			ZONE
L1 HOT (BLACK)			CIRCULATOR
120 VOLT
L2 NEUTRAL
(WHITE)

Figure 2-3: For circulator amp loads greater than 4 amps (3 amps for “HA” models) use the wiring diagram shown at left. The brown and orange wires will not be used in this application.

					ELECTRICAL
			DIAGRAM "B"
	WIRING DIAGRAM WITHOUT CONNECTION TO CIRCULATOR
		ORANGE BROWN GREEN			IMPORTANT NOTE:
					BE CERTAIN THAT THE ORANGE
					WIRE IS SECURELY CAPED.
					FAILURE TO DO SO COULD
					RESULT IN INJURY OR FIRE
					AND COULD DAMAGE THE CONTROL.
NORMALLY OPEN		ORANGE (HOT)	BROWN (NEUTRAL)	GREEN (GROUND)
	THERMOSTAT
	CONNECTION
T	GRAY				WHITE
	GRAY				(NEUTRAL)
T					BLACK
					(HOT)
					GREEN
					(GROUND)
					GROUND
					BUS
				ELECTRICAL
		SWITCH JUNCTION BOX
				120V 60 HZ

Figure 2-2: Connection Wiring without Wiring Central Heating Circulator

Note to Electrical Contractor: The orange wire is 120 Volt/4 Amp maximum for central heating circulator only. Loads greater than 4 amps or 3 amps for HA models only will blow the fuse on the board. The brown wire is the neu- tral wire for the central heating pump only.

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