Monessen Hearth NB24, NB18 Connecting Remote Receiver, Checking System Operation

ELECTRICAL WIRING (MILLIVOLT)

CONNECTING REMOTE RECEIVER

1.Set remote receiver. See instructions included in receiver kit.

2.Connect the two (2) 1/4" female connectors to the TP/TH and TH terminals on the control valve.

Remote

Wire

Connectors

NOTICE	Do not let wires
	touch grate or
	burner.

Remote

Wire

Connectors

Valve

Remote Receiver

Figure 18 - Installing Remote Receiver

Note: Heat reduces battery life. You can protect the receiver and extend battery life by mounting receiver in wall or other location outside the fireplace.

CHECKING SYSTEM OPERATION

The Millivolt system and individual com- ponents may be checked with a Millivolt meter having a 0-1000 mV range. Con- duct each check shown in chart below by connection meter test leads to terminals as indicated.

		CONNECT	SWITCH OR	METER
CHECK		METER LEADS	THERMOSTAT	READING
TEST	TO TEST	TO TERMINALS	CONTACTS	SHOULD BE
A	COMPLETE	2 & 3	CLOSED	MINIMUM 175
	SYSTEM
B	THERMOPILE	1 & 2	OPEN	MINIMUM 500
	OUTPUT

A.COMPLETE MILLIVOLT SYSTEM CHECK

(“A” Reading - Thermostat contacts CLOSED - Control Knob “ON” - Main burner should turn ON)

a.If the reading is more than 175 Millivolts and the automatic valve still does not come on, replace the control.

b.If the closed circuit reading (“A” reading) is less than 175 Millivolts, determine cause for low reading, proceed to Section B below.

B.Thermopile Output Reading Check

(“B” Reading - Thermostat contacts OPEN - Main burner OFF)

1. Check gas pressure to the unit. If gas pressure is within minimum and maximum on data plate, then check pilot voltage, 500 Millivolts minimum. If the minimum Millivolt reading is not obtainable, replace pilot.

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