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NB18/NB24 Gas Log Set
Monessen • NB18/24 Gas Log Set Installation/Owner's Manual • 81D0107 • Rev E • 04/18
ELECTRICAL WIRING - MILLIVOLT
CONNECT 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.
NOTE: Do not allow wires touch grate or burner.
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.
CHECK SYSTEM OPERATION
The millivolt system and individual components may be
checked with a millivolt meter having a 0-1000 mV range.
Conduct each check shown in chart below by connection
meter test leads to terminals as indicated.
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, pro-
ceed 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.
FP2268
remote receiver
TP/TH = 2
TP = 1
TH = 3
Figure 17 -
Installing Remote Receiver
Remote Receiver
Remote Wire
Connectors
Remote Wire
Connectors
Valve
FP2268
Check
Test
To Test
Connect Meter Leads
to Terminals
Switch to Thermostat
Contacts
Meter Should Read
A
Complete System
2 and 3
Closed
Minimum 175
B
Thermopile Output
1 and 2
Open
Minimum 500
Summary of Contents for BC18-R
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