Remote Receiver; Checking System Operation - Vermont Castings NBST27 Installation Instructions Manual

NBST27 Unvented Gas Log Set
CONNECT REMOTE RECEIVER
1. Set remote receiver. Refer to instructions included in
the receiver kit.
2. Connect the two (20 1/4" female connectors to the TP/
TH and TH terminals on the control valve.
Do not allow wires to touch grate of
burner.
NOTE: Heat reduces battery life. 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 components may be
checked with a millivolt meter having a 1-1000 mV range.
Conduct each check shown in chart by connecting meter
test leads to terminals as indicated.
Check
Test To Test
A Complete
System
B Thermopile
Output
Remote
Wires
Remote
Receiver
Figure 15 -
Install Remote Receiver
14
Connect Switch or
Meter Leads Thermostat
To Terminals Contacts
2 & 3 Closed
1 & 2 Open
Remote Wire
Connectors
Valve
ELECTRICAL WIRING - MILLIVOLT
A. Complete Millivolt System Check
("A" Reading - Thermostat contacts CLOSED - Control
knob "ON" - Main burner should turn ON)
1. If reading is more than 175 millivolts and the au-
tomatic valve still does not come on, replace the
control.
2. If the closed circuit reading ("A" reading) is less
than 175 millivolts, determine cause for low read-
ing, proceed to Section B.
B. Thermopile Output Reading Check
("B" Reading - thermostat contacts OPEN - Main burn-
er 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.
Meter
Reading
Should Be
Minimum 175
Minimum 500
FP2376
FP2376
remote switch
81D3032