Gas Log Set Installation
19
NBST27 Unvented Gas Log Set
Monessen • NBST27 Gas Log Set Installation/Owner's Manual • 81D3032 • Rev A • 08/16
OPERATING INSTRUCTIONS
MILLIVOLT CONTROL LIGHTING INSTRUCTIONS
1. STOP! Read the safety information label.
2. Make sure the manual shutoff valve is fully open.
3. This gas log set is equipped with an ignition device (piezo) which automatically lights the pilot. If piezo
ignitor does not light the pilot, refer to instructions for Match Lighting Instructions, Page 22.
4. Turn gas control knob clockwise to the OFF position and turn ON/OFF switch to OFF position.
5. Wait(5)minutestoclearoutanygas.Thensmellforgas,includingneartheoor.Ifyousmellgas,
STOP! Follow the instructions under What To Do If You Smell Gas, Page 20.
6. From OFF position, turn the gas control knob counterclockwise
to IGN position. Push in control
knob for 5 seconds. NOTE: If you are running the heater for the rst time, it may be necessary to
press in the control knob for 30 seconds or longer to allow air to bleed out of the gas piping.
7. With the control knob pushed in, push in and release the piezo ignitor button to light the pilot.
8. Continuepushingthecontrolknobinforafurther60secondstopreventtheamedetectorfromshut-
ting off the gas while the probe is warming up. Release the control knob.
9. Turn gas control knob counterclockwise
to the ON position.
10. After the pilot has been lit for one minute, the burners can be turned on. Turn the ON/OFF switch to
ON position.
11. If the gas logs will not operate, follow the instructions To Turn Off Gas To Heater below and call your
service technician or gas supplier.
Figure 31 -
Pilot
FP2374
controls
On/Off/Pilot
Knob
Switch
Hi/Lo
Knob
Piezo Ignitor
TO TURN OFF GAS TO HEATER
1. Turn control knob clockwise to OFF position to completely shut off the heater.
2. If applicable: Turn ON/OFF switch to OFF position and/or set thermostat (if present) to lowest setting.
3. If applicable: Turn off all electric power to the heater.
Figure 32 -
Controls