Intermittent Use - Mr. Heater MH40NG Operating Instructions And Owner's Manual

clockwise to increase pilot flame.
to ensure proper operation.
Pressure regulator
Manual gas
control knob
boss
Gas
inlet
Pilotstat Pilot flow adjusting screw
power unit
system, possible defects that will cause there symptoms and
screw in
outside corner
pressure
regulator
opening
Pilot gas
regulator
outlet
tapping
directly
Pilot out of adjustment
burner orifice
then check for damaged manifold.
Gas cock not in position
Pilot gas flow adjustment screw may be closed

Intermittent Use

can cause the gas control to deteriorate more rapidly, the system
should be checked more often.
The gas control should be replaced if:
to pop back up when released.
procedure is as stated on the plate attached to the heater.
Replace
Replace
Gas control knob must be turned to pilot
and held depressed
6