Main Burner And Thermostat Operation; Pilot Flame Characteristics - White Mountain Hearth VFP24FP3 Series Installation Instructions And Owner's Manual

Cleaning and Maintenance/Pilot
Oxygen Depletion Sensor Pilot (Figures 17 and 18)
When the pilot has a large yellow tip flame, clean the Oxygen
Depletion Sensor as follows:
1. Clean the ODS pilot by loosening nut B from the pilot tubing.
When this procedure is required, grasp nut A with an open end
wrench.
2. Blow air pressure through the holes indicated by the arrows.
This will blow out foreign materials such as dust, lint and spider
webs. Tighten nut B also by grasping nut A.
Never use needles, wires, or similar cylindrical objects to
clean the pilot to avoid damaging the calibrated ruby that
controls the gas flow.

MAIN BURNER AND THERMOSTAT OPERATION

The VFP24FP2 Series gas control maximum and minimum
inputs are listed below.
OFF is the OFF position.
PILOT is the PILOT position.
VFP24FP2 Series
Max. 20,000 BTU/HR
Min. 10,000 BTU/HR
VFP24FP3 Series Main Burner Operation
The gas control modulates from a minimum input of 14,000 BTU/HR
(LO setting) to a maximum input of 20,000 BTU/HR (HI setting).
VFP24FP3 Series (with 10,000 BTU burner)
Fixed 10,000 BTU/HR
Page 16

PILOT FLAME CHARACTERISTICS

WARNING
A
B
Millivolt Pilot
A
B
Hydraulic Thermostat
Figure 18
Cleaning and Maintenance / Main Burner
Turn off heater and let cool before cleaning.
You must keep control areas, burner and circulating air
passageways of heater clean. Inspect these areas of heater
before each use. Have heater inspected yearly by a qualified
service person. Heater may need more frequent cleaning due to
excessive lint from carpeting, bedding materials, etc.
Logs
Be careful cleaning and handling logs so as not to damage them.
If logs break or fall apart in handling, spray the broken pieces and
fibers with water, sweep up and discard.
Figure 17
WARNING
CAUTION
25783-5-1011