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procedure may be necessary to determine safe operation of the equipment. If it is determined
that a condition exists which could result in unsafe operation, the appliance should be shut off
and the owner advised of the unsafe condition. Corrections must be made before the appliance
is put into continuous operation. The following steps should be followed in making a safety
inspection.
1.
Visually inspect the venting system for proper size and determine that there is no flue
gas spillage, blockage or restriction, leakage, corrosion and other deficiencies which
could cause an unsafe operation.
2.
Insofar as practical, close all building doors, fireplace dampers, windows, and all doors
in area in which the appliance is located. Turn on clothes dryers, any exhaust fans,
such as range hoods and bathroom exhausters so they operate at maximum speed. Do
not operate a summer exhaust fan. If, after completing Steps 3 through 7 it is believed
sufficient combustion air is not available, refer to the National Fuel Gas Code
A.N.S.I.Z223.1, or any applicable local codes for guidance.
3.
Place in operation the appliance being inspected. Follow the lighting instructions and
adjust thermostat so appliance will operate continuously.
4.
Determine that the pilot or burner is operating properly and that the main burner ignition
operates satisfactorily, by interrupting and re-establishing the electrical power of the
appliance in any convenient manner. Test the pilot or burner safety device to determine
if it is operating properly by extinguishing the pilot or disconnecting the flame safety
circuit and pressure switch sensing tube from pressure switch.
5.
Visually determine that the main burner is burning properly; i.e., no floating, lifting or
flashbacks. Perform a smoke test on oil-fired system; the burner should operate at a
zero to a trace smoke. This can indicate reduced available combustion air to burner.
6.
If appliances are equipped with high and low flame control or flame modulation, check
for proper main burner operation at low flame.
7.
Test for spillage at draft hood or barometric draft control opening and burner inlet air
location after 5 minutes of main burner operation. Use a draft gauge, flame of a match
or candle, smoke from a cigarette, cigar or pipe. If spillage occurs, adequate air is not
available. Shut off heating appliance thermostat and check for spillage around the draft
hood, barometric draft control or burner inlet air location after power venter has stopped
operation. If a flow reversal is noticed, house depressurization is occurring and make
up air is required. For oil-fired systems, this may be noticed by oil fume smell after post
purge cycle.
8.
Turn on all fuel burning appliances within the same room so that they will operate at
their maximum input. Then repeat Steps 5 through 7.
9.
Return doors, windows, exhaust fans, fireplace dampers and any other fuel-burning
appliances to their previous condition of use.
X. MAINTENANCE:
1.
Motor: Inspect the motor once a year - motor should rotate freely.
2.
Wheel: Inspect the venter wheel annually to clear any soot, ash or coating which inhibits
either rotation or air flow. Remove all foreign materials before operating.
3.
Vent System: Inspect all vent connections annually for looseness, for evidence of corrosion
and for flue gas leakage. Replace, seal, or tighten pipe connections if necessary. Check the
power venter choke plate to insure it is secured in place. Check the barometric draft control,
if installed, to insure the gate swings freely.
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