All installations and services must be performed by qualified service personnel.
49
D. BURNER ADJUSTMENT
This unit is designed to require no burner adjustment. Flames should be visually examined at the start of
the heating season and monthly during the heating season. The flames should be checked by looking
through the sight glass in the combustion door and observing the flames inside the burner box. Burner
flames should be clear, blue and almost transparent in color. (See Figure 16). Burner flames should not
impinge or fire against the side of the tube opening.
NOTE:
It is not unusual to have orange tipped
flames visible in the tube for Propane gas.
Figure 16
: These furnace models are an in-shot burner design, which does not require an air
shutter adjustment (air shutters are not used) for proper flame characteristics. Combustion door
should always be in place when operating furnace.
E. FURNACE CHECKOUT PROCEDURE
Before any system of gas piping is finally put into service, it shall be carefully tested to assure that it is
gas tight as indicated in the manual.
NOTICE:
All controls on the unit should be checked for proper functioning prior to the qualified service
personnel leaving the job site. Specifically the following should be checked:
With furnace in normal heating operation, check to make certain blower will start and stop automatically
under control of integrated fan control.
1.
Check safety limit control as follows:
a.
Shut off incoming power.
b.
Block return air opening or disconnect blower motor leads.
c.
Restore power to furnace.
d.
Set thermostat above room temperature calling for heat.
e.
When temperatures are reached in furnace at limit control setting with blower out of
operation, burner should shut off.
f.
Shut off electrical power.
IMPORTANT:
Remove blockage or reconnect blower motor and restore power.
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