Patterson-Kelley Thermific, Installation & Owner'S Manual

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Thermific
®
Gas-Fired Boiler Maintenance
Page 21
5.0 MAINTENANCE
5.1 M
AINTENANCE AND
I
NSPECTION
S
CHEDULE
CAUTION!
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dan-
gerous operation.
Verify proper operation after servicing.
5.1.1 Daily
Observe operating temperature and general conditions.
Make sure that the flow of combustion and ventilating
air to the boiler is not obstructed. Determine the cause
of any illuminated red indicators, unusual noises or
operating conditions and make the necessary correc-
tions.
CAUTION!
Check daily to be sure that the boiler area is free and
clear of any combustible materials, including flamma-
ble vapors and liquids.
5.1.2 Weekly
Correct and Abnormal Burner Flames
Observe the conditions of the pilot and main flame. A
normal flame is blue with a well-defined inner core. If
the flame is yellow or if it pulsates, or if the burner
starts with a rumble or puff, corrective action must be
taken.
If the flame pattern is pulsing or if flame is yellow and
lifting off the burner, adjust the air shutter opening
until correct flame pattern is achieved. A general glow
within the combustion chamber is normal.
Correct air adjustment is essential to the efficient op-
eration of this boiler. If an adjustment in the combus-
tion is necessary, the flue gas composition should be
checked with a carbon dioxide (CO
2
) or oxygen (O
2
)
analyzer to set conditions for about 50% excess air.
5.1.3 Monthly (During Operation)
1. Test flame detection by voltage reading at the con-
trol programmer.
2. Test high-limit control by reducing setting below
the operating temperature. Burner should shut off.
After readjusting the thermostat, press the button
to reset the switch.
3. Test operating temperature controls by reducing or
increasing temperature setting as necessary to
check burner operation.
4. Check flue gas temperature at outlet. If there is a
temperature increase over previous readings, this
probably indicates sooting or water scale build-up.
5. Test the water cutoff by trying to restart boiler
with the system pump off. The boiler should not
operate. Water flow indicator should light.
6. Test low gas pressure switch by closing main gas
cock and attempting to restart boiler.
This work should be performed by qualified service
personnel.
5.1.4 Semi-Annually
In addition to the recommended monthly service:
1. Inspect and clean blower fan and inlet screen of
any accumulated dust or lint.
2. Clean burner of any accumulated dust or lint. See
Section 5.2 on "Cleaning the Burner."
3. Inspect burner for any signs of deterioration or
corrosion. Replace immediately if deterioration or
corrosion is evident.
The blower motor is permanently lubricated and does
not require periodic lubrication.
Correct
Abnormal