INSTALLATION AND OPERATION INSTRUCTIONS
3-2
HC SERIES BOILERS
HC 13-50, HC 15-95, HC 15-96, HC 20-125, HC 33-160
3.2 PRIOR TO START-UP
3.2.1 Pre-Ignition Checks
1.
Fill condensation trap. Ensure venting system is complete and seal tested.
Confirm any common venting system at the installation site is isolated and
independent of the HC boiler, that any holes left from removal of a previous
boiler have been sealed, and that any resizing of the old flue has been done.
2.
Check water piping system is fully flushed and charged, and that all air has
been discharged through loosened bleed caps. Use a minimum water pressure
of 12 psig and confirm pressure relief valve is installed and safely drained.
3.
Check to see that adequate gas pressure is present at the inlet gas supply
test port. With the boiler gas valve shut off, open the test port (using a small
(1/8" or 3 mm) flat screwdriver, open the test port by turning its center-screw
1 full turn counterclockwise. Connect a manometer and open the gas control
valve. Requirements are minimum 5" w.c and maximum 14" w.c. Check to
ensure no gas leaks.
4.
Perform a final check of electrical wiring and provide power to the boiler to
initialize operation.
3.2.2 Test Ignition Safety Shutoff
With the boiler in operation, test the ignition system safety shutoff device by
shutting the manual gas valve immediately outside the boiler case. Ensure
boiler has shut off and the appropriate Error information is displayed on the Main
Display screen. To restart boiler, reset power.
COMMISSIONING
The HC Series modulating boilers are factory calibrated to operate with natural
gas at sea level.
The Low Fire (Zero Offset) screw is not to be adjusted in the
field.
The High fire (Gas : Air Ratio Adjustment) screw may have to be adjusted to
attain optimum combustion results if required, however,
no mixture adjustment
shall be performed unless done by a qualified technician using properly
functioning and calibrated combustion analyzing equipment.
This boiler model can burn either Natural gas or Propane if equipped
with the correct specified orifice. Examine the rating plate of the boiler
to ensure it is configured for the fuel you are using. If the boiler is to be
converted from Natural Gas to Propane or from Propane to Natural Gas a
Fuel Conversion Kit must be installed. The correct Fuel Conversion Kit part
number can be found in Table 9.
MODEL NUMBER
NATURAL GAS
TO PROPANE
PROPANE TO
NATURAL GAS
HC 13-50
P-704
P-705
HC 15-95
P-747
P-748
HC 15-96
P-747
P-748
HC 20-125
P-737
P-738
HC 33-160
P-702
P-703
Table 9: Fuel Conversion Kits
3.3
DANGER
Making adjustments to
the IBC gas valve without
a properly calibrated gas
combustion analyzer and by
persons who are not trained
and experienced in its use
is forbidden. Failure to use
an analyzer can result in an
immediate hazard.
DANGER
Fill trap with water before
boiler is first fired to prevent
exhaust fumes from entering
room. Never operate the
boiler unless the trap is filled
with water.
Failure to comply will result
in severe personal injury or
death.
