IBC SL 28-160, Инструкция по установке и эксплуатации

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3-3
STARTUP AND COMMISSIONING
SL 28-160 MODULATING GAS BOILER
1.
Turn OFF the gas supply to the boiler. With a small (1/8" or 3 mm) flat
screwdriver, open the inlet gas supply pressure test port by turning its
center-screw 1 full turn counterclockwise. Attach a manometer to the
pressure test port and turn on gas to appliance. Static manometer reading
should be ideally 7” w.c., for Natural Gas and 11” w.c. for Propane. Minimum
and maximum static pressure should be between 5” and 14” w.c. Monitor
pressure throughout the commissioning procedure. Pressure may droop up
to 1” to 2” w.c. at high fire but under no circumstances should it drop below
4” w.c. at the gas valve inlet test port.
2.
Allow the boiler to ignite. Run against a large load, to maintain high fire.
3.
With a combustion analyzer probe in the flue gas test port, turn the Gas:Air
Ratio Adjustment screw (see Figure 35) to achieve results listed in Table 7
below. Check and adjust if necessary the high fire CO
2
levels first before
checking and adjusting the low fire settings. High Fire = to increase the
CO
2
turn the adjustment screw Counter Clockwise ( see Table 7 below for
corresponding CO
2
values - set for CO
2
target at high fire ).
4.
Confirm the minimum fire level settings. Re-define the load as “Manual
Control”. Use Heat Output in “Configure Load x” to control the output as
needed. Reading should be within Low fire range. Re-test at high fire.
5.
Turn boiler off by removing the call for heat (use the Installer Set Up
screen to turn load to off if no other ready means available). Turn off gas
then remove the manometer connections, and turn the centre-screw in the
manifold pressure test port clockwise until fully closed. Ensure fully closed,
but not over-tightened. Restore gas and soap test for leaks.
MODEL HIGH FIRE LOW FIRE
CO
MAX
PPM
RANGE TARGET RANGE TARGET
SL 28-160 (Nat. Gas) 8.4 to 9.6% CO
2
9.45% CO
2
8.0 to 8.7% CO
2
8.7% CO
2
< 150
SL 28-160 (Propane) 9.6 to 11.0% CO
2
10.8% CO
2
9.2 to 10.4% CO
2
9.8% CO
2
< 200
Table 7: Combustion test target ranges - CO
2
/ Maximum CO
Zero-offset adjustment cap
Gas:Air ratio adjustment screw. This
screw offers very fine adjustment,
and may require several turns.
Figure 35: Gas Valve
Flue gas test port plug
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.
Manifold pressure test port