IBC SL 35-199

3-3
STARTUP AND COMMISSIONING
SL 35-199, SL 45-260 MODULATING GAS BOILERS
de-ration. The boiler will automatically de-rate at altitudes above 4,500 feet.
Refer to the IBC Altitude tables for further information.
Toverifyproperoperationofthegasvalveintheeld,thefollowingprocedure
canbecarriedoutbyaqualiedtechnician.
1. TurnOFFthegassupplytotheboiler.Withasmall(1/8"or3mm)at
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re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re.
3. Withacombustionanalyzerprobeintheuegastestport,turntheGas:Air
Ratio Adjustment screw (see Figure 31a for the SL 35-199 Gas Valve and
Figure 31b for the SL 45-260 Gas Valve) to achieve results listed in Table
7below.CheckandadjustifnecessarythehighreCO
2
levelsrstbefore
checkingandadjustingthelowre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 re).
4. Conrmtheminimumrelevelsettings.Re-denetheloadas“Manual
Control”.UseHeatOutputin“CongureLoadx”tocontroltheoutputas
needed.ReadingshouldbewithinLowrerange.Re-testathighre.
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 35-199 (Natural Gas) CO
2
9.1 -9.7 9.5 8.4 – 9.0 8.7 150
SL 35-199 (Propane) CO
2
10.5 – 11.1 10.8 9.4 – 10.2 9.8 180
SL 45-260 (Natural Gas) CO
2
9.1 – 9.7 9.5 8.4 – 9.0 8.7 120
SL 45-260 (Propane) CO
2
10.5 – 11.1 10.8 9.4 – 10.2 9.8 150
Table 7: Combustion test target ranges - CO
2
/ Maximum CO