INSTALLATION AND OPERATION INSTRUCTIONS
3-4
SL 30-175, SL 45-260 MODULATING GAS BOILERS
Fuel ConVersion
The SL 30-175 and SL 45-260 modulating boilers are factory fire-tested to
operate with natural gas, or propane as ordered. the rating plate will be marked
to indicate which fuel the particular boiler has been set up with. Firing a boiler
with a fuel other than what is listed on the rating plate is prohibited unless the
following conversion procedure is completed by a qualified technician.
refer to the preceeding section 3.3 - CoMMissioning. the Zero-offset valve
adjustment cap on the gas valve has been factory sealed using red paint-seal
compound.
This cap must not be tampered with. The Zero-offset screw is
not to be adjusted in the field.
the gas:air ratio adjustment screw will have to be adjusted to attain optimum
combustion results whenever fuel conversion is undertaken, however,
no
mixture adjustment shall be performed unless done by a qualified
technician using properly functioning and calibrated combustion analyzing
equipment.
The following procedure can be carried out by a qualified technician
(see Figure
33).
1.
ensure that the gas supply is turned off at the gas control valve.
2.
loosen the gas valve harness plug screw and disconnect the gas valve
harness plug from the gas valve.
3.
disconnect combustion air snorkel from the venturi.
4.
uning a 4 mm hex head wrench, undo the three venturi mounting screws.
5.
separate and lift the gas valve up and away from the venturi assembly.
6.
If converting a Natural Gas boiler to Propane
: remove the brass Propane
orifice from its packaging and seat the orifice inside the rubber grommet in
the gas valve body.
If converting a Propane boiler to Natural Gas:
remove the brass Propane
orifice from the inside of the rubber grommet in the gas valve body.
Do not
disturb the rubber grommet.
7.
re assemble the valve to the venturi assembly and tighten the three venturi
mounting screws.
8.
restore gas supply by opening the gas control valve, and using an approved
leak detection solution, soap test all joints.
9.
Place the conversion labels associated with the new fuel onto the boiler at
the positions indicated on the the applicable conversion Kit instruction sheet.
•
For the sl 30-175 natural gas to Propane conversion Kit - iBC Part #168a
•
For the sl 30-175 Propane to natural gas conversion Kit - iBC Part #169a
•
For the sl 45-260 natural gas to Propane conversion Kit - iBC Part #170a
•
For the sl 45-260 Propane to natural gas conversion Kit - iBC Part #171a
10.
Carefully follow the “Prior to start-up “ - section 3.2 and “Commissioning” -
section 3.3 procedures on the preceeding pages 3-2 and 3-3.
3.4
DANGER
Operating any IBC boiler
using a fuel other than the
fuel listed on its rating plate is
prohibited. If the information
in this section related to
conversion to alternate
fuels is not followed exactly,
a dangerous situation can
result, leading to fire or
explosion, which may cause
property damage, personal
injury, or loss of life.
Disconnect gas valve harness plug
Disconnect combustion air snorkle
Содержание SL 30-175
Страница 76: ...NOTES...