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SFT 28-199 - Fuel Conversion to Natural Gas
(LP to NG) Kit P-803
Note
If converting from natural gas to propane, order the propane conversion parts kit (IBC Part # P-802) from your
authorized IBC distributor.
Use the natural gas conversion parts kit if the fuel source at the site uses natural gas and the modulating water heater
has been set up to operate with propane. Check the rating plate on the water heater to see which fuel source the
particular unit has been set up with.
Using this conversion kit, a qualified technician will need to:
1. Perform a fuel conversion.
2. Perform a combustion test.
3. Fill in the information required on the fuel conversion labels, and affix them to the unit after the conversion is
completed.
Warning
This conversion kit shall be installed by a qualified service agency in
accordance with the manufacturer's instructions and all applicable codes and
requirements of the authority having jurisdiction. If the information in these
instructions is not followed exactly, a fire, an explosion or production of carbon
monoxide may result causing property damage, personal injury or loss of life.
The qualified service agency is responsible for the proper installation of this kit.
The installation is not proper and complete until the operation of the converted
appliance is checked as specified in the manufacturer's instructions supplied
with the kit.
The unit will automatically de-rate the maximum input at a rate of approximately 2% per 1,000' above 4,500'. The gas
valve's zero-governor will ensure that the gas-air mixture is not affected at altitude.
Included with the conversion kit:
1 x Orifice - marked "660" - IBC Part # 180-173
1 x O-ring - IBC Part # 150-175
1 x Rating Plate Fuel Overlay - IBC Part # 080-224A
1 x Gas Valve Conversion Label - IBC Part # 080-107B
1 x Installer Identifier Label - IBC Part # 080-211A
120-241E-R1
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Summary of Contents for IBC SFT 28-199
- Page 1 SFT 28-199 - Fuel Conversion to Natural Gas (LP to NG) Kit P-803 Note If converting from natural gas to propane, order the propane conversion parts kit (IBC Part # P-802) from your authorized IBC distributor. Use the natural gas conversion parts kit if the fuel source at the site uses natural gas and the modulating water heater has been set up to operate with propane.
- Page 2 Combustion Test Target Ranges Figure 1 Gas valve and fan The Low Fire (zero-offset) valve adjustment cap on the gas valve has been factory set. Do not adjust this screw in the field unless indicated in these instructions. After converting the unit to natural gas, a combustion (CO ) reading must be taken by a qualified technician using properly functioning and calibrated combustion analyzing equipment and the results compared to the values in Table 1.
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Page 3: Fuel Conversion Instructions
7. Test for leaks by using an approved leak detection solution on all joints. 8. Power on the water heater unit. Now, carefully follow the procedures on Combustion Testing and Adjustment. SFT 28-199 - Fuel Conversion to Natural Gas (LP to NG) Kit P-803... - Page 4 Combustion Testing and Adjustment Danger A combustion test checks that the gas valve is operating properly in the field. To perform a combustion test, you must be a qualified, trained and licensed gas fitter. Making adjustments to the IBC gas valve without a properly calibrated gas combustion analyzer and by people who are not trained and experienced in its use is forbidden. Failure to use an analyzer can result in an immediate hazard. Model Number High Fire Input SFT 28-199 199 MBH Table 4 Rated input of a converted unit Normal ignition system sequence of operation: The unit's control, upon a call for DHW, turns on the combustion fan for a short pre-purge, then energizes the spark electrode and gas valve for a 5-second trial for ignition.
- Page 5 1. Fill in the conversion labels (included in the kit) associated with the new fuel type. 2. Place the conversion labels onto the unit at the positions indicated on the last page. SFT 28-199 - Fuel Conversion to Natural Gas (LP to NG) Kit P-803...
- Page 6 Clocking the Meter (for Natural Gas only) 1. Turn off all other appliances and pilots. 2. Turn on the unit and set the unit to high fire. 3. Ensure the unit has a large load to heat, so that the unit will not shut off. 4.
- Page 7 Where to Place Conversion Labels on the Water Heater SFT 28-199 - Fuel Conversion to Natural Gas (LP to NG) Kit P-803...