IBC SL 26-260 G3 Quick Start Manual
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Also See for SL 26-260 G3:
- Installation and operating instructions manual (88 pages) ,
- Installation & operating manual (121 pages)
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Note
If converting from Propane to Natural Gas, order the Natural Gas Conversion Parts Kit (IBC Part # P-
301) from your authorized IBC Distributor.
Use the Propane Gas conversion parts kit if the fuel source at the site uses Propane and the modulating boiler has
been set up (factory fire-tested) to operate with Natural Gas. Check the rating plate on the boiler to see which fuel
source the particular boiler 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 boiler 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 boiler will automatically de-rate the maximum input at a rate of approximately 2% per 1,000' above 4,500'. The
gas valves zero governor will ensure that the gas:air mixture is not affected at altitude.
Included with the conversion kit:
1 x LP Mixer, 260 G3 - IBC Part # 180-162
1 x O-ring - IBC Part # 150-073
1 x Rating Plate Fuel Overlay - IBC Part # 080-240
1 x Gas Valve Conversion Label - IBC Part # 080-107
120-271F R2
SL 26-260 G3 - Fuel Conversion to
Propane (NG-LP) P-300
1 x Installer Identifier Label - IBC Part # 080-244A
3 x Screw M4 x 12 IBC Part # 150-164
3 x Washer, Flat I BC Part # 150-099
1 x Gasket, Gas Valve Coupler I BC Part # 250-742C1
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Summary of Contents for IBC SL 26-260 G3
- Page 1 SL 26-260 G3 - Fuel Conversion to Propane (NG-LP) P-300 Note If converting from Propane to Natural Gas, order the Natural Gas Conversion Parts Kit (IBC Part # P- 301) from your authorized IBC Distributor. Use the Propane Gas conversion parts kit if the fuel source at the site uses Propane and the modulating boiler has been set up (factory fire-tested) to operate with Natural Gas. Check the rating plate on the boiler to see which fuel source the particular boiler 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 boiler 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 boiler will automatically de-rate the maximum input at a rate of approximately 2% per 1,000’ above 4,500’. The gas valves zero governor will ensure that the gas:air mixture is not affected at altitude. Included with the conversion kit: 1 x LP Mixer, 260 G3 - IBC Part # 180-162 1 x Installer Identifier Label - IBC Part # 080-244A 1 x O-ring - IBC Part # 150-073 3 x Screw M4 x 12 IBC Part # 150-164 ...
- 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 tamper with or adjust this screw in the field. Contact the factory for written instructions if considering field adjustment of the Low Fire (zero offset) adjustment. The High Fire (Gas:Air) ratio adjustment screw is a slotted brass screw to the left of the long brass protrusion on the front of the gas valve. It 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. Fuel High Fire Low Fire Co Max PPM Range Target Range Target Natural Gas < 150 9.0 – 10.0 8.2 – 9.2 Propane < 250 10.3 – 11.3 10.8 9.3 – 10.3 Table 1 Combustion test target ranges - CO / Maximum CO Note: Low Fire CO 2 should be at least 0.5% lower than High Fire CO 2 .
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Page 3: Fuel Conversion Instructions
Now, carefully follow the procedures on combustion testing and the correct adjustment. 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 SL 26-260 G3 260 MBH Table 2 Rated input of a converted boiler Normal ignition system sequence of operation: The boiler control, upon a call for heat or DHW, turns on the combustion fan for a 20-second pre-purge, then energizes the spark electrode and gas valve for a 4-second trial for ignition. SL 26-260 G3 - Conversion to propane (NG-LP) - P-Kit 300... - Page 4 If the burner does not light, the process is repeated until the burner lights and flame is detected. After 3 trials for ignition, the boiler locks out and will need to be manually reset by clearing the error on the touchscreen controller (Diagnostics > Advanced Diagnostics > Clear Errors). The boiler a utomatically resets after 60 minutes, if no action is taken. To perform a combustion test and adjustment: 1. Turn off the boiler’s gas shut-off valve. 2. 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. 3. Attach a manometer to the inlet 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 (start-up) procedure. Pressure may drop up to 1" to 2" w.c. at high fire. 4. Before you change the load to manual control, note the load setting. 5. Set the load to manual control, and set the heat-out value to the maximum MBH for the boiler. This load should be large enough to allow the boiler to operate at high fire for over 10 minutes. 6. With a combustion analyzer probe in the flue gas test port, check the flue gas reading and adjust the gas:air ratio screw to bring the flue gas to within the parameters indicated in Table 1 7. Adjust slowly (clockwise) the High Fire (Gas : Air Ratio Adjustment) screw to obtain the correct CO value (see Table 1 ). M ake tiny adjustments (may require several turns). Turning the High Fire (Gas: Air Ratio Adjustment) screw clockwise will lean out the flame.
- Page 5 Completing and Affixing the Conversion Labels 1. Fill in the conversion labels (included in the kit) associated with the new fuel type. 2. Place the conversion labels onto the boiler at the positions indicated on the last page. Clocking the Meter (Natural Gas) 1. Turn off all other appliances and pilots. 2. Turn on the boiler and set the boiler to high fire. 3. Ensure the boiler has a large load to heat, so that the boiler will not shut off. 4. With a Stop-Watch, record the number of seconds for the smallest dial to make 1 full revolution. 5. CFH = (3600 x Dial Size) / Seconds. 6. CFH x 1000 (check local Btu content) = Input Btu’s. Note For 2 PSI meters multiply CFH x 1.097 For Metric meters multiply CFH x 35.3 For 2 PSI metric meters multiply CFH x 1.097 x 35.3 For Altitude above 4,500’ deduct 2% per 1,000’ of altitude from the Input Btu’s. SL 26-260 G3 - Conversion to propane (NG-LP) - P-Kit 300...
- Page 6 Where to Place Conversion Labels on the Boiler...