Gas boiler 6 720 808 897(2013/08) US/CA Conversion instructions from natural gas to propane Logano GC 144 II Read carefully prior to installation and maintenance.
Contents Contents 1 2 Safety considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 Safety considerations 1.1 Key to symbols Warnings Warnings in this document are identified by a warning triangle printed against a grey background.
Product information 2 Product information 2.1 Correct use 2 This conversion kit and the accompanying instructions are for conversion of GC 144 II special gas-fired boilers from natural gas to propane. Requirements GC 144 II–18 74 MBtu/hr GC 144 II-25 103 MBtu/hr GC 144 II-32 132.5 MBtu/hr Table 2 Requirements 2.
3 Conversion to propane WARNING: Risk to life through the explosion of volatile gases. ▶ Wait five (5) minutes until all gas residues have dissipated. Check whether there is any smell of gas, including at floor level. If you can smell gas, close the gas shut-off and disconnect the heating system from the power supply and contact the customer service technician or the gas company. 2 ▶ If there is no sign of a gas odor, continue with the next step. Removing burner ▶ Secure gas manifold with wire or cord.
Conversion to propane Converting gas valve ▶ Remove the safety screw [1] for the manifold pressure adjustment on the gas valve. ▶ Remove manifold pressure adjustment screw [2]. ▶ Remove stainless steel spiral spring [3]. ▶ Install the red spring from the Honeywell conversion kit in the gas valve. ▶ Screw in the new gas adjustment screw from the Honeywell conversion kit until it is flush with the top of the gas valve. Then screw the manifold pressure adjustment screw six (6) revolutions clockwise.
4 4 Start-up instructions Start-up instructions 2 For your own safety, read before boiler start-up. WARNING: Risk to life due to not observing the start-up instructions and resulting malfunction. ▶ If these instructions are not followed exactly, fire or explosion may result causing serious property damage, loss of life, or serious personal injury. ▶ Observe the installation instructions.
Final start-up procedures 5 5 Final start-up procedures Verifying the ignition spark ▶ Look through the sight glass at the igniter and verify that a spark is visible. 1 1 6 720 804 435-10.1T Fig. 10 Gas valve [1] 6 720 804 435-09.1T Fig. 9 [1] GC 144 II Sight glass ▶ Should no spark be visible continue to troubleshooting procedure in the installation and service manual. WARNING: Risk to life from fire or explosion. ▶ Never use excessive force on the ON/OFF knob ( figure 10).
5 Final start-up procedures ▶ Remove pressure measuring nipple and pressure gauge for measuring gas pressure and orifice pressure from the gas valve, and close the openings with the screw plugs. 2 3 1 1 5 4 6 720 804 435-12.1T 6 720 804 435-11.1T Fig. 11 Gas valve [1] [2] [3] [4] [5] Fig. 12 Main burner [1] ▶ Record the measured value in the start-up protocol. Install the safety screw back into the gas valve.
Final start-up procedures ▶ Carefully wipe away the soapy water to prevent corrosion caused by the alkaline content of the soap. 5 ▶ Replace front door and close. Checking the vent damper WARNING: Risk to life due to leaking flue gases. ▶ Verify the functionality and operability of the vent damper. ▶ Check the position of the vent damper. The damper must be fully open (vertical). When burner is on flue gases must not escape from the open draft hood. 1 5 6 4 3 6 720 804 435-15.1T 7 Fig.
5 Notes 10 Logano GC 144 II – 6720808897 (2013/08)
5 Notes Logano GC 144 II – 6720808897 (2013/08) 11
