UTICA BOILERS MGC-8D Installation, Operation And Maintenance Manual

21, 21 14 - OPERATING YOUR BOILER CHECK THERMOSTAT OPERATION A. When set above temperature indicated on thermostat, boiler should ignite. B. Verify thermostat turns boiler off when room temperature reaches selected setting and starts boiler operating when room temperature falls a few degrees…

11, 11 Boilers connecting to gas vents or chimneys, vent installations shall be in accordance with “Venting of Equipment”, of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or “Venting Systems and Air Supply for Appliances,” of the Natural Gas and Propane Installation Code, CAN/CSA…

12, 12 Minimum Vent Pipe Clearance Wood and other combustible materials must not be closer than 6” from any surface of single wall metal vent pipe. Listed Type B vent pipe or other listed venting systems shall be installed in accordance with their listing. Removing Existing Boiler From Com…

29, UTICA BOILERS MGC-8D 29 APPENDIX A - CONTROL MODULE Table 7 - Troubleshooting Error Codes Error Code Number Denition Consequence 4 Flame current too low. Check for ame. Non critical alarm 6 Flame sensed out of normal sequence (before opening or after closing gas valve). Soft lockout 18 Gas valve rel…

22, 22 15 - MAINTAINING YOUR BOILER BURNERS Beginning of heating season visually check pilot and main burner ames. See Page 16 & 17. SAFETY RELIEF VALVE Refer to page 7 for important information. To test safety relief valve refer to valve manufacturer’s instructions packaged wit…

24, 24 17 - EQUIPMENT AND OPTIONAL ACCESSORIES EXPANSION TANK Expanding water ows into expansion tank. Tank should be correct size. Tank is lled with air. As water expands it compresses air in the tank to form air pressure cushion. This “spring-like” cushion serves to maintain corr…