UTICA BOILERS MGC-8D Installation, Operation And Maintenance Manual
Mgc gas-fired hot water boilers
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Models
MGC-8D
MGC-8DP
MGC-9D
MGC-9DP
C.S.A. Certified for
Natural gas or
Propane
HOT WATER BOILERS
INSTALLATION, OPERATION &
MAINTENANCE MANUAL
Tested for 50 psi.
ASME Working
Pressure
MGC
GAS-FIRED
ECR International, Inc.
2201 Dwyer Avenue, Utica NY 13501
web site: www.ecrinternational.com
P/N
Manufactured by:
240011125
, Rev. C [07/22/2015]
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Table of Contents
Related Manuals for UTICA BOILERS MGC-8D
Summary of Contents for UTICA BOILERS MGC-8D
- Page 1 GAS-FIRED Models HOT WATER BOILERS MGC-8D MGC-8DP INSTALLATION, OPERATION & MGC-9D MAINTENANCE MANUAL MGC-9DP C.S.A. Certified for Tested for 50 psi. Natural gas or ASME Working Propane Pressure Manufactured by: ECR International, Inc. 2201 Dwyer Avenue, Utica NY 13501 web site: www.ecrinternational.com 240011125 , Rev.
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Page 2: Dimensions
1 - DIMENSIONS Figure 1 - Dimensions * Minimum acceptable height for Low Water Cutoff probe. Table 1 - Dimensions DIMENSIONS (INCH.) BOILER MODEL FLUE “A” NUMBER DIAMETER WIDTH MGC-8 27½ MGC-9 30¾ Add 5½” to height for vent Damper. 240011125 , Rev. -
Page 3: Ratings And Capacities
2 - BOILER RATINGS AND CAPACITIES Table 2 - Ratings and Capacities † NATURAL GAS † PROPANE GAS AFUE BOILER NET AHRI HEATING MODEL NET AHRI Heating Input INPUT INTERMITTENT RATING NUMBER CAPACITY Capacity RATING IGNITION WITH Water, VENT DAMPER MGC-8 262.5 83.9... -
Page 4: Table Of Contents
3 - TABLE OF CONTENTS KEEP THIS MANUAL NEAR BOILER 1 - Dimensions ........... 2 RETAIN FOR FUTURE REFERENCE 2 - Ratings And Capacities ........3 3 - Table of Contents ........... 4 IMPORTANT: Read the following instructions 4 - Installation Procedure ........5 COMPLETELY before installing!! 5 - Ventilation &... -
Page 5: Installation Procedure
4 - INSTALLATION PROCEDURE WARNING WARNING Improper installation, adjustment, alteration, Fire hazard. Do not install boiler on combustible service or maintenance could result in death or flooring or carpeting. Failure to follow these serious injury. instructions could result in death or serious injury. FOR INSTALLATION ON NON-COMBUSTIBLE Installation must conform to the requirements of the FLOORS ONLY - For installation on combustible... -
Page 6: Ventilation & Combustion Air
5 - VENTILATION & COMBUSTION AIR Provide combustion air and ventilation air in accordance • All Outdoor Air. Provide permanent opening(s) with the section “Air for Combustion and Ventilation,” of the communicating directly or by ducts with outdoors. National Fuel Gas Code, ANSI Z223.1/NFPA 54, or Sections A. -
Page 7: Connecting Supply And Return Piping
6 - CONNECTING SUPPLY AND RETURN PIPING WARNING Figure 2 - Safety Relief Valve Burn and scald hazard. Safety relief valve could discharge steam or hot water during operation. Install discharge piping per these instructions. RELIEF VALVE DISCHARGE Refer to local codes and appropriate ASME Boiler LINE and Pressure Vessel Code for additional installation requirements. - Page 8 6 - CONNECTING SUPPLY AND RETURN PIPING Verify clean water supply is available to water inlet valve. WARNING Install sand strainer when water supply is from a well or Burn and scald hazard. Safety relief valve could pump. discharge steam or hot water during operation. Install hot water boiler above radiation level or as Install discharge piping per these instructions.
- Page 9 6 - CONNECTING SUPPLY AND RETURN PIPING Figure 4 - Typical Hot Water Piping Figure 5 - Chilled Water Piping 240011125 , Rev. C [07/22/2015]...
- Page 10 6 - CONNECTING SUPPLY AND RETURN PIPING Bypass Piping Required For High Mass (Large Water Content) Systems Figure 6 - BYPASS PIPING - CIRCULATOR ON SUPPLY Figure 7 - BYPASS PIPING - CIRCULATOR ON RETURN 240011125 , Rev. C [07/22/2015]...
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Page 11: Chimney And Vent Pipe Connection
7 - CHIMNEY AND VENT PIPE CONNECTION Connecting The Vent Damper And Vent Connector WARNING Refer to Figure 1, page 2 for size and location of vent (flue Boiler and venting installations shall be performed opening). by a qualified expert and in accordance with the appropriate manual. - Page 12 7 - CHIMNEY AND VENT PIPE CONNECTION After it has been determined that each appliance WARNING remaining connected to the common venting system Boiler and venting installations shall be performed properly vents when tested as outlined above, return by a qualified expert and in accordance with the doors, windows, exhaust fans, fireplace dampers and any other gas-burning appliance to their previous appropriate manual.
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Page 13: Vent Damper Operation
8 - VENT DAMPER OPERATION Figure 8 - Vent Damper Installation Figure 9 - Vent Damper Placement Annually check vent damper and all flue product carrying For further information, and vent damper troubleshooting areas of appliance, with particular attention given to guide, refer to manual packaged with vent damper. -
Page 14: Gas Supply Piping
9 - GAS SUPPLY PIPING • Pressure test over 1/2 psig (3.5 kPa). Disconnect CAUTION boiler and its individual gas shutoff valve from gas WHAT TO DO IF YOU SMELL GAS supply system. • Pressure test at 1/2 psig (3.5 kPa) or less. Isolate •... -
Page 15: Electrical Wiring
10 - ELECTRICAL WIRING VENT DAMPER WIRING WARNING Boiler is equipped with factory wired harness with 4 pin Electrical shock hazard. Turn OFF electrical power molex plug, that plugs into 4 pin molex receptacle inside supply at service panel before making electrical vent damper operator. -
Page 16: Wiring Diagrams
11 - WIRING DIAGRAMS Figure 12 - Integrated High Limit Electronic Ignition Control WARNING Modification, substitution or elimination of factory equipped, supplied or specified components may result in personal injury or loss of life. 240011125 , Rev. C [07/22/2015]... - Page 17 11 - WIRING DIAGRAMS Figure 13 - Integrated High Limit Electronic Ignition Control 240011125 , Rev. C [07/22/2015]...
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Page 18: General Instructions
12 -GENERAL INSTRUCTIONS FILLING SYSTEM WITH WATER NOTICE • Close air vents on all radiation units. Open valves to Never run water in a hot empty boiler. these units. • Verify boiler and expansion tank drain valves are closed. • Air bleed screw on tank drain fitting should be closed. •... -
Page 19: Lighting Instructions
13 - LIGHTING INSTRUCTIONS 5. Remove lower front panel. WARNING 6. Rotate the gas control knob clockwise to “OFF”. If you do not follow these instructions exactly, a fire or explosion may result Figure 14 - Automatic Gas Valve causing property damage, personal injury or loss of life. -
Page 20: Operating Your Boiler
14 - OPERATING YOUR BOILER AUTOMATIC GAS VALVE Figure 15 - Pilot Flame Automatic Gas Valve opens or closes according to heat requirements of thermostat and temperature limit control. It closes if pilot goes out. Each individual control must be operating correctly before any gas can pass to burners. - Page 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.
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Page 22: Maintaining Your Boiler
15 - MAINTAINING YOUR BOILER BURNERS CLEANING YOUR BOILER AND BURNERS Beginning of heating season visually check pilot and main Flue passages between sections should be examined yearly burner flames. See Page 16 & 17. and cleaned if necessary. To clean: SAFETY RELIEF VALVE •... -
Page 23: Service Hints
16 - SERVICE HINTS EQUIPMENT AND OPTIONAL ACCESSORIES - WHAT THEY DO CAUTION WHAT TO DO IF YOU SMELL GAS • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. •... -
Page 24: Equipment And Optional Accessories
17 - EQUIPMENT AND OPTIONAL ACCESSORIES EXPANSION TANK AUTOMATIC FILL VALVE Expanding water flows into expansion tank. Tank should For a safe, efficient operation, hot water system must be completely filled with water. Adding new water, when be correct size. Tank is filled with air. As water expands it compresses air in the tank to form air pressure cushion. - Page 25 17 - EQUIPMENT AND OPTIONAL ACCESSORIES ROLLOUT SWITCH BLOCKED VENT SAFETY SWITCH (FLAME ROLLOUT SAFETY SHUTOFF) (BLOCKED VENT SAFETY SHUTOFF) Rollout switch is temperature-sensitive fuse link device. Blocked vent safety switch is manual reset disc thermostat Located on boiler base just outside fire box. In event of with fixed setpoint (340°F (171°C)), and normally closed heat exchanger flueway blockage causing flame to roll contacts.
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Page 26: Appendix A - Control Module
APPENDIX A - CONTROL MODULE A.1 Installation Environment Considerations A.3 Adjusting Settings To discourage unauthorized changing of settings, procedure WARNING to enter adjustment mode is required. If you do not follow these instructions To enter adjustment mode, press UP, DOWN, and I buttons exactly, a fire or explosion may result simultaneously for three seconds. - Page 27 APPENDIX A - CONTROL MODULE A.5 Operation Control determines burner operation is required, module proceeds to start burner (see state codes list) Module continuously monitors boiler water temperature and and heats water in boiler until setpoint temperature is fires or shuts off burner based on this temperature data. achieved or thermostat is satisfied.
- Page 28 APPENDIX A - CONTROL MODULE A.6 Boiler High Limit Temperature Controller A.7 Troubleshooting • When water temperature reaches setpoint, controller • Following service procedures are provided as general ends heating cycle. guide. • When water temperature drops below setpoint minus •...
- Page 29 APPENDIX A - CONTROL MODULE Table 7 - Troubleshooting Error Codes Error Code Definition Consequence Number Flame current too low. Check for flame. Non critical alarm Flame sensed out of normal sequence (before opening or after closing gas valve). Soft lockout Gas valve relays welded.
- Page 30 APPENDIX A - CONTROL MODULE STEP 3: Check spark ignition circuit. — Adjust thermostat above room temperature. Disconnect ignition cable at SPARK terminal on module. — Verify ignition sequence at burner. — If spark does not stop after pilot lights, replace WARNING module.
- Page 31 NOTES 240011125 , Rev. C [07/22/2015]...
- Page 32 • This boiler is not used for any space heating • This boiler is part of a modular or multiple boiler system having a total input of 300,000 BTU/hr or greater. • This boiler is equipped with a tankless coil. UTICA BOILERS 2201 Dwyer Avenue Utica NY 13501 web site: www.ecrinternational.com...