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Models
MGC-8D
MGC-8DP
MGC-9D
MGC-9DP
MGC
HOT WATER BOILERS
With Hydrolevel Control
INSTALLATION, OPERATION &
MAINTENANCE MANUAL
C.S.A. Certified
For Natural Gas Or Propane
SERIES 3
GAS-FIRED
Tested For 50 psi.
ASME
Working Pressure
2201 Dwyer Avenue, Utica, NY 13501
Manufactured by:
ECR International Inc.
Tel. 800 253 7900
www.ecrinternational.com
PN 240013087 REV. A [09/01/2020]
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Table of Contents
Related Manuals for UTICA BOILERS MGC 3 Series
Summary of Contents for UTICA BOILERS MGC 3 Series
- Page 1 SERIES 3 GAS-FIRED HOT WATER BOILERS With Hydrolevel Control INSTALLATION, OPERATION & MAINTENANCE MANUAL Models MGC-8D MGC-8DP MGC-9D MGC-9DP C.S.A. Certified Tested For 50 psi. For Natural Gas Or Propane ASME Working Pressure Manufactured by: ECR International Inc. 2201 Dwyer Avenue, Utica, NY 13501 Tel.
- Page 2 ITEMS INCLUDED WITH YOUR BOILER Fully Assembled Boiler Vent Damper Pump (Optional) *Drain Valve *ASME Safety Relief *Fuse Link w/ *Tridicator *Nipple 3/4”x6-1/2 “ Valve Instruction Tag Includes Essential Documents and Warranty 11x17 Wire Diagrams Document Package *Circulator Harness * Items found in parts box included with your boiler. For Parts lists see manual 240013154 included with your boiler literature package.
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Page 3: Table Of Contents
TABLE OF CONTENTS 1 - Dimensions ................4 2 - Safety Symbols And Warnings ............5 3 - Locating The Boiler ..............7 4 - Connecting Supply And Return Piping..........9 5 - Ventilation & Combustion Air ............14 6 - Chimney And Vent Pipe Connection..........15 7 - Vent Damper Operation ..............17 8 - Gas Supply Piping ..............18 9 - Electrical Wiring .................19... -
Page 4: Dimensions
1 - DIMENSIONS 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. Figure 1 - Dimensions * Minimum acceptable height for Low Water Cutoff probe. PN 240013087 Rev. -
Page 5: Safety Symbols And Warnings
2 - SAFETY SYMBOLS AND WARNINGS FOR YOUR SAFETY READ BEFORE OPERATING Become familiar with symbols identifying potential hazards. DANGER This is the safety alert symbol. Symbol alerts you to potential personal injury hazards. Obey all safety messages following this symbol to avoid possible injury or death. - Page 6 2 - SAFETY SYMBOLS AND WARNINGS WARNING WARNING Fire, Explosion, Asphyxiation, Electrical shock Combustion chamber insulation in this product hazard! Flooding will result in damages such as contains ceramic fiber material. Ceramic fibers electrical problems, corrosion, inoperative parts, can be converted to cristobalite in very high mold and other unforeseen issues which can temperature applications.
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Page 7: Locating The Boiler
3 -LOCATING THE BOILER FOR INSTALLATION ON NON-COMBUSTIBLE WARNING FLOORS ONLY - For installation on combustible Fire hazard. Do not install boiler on combustible flooring special base shall be used. Please refer to flooring or carpeting. Failure to follow these (Combustible Floor Addendum) included in literature envelope provided with boiler and outlined in National instructions could result in death or serious injury. - Page 8 3 - LOCATING THE BOILER 3.3 Boiler Location Considerations • Horizontal run to chimney shall be as short as possible. • Ambient room temperature always above 32°F (0°C) to • System piping exposed to freezing conditions: Use prevent the potential of freezing. inhibited propylene glycol solutions certified by fluid manufacturer for use with closed water heating system.
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Page 9: Connecting Supply And Return Piping
4 - 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 WARNING LINE Burn and scald hazard. - Page 10 4 - CONNECTING SUPPLY AND RETURN PIPING 4.4 Water Treatment WARNING Manufacturer recommends a water analysis be done on • Poison hazard. Ethylene glycol is toxic. Do not water used to fill the system. Treatment may be required use ethylene glycol. based on the analysis results.
- Page 11 4 - 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 required Install discharge piping per these instructions.
- Page 12 4 - CONNECTING SUPPLY AND RETURN PIPING Figure 4 - Typical Hot Water Piping Figure 5 - Chilled Water Piping PN 240013087 Rev. A [09/30/2020]...
- Page 13 4 - 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 PN 240013087 Rev. A [09/30/2020]...
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Page 14: 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 15: Chimney And Vent Pipe Connection
6 - CHIMNEY AND VENT PIPE CONNECTION Boiler series is classified as a Category I. Vent WARNING installation shall be in accordance with “Venting of Boiler and venting installations shall be performed Equipment,” of the National Fuel Gas Code, ANSI by a qualified expert and in accordance with the Z223.1/NFPA 54, or “Venting Systems and Air Supply for Appliances,”... - Page 16 6 - CHIMNEY AND VENT PIPE CONNECTION Connecting The Vent Damper And Vent Connector WARNING Refer to Figure 1, page 4 for size and location of vent (flue Do not connect boiler to any portion of mechanical opening). draft system operating under positive pressure. NOTICE Removing Existing Boiler From Common Venting Damper blade on furnished vent damper has 1/2...
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Page 17: Vent Damper Operation
7 - 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 and deterioration from corrosion or other sources. -
Page 18: Gas Supply Piping
8 - 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 19: Electrical Wiring
9 - 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 20: Wiring Diagram
10 - WIRING DIAGRAM 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. PN 240013087 Rev. A [09/30/2020]... -
Page 21: General Instructions
11 -GENERAL INSTRUCTIONS WARNING Adding water to hot boiler may result in heat exchanger failure. Before filling boiler verify heat exchanger is not hot. Failure to follow these instructions could result in death or serious injury. FILLING SYSTEM WITH WATER •... -
Page 22: Lighting Instructions
12 - 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 13 - Automatic Gas Valve causing property damage, personal injury or loss of life. -
Page 23: Operating Your Boiler
13 - OPERATING YOUR BOILER AUTOMATIC GAS VALVE Figure 14 - 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 24 13 - OPERATING YOUR BOILER- SYSTEM START-UP CHECK THERMOSTAT OPERATION HI TEMP illuminates when boiler water temperature A. When set above temperature indicated on reaches high limit setting. Remains lit until water thermostat, boiler should ignite. temperature falls 10°. Prevents burner operation while this B.
- Page 25 13 - OPERATING YOUR BOILER Table 6 - Troubleshooting Burner Will Not Fire If installed with indirect water heater, insure switch controlling indirect water heater is properly No or Insufficient Domestic connected to I1-I2 (see wiring diagram). This insures domestic water calls are prioritized. Hot Water If I1-I2 is not used, turn Economy Feature OFF.
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Page 26: Service Hints
14 - 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 27: 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 23. and cleaned if necessary. To clean: SAFETY RELIEF VALVE •... -
Page 28: Boiler Ratings And Capacities
17 - BOILER RATINGS AND CAPACITIES 16 - BOILER RATINGS AND CAPACITIES Table 2 - Ratings and Capacities † NATURAL GAS † PROPANE GAS AFUE *HIGH *HIGH BOILER NET AHRI HEATING MODEL NET AHRI Input ALTITUDE INPUT ALTITUDE Heating INTERMITTENT RATING CAPACITY NUMBER... -
Page 29: Appendix A - Control Function
APPENDIX A - CONTROL FUNCTION ECONOMY TARGET When the Economy feature is WARNING active, the Fuel Smart HydroStat continually sets Burn and scald hazard. Do not add water until boiler target temperatures below the high limit setting has fully cooled. Failure to follow these instructions to maximize fuel efficiency. -
Page 30: Appendix A - Control Module
APPENDIX A - CONTROL MODULE If this LED is blinking and the burner is not firing: Intermittent Pilot Make sure the plug connection (or jumper, on Ignition System Checks boilers where vent damper plug is not used) is secure. STEP 1: Check ignition cable. Make sure the plug connection at the vent damper •... - Page 31 APPENDIX A - CONTROL MODULE STEP 4: Verify pilot and main burner light-off. Figure 16 - Troubleshooting Pilot Flame • Initiate call for heat. Turn thermostat above room temperature. Ignition sequence may be delayed by thermal purge until boiler water temperature is below 140°F (60°C) •...
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Page 32: Appendix A-1 - Vent Damper Harness
APPENDIX A-1 - VENT DAMPER HARNESS A.1 Vent Damper Harness - Molex Plugs • If boiler ignites: Go to section A.2 "Vent Damper Troubleshooting Guide". NOTE: WARNING Prior to replacing the damper, be sure Do Not negate the action of any existing safety the problem is not with wire connections orperational controls. -
Page 33: Appendix A-2 - Vent Damper Troubleshooting
APPENDIX A-2 - VENT DAMPER TROUBLESHOOTING A.2 Vent Damper Troubleshooting Guide WARNING Do Not negate the action of any existing safety orperational controls. Avoidance of these instructions could result in death or serious injury. When servicing controls, all wires must be Note labeled prior to disconnection. - Page 34 APPENDIX A-2 - VENT DAMPER TROUBLESHOOTING For troubleshooting only. Verify damper is in Note open position. Use service switch to keep damper in open position. Place jumper between 2 & 3. If appliance fires, remove jumper and plug receptacle back into damper controller plug.
- Page 35 PN 240013087 Rev. A [09/30/2020]...
- Page 36 IMPORTANT In accordance with Section 325 (f) (3) of the Energy Policy and Conservation Act, this boiler is equipped with a feature that saves energy by reducing the boiler water temperature as the heating load decreases. This feature is equipped with an override which is provided primarily to permit the use of an external energy management system that serves the same function.
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