UTICA BOILERS MGB-50J Installation, Operation & Maintenance Manual

Cast iron gas fired boilers for forced hot water

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Models

MGB

50J

MGB-75J

MGB-100J

MGB-125J

MGB-150J

MGB-170J

MGB-200J

An ISO 9001-2008 Certified Company

MGB SERIES II

CAST IRON GAS FIRED BOILERS

FOR FORCED HOT WATER

INSTALLATION, OPERATION

& MAINTENANCE MANUAL

C.S.A. Certiﬁ ed

For Natural Gas Or Propane

Manufactured by:

ECR International, Inc.

2201 Dwyer Avenue, Utica NY 13501

web site: www.ecrinternational.com

Tested For 100 psi.

ASME

Working Pressure

2400009005

P/N

, Rev. C [09/2012]

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Summary of Contents for UTICA BOILERS MGB-50J

Page 1 MGB SERIES II CAST IRON GAS FIRED BOILERS FOR FORCED HOT WATER Models INSTALLATION, OPERATION MGB-75J MGB-100J & MAINTENANCE MANUAL MGB-125J MGB-150J MGB-170J MGB-200J C.S.A. Certiﬁ ed Tested For 100 psi. For Natural Gas Or Propane ASME Working Pressure Manufactured by: ECR International, Inc.
Page 2 DIMENSIONS Figure 1 - Dimensions 27" "A" 1¼" Supply 5½" "B" " "B " " " " " " " " " B B B B " " " 3½" 3½" " 3" 1¼" Return "D" "C" 4¼" 14" 2½" 4¼"...
Page 3: Table Of Contents
TABLE OF CONTENTS KEEP THIS MANUAL NEAR BOILER 1 - Ratings & Data - Natural Gas & Propane Gas ..4 RETAIN FOR FUTURE REFERENCE 2 - Installation Procedure ........5 3 - Ventilation & Combustion Air ......6 4 - Connecting Supply and Return Piping ....7 IMPORTANT: Read the following instructions COMPLETELY before installing!! 5 - Vent Installation ...........
Page 4: Ratings & Data - Natural Gas & Propane Gas
1 - RATINGS & DATA - NATURAL GAS & PROPANE GAS EXPLANATORY NOTES All boilers are design certiﬁ ed for installation on noncombustible ﬂ oor. For installation on combustible ﬂ oors use combustible ﬂ oor kit. Recommended chimney height 20 feet. In special cases where conditions permit, chimney height may be reduced to 10 feet.
Page 5: Installation Procedure
2 - INSTALLATION PROCEDURE WARNING WARNING Improper installation, adjustment, alteration, service Fire hazard. Do not install boiler on combustible or maintenance could result in death or serious ﬂ ooring or carpeting. Failure to follow these injury instructions could result in death or serious injury. FOR INSTALLATION ON NON-COMBUSTIBLE FLOORS Installation must conform to the requirements of the ONLY - For installation on combustible ﬂ...
Page 6: Ventilation & Combustion Air
3 - 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,” communicating directly or by ducts with outdoors. of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 or о...
Page 7: Connecting Supply And Return Piping
4 - CONNECTING SUPPLY AND RETURN PIPING WARNING Burn or Scald Hazard. Discharge line shall be installed to relief valve outlet connection to avoid burns, scalding, or water damage due to discharge of steam and/or hot water during operation. Discharge line shall: •...
Page 8 4 - CONNECTING SUPPLY AND RETURN PIPING Circulators in following illustrations are mounted on system supply side, mounting on system return side is also accept- able practice. Figure 3 - Circulators Mounted on Supply System, Boiler Used In Conﬁ guration with Chiller System. See Special Conditions, Page 9 Bypass piping is optional which gives ability to Boiler used in connection with refrigeration system,...
Page 9 4 - CONNECTING SUPPLY AND RETURN PIPING Figure 4 - Bypass Piping With Mixing Valve FROM SYSTEM TO SYSTEM WATER INLET EXPANSION TANK BOILER ALTERNATE CIRCULATOR LOCATION PRESSURE BALL VALVE AIR SEPARATOR CIRCULATOR REDUCER VALVE SHUT-OFF 3 WAY MIXING CHECK VALVE HOSE BIB VALVE VALVE...
Page 10 4 - CONNECTING SUPPLY AND RETURN PIPING Figure 6 - Single Zone System With DHW Figure 7 - Multi Zone System With Circulators And DHW...
Page 11 4 - CONNECTING SUPPLY AND RETURN PIPING Figure 8 - Multi Zone System With Zone Valves And DHW (With Circulator) Figure 9 - Multi Zone System With Zone Valves And DHW (With Zone Valve)
Page 12: Vent Installation
5 - VENT INSTALLATION Boiler series is classiﬁ ed 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 qualiﬁ ed expert and in accordance with the Z223.1/NFPA 54 or applicable provisions of the local building codes.
Page 13: Vent Damper Installation & Instructions
7 - VENT DAMPER INSTALLATION & INSTRUCTIONS DAMPER INSTRUCTIONS DAMPER INSTALLATION Follow Damper installation instructions provided with damper. See Figure 10. Figure 11 - Vent Damper Placement Figure 10 - Damper Motor Wiring Damper Motor UN-ACCEPTABLE DAMPER LOCATIONS CHIMNEY Damper Wire REFER TO DAMPER MANUFACTURER'S Haness INSTALLATION INSTRUCTIONS FOR...
Page 14: Connecting Gas Service
8 - CONNECTING GAS SERVICE General CAUTION • Use piping materials and joining methods acceptable WHAT TO DO IF YOU SMELL GAS to authority having jurisdiction. In absence of such • Do not try to light any appliance. requirements National Fuel gas Code, ANSI Z223.1/ NFPA 54 •...
Page 15: Electrical Section
9 - ELECTRICAL SECTION WARNING Electrical shock hazard. Turn OFF electrical power supply at service panel before making electrical connections. Failure to do so could result in death or serious injury. ELECTRICAL WIRING See wiring diagrams on the following two pages for details.
Page 16: Wiring Diagram
10 - WIRING DIAGRAM Figure 13 - Integrated High Limit Electronic Ignition Control (240008781) WARNING Modiﬁ cation, substitution or elimination of factory equipped, supplied or speciﬁ ed components may result in personal injury or loss of life. Inducer is not an option.
Page 17 10 - WIRING DIAGRAM Figure 14 - Integrated High Limit Electronic Ignition Control (240008781)
Page 18 10 - WIRING DIAGRAM Figure 15 - Integrated High Limit Electronic Ignition Control (240008781)
Page 19: Lighting Instructions
11 - LIGHTING INSTRUCTIONS OPERATING INSTRUCTIONS FOR INTERMITTENT WARNING PILOT SYSTEM If you do not follow these instructions STOP! Read the safety information to the left. exactly, a ﬁ re or explosion may result Set the thermostat to lowest setting. causing property damage, personal injury Turn off all electric power to the appliance.
Page 20: Normal Sequence Of Operation
12 - NORMAL SEQUENCE OF OPERATION Thermostat actuates on call for heat, Figure 17 - Blocked Vent Safety Switch, Roll-out completing circuit to control. Completed Safety Switch circuit to control will ﬁ rst activate circulator Intergral Draft and damper which will close end switch inside Hood damper.
Page 21 13 - GENERAL INSTRUCTIONS • Make visual inspection of main burner and pilot ﬂ ames Figure 18 - Gas Burner Flame at start of heating season and again in mid-season. Main burner ﬂ ame should have well deﬁ ned inner blue mantel with lighter blue outer mantel.
Page 22: Checking Gas Input Rate To Boiler
14 - CHECKING GAS INPUT RATE TO BOILER • Adjust gas input to boiler by removing protective cap on Figure 21 - High Limit Control Location pressure regulator and turning screw clockwise increase input and counterclockwise to decrease High Limit and input.
Page 23: 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 ﬁ...
Page 24 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 ﬁ res or shuts off burner based on this temperature data. achieved or thermostat is satisﬁ...
Page 25 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 26 APPENDIX A - CONTROL MODULE Table 7 - Troubleshooting Error Codes Error Code Deﬁ nition Consequence Number Flame current too low. Check for ﬂ ame. Non critical alarm Flame sensed out of normal sequence (before opening or after closing gas valve). Soft lockout Gas valve relays welded.
Page 27 APPENDIX A - CONTROL MODULE STEP 3: Check spark ignition circuit. • Recheck ignition sequence as follows. Disconnect ignition cable at SPARK terminal on module. — Reconnect main valve wire. WARNING — Adjust thermostat above room temperature. — Verify ignition sequence at burner. Electrical shock hazard.
Page 28 UTICA BOILERS 2201 Dwyer Avenue Utica NY 13501 web site: www.ecrinternational.com...

This manual is also suitable for:

Mgb-75j Mgb-125j Mgb-150j Mgb-170j Mgb-200j Mgb-100j

UTICA BOILERS MGB-50J Installation, Operation & Maintenance Manual

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