Columbia MCB-50J Installation, Operation & Maintenance Manual

Mcb series ii cast iron gas fired boilers for forced hot water

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Table Of Contents

Models

MCB-50J

MCB-75J

MCB-100J

MCB-125J

MCB-150J

MCB-170J

MCB-200J

MCB 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

2201 Dwyer Avenue, Utica NY 13501

web site: www.ecrinternational.com

Tested For 100 psi

ASME

Working Pressure

P/N 240009038, Rev. B [04/2012]

Table of Contents

Summary of Contents for Columbia MCB-50J

Page 1 MCB SERIES II Cast Iron Gas Fired Boilers Models For Forced Hot Water MCB-50J MCB-75J INSTALLATION, OPERATION & MCB-100J MAINTENANCE MANUAL MCB-125J MCB-150J MCB-170J MCB-200J Tested For 100 psi C.S.A. Certiﬁ ed ASME For Natural Gas Or Propane Working Pressure 2201 Dwyer Avenue, Utica NY 13501 P/N 240009038, Rev.
Page 2 DIMENSIONS Figure 1 - Dimensions...
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 IMPORTANT: Read the following instructions 4 - Connecting Supply and Return Piping ....
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 UN-ACCEPTABLE DAMPER LOCATIONS CHIMNEY REFER TO DAMPER MANUFACTURER'S INSTALLATION INSTRUCTIONS FOR POSITION OF DAMPER CONTROL BOX...
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.
Page 17: 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 18: 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 19 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 20: 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 input. HIGH LIMIT •...
Page 21: Control Function
15 - CONTROL FUNCTION HI TEMP illuminates when boiler water temperature reaches high limit setting and remains lit until water temperature falls 10°. Prevents burner operation while this LED is on. LWCO Active Indicates low water cut-off (LWCO) function of limit control is active. When control is installed with a well, LED is on at all times when control is powered.
Page 22 NOTES...
Page 24 COLUMBIA BOILER COMPANY Main ofﬁ ces and factory Pittstown, PA...

This manual is also suitable for:

Mcb-75j Mcb-100j Mcb-125j Mcb-150j Mcb-170j Mcb-200j ... Show all