UTICA BOILERS MGB50 Installation, Operation & Maintenance Manual
Mgb series cast iron gas fired boilers for forced hot water
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MODEL NUMBERS:
MGB50
MGB75
MGB100
MGB125
MGB150
MGB175
MGB200
MGB250
MGB300
An ISO 9001-2008 Certified Company
Cast Iron Gas Fired Boilers
For Forced Hot Water
INSTALLATION, OPERATION &
MAINTENANCE MANUAL
Utica Boilers
2201 Dwyer Avenue •
Utica • New York • 13504 • USA
www.ecrinternational.com
MGB SERIES
37611601
P/N
, Rev. C [05/2011]
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Table of Contents
Related Manuals for UTICA BOILERS MGB50
Summary of Contents for UTICA BOILERS MGB50
- Page 1 MGB SERIES Cast Iron Gas Fired Boilers For Forced Hot Water INSTALLATION, OPERATION & MAINTENANCE MANUAL MODEL NUMBERS: MGB50 MGB75 MGB100 MGB125 MGB150 MGB175 MGB200 MGB250 MGB300 Utica Boilers 2201 Dwyer Avenue • Utica • New York • 13504 • USA...
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Page 2: Table Of Contents
InstallatIon, operatIon and MaIntenance Manual KEEP THIS MANUAL NEAR BOILER Ratings & Data - Natural Gas & Propane Gas ... 3 RETAIN FOR FUTURE REFERENCE Dimensions ............4 Installation Procedure ..........5 Ventilation & Combustion Air ......... 6 IMPORTANT: Read the following instructions COMPLETELY before installing!! Connecting Supply and Return Piping ..... -
Page 3: Ratings & Data - Natural Gas & Propane Gas
ratIngs & data - natural gas & propane gas EXPLANATORY NOTES All boilers are design certified for installation on noncombustible floor. For installation on combustible floors use combustible floor kit. Recommended chimney height 20 feet. In special cases where conditions permit, chimney height may be reduced to 10 feet. -
Page 4: Dimensions
dIMensIons... -
Page 5: Installation Procedure
InstallatIon procedure FOR INSTALLATION ON NON-COMBUSTIBLE FLOORS WARNING ONLY - For installation on combustible flooring special base must be used. (See Replacement Parts Section.) Improper installation, adjustment, alteration, The boiler can not be installed on carpeting. Minimum service or maintenance can cause injury or clearances to combustible construction are: property damage. -
Page 6: Ventilation & Combustion Air
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 о... -
Page 7: Connecting Supply And Return Piping
connectIng supply and return pIpIng IMPORTANT: Circulators in the following illustrations are mounted on the system supply side, but mounting on the system return side is also acceptable practice. Figure 5 - Circulators Mounted on System Supply SEPARATOR The boiler, when used in connection with a refrigeration Bypass piping is an option which gives the ability to system, must be installed so the chilled medium is adjust the supply boiler water temperature to fit the... - Page 8 connectIng supply and return pIpIng Figure 6 - Bypass Piping Automatic 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 Figure 7 - Bypass Piping - Fixed Low Temp Only Automatic Mixing Valve...
- Page 9 connectIng supply and return pIpIng Figure 8 - Single Zone System With DHW Priority CH CIRCULATOR WATER INLET EXPANSION TANK CIRCULATOR BOILER PRIORITY ZONE PRESSURE BALL VALVE CIRCULATOR HOSE BIB REDUCER VALVE AIR SEPARATOR FLOW CONTROL SHUT-OFF ZONE VALVE CHECK VALVE VAVLE VALVE Figure 9 - Multi Zone System With Circulators And DHW Priority...
- Page 10 connectIng supply and return pIpIng Figure 10 - Multi Zone System With Zone Valves And DHW Priority (With Circulator) ZONE 4 ZONE 3 *USE FULL PORT ZONE VALVE. ZONE 2 CIRCULATOR ZONE 1 (PRIORITY ZONE) WATER INLET CIRCULATOR BOILER EXPANSION TANK PRESSURE BALL VALVE...
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Page 11: Vent Installation
Vent InstallatIon This boiler series is classified as a Category I. Vent WARNING installation shall be in accordance with "Venting of Equipment," of the National Fuel Gas Code, ANSI All installations of boilers and venting should Z223.1/NFPA 54, or "Venting Systems and Air Supply be done only by a qualified expert and in for Appliances,"... -
Page 12: Vent Damper Installation & Instructions
Vent daMper InstallatIon & InstructIons DAMPER INSTRUCTIONS DAMPER INSTALLATION NOTE: Refer to Figure 11 for steps 1-6. Figure 13 - Vent Damper Placement Figure 12 - Damper Motor Wiring Place Vent Damper on or as close to vent outlet of Verify only boiler is serviced by Vent Damper. -
Page 13: Connecting Gas Service
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 requirements: • Do not try to light any appliance. • USA - National Fuel gas Code, ANSI Z223.1/NFPA 54 •... -
Page 14: Electrical Section
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 15: Wiring Diagram - 24V Standing Pilot
WIrIng dIagraM - 24V standIng pIlot VR8200 VR8300... -
Page 16: Wiring Diagram - Intermittent Ignition
WIrIng dIagraM - InterMIttent IgnItIon... -
Page 17: Lighting Instructions
lIghtIng InstructIons Do not use this appliance if any part has been under WARNING water. Immediately call a qualified service technician to inspect appliance and to replace any part of control If you do not follow these instructions exactly, system and any gas control which has been under a fire or explosion may result, causing water. - Page 18 lIghtIng InstructIons LIGHTING PROCEDURE FOR BOILER WITH Figure 17 - Continuous Pilot CONTINUOUS PILOT For Your Safety, Read Before Lighting!! Read the warning at the beginning of " Lighting Instructions." This appliance has a pilot which must be lighted by hand.
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Page 19: Normal Sequence Of Operation
norMal sequence of operatIon On a call for heat, the thermostat will actuate, Figure 18 - Blocked Vent Safety Switch, Roll-out completing the circuit to the control. The Safety Switch completed circuit to the control will first activate the circulator and damper which will close an end switch inside the damper. - Page 20 general InstructIons When the cleaning process is complete, restore the boiler Figure 21 - Gas Burner Pilot components to their original position. Use IS-808 GE silicone (available from a distributor) to seal around the flue collector and boiler castings. 3/8” TO 1/2” IN FLAME A visual check of the main burner and pilot flames should IGNITION ELECTRODE...
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Page 21: Checking Gas Input Rate To Boiler
checkIng gas Input rate to boIler Gas input to the boiler can be adjusted by removing the Figure 22 - High Limit Control Location protective cap on the pressure regulator, and turning the screw clockwise to increase input and counterclockwise to decrease input. -
Page 22: Replacement Parts
replaceMent parts - base Item Item Description Part # Qty. Description Part # Qty. BURNER TUBE 1 1/2" - 50 SCREW ¼ - 20 X ½ SELF TAP HW-005.01 BURNER TUBE 1 1/2" - 75, 100 GAS VALVE VR8200H - 50 - 150 24V NAT VG-003.05 BURNER TUBE 1 1/2"... - Page 23 replaceMent parts - heat exchanger Item Part No. Description Qty. Item Part No. Description Qty. Nut 5 /16 - 18 Wislock 100-2-2.01 Left Hand Section HW06901 14605001 Tie Rod - ¼” x 7¼” (045) Push Nipple 2” Mach. (050) Tie Rod - ¼” x 11½” (070, 096) HW-011.01 Push Nipple 2”...
- Page 24 replaceMent parts - Jacket Item Item DESCRIPTION Part Number Qty. DESCRIPTION Part Number Qty. PANEL - TOP 50 31621501 PANEL - RIGHT 50-200 3162705 PANEL - RIGHT 225-300 3162703 PANEL - TOP 75 & 100 31621502 PANEL - REAR 50 3162601 PANEL - TOP 125 31621503...
- Page 25 replaceMent parts - pIlot SPARK PILOT Item Part No. Description Qty. 109007296 PILOT BRACKET ASSEMBLY HW-005.01 BRACKET SCREW 240007093 SPARK CABLE PILOT TUBING, 1/8" x 24" 14615005 PB-001.02 Natural Gas Q345A PILOT 240007096 LP Q345A Pilot * Included with #3 - Pilot Tube Assembly Kit (above) CONTINUOUS PILOT Item Part No.
- Page 26 replaceMent parts - pIpIng & controls ITEM DESCRIPTION QTY. WIRE ROLLOUT/SPILL 28" 37513301 HARNESS IGN TO G/V 18" 37413602 PILOT IGNITION CABLE 30" PB00702 PIPE - NPL 1.1/4X4.1/2 NPT PF-006.07 DRAIN - SHORT HW-016.03 PIPE - TEE 1.1/4X3/4X1.1/4 PF-008.03 PIPE - 1.1/4" CLOSE NPL PF-006.01 WIRE LOW VOLTAGE/DAMPER 375-1-14.01...
- Page 27 rollout & spIll sWItch Item # Description Part # Qty. TEMP. SENSOR BRACKET 3262001 CONTROL-FIXED TEMPERATURE AQ02101 THERMO (ROLLOUT SWITCH) SCREW - #6 X ¼ HEX HD HW06501 The rollout switch is located on the base and flue collector. NOTE: The quantities above are for each switch.
- Page 28 UTICA BOILERS 2201 Dwyer Avenue Utica NY 13504-4729 web site: www.ecrinternational.com...