GAS FIRED BOILERS FOR FORCED HOT WATER Utica Boilers, • P.O.
TABLE OF CONTENTS Safety Symbols & Warnings ........................................................................ Page 2 Installation Procedure .................................................................................. Page 3 Ventilation and Combustion Air .................................................................... Pages 4-6 Connecting Supply and Return Piping .......................................................... Pages 6-9 Vent Installation ..........................................
Safety Symbols The following defined symbols are used throughout this manual to notify the reader of potential hazards of varying risk levels. DANGER DANGER - Indicates an imminently hazardous situation which, if not avoided, WILL result in death or serious injury.
INST ALLA TION PR OCEDURE INSTALLA ALLATION PROCEDURE WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. 1. The installation must conform to the requirements of the authority having jurisdiction or, in the absence of such requirements, to the latest revision of the National Fuel Gas Code, ANSI Z223. (Available from the American Gas Association, 8501 E. Pleasant Valley Road, Cleveland, Ohio 44134).
VENTILA TION & COMB USTION AIR VENTILATION COMBUSTION WARNING: AIR OPENINGS TO COMBUSTION AREA MUST NOT BE OBSTRUCTED. BY FOLLOWING THE INSTRUCTIONS BELOW, ADEQUATE COMBUSTION AIR CAN BE MAINTAINED COMB USTION AIR REQ UIREMENTS COMBUSTION REQUIREMENTS MODEL NUMBER MGB MGB 38 MGB 50 MGB 75 MGB 100 MGB 125 MGB 150 MGB 175 MGB 200 MGB 225 MGB 275 MGB 300 (MINIMUM SQUARE INCHES OPENING) *UNCONFINED AREA **CONFINED AREA OUTSIDE INSIDE OUTSIDE COMBUSTION AIR COMBUSTION COMBUSTION VERTICAL HORIZONTAL AIR 1 SQ.
construction, air for combustion and ventilation must be obtained from outdoors or from spaces freely communicating with the outdoors. A permanent opening or openings having a total free area of not less than 1 square inch per 5,000 BTU per hour of total input rating of all appliances shall be provided. Ducts may be used to convey makeup air from the outdoors and shall have the same cross-sectional area of the openings to which they are connected. 4.
FIGURE 3 FIGURE 4 shall be permitted where the equipment has clearances of at least 1 inch from the sides, 1 inch from the back, and 6 inches from the front of the boiler. The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces (crawl or attic) that freely communicate with the outdoors.
BYPASS PIPING FIGURE 5 FIGURE 6 3. Hot water boilers installed above radiation level must be provided with a low water cutoff device. 4. When a boiler is connected to a heating system that utilizes multiple zoned circulators, each circulator must be supplied with a flow control valve to prevent gravity circulation. 5. Hot water boilers and system must be filled with water and maintained to a minimum pressure of 12 pounds per square inch. 6.
PRIMARY SECONDARY PIPING WITH BY PASS FIGURE 8 7. Installation using circulators is shown in figure 9 below. FIGURE 9 8. Installation using zone valves is shown in figure 10 on page 9. 9. For further piping information refer to the I=B=R Installation and Piping Guide.
FIGURE 10 WARNING: ALL INSTALLATIONS OF BOILERS AND VENTING SHOULD BE DONE ONLY BY A QUALIFIED EXPERT AND IN ACCORDANCE WITH THE APPROPRIATE UTICA BOILERS MANUAL. INSTALLING OR VENTING A BOILER OR ANY OTHER GAS APPLIANCE WITH IMPROPER METHODS OR MATERIALS MAY RESULT IN SERIOUS INJURY OR DEATH DUE TO FIRE OR TO ASPHYXIATION FROM POISONOUS GASES SUCH AS CARBON MONOXIDE WHICH IS ODORLESS AND INVISIBLE.
VENT SY STEM MODIFICA TION SYSTEM MODIFICATION When an existing boiler is removed from a common venting system, the common venting system is likely to be too large for the proper venting of the appliances remained connected to it.
VENT D AMPER INST ALLA TION AND INSTR UCTIONS DAMPER INSTALLA ALLATION INSTRUCTIONS INSTALLATION NOTE: Refer to Figure 11for steps 1 - 7. 1. Place Vent Damper on or as close to vent outlet of boiler as possible. See figure 12 below. 2. Remove Vent Damper Motor cover. 3. Remove locknut from connector at the end of the Damper wire harness. 4. Feed Damper and Damper wire harness connectors through bracket hole on Damper Motor frame. 5. Replace and tighten locknut onto Damper wire harness connector, 6.
CONNECTING GAS SERVICE 1. Connect gas service from meter to control assembly in accordance with ANSI Z223.1 and local codes or utility. A ground joint union should be installed for easy removal of gas control for servicing. A drip leg or trap must be installed at the bottom of a vertical section of piping at the inlet to the boiler. A pipe compound resistant to the action of liquified petroleum gases must be used on all threaded pipe connections.
ELECTRICAL WIRING SEE ADDENDUM " A" FOR WIRING DIAGRAMS AND COMPONENT CODING. Electrical wiring must conform with the National Electrical Code, ANSI/NFPA No. 70-1990 when installed in the United states, the CSA C22.1 Canadian Electrical Code, Part 1, when installed in Canada, and/or the local authority having jurisdiction. WARNING: 1.When an external electrical source is utilized, the boiler, when installed MUST BE electrically grounded in accordance with these requirements. 2.
LIGHTING PROCEDURE FOR BOILER WITH INTERMITTENT PIL OT SY STEMS PILO SYSTEMS STEMS.. FOR YOUR SAFETY READ BEFORE OPERATING. A. This appliance is equipped with an ignition device which automatically lights the pilot. Do not try to light the appliance by hand. B. Before operating, smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. CA UTION: WHAT TO DO IF YOU SMELL GAS CAUTION: * Do not try to light any appliance.
LIGHTING PROCEDURE FOR BOILER WITH CONTINUOUS PIL OT PILO FOR YOUR SAFETY READ BEFORE LIGHTING A. Read the warning at the beginning of the LIGHTING INSTRUCTIONS. (Page 13) B. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. C. Before lighting, smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. See page 14 for WHAT TO DO IF YOU SMELL GAS. D.
9. Push in gas control knob or reset button if so equipped, all the way in and hold. Immediately light the pilot with a match. Continue to hold the gas control knob or reset button in for about 1 minute after the pilot is lit. Release knob or button, and it will pop up back up. Pilot should remain lit. If it goes out, repeat steps 5 through 9. * If knob or button does not pop up when released, stop and immediately call a qualified service technician or your gas supplier.
GENERAL INSTRUCTIONS Before seasonal start-up, have a competent service agency check the boiler for soot and scale in the flues, clean the burners and check the gas input rate to maintain high operating efficiency. CA UTION: CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after service.
the mirror positioned above the burners, the flue gas passageways can be checked for soot or scale. The following procedure should be followed to clean the flue gas passageways: 1. Remove the burners from the combustion chamber by raising the burners up from the manifold orifices and pulling toward the front of the boiler. See figure 18 on page 17. 2. Disconnect the vent pipe from the draft hood. 3. Remove the top jacket panel. 4.
The burners and pilot should be checked for signs of corrosion, rust or scale buildup. The area around the boiler must be kept clear and free of combustible materials, gasoline and other flammable vapors and liquids. The free flow of combustion and ventilating air to the boiler and boiler room must not be restricted or blocked. It is recommended that a qualified service agency be employed to make an annual inspection of the boiler and heating system.
CHECK SAFETY CONTROL CIRCUIT, after burner adjustments are made, for satisfactory operation. 1. Pilot: With main burner operating, turn the pilot gas adjusting screw clockwise until pilot gas is turned off. See figures 14, 15, & 16 on pages 14 & 15. Within 90 seconds the main gas control should close, shutting off the gas to the main burner. 2. High limit control (figure 22 on page 19). Remove cover and note temperature setting. Decrease this setting to minimum and operate boiler.
MGB SERIES REPLA CEMENT P AR TS - PIL OTS REPLACEMENT PAR ARTS PILO ITEM PART # NUMBER 1 2 3 1520001 HW-009.01 PB-011.03 PB-011.04 DESCRIPTION THERMOCOUPLE Q309A SCREW #8-18X1/2 PILOT STDG Q380 NAT PILOT STDG Q380 LP OTY. 1 4 1 ITEM PART # NUMBER 4 5 6 DESCRIPTION OTY. 32622001 PILOT BRACKET ASSY 24V 1 (THIS INCLUDES #5 & 2 SCREWS) 3261401 PILOT SHIELD 1 MS-003.03 PILOT TUBE 1/4"X20.1/2" AL. 1 FIGURE 24 ITEM PART # NUMBER 1 2 32623601 PB-011.01 PB-011.02 DESCRIPTION OTY.
MGB SERIES REPLA CEMENT P AR TS - B ASE REPLACEMENT PAR ARTS BASE ITEM PART # NUMBER 1 2 3 4 5 3352401 MGB50 (1) MGB125 (3) MGB200 (4) 5611601 5611602 5611603 5611604 5611605 5611606 3261201 3262701 3262801 32621001 32621002 32621003 356-2-1.01 356-2-1.02 356-2-1.03 356-2-1.04 356-2-1.05 356-2-1.0\6 HW-005.01 DESCRIPTION OTY. BURNER TUBE 1.
MGB SERIES REPLA CEMENT P AR TS - J ACKETS REPLACEMENT PAR ARTS JA ITEM PART # NUMBER 1 2 3 4 5 31621501 31621502 31621503 31621504 31621505 31621506 31621507 3162704 3162706 3162707 3162708 3162501 3162502 3162503 3162504 3162505 3162506 3161101 3161102 3161103 3161104 3161105 3161106 3161201 3161202 3161203 3161204 3161205 3161206 DESCRIPTION OTY.
MGB SERIES REPLA CEMENT P AR TS REPLACEMENT PAR ARTS HEA T EX CHANGER HEAT EXCHANGER ITEM NO 1 2 3 4 P/N MGB50 (0) MGB150 (2) MGB250 (4) 5 6 7 8 9 MGB50 (2) MGB150 (6) MGB250 (10) DESCRIPTION 100-2-2.01 100-2-1.01 B-LEFT HAND SECTION B-CENTER SECTION MGB75 (1) MGB100 (1) MGB125 (2) MGB175 (3) MGB200 (3) MGB225 (4) MGB275 (5) MGB300 (5) 100-2-3.01 B-RIGHT SECTION HW-011.01 TIE ROD 1/4X11.1/2 MGB75 & 100 HW-011.03 TIE ROD 1/4X15.1/2 MGB125 & 150 HW-011.05 TIE ROD 1/4X19.1/2 MGB175 & 200 HW-011.
MGB SERIES REPLA CEMENT P AR TS REPLACEMENT PAR ARTS PIPING & CONTROLS ITEM NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 P/N 37513301 37413602 PB00702 PF-006.07 HW-016.03 PF-008.03 PF-006.01 375-1-14.01 37519501 1010002 VR-001.01 AQ-020.01 GA-001.00 PF-005.11 PF-002.04 EF03601 PB00604 DESCRIPTION WIRE ROLLOUT/SPILL 28" HARNESS IGN TO G/V 18" PILOT IGNITION CABLE 30" PIPE - NPL 1.1/4X4.1/2 NPT DRAIN - SHORT PIPE - TEE 1.1/4X3/4X1.1/4 PIPE - 1.
ATA TINGS AND D RA DA RATINGS ANE GAS OP NATURAL GAS AND PR OPANE PROP § § § ** † Boiler A.G.A. Heating I=B=R NetRating No. Input Capacity NetOutput Sq. Ft. HW o ∆ Natural Propane No. Recommended Gas Orifice Water of Air Cushion Orifice Drill Content Burners Tank Drill Size Size (Gals.) Btu/Hr. Btu/Hr. Btu/Hr @ 170 MGB 50 50,000 42,000 37,000 243 1 15 30 47 2.4 MGB 75 75,000 63,000 55,000 365 2 15 33 50 4.
MGB SERIES ANE GAS OP ATURAL GAS AND PR OPANE PROP DIMENSIONS FOR N NA Boiler Natural No. Gas Inlet MGB MGB MGB MGB MGB MGB MGB MGB MGB Pump size * 50 75 100 125 150 175 200 250 1/2" 1/2" 1/2" 1/2" 1/2" 3/4" 300 3/4" 1/2" 1/2" Dimensions A 11.1/8" 15 Supply & B 5.1/2" 7.1/2" C 4" 5" D 30.3/4" 30.3/4" E 36.1/4" 37.3/4" F 6" 6" 6.1/2" Return Tappings 1.1/4" 1.1/4" 1.1/4" 15 18.7/8" 18.7/8" 22.3/4" 22.3/4" 7.1/2" 6" 30.3/4" 37.1/4" 9.1/2" 9.1/2" 11.3/8" 11.3/8" 6" 7" 30.3/4" 30.
