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Heat Wise SU-3 Manual

Gas burner 200,000 btu/h to 400,000 btu/h
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The burner shall be used only with NATURAL GAS specified on the nameplate .
Warning: If the following instructions are not followed exactly, a fire or
explosion may result, causing property damage, personal injury or death.
• Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
• Do not try to light any appliance.
• Do not touch any electrical appliance.
• Do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire department.
• A qualified installer, service agency or the gas supplier must perform installation and
service.
• All installations must be made in accordance with all state and local codes, which may
differ from instructions in this manual.
• The installer should inform and demonstrate to the user the correct operation and
maintenance of the appliance.
• The installer shall also inform the user of hazards of flammable liquids and vapors and
shall remove such liquids and vapors from the vicinity of the burner.
• The installation adjustment data trap (or label) supplied shall be filled in and affixed to the
burner or the covered appliance.
These instructions should be affixed to the burner or adjacent to the heating appliance.
Massachusetts Plumbing Board G1-0903-40:09/03/2004
1528 Rocky Point Road, Middle Island, NY 11953
Heat Wise Inc.
Manual for: SU-3 Gas Burner
200,000 BTU/H to 400,000 BTU/H
- WHAT TO DO IF YOU SMELL GAS? –
NY City MEA 363-99-E
Manufactured by Heat Wise, Inc.
1
rev 2004-1

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Summary of Contents for Heat Wise SU-3

  • Page 1 Heat Wise Inc. Manual for: SU-3 Gas Burner 200,000 BTU/H to 400,000 BTU/H The burner shall be used only with NATURAL GAS specified on the nameplate . Warning: If the following instructions are not followed exactly, a fire or explosion may result, causing property damage, personal injury or death.
  • Page 2 The system uses a remote ignition system using a separate Ignition Transformer. The SU-3 Gas Burner is a fully automatic, flame retention burner and is suitable for combustion of natural gas. Changing orifices alters the firing rate. The combustion air can be adjusted for...

  • Page 3: Air For Combustion

    CONVERTING OIL TO GAS Before attempting the gas conversion, check to insure the heating system is properly sized for the total heating demand and the entire system is in good operating condition, including the fire chamber and flue passages. It is important to allow adequate clearance around the appliance for servicing and proper operation of the burner.

  • Page 4: Chimney Requirements

    CHIMNEY REQUIREMENTS The chimney should extend at least 3’ above a flat roof or the highest roof ridge (see Fig. 2) and be free in a radius of 30’ of objects such as tree limbs, other buildings, etc, which may cause a down draft.

  • Page 5: Installing The Burner

    VENT PIPE AND DRAFT HOOD SIZES Refer to Chart 3 to properly size the flue pipe. If the flue pipe exceeds 10’ in length (including elbows), use the next larger diameter flue pipe and draft hood. If a draft regulator is required, any Canadian Standards Association (CSA) or Underwriter’s Laboratory (UL) listed double swing draft regulator must be used.
  • Page 6 Tighten all the nuts equally. Make sure that the allen screws are backed out, to allow enough clearance. Then, insert the SU-3 gas burner into the boiler. Once the burner is inserted and pushed all the way forward, tighten the allen screw on the top of the flange.

  • Page 7: Gas Piping To Burner

    (as shown or anywhere between the gas valve and the shut off value). Note: The manual shut off valve and tapping are NOT part of the SU-3 Gas Burner. Please make sure you conform to local and state codes.

  • Page 8: Electric Wiring

    Fig. 3 Gas Burner Piping* *The dotted lines represent field installation. INSTALLING THE CHIMNEY LINER, DRAFT DIVERTER AND VENT PIPE Some utilities require new chimney liners for all gas installations. Use a corrosion resistant chimney liner (approved for gas service) of the same size as the vent pipe. Use an CSA or U.L.
  • Page 9 Fig. 4 Wiring Diagram for Fenwal 2466H SEQUENCE OF OPERATIONS Fenwal 2466H 036-111 All limits are closed and 120-volt power is on for the burner. T-T terminals are closed (24-volt power carrying lines; do not power this.) Sometimes, T-T terminals are jumped with a wire nut for burners not set for post-purge. Burner motor starts and pre-purge begins Burner housing pressurizes and proves air flow - contacts closed.
  • Page 10 Fig. 5 Wiring Diagram for Honeywell S89F SEQUENCE OF OPERATIONS Honeywell S89F Limits close. Blower motor starts as the 24 Volt transformer powers the airflow switch. Power from the airflow switch to the S89F control initiates 34 second pre-purge. At the end of the pre-purge, the spark is energized for 4 seconds. At the same time, the 24 Volt transformer powers the gas valve, allowing the fuel to flow.
  • Page 11 400,000 ADJUSTING THE FIRING RATE By adjusting the head and manifold pressure, the SU-3 can be adjusted for various firing rates (200,000 to 400,000 BTU). The retention head is 2.2” inside the tube when the marking reads ‘0’. There is a full ½” movement of the retention disk to move forward (to increase secondary air) or backwards (to decrease secondary air).
  • Page 12 Fig. 6 Adjusting the Firing Rate Chart 6: Firing Rates at Various Settings Manifold Pressure = 1.0” Manifold Pressure = 2.75” Manifold Pressure = 3.5” Head Setting Air Shutter KBTU Head Setting Air Shutter KBTU Head Setting Air Shutter KBTU 0.18 10.01 16.74...

  • Page 13: Lighting Instructions

    LIGHTING INSTRUCTIONS To light the SU-3 Gas Burner Reset, if Flame Lockout Occurs 1. Set the thermostat to the lowest 1. Turn the thermostat off, or turn the main power off temperature 2. Wait five minutes 2. The control knob on the gas 3.

  • Page 14: Troubleshooting

    Trouble shooting: There are three factors to operate the gas burner properly: 1. Electricity {(main Power 120V/60 Hz /1 Ph)( secondary 24V)} 2. Gas flow (Incoming pressure should be 10” w.c. with proper gas line without pressure drop during burner operation). 3.
  • Page 15 ITEM PART PART # ITEM PART PART # Blast Tube 1175-1701 Cover Plate - Air 1188-7401 Regulation Flange Gasket 10195-1 Cover Plate - Nozzle 1188-7302 Line Adjustable Flange 10195 Scale - Nozzle Line 1188-8501 Front piece - Housing Scale - Air Regulation 1188-7801 Rear piece –...

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