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Heat Wise SU-3 Manual

199,000 btu/h to 400,000 btu/h, 300,000 btu/h to 550,000 btu/h
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SU-3 199,000 BTU/H to 400,000 BTU/H
SU-4 300,000 BTU/H to 550,000 BTU/H
The burner shall be used only with NATURAL GAS or PROPANE .
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 telephone in your building.
•
Immediately call your gas supplier from an outside 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.
•
At least once per year, a qualified service agency needs to contracted for other than routine
maintenance.
•
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.
Heat Wise, Inc.
Manual for:
- WHAT TO DO IF YOU SMELL GAS? –
Massachusetts Plumbing Board
G3-0904-16
Manufactured by Heat Wise, Inc.
28 Industrial Blvd. Unit I
Medford, NY 11763
1
rev 2007-1

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  • Page 1 Heat Wise, Inc. Manual for: SU-3 199,000 BTU/H to 400,000 BTU/H SU-4 300,000 BTU/H to 550,000 BTU/H The burner shall be used only with NATURAL GAS or PROPANE . Warning: If the following instructions are not followed exactly, a fire or explosion may result, causing property damage, personal injury or death.
  • Page 2 Check the model number on the label located on the cover of the control box for the specifications of the burner. Note: Gas trains supplied with the SU-3 and SU-4 are for specific firing ranges, as covered by various codes and listing agencies. Firing this burner above the allowed firing rate will void the warranty, and may result in a fire or explosion, causing property damage, personal injury or death.
  • Page 3 • Fuel: The SU-3 and SU-4 Burners will fire natural gas or LP. The maximum inlet pressure at test port is 10” W.C. for both natural and LP gas. • Length of Flame Tube: 5 ¼” or 14” (special order) Firing System: The burner operates as ON –...

  • Page 4: Installing The Burner

    Fig. 1 Electrode and Flame Sensor Positioning 1/8” Spark Gap 3/16” Projection of ceramic past retention plate 1” 0.65” Installing the Burner If the burner being installed is a conversion burner, use a prefabricated chamber or build a firing chamber that can withstand 2000 F.

  • Page 5: Chimney Requirements

    Picture 5: BODY FLANGE: First, install the gasket and boiler flange to the boiler. For heat exchangers with a diamond stud pattern, one allen screw on the flange should be on the top, slightly to the left of the 12 o’clock stud. The second screw should be on the right (slightly above the 3 o’clock position stud).

  • Page 6: Gas Service And Pipe Capacity

    Gas Service and Pipe Capacity Before connecting the burner to the gas supply, insure that the gas pipes and service meter are large enough to permit the additional load of the gas burner (see Table 3). Table 3: Pipe Capacity Table*( x 1,000 BTU’s) Nominal diameter of pipe in inches Pipe Length** 1”...
  • Page 7 Fig. 3 Gas Burner Piping* *The dotted lines represent field installation. Adjusting the Pressure Switches Figure 4 demonstrates the possible positioning of pressure switches on the SU-4 gas train. Use the figures in Table 4 to approximate the settings. Fig. 4 Sample Gas Train #1 The high and low gas pressure switches must be set during installation (refer to Table 3 and Table 4).
  • Page 8 Pressure drop across Honeywell valve=1.0” HPS = 1.5*2.7”=4.0” LPS = (2.7”/2) + 1.0”=2.35” For other valves, refer to the manual for that specific valve for the pressure drop. Warning: After the burner has been adjusted so that the burner is operating properly, the pressure switches must be readjusted.
  • Page 9 Chimney Liner, Draft Regulator 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 a double swing draft regulator, listed by CSA or U.L. When the burner is used as a conversion burner, draft over fire should be maintained between –0.02 and +0.01 “W.C.
  • Page 10 Table 5: Firing Rates at Various Settings, Natural Gas for SU-3 Manifold Pressure = 1.0” Manifold Pressure = 1.7” Manifold Pressure = 2.7” Head Setting # Air Shutter # Head Setting # Air Shutter # Head Setting # Air Shutter # 0.18...

  • Page 11: Electric Wiring

    Table 8 Firing Rates at Various Head Settings, Propane (LP) for SU-4 Manifold Pressure = 1.8” W.C Manifold Pressure = 2.5” W.C Manifold Pressure = 3.0” W.C Head Setting # Air Shutter # Head Setting # Air Shutter # Head Setting # Air Shutter # 6.74 11.73 15.29...
  • Page 13 Fig. 6 Honeywell S89F control Fig. 7 Fenwal 2466H Optional Valve-on Delay/Motor-off Delay control *Below 400,000 BTU ONLY* Not recommended for Propane (LP) applications SEQUENCE OF OPERATIONS: Fenwal 2466H 036-111 SEQUENCE OF OPERATIONS All limits are closed and 120-volt power is on for the burner. Honeywell S89F T-T terminals are closed (24-volt power carrying lines;...
  • Page 14 Fig. 8 Wiring the SU-3/SU-4 Fig. 9 Wiring the SU-3/SU4 as a with a switching relay two-fuel burner (Natural Gas and LP) with two separate gas trains The manual shut-off valve downstream of the fuel not being used must always be closed. When switching fuels, the burner should be shut-off by putting the selector switch in the center position.

  • Page 15: Air Adjustment

    Note: if any adjustments are made, it is important to recheck the firing rate and combustion analysis. Lighting Istructions To light the SU-3/SU-4 Gas Burner Reset, if Flame Lockout Occurs Set the thermostat to the lowest temperature Turn the thermostat off, or turn the main power off...

  • Page 16: Burner Operation

    Burner Operation Before turning the burner on, check for gas supply leaks. Check the wiring diagrams; install manometers before and after the gas valve. Keep the observation port of the boiler or furnace open. Follow the instructions on the nameplate of the burner to turn it on. Follow the sequence of operations for the control (see page 9).
  • Page 17 Gas Input to Burner in ft /hr * Seconds Seconds 1/2 ft 1 ft 2 ft 2 ft 5 ft * For BTU/hr Natural gas multiply by 1000 BTU/hr; for Propane multiply by 2500 ____ 5. If the firing manifold has been readjusted, redo steps 2 and 4 ____ 6.Check that the draft over-fire is positive BURNER OPERATION: Record the Readings at Steady State...
  • Page 18 PART # PART PART # ITEM ITEM Blast Tube 1175-1701 Scale - Air Regulation 1188-7801 Adjustable Flange Gasket 10195-1 24 Volt Transformer 2440VA Fixed Flange Gasket 1173-9801 Adjustable Flange 10195 Safety Control 2466H or S89F Fixed Flange 1190-4001 Front piece - Housing Plastic Cover Plate 11850001 Rear piece –...
  • Page 19 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 20 Flange – SU-3 and SU-4...

This manual is also suitable for:

Su-4Su-4anSu-4nSu-4p

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