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Heat Wise SU-2A Manual

Gas burner
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PNA Manual for: SU-2A Gas Burner
The burner shall be used only with NATURAL GAS or PROPANE (LPG).
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 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.
• 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.
• A combustion analyzer must be used to commission or adjust the burner.
These instructions should be affixed to the burner or adjacent to the heating appliance
New York City Dept. of Buildings MEA # 382-03-E
28 Industrial Blvd. Unit I, Medford NY 11763
50,000 BTU/H to 250,000 BTU/H
WHAT TO DO IF YOU SMELL GAS
-
Massachusetts Plumbing Board # G3-1107-132
Manufactured by Heat Wise, Inc.
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Summary of Contents for Heat Wise SU-2A

  • Page 1 PNA Manual for: SU-2A Gas Burner 50,000 BTU/H to 250,000 BTU/H The burner shall be used only with NATURAL GAS or PROPANE (LPG). Warning: If the following instructions are not followed exactly, a fire or explosion may result, causing property damage, personal injury or death.

  • Page 2: Burner Description

    - Gas Valve: ½” Honeywell VR8205 BURNER DESCRIPTION The SU-2A Gas Burner is a fully automatic, flame retention burner and is suitable for combustion of natural gas or LPG (propane). Changing orifices alters the firing rate. The gas pressure may be adjusted on the gas valve and can be used to convert a natural gas unit to LPG (or vice versa).

  • Page 3: 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 4: Mounting The Burner

    • Install the provided O-ring on the blast tube. Picture 3: Holding Screw Then, insert the SU-2A gas burner completely into the boiler. Once the burner is inserted and pushed all the way forward, insert the holding...
  • Page 5 2. A 1/8” plugged NPT tapping for gas pressure measurement preferably on the manual shut off valve (as shown or anywhere between the gas valve and the shut off valve). Note: The manual shut-off valve and tapping are NOT part of the SU-2A Gas Burner. Please make sure you conform to local and state codes.

  • Page 6: Orifice Installation

    Fig. 3 Gas Burner Piping* *The dotted lines represent field installation. ORIFICE INSTALLATION All burners are equipped with an orifice set at the appropriate firing rate. It sometimes may be necessary to drill the orifice. Drilling the orifice increases the firing rate. To drill the orifice, first open the stainless steel union and then unscrew the orifice from inside the union.

  • Page 7: Burner Settings

    BURNER SETTINGS Refer to the below charts for the proper settings for the SU-2A burner and PNA boiler. Note: a pressure change at the valve, and, in some cases, an orifice change, is all that is required to convert a natural gas burner to a LPG (propane) unit and vice-versa.
  • Page 8 ELECTRIC WIRING These gas burners are manufactured for use with 120 volt, 60 cycle, single-phase electric current. The installation must comply and be grounded in accordance with the National Board of Fire Underwriters and National Electric Code ANSI/NFPA No. 70-1987 (or the latest addition). All applicable local codes should be followed as well.

  • Page 9: Burner Operation

    LIGHTING INSTRUCTIONS To light the SU-2A 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 10: Troubleshooting

    When commissioning the burner, make sure the gas control knob is in the ”ON” position. Install monometers at the inlet pressure tap and outlet pressure tap. Note: When checking manifold pressure, do not subtract burner housing pressure during valve-on delay. Record the static incoming gas pressure.
  • Page 11 COMMISSIONING/TROUBLESHOOTING CHECKLIST There are four factors that are needed to operate the gas burner: ____ 1. Combustion Air ____ 2. Electricity ____ 3. Gas Flow ____ 4. Combustion Analysis 1. Combustion Air Check the air coming into the area where the burner is located. ____ 1.
  • Page 12 ____ 4. Clock the gas meter and check that the correct firing rate is achieved. If the firing rate is low, the gas pressure should be increased slightly. If the firing rate is too high then the gas pressure should be decreased.
  • Page 13 PART PART # PART PART # ITEM ITEM Blast Tube 11728410 Cover Plate - Air 11887001 Regulation Flange Gasket 10195-1 Cover Plate - Nozzle 11887301 Line Adjustable Flange 10195 Scale - Nozzle Line 11888101 Front piece - Housing Scale - Air Regulation 11887801 Rear piece –...
  • Page 14 Maintenance Instructions: TO BE FIXED/ATTACHED NEAR BURNER Once a year, a qualified service agency needs to be contracted for other than routine maintenance. 1. The blower motor is the only moving part. It does not require lubrication, since the ball bearings have been permanently lubricated.
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