Wing Enterprises IOMWDF-1 Section XII Recirculation, For Canadian Installations only

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FOR CANADIAN INSTALLATIONS ONLY

1.All installations must conform with local building codes, or, in the absence of local codes, with current CAN/CGA-B149- Installation Codes For Gas Burning Appliances and Equipment.

2.All electrical connections must be in accordance with Canadian Electrical Code, Part 1, CSA Standard C22.1.

All electrical connections must conform to the current edition of the Canadian Electrical Code, Part 1 CSA Standard C22.1 and applicable local codes.

SECTION XII - RECIRCULATION

WARNING: On heaters, which recirculate room air, outside ventilation air must be provided in accodance with the information shown on the heater nameplate.

Recirculation of room air may be hazardous in the pres- ence of:

flammable solids, liquids and gases

explosive materials such as grain dust, coal dust, gunpowder, etc.

substances such as refrigerants or aerosols which may become toxic when exposed to heat or flame.

Recirculation is not recommended in uninsulated buildings where outside temperatures fall below 32°F (0°C).

Excessive recirculation or insufficient ventilation air, which results in inadequate dilution of combustion products gen- erated by the heater, may create hazardous concentrations of carbon monoxide, nitrogen dioxide, and other combus- tion products in the heated space.

If gas fork trucks or other fossil fuel powered equipment are utilized in the conditioned area, additional ventilation requirements for the facility must be addressed separately.

The heater inlet shall be located in accordance with appli- cable building code provisions for ventilation air.

Field constructed intake accessories should be properly designed to minimize the entry of snow and rain.

All ventilation air to the heater shall be ducted directly from the outdoors.

If in doubt regarding the application, consult the heater manufacturer.

ETL labeled heaters must be equipped with a control sys- tem and an air measuring station provided by the heater manufacturer and installed on the return air damper or duct.

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Contents IOMWDF-1 Section I Forward Section II General InformationSection III Installation Location of AccessoriesLocating the Unit Field Wiring and Remote Control Installation Locating Temperature ControlsElectrical Connections Field PipingSection IV PRE START-UP Pre Start-Up Suggested Tools and InstrumentsSetting Burner Setting Main FlameSafety Controls Check Section V Unit START-UPSuggested Control Settings Section VI Unit ShutdownExtended Shutdown Emergency Shutdown only Section VII Troubleshooting System without Pilot Symptom Cause RemedyValve does not open, replace 001004 001003 Troubleshooting Guide Series 14 Discharge Temperature ControlSymptom Possible Cause Field Test Remedy Fire Electronics Remote Temperature Consult factory for other Series 44 Room Temperature Control Series 44 Room Temperature Control Check Safety Shutdown Performance Maintenance Schedule Speed Temperature Cleanliness Interval Lubrication Instructions Manufacturer Bearing TypeAir Filters Belt Tension and Adjustment 4.68.6 GasketsInspection and Maintenance of Gas Ports Section IX Maxon NP-I Airlo BurnersHigh Fire Manifold Adjustments Low Fire or Bypass AdjustmentsMR212 Valve Preliminary Circuit Analysis System SectionSection XI Replacement Parts For Canadian Installations only Section XII Recirculation