AIR from Other Indoor Spaces

State Industries SHE 50 76N instruction manual Outdoor AIR Through TWO Horizontal Ducts

Page 14

Figure 7. The water heater shall have clearances of at least 1 inch (25 mm) from the sides and back and 6 inches (150 mm) from the front of the appliance. The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces that freely communicate with the outdoors and shall have a minimum free area of the following:

1.1 square inch per 3000 Btu/hr (700 mm2 per kW) of the total input rating of all appliances located in the enclosure, and

2.Not less than the sum of the areas of all vent connectors in space.

OUTDOOR AIR THROUGH TWO HORIZONTAL DUCTS

FIGURE 8.

Confined space shall be provided with two permanent horizontal ducts, one commencing within 12 inches (300 mm) of top and one commencing within 12 inches (300 mm) of bottom of enclosure. Horizontal ducts shall communicate directly with outdoors. See Figure 8.

Each duct opening shall have a minimum free area of 1 square inch per 2,000 Btu/hr (1100 mm2 per kW) of the aggregate input rating of all appliances installed in the enclosure.

When ducts are used, they shall be of the same cross sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall be not less than 3 inches.

OUTDOOR AIR THROUGH TWO VERTICAL DUCTS

The illustrations shown in this section of the manual are a reference for the openings that provide fresh air into confined spaces only.

Do not refer to these illustrations for the purpose of vent installation. See Installation of Vent System on pages 20-21 for complete venting installation instructions.

FIGURE 9.

The confined space shall be provided with two permanent vertical ducts, one commencing within 12 inches (300 mm) of the top and one commencing within 12 inches (300 mm) of the bottom of the

enclosure. The vertical ducts shall communicate directly with the outdoors. See Figure 9.

Each duct opening shall have a minimum free area of 1 square inch

per 4,000 Btu/hr (550 mm2 per kW) of the aggregate input rating of

all appliances installed in the enclosure.

FIGURE 9A.

The confined space shall be provided with two permanent openings, one commencing within 12 inches (300 mm) of the top and one commencing within 12 inches (300 mm) of the bottom of the

enclosure. See Figure 9A.

Each opening shall communicate directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an Unconfined Space.

Each opening shall have a minimum free area of 1 square inch per

1,000 Btu/hr (1100 mm2 per kW) of the aggregate input rating of all

appliances installed in the enclosure. Each opening shall not be less

than 100 square inches (645 cm2).

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Contents

Printed Power Vented GAS Models W/HOT Surface IgnitionWhenever maintenance adjustment or service is required 197421-003Important Definitions Safe INSTALLATION, USE and ServiceApprovals General Safety Information General Safety Information Table of Contents IntroductionSignage Installation of Carbon Monoxide DetectorsApproved Carbon Monoxide Detectors ExemptionsElbow Access Door Typical InstallationReplacement Parts and Deliming Products Condensate Hose and Drain PAN Mixing Valves Capacity and Gas and Electrical Characteristics ROUGH-IN-DIMENSIONS Rough-In-Dimensions Recovery capacity based on 90% thermal efficiencyLocating the NEW Water Heater Facts to Consider About the LocationInsulation Blankets Air REQUIREMENTsFresh Air Openings For Confined Spaces Unconfined SpaceConfined Space Outdoor Air Through Two OpeningsAIR from Other Indoor Spaces Outdoor AIR Through TWO Horizontal DuctsOutdoor AIR Through TWO Vertical Ducts Water Piping Installing the NEW Water HeaterChemical Vapor Corrosion Space Heating and Potable Water SystemValve and Pipe Insulation if supplied Temperature-Pressure Relief ValveThermal Expansion Gas Piping High Altitude InstallationContact qualified installer or service agency Per square inch 3.5 kPa Sediment TrapsFilling the Water Heater Vent Pipe Assembly VentingTermination Clearances Sidewall Power Vent Vent Pipe TerminationBreathing Hazard Carbon Monoxide Gas Planning the Vent SystemCondensate Vent Terminal INSTALLATION, Sidewall Blower Assembly InstallationInstallation of Vent System Than the marked circle Power Vent Wiring Schematic FigureChisel an opening approximately one half inch 1.3 cm larger Pointed in the correct position, see FigureInstallation of Vent SYSTEM, Sidewall Installation of Vertical Vent SystemVertical VAA Installations Recommended Vent Attenuation Assembly InstallationVent attenuation assembly Flexible tubing Instruction sheet Inch vent Vertical VAA Installations Vent Pipe Preparation Recommended BRUSH* Size for Primer Cement ApplicationsStep F Step BStep E Step GWhat to do if YOU Smell GAS Power Before ServicingDo not try to light the burner by hand Do not TRY to Light the Burner by HandDisplay Temperature RegulationTemperature Indicators Temperature Adjustment Buttons D E FOperational Conditions For Your InformationStart UP Conditions Periodic Maintenance Anode ROD InspectionTo Flush the Water Heater Storage Tank Temperature-Pressure Relief Valve TestKeep hands clear of drain Open the water heater drain valve to flush the storage tankService Leakage CheckpointsTroubleshooting Guidelines Trouble ShootingAssembly if damaged or defective Ensure the flame sensor is clean use ultra fine steelTurn off power to the water heater Unplug ignitor assembly plug from control. Check resistanceAssembly .2 If the reading taken is less than 100,000 Unplug the ignitor assembly plug from the control. CheckResistance of the black resistor wire between pins Check vent temperature limit switch if it is determinedTroubleshooting Guidelines Limited Warranty

State Industries SHE 50 76N instruction manual Outdoor AIR Through TWO Horizontal Ducts

1.1 square inch per 3000 Btu/hr (700 mm2 per kW) of the total input rating of all appliances located in the enclosure, and

2.Not less than the sum of the areas of all vent connectors in space.

OUTDOOR AIR THROUGH TWO HORIZONTAL DUCTS

OUTDOOR AIR THROUGH TWO VERTICAL DUCTS

AIR FROM OTHER INDOOR SPACES