Desa 10542 Installation, Ventilation AIR, Check GAS Type, Ventilation Air From Inside Building

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AIR FOR COMBUSTION

AND VENTILATION

Continued

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining un- confined space. When ventilating to an adjoining unconfined space, you must provide two perma- nent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 2). You can also remove door into adjoining room (see option 3, Figure 2). Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent open- ings: one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces. Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

IMPORTANT: Do not provide openings for inlet or outlet air into attic if attic has a thermostat-con- trolled power vent. Heated air entering the attic will activate the power vent.

 

Outlet

Ventilated

 

Attic

 

Air

 

 

Outlet

 

 

Air

 

To Attic

 

 

 

 

To

 

 

Crawl

Inlet

 

Space

 

 

Air

 

 

 

Inlet Air

Ventilated

 

Crawl Space

 

 

Figure 3 - Ventilation Air from Outdoors

INSTALLATION

NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your pri- mary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source.

WARNING: A qualified ser- vice person must install heater. Follow all local codes.

Ventilation

 

Grills

Or

into Adjoining

Remove

Room,

Door into

Option 1

Adjoining

 

Room,

 

Option 3

12"

Ventilation Grills

Into Adjoining Room,

Option 2

CHECK GAS TYPE

Use only the correct type of gas (natural or pro- pane/LP). If your gas supply is not the correct gas type, do not install heater. Call dealer where you bought heater for proper type heater.

12"

WARNING: This appliance is equipped for (natural or pro- pane/LP) gas. Field conversion is not permitted.

Figure 2 - Ventilation Air from Inside

Building

113680-01A

www.desatech.com

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Contents What to do if YOU Smell GAS Table of Contents Safety Information Unpacking Product Features Local Codes Product IdentificationConfined and Unconfined Space AIR for Combustion VentilationProviding Adequate Ventilation Unusually Tight ConstructionDetermining if You Have a Confined or Unconfined Space Determining FRESH-AIR Flow for Heater LocationVentilation Air From Inside Building InstallationVentilation AIR Check GAS TypeLocating Heater Installation ItemsInstalling Heater to Wall Attaching To Wall Anchor Method 30,000 Btu/Hr Model20,000 Btu/Hr Model 10,000 Btu/Hr ModelPlacing Heater On Mounting Bracket Installing Bottom Mounting ScrewsMounting Base Feet to Floor Where required by local code Mounting Heater to Floor with Optional Floor KITTypical Inlet Pipe Diameters Connecting to GAS SupplyPropane/LP Natural GasTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Pressure Testing Heater GAS ConnectionsOperating Heater Manual Control Models For Your Safety Read Before LightingLighting Instructions Shutting Off Burner Only pilot stays lit Manual Lighting ProcedureTo Turn OFF GAS To Appliance Shutting Off HeaterThermostat Control Operation Pilot Flame Pattern Inpecting HeaterBurner Flame Pattern Cabinet Cleaning MaintenanceODS/PILOT and Burner Burner Pilot AIR InletObserved Problem Possible Cause Remedy TroubleshootingReplace burner orifice See Cleaning and Mainte Statement above Gas leak. See Warning10543 Specifications10548 10546 10542/10544 10549 10547 10545Parts Under Warranty Service HintsTechnical Service Service Publications Replacement Parts10,000 BTU/HR Manual Control Models 10542 Illustrated Parts Breakdown10,000 BTU/HR Manual Control Models Parts List19-1 19-2 19-113 10,000, 20,000, and 30,000 BTU/HR Termostat Models Base KIT GA4550 AccessoriesEquipment Shutoff Valve GA5010 FAN Kits GA3210TParts Centrals Keep this Warranty Warranty InformationLimited Warranty VENT-FREE Residential GAS Heaters