Desa VSF30PT, LSFG20NT Air For Combustion And Ventilation, Check Gas Type, Installation Items

Models: VSF30PT LSFG20NT

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Installation

AIR FOR COMBUSTION

AND VENTILATION

Continued

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent open- ings: one within 12" (30.4 cm) of the ceiling and one within 12" (30.4 cm) 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- controlled 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.

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

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.

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

INSTALLATION ITEMS

Before installing heater, make sure you have the items listed below.

for propane/LP gas, external regulator (supplied by installer)

piping from gas supply (check local codes)

flex gas tubing

sealant (resistant to propane/LP gas)

equipment shutoff valve*

flex gas line with 3/8" NPT tap

ground joint union

sediment trap

tee joint

pipe wrench

for natural gas, test gauge connection*

*A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. The optional CSA design- certified equipment shutoff valve can be purchased from your dealer. See Accessories, page 21.

116307-01Cwww.desatech.com

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Desa VSF30PT, LSFG20NT installation manual Air For Combustion And Ventilation, Check Gas Type, Installation Items