Desa Tech 28, 18, B installation manual Ventilation Air From Outdoors, Ventilation Air from Outdoors

Page 8

FRESH 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 openings: 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.

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.

Ventilated

Outlet Attic

Air

Outlet
Air	To Attic
	To Attic

To

Crawl

Space

Inlet

Air

Inlet Air		Ventilated
		Crawl Space
		Crawl Space

Figure 3 - Ventilation Air from Outdoors

8

101808

Image 8

Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASContents Safety Information001 Product Identification Local CodesUnpacking ProductFresh AIR For CombustionVentilation Providing Adequate VentilationDetermining if You Have a Confined or Unconfined Space Fresh AIR for Combustion and VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Ventilation Air from OutdoorsInstalling To Wall Installation ItemsCheck GAS Type Locating HeaterAttaching Thermostat Sensing Bulb Thermostat Sensing BulbLocating Thermostat Sensing Bulb Installing Heater to Wall Mounting BracketRemoving Front Panel Of Heater Methods For Attaching Mounting Bracket To WallMarking Screw Locations Attaching Mounting Bracket To WallInstalling Bottom Mounting Screws Placing Heater On Mounting BracketConnecting to GAS Supply Pressure Testing GAS Supply Piping System Checking GASConnections Servicing. Correct all leaks at oncePressure Testing Heater GAS Connections CheckingFor Your Safety Read Before Lighting Operating HeaterPilot Shutting Off Heater Shutting Off Burner Only pilot stays litInspecting Burner Pilot Flame PatternBurner Flame Pattern Correct Burner Flame PatternTrouble Shooting ODS/PILOT and BurnerCabinet Air PassagewaysCleaning and Mainte TroubleTROUBLE- Shooting Ing statement at Top18,000 Btu/Hr 28,000 Btu/Hr Models Technical ServiceService Hints Service Publications Replacement Parts Parts Under WarrantyParts Not Under Warranty CentralsODS/Pilot Assembly Parts List CGN18TB CGN28TB DescriptionValve GA5010 AccessoriesFAN Kits GA2100A, GA3100 GA3100A, and GA3200TA 101808 Warranty Information Keep this Warranty