Desa VN3000D, VN1800ITA, VN1800D, VN2550ITA installation manual Heater, To Select Heating Level

Page 19

OPERATING	Thermocouple	Ignitor Electrode

		Pilot Burner
HEATER

Models VN1800ITA

and VN2550ITA

Continued

Figure 17 - Pilot

TO SELECT HEATING LEVEL

WARNING

When running heater, set control knob at the 1, 2, 3, or 4 locked positions. Never set control knob between locked positions. Poor combustion and higher levels of carbon monoxide may result.

CAUTION

Do not try to adjust heating levels by using the manual shutoff valve.

1.Slightly press in plaque control knob on right side of heater and turn

counterclockwise C-clockwiseto the desired position.

IMPORTANT: Release downward pressure while turning control knob. Control knob will lock at the desired position.

2.Turn thermostat control knob on left side of heater to any setting between LO and HI. Note: When burners cycle on, or from LO to HI, a “click” will be heard. When the burners light, a “whoosh” noise will be heard.

Control
Knob	VN1800ITA VN2550ITA

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

Figure 18 - Burner Patterns

Continued	19

101822

Image 19

Contents What to do if YOU Smell GAS OWNER’S Operation and Installation ManualContents Safety Information Combustion and Ventilation, pages 5 through Product Local Codes Unpacking Product FeaturesIdentification Producing Adequate Ventilation Fresh AIR ForCombustion VentilationDetermining FRESH-AIR Flow for Heater Location Fresh AIR for Combustion and VentilationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside Building Ventilation AIRVentilation Air from Outdoors Ventilation Air From OutdoorsLocating Heater Installing To WallInstallation Items Check GAS TypeAttaching Thermostat Sensing Bulb Thermostat Sensing BulbModels VN1800ITA and VN2550ITA Only Locating Thermostat Sensing BulbMethods For Attaching Mounting Bracket To Wall Installing Heater to WallMounting Bracket Removing Front Panel Of HeaterAttaching Mounting Bracket To Wall Marking Screw LocationsPlacing Heater On Mounting Bracket Installing Bottom Mounting ScrewsConnecting to GAS Supply Servicing. Correct all leaks at once Pressure Testing GAS Supply Piping SystemChecking GAS ConnectionsChecking GAS Connections Pressure Testing Heater GAS ConnectionsOperating Heater Lighting Instructions Operating HeaterTo Select Heating Level HeaterShutting Off Burner Only pilot stays lit Shutting Off HeaterInjury or loss of life Explosion may result causing property damage, personalOperating If you do not follow these instructions exactly, a fire orModels VN1800D and VN3000D LOW MED High Pilot Flame Pattern Inspecting BurnerIf burner flame pattern is incorrect, as shown in Figure Burner Flame PatternAir Passageways Cleaning and Maintenance Trouble ShootingODS/PILOT and Burner Orifice CabinetTROUBLE- Shooting Observed Possible Remedy Problem CauseSee Cleaning Trouble ShootingIng statement at If you smell gasShut off gas supply Do not try to light any applianceService Publications Hints Technical ServiceVN1800D VN3000D Accessories Replacement PartsModel VN1800ITA Illustrated Parts BreakdownParts List Model VN2550ITA Parts List Model VN1800D Control Position Label Hardware Assembly Model VN3000D Parts List Keep this Warranty Warranty Information