LOW MED High | Desa VN3000D, VN1800ITA, VN1800D, VN2550ITA specs

OPERATING HEATER

Models VN1800D and VN3000D

Continued

TO SELECT HEATING LEVEL

WARNING

When running heater, set control knob at LOW, MEDIUM, or HIGH 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 control knob and turn counterclockwise C-clockwiseto the

LOW, MEDIUM, or HIGH positions.

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

Control

Knob VN1800D

OFF

PILOT

IGN

LOW

OFF

PILOT

IGN

MED

OFF

PILOT

IGN

VN3000D

LOW

MED

HIGH

HIGH

OFF

OFF

Figure 21 - Burner Patterns

Continued

101822

23

Image 23

Desa VN3000D, VN1800ITA, VN1800D, VN2550ITA installation manual LOW MED High

Contents

What to do if YOU Smell GAS OWNER’S Operation and Installation Manual Contents Safety Information Combustion and Ventilation, pages 5 through Identification Local Codes Unpacking Product FeaturesProduct Producing Adequate Ventilation Fresh AIR ForCombustion Ventilation Determining if You Have a Confined or Unconfined Space Fresh AIR for Combustion and VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation Air From Inside Building Ventilation AIR Ventilation Air from Outdoors Ventilation Air From Outdoors Locating Heater Installing To WallInstallation Items Check GAS Type Attaching Thermostat Sensing Bulb Thermostat Sensing BulbModels VN1800ITA and VN2550ITA Only Locating Thermostat Sensing Bulb Methods For Attaching Mounting Bracket To Wall Installing Heater to WallMounting Bracket Removing Front Panel Of Heater Attaching Mounting Bracket To Wall Marking Screw Locations Placing Heater On Mounting Bracket Installing Bottom Mounting Screws Connecting to GAS Supply Servicing. Correct all leaks at once Pressure Testing GAS Supply Piping SystemChecking GAS Connections Checking GAS Connections Pressure Testing Heater GAS Connections Operating Heater Lighting Instructions Operating Heater To Select Heating Level Heater Shutting Off Burner Only pilot stays lit Shutting Off Heater Injury or loss of life Explosion may result causing property damage, personalOperating If you do not follow these instructions exactly, a fire or Models VN1800D and VN3000D LOW MED High Pilot Flame Pattern Inspecting Burner If burner flame pattern is incorrect, as shown in Figure Burner Flame Pattern Air Passageways Cleaning and Maintenance Trouble ShootingODS/PILOT and Burner Orifice Cabinet TROUBLE- Shooting Observed Possible Remedy Problem Cause See Cleaning Trouble Shooting Ing statement at If you smell gasShut off gas supply Do not try to light any appliance VN1800D VN3000D Technical ServiceService Publications Hints Accessories Replacement Parts Model VN1800ITA Illustrated Parts Breakdown Parts List Model VN2550ITA Parts List Model VN1800D Control Position Label Hardware Assembly Model VN3000D Parts List Keep this Warranty Warranty Information