Desa CGR65BNA, CGR35NA, CGR65NA, CGR50BNA, CGR50NA Blower Wiring Diagram, Changing Burner Orifice

Page 34

SERVICE PROCEDURES

Continued

Changing Burner Orifice

1.Shut off gas supply to heater.

2.Remove lower front access panel on heater.

3.Disconnect burner tube from orifice holder (see Figure 25).

4.Remove orifice holder from burner (see Figure 25).

5.Use socket or open-end wrench to remove the old orifice from the orifice holder.

6.Clean and replace orifice, or replace with new orifice.

7.Turn on gas to heater and check for gas leaks. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.

8.Replace lower front access panel.

BLOWER

WIRING

DIAGRAM

(For Models With

Burner

Orifice

Burner

Tube

Orifice

Holder

Figure 25 - Orifice Location (35,000 BTU/Hr Burner Shown)

Figure 26 - Orifice

Fan Switch

(Off/On/Auto)

Auto

Off

On

Blower Assembly)

Red

Fan

34

Black Blue

110/115 V.A.C.

Black

White

Green

Switch (N.O.)

Black

Blower

Motor

Red

White

100792

Image 34

Contents For Your Safety OWNER’S Operation and Installation ManualWhat to do if YOU Smell GAS Contents Safety Information Carbon monoxide poisoning may lead to deathSafety Information Product IdentificationInstallation Items Local Codes Unpacking Product FeaturesCheck GAS Type Locating Heater Heater ClearancesVenting Heater Venting Heater Do not vent heater in any of the following ways see FigureVenting Heater Proper Size Vent Connecting to GAS Supply Connecting Heater to Utility Gas LineGas Connection Pressure Testing Gas Supply Piping System Checking GAS ConnectionsInstalling Radiants Location of RadiantsInstalling Glass Panel Inserting Glass PanelsInserting Glass into Lower Retaining Channel AIR for Combustion and Ventilation Determining FRESH-AIR Flow for Heater Location Draft Hood Spillage TestVentilation Air from Outdoors Example 2 Locating Heater in Confined Closed Area Operating Heater For Your Safety Read Before LightingLighting Instructions Viewing Pilot To Turn OFF GAS to Appliance Manual Lighting ProcedureBlower Operation Shutting Off HeaterPilot Flame Pattern Inspecting Pilot and Burner FlameBurner Flame Pattern Correct Burner Flame Pattern Cleaning and Maintenance Trouble Shooting Observed Possible Problem Cause RemedySee Changing Burner TROUBLE- Shooting See Removing ControlLighting Instructions Ing statement at TopService Procedures Removing Control Valve and Burner TubeRemoving Burner Blower Wiring Diagram Changing Burner Orifice35,000 BTU/Hr 50,000 BTU/Hr Technical ServiceService Hints ModelParts Under Warranty Ordering Replacement Parts CentralsParts Not Under Warranty Accessories Valve GA5010Illustrated Parts List Blower AssemblyCabinet Assembly Burner Assembly Thermocouple Interrupter 100792 100792 Warranty Information Limited Warranty Comfort Glow Vented Natural GAS Heaters