Desa BTU/HR owner manual Ignitor, Carefully remove replacement ignitor from packing

Page 11

SERVICE PROCEDURES

Continued

IGNITOR

1.Remove upper shell and fan guard (See Up- per Shell Removal, page 9).

2.Remove fan (see page 9).

3.Remove 4 side cover screws with a 5/16" nut driver. Remove side cover (see Figures 18 or 19, page 10).

4.Disconnect ignitor wires from ignition con- trol assembly (see Figure 20). Pull the ignitor wires up through the hole in the lower shell.

5.Disconnect fuel line hose and air line hose. Remove photocell from photocell bracket (see Figure 20).

6.Remove combustion chamber. Stand combus- tion chamber on end with nozzle adapter bracket on top (see Figure 21 or 22).

7.Remove ignitor screw with a 1/4" nut driver for models using ignitor HA1000 or 5/16" nut driver for models using 102548-08 ignitor. Carefully remove ignitor from nozzle adapter bracket.

CAUTION: Do not bend or strike ignitor element. Handle with care.

8.Carefully remove replacement ignitor from packing.

9.Carefully guide ignitor into opening in nozzle adapter bracket. Do not strike ignitor element. Attach ignitor to nozzle adapter bracket with screw using a 1/4" nut driver for models us- ing ignitor HA1000 or 5/16" nut driver for models using 102548-08 ignitor (see Figure 23). Torque .90 to 1.69 N-m (8 to 15 in-lbs) Do not over torque.

10.Replace combustion chamber.

11.Route the ignitor wires back down through the hole in the lower shell. Connect wires to the ignition control assembly (see Figure 20).

12.Replace side cover (see Figures 18 or 19, page 10).

13.Connect and route fuel line hose and air line hose to nozzle adapter assembly. See Fuel and Air Line Replacement and Proper Routing, page 14.

14.Replace photocell in photocell bracket. Route wires as shown in either (see Figures 23, 24 or 27, page 12).

15.Replace fan (see page 9).

16.Replace fan guard and upper shell (see page 9).

Combustion

Nozzle

Adapter

Chamber

Bracket

 

Air Line

Ignitor

Hose

 

Fuel

 

Line

Ignitor

Hose

Wire

 

Photocell

 

Bracket

Ignition

 

Photocell

Control

Assembly

Assembly

Side Cover

Figure 20 - Disconnecting Ignitor Wires

from Ignition Control Assembly

Ignitor Screw/

Washer Assembly

Ignitor

Ignitor

Nozzle

Element

Photocell

Adapter

Bracket

Bracket

Combustion

ChamberNozzle Adapter

Bracket Opening

Figure 21 - Ignitor HA1000 Replacement

 

Ignitor

Ignitor Element

 

Photocell

Nozzle

Adapter

Bracket

Bracket

Nozzle Adapter

Combustion

Bracket Opening

Chamber

Figure 22 - Ignitor 102548-08 Replacement

113282-01C

www.desatech.com

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Contents Table of Contents Safety Information Never attach heater to external fuel tank UnpackingProduct Identification Theory of Operation FuelsVentilation To Start Heater AssemblyOperation For 110/115/155/165/200 Models onlyTo Restart Heater Wthout ON/OFF SwitchOperation with Portable Generator Storing TRANSPORTING, or ShippingHow Often How To Preventative Maintenance ScheduleTroubleshooting Fault Condition Possible Cause RemedyWater in fuel tank Ment,Dirty fuel filter Obstruction in nozzleFAN Service ProceduresUpper Shell Removal AIR OUTPUT, AIR Intake and Lint FiltersReplace filter end cover Pump Pressure AdjustmentFuel Filter Replace combustion chamber Carefully remove replacement ignitor from packingIgnitor For 40/50/55/60/70/110/115/155/165 Models Only Nozzle AssemblyPlace plastic hex-body into vise and lightly tighten For 200 Model Only Fuel and AIR Line Replacement and Proper RoutingPump Rotor Procedure if Rotor is Binding110/115 155 165 200 SpecificationsIgnition Control Assembly Model SizeIgnition Control Assembly Wiring DiagramsWiring Diagrams Thermostat Models Illustrated Parts BreakdownStandard Model R40, REM40, PK40, UK40, TK40, N40Models Parts ListStandard Model NTC-4C 50/55/60/70 ModelsStandard Models WLE-2 110/115/155/165 ModelsRM200BT, B200BT, PK200T, UK200T, TK200T, REM200BT, R200BT R200B, PK200, UK200, TK200See NOZZLE/BURNER Head Assembly for 200 Models Burner Head Assembly for 110/115/155/165 ModelsFHPF3-5C Motor and Pump Assembly for 40/50/55/60/70 ModelsFHPF3-5C Motor and Pump Assembly for 110/115/155/165 ModelsMotor and Pump Assembly for 200 Models Parts not Under Warranty Replacement PartsWheels and Handle Parts List Parts Under WarrantyAccessories Technical ServiceLimited Warranty Warranty and Repair Service

BTU/HR specifications

Desa BTU/HR is an innovative energy solution that emphasizes efficiency and sustainability in thermal energy generation. Designed with the modern consumer in mind, the Desa BTU/HR platform integrates advanced technologies to optimize heating systems for both residential and commercial applications.

At its core, Desa BTU/HR operates on the principle of maximizing thermal energy while minimizing waste. This is achieved through state-of-the-art heat exchangers and combustion technologies that ensure a higher yield of usable heat per unit of fuel consumed. By utilizing a variety of inputs, including biomass, natural gas, and renewable sources, Desa BTU/HR caters to a range of energy requirements, making it versatile for diverse environments.

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