Desa GP30T, GWP30T, GWP20T, GWN20T, WMN20, GN30T, GWN30T Thermostat Control Operation

Page 17

OPERATING HEATER

Continued

6.With control knob pressed in, push down and release ignitor button. This will light pilot. The pilot is attached to the front of burner. The pilot is attached to the front of the burner. If needed, keep pressing igni- tor button until pilot lights.

Note: If pilot does not stay lit, refer to Troubleshooting, pages 20 through 23. Also contact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Lighting Procedure.

7.Keep control knob pressed in for 30 sec- onds after lighting pilot. After 30 seconds, release control knob.

•If control knob does not pop up when re- leased, contact a qualified service person or gas supplier for repairs.

Note: If pilot goes out, repeat steps 3 through 7. This heater has a safety inter- lock system. Wait one (1) minute before lighting pilot again.

8.Turn control knob counterclockwise to desired heating level. The main burner should light. Set control knob to any heat level between 1 and 5.

CAUTION: Do not try to ad- just heating levels by using the equipment shutoff valve.

Thermocouple

Ignitor Electrode

Pilot Burner

Figure 22 - Pilot (actual pilot may vary)

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1.Turn control knob clockwise to the OFF position.

2.Turn off all electric power to the appliance if service is to be performed.

Shutting Off Burner Only (pilot stays lit)

Turn control knob clockwise to the PI- LOT position.

THERMOSTAT CONTROL

OPERATION

The thermostatic control used on these models differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. The thermostat adjusts the amount of gas flow to the burner. This increases or decreases the burner flame height. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature. The control knob can be set to any heat level between 1 and 5. Selecting the 5 setting will cause the burner to remain fully on without modulating down in most cases.

Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room tempera- ture (depending on housing construction, instal- lation location, room size, open air tempera- tures, etc.). Frequent use of your heater will let you determine your own comfort levels.

MANUAL LIGHTING

PROCEDURE

1.Remove front panel (see Figure 7, page 9).

2.Follow steps 1 through 5 under Lighting In- structions, pages 16 and 17.

3.With control knob pressed in, strike match. Hold match to pilot until pilot lights.

4.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow step 8, under Light- ing Instructions, pages 16 and 17.

5.Replace front panel.

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Contents What to do if YOU Smell GAS Table of Contents Safety Information Local Codes Product FeaturesProduct Identification UnpackingProviding Adequate Ventilation AIR for Combustion VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining if You Have a Confined or Unconfined Space Determining FRESH-AIR Flow for Heater LocationVentilation AIR InstallationCheck GAS Type Ventilation Air From Inside BuildingLocating Heater Installation ItemsInstalling Heater to Wall Placing Heater On Mounting Bracket 20,000 Btu/Hr ModelsAttaching To Wall Anchor Method Mounting Base Feet to Floor Where required by local code Installing Bottom Mounting ScrewsMounting Heater to Floor with Optional Floor KIT Mounting Base Feet to HeaterTypical Inlet Pipe Diameters Connecting to GAS SupplyPropane/LP Checking GAS ConnectionsNatural Gas Open equipment shutoff valve see , Pressure Testing Heater Gas ConnectionsLighting Instructions Manual Control Models For Your Safety Read Before LightingOperating Heater To Turn OFF GAS To Appliance Manual Lighting ProcedureShutting Off Heater Shutting Off Burner Only pilot stays litThermostat Control Operation Burner Flame Pattern Inpecting HeaterPilot Flame Pattern ODS/PILOT and Burner Cleaning MaintenanceBurner Pilot AIR Inlet CabinetObserved Problem Possible Cause Remedy TroubleshootingReplace burner orifice See Cleaning and Mainte Statement above Gas leak. See WarningGP30, GP30T SpecificationsGN30, GN30T WMN20, GWN20 Technical Service Service HintsService Publications Replacement Parts Parts Under WarrantyIllustrated Parts Breakdown NJF 8C Parts ListGWN20T, GWP20T GWN30T, GWP30T Parts List Equipment Shutoff Valve GA5010 AccessoriesFAN Kits GA3250T Base KIT GA4550Parts Centrals Limited Warranty VENT-FREE Residential GAS Heaters Warranty InformationKeep this Warranty

GP30, GWN20T, GWN30T, GWN20, GWP20 specifications

Desa GWP20, GWP30T, GP30T, GN30T, and GP30 are advanced water heater models that stand out in the market for their efficiency, innovative technology, and user-friendly features. Each model is designed to cater to different consumer needs, offering reliable hot water solutions for residential and commercial applications.

The Desa GWP20 is a compact and efficient water heater that operates on a 20-gallon tank. Ideal for smaller households, it boasts fast heating capabilities and a durable construction that ensures longevity. Its user-friendly control panel allows for easy temperature adjustments, and its energy-saving mode helps reduce utility costs.

Moving up in capacity, the GWP30T features a 30-gallon tank, making it suitable for medium-sized households. This model incorporates a high-efficiency burner that maximizes heat output while minimizing gas consumption. With an upgraded insulation system, the GWP30T retains heat for longer periods, enhancing energy efficiency. The built-in diagnostics monitor performance, ensuring consistent operation and alerting users to any potential issues.

The GP30T is another 30-gallon model that emphasizes flexible installation options. It can be configured for various venting systems, making it adaptable for different home layouts. Its robust safety features, such as an automatic shut-off system, provide peace of mind for users. Additionally, the GP30T is equipped with a flame sensor for improved safety during operation.

For those seeking an efficient gas-powered unit, the GN30T delivers exceptional performance with a 30-gallon capacity. This model is designed to withstand the demands of larger households, featuring rapid recovery rates to provide a continuous supply of hot water. It utilizes advanced combustion technology that ensures efficient gas usage, striking the perfect balance between performance and energy costs.

Finally, the GP30 is a versatile water heater designed to meet diverse consumer needs. With a focus on sustainability, this model incorporates eco-friendly materials and technologies. The GP30 is packed with features that enhance its usability, such as customizable temperature settings, easy-to-read indicators, and a straightforward installation process.

In summary, Desa's GWP20, GWP30T, GP30T, GN30T, and GP30 water heaters are engineered for efficiency and reliability. Each model offers unique features tailored to specific user needs, from compact designs for smaller spaces to powerful systems for larger families. With an emphasis on modern technology and safety, Desa continues to be a leader in the water heating market.
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