Desa HRB3930/3924, P)T, P)R, HRB3624 Wiring Diagram, Logs, Main burner, Remote-Ready Models Only

Page 27

Cleaning and

Maintenance

Continued

4.Check the injector holder located at the end of the burner tube again. Remove any large particles of dust, dirt, lint or pet hair with a soft cloth or vacuum cleaner nozzle.

5.Blow air into the primary air holes on the injector holder.

6.In case any large clumps of dust have now been pushed into the burner repeat steps 3 and 4.

Clean the pilot assembly also. A yellow tip on the pilot flame indicates dust and dirt in the pilot as- sembly. There is a small pilot air inlet hole about 2" from where the pilot flame comes out of the pilot assembly (see Figure 41). With the unit off, lightly blow air through the air inlet hole. You may blow through a drinking straw if compressed air is not available.

Injector Holder

Ports/Slots

Burner

Tube

Primary Air

Inlet Holes

Figure 40 - Injector Holder On Outlet

Burner Tube

Pilot Air

Inlet Hole

Pilot Assembly

Figure 41 - Pilot Inlet Air Hole (Your pilot

may vary from pilot shown)

LOGS

•If you remove logs for cleaning, refer to Install- ing Logs, page 18, to properly replace logs.

•Replace log(s) if broken or chipped (dime-sized or larger).

main burner

Periodically inspect all burner flame holes with the heater running. All slotted burner flame holes should be open with yellow flame present. All round burner flame holes should be open with a small blue flame present. Some burner flame holes may become blocked by debris or rust, with no flame present. If so, turn off heater and let cool. Remove blockage, blocked burner flame holes will create soot.

Wiring Diagram

(Remote-Ready Models Only)

Thermopile

119426-01A

www.desatech.com

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Contents What to do if YOU Smell GAS Safety Information Table of ContentsSafety Information Unpacking Local Codes Optional Remote Control AccessoriesProduct Features Product IdentificationAir For Combustion Ventilation Providing Adequate VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors InstallationInstallation and Clearances For Vent-Free Operation Check GAS TypeMinimum Firebox Size Mantel Clearances If Using MantelMaterial Requirements for Distance a Safe Installation Determining Minimum Mantel Clearance When Using a HoodLog Set Floor ClearancesChimney Minimum Permanent Installing Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly Area of Various Standard Round Flues DiameterInstallation Items Needed Position heater base assembly in fireplaceConnect to gas supply. See Connecting To Gas Supply, External Regulator With Vent Pointing Down Connecting to GAS SupplyMinimum inlet pressure for purpose of input adjustment Propane/LPNatural Correct all leaks at once Pressure Testing Heater Gas ConnectionsChecking GAS Connections Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaInstalling Remote Receiver Installing optional remote accessoriesVUL Model Logs Only Installing LogsCRB and HRB Model Logs Only Installing VUL Model Log SetsLighting Instructions For Your Safety Read Before LightingOperating Heater Thermostat-Controlled ModelsShutting Off Heater Manual Lighting ProcedureTo Turn OFF GAS To Appliance Thermostat Control OperationRemote-Ready Models Pilot Propane/LP HRC200 Optional Hand-HeldRemote Operation Thermostat Series ModelPilot Flame Pattern Inspecting BurnersCleaning Maintenance Front Burner Flame PatternBurner Injector Holder and Pilot Air Inlet Hole Remote-Ready Models Only Wiring DiagramLogs Main burnerObserved Problem Possible Cause Remedy TroubleshootingPress in control knob fully Goes out when control knob isSafety interlock system has ODS/pilot lights but flameMote-Ready Models Only Tery power is low Observe minimum installaWhen heated, vapors from Turn heater off when using Battery is not installed. BatGas leak. See Warning Optional Positioning Thermostat Sensing Bulb For Masonry and Factory- built Metal FireplaceThermostat-Controlled Models Only VUL18PT SpecificationsOptional Positioning of Thermostat Sensing Bulb Thermostat ModelsIllustrated Parts Breakdown and Parts List Log ModelsVUL18PR, VUL24NR, VUL24PR, VUL30NR and VUL30PR 113620-01 113620-04 113620-07 Top Log #1 113620-02 113620-05 Illustrated Parts Breakdown Listed under Replacement Parts on page 42 of this manual Parts ListVUL18NR, VUL18PR, VUL24NR, VUL24PR, VUL30NR, VUL30PR Remote-Ready Variable Control ModelsNo. Part No Description Illustrated Parts Breakdown HRB3924NR Accessories Service HintsTechnical Service Replacement PartsCleaning KIT GCK Receiver and HAND-HELD Remote Control KIT HRC100WALL-MOUNT Thermostat Switch GWMT1 WALL-MOUNT ON/OFF Switch GWMS2Warranty Information Keep this WarrantyLimited Warranty VENT-FREE GAS LOG Heaters

VUL 18R, VUL24R, VUL30R, HR B3930, HR 3924R, CRB3624T, VUL 18T, VUL24T, VUL30T, HR B3624T, VUL18, VUL24, VUL30, HRB3930/3924, HRB3624, P)R specifications

Desa P)R, HRB3624, HRB3930/3924, VUL18, VUL24, VUL30, VUL 18R, VUL24R, VUL30R, HR B3930, HR 3924R, CRB3624T, VUL 18T, VUL24T, VUL30T, and HR B3624T are part of an innovative product line designed to enhance efficiency and performance across various applications. These models showcase cutting-edge technologies and features that cater to diverse user needs.

The Desa P)R series is renowned for its robustness and reliability. Engineered with advanced materials, these models offer superior durability, making them suitable for both industrial and commercial environments. Their high-performance capabilities ensure they can handle demanding tasks without compromise.

The HRB3624 and HRB3930/3924 series provide powerful solutions with enhanced energy efficiency. Equipped with state-of-the-art motors and optimized designs, they deliver exceptional output while minimizing energy consumption. These models feature smart technology that adjusts performance based on workload, maximizing efficiency and prolonging equipment life.

VUL series, including VUL18, VUL24, and VUL30, is characterized by their versatility and user-friendly interface. These products incorporate intuitive controls, allowing for easy operation across various settings. The VUL series also features modular designs, enabling easy upgrades and maintenance to keep pace with changing requirements.

For those requiring specialized functions, the VUL 18R, VUL24R, and VUL30R models offer enhanced performance with refined specifications. These editions are optimized for high precision and are particularly suited for applications where accuracy is paramount.

The HR B3930 and HR 3924R models stand out due to their compact design without sacrificing power. Perfect for space-constrained environments, they provide a combination of high efficiency and powerful output, making them ideal for modern facilities.

The CRB3624T, VUL 18T, VUL24T, and VUL30T series incorporate advanced technology for temperature control and monitoring, ensuring optimal performance under varying conditions. These models are equipped with intelligent sensors that provide real-time feedback, allowing users to make informed adjustments.

Finally, the HR B3624T emphasizes thermal efficiency, boasting features that significantly reduce overheating risks and enhance safety. This series prioritizes user safety alongside effective performance.

In conclusion, the comprehensive features and technologies of the Desa P)R series, along with HRB and VUL models, position them as leading choices for industries seeking reliable, efficient, and versatile solutions.
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