Desa P)R, P)T, HRB3624, HRB3930/3924, VUL18, VUL24, VUL30 Inspecting Burners, Pilot Flame Pattern

Page 25

Operating Heater

Continued

Manual Mode

1. Press the POWER and LOCK buttons together to turn on the hand-held remote control.

2. Press the MANU button to turn on the fireplace.

3. Press the POWER and LOCK buttons together to turn off the fireplace.

Auto (Thermostatic) Mode

1. Press the POWER and LOCK buttons together to turn on the hand-held remote control.

2. Press AUTO button to select this mode.

3. Set the desired room temperature by press- ing the TEMP + or - buttons.

4. Press the POWER and LOCK buttons together to turn off the fireplace

Note: Do not leave the hand-held remote in the AUTO mode close to the fireplace. The radiant heat from the fireplace will turn off the fireplace. Ideally, place the hand-held remote in the center of the room facing towards the fireplace.

Note: Do not hold the hand-held remote for a long time. Body temperature will affect its operation in the AUTO mode.

Safety Features

When away from home for an extended period of time or as a child safety feature to prevent accidental ignition of the fireplace, the receiver ON/OFF/REMOTE switch should be in the OFF position.

Auto Shutoff Feature

1. If the average room temperature exceeds

82 degrees Fahrenheit (28 degrees Centi- grade), the hand-held remote control will perform a safety override and shut the fireplace off. This feature is not available in the MANU mode.

2. The receiver continuously receives signals from the hand-held remote to control the room temperature. If the hand-held remote is misplaced, obstructed or for any reason cannot transmit to the receiver, the receiver will shut off the fireplace after 8 minutes.

Key Pad Lock Feature

This feature allows the user to lock/unlock the keypad on the hand-held remote in the MANU or AUTO mode to prevent inadvertent operation (i.e. children operating the hand-held remote control, etc.). The keypad is locked in either on or off. Press the POWER and LOCK buttons together to turn the unit on or off.

Inspecting Burners

Check pilot flame pattern and burner flame pat- terns often.

PILOT FLAME PATTERN

Figure 36 shows a correct pilot flame pattern. Figure 37 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

If pilot flame pattern is incorrect, as shown in Figure 37

•turn heater off (see To Turn Off Gas to Appli- ance, page 21 [Thermostatically-Controlled Models] or page 23 [Remote-Ready Models])

•see Troubleshooting, page 28

Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.

Thermocouple

Pilot Burner

 

Thermocouple

Figure 36 - Correct Pilot Flame Pattern (Your pilot may vary from pilots shown)

Thermocouple

Pilot Burner

Thermocouple

Figure 37 - Incorrect Pilot Flame Pattern (Your pilot may vary from pilots shown)

119426-01A

www.desatech.com

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Contents What to do if YOU Smell GAS Safety Information Table of ContentsSafety Information Unpacking Product Features Optional Remote Control AccessoriesProduct Identification Local CodesProviding Adequate Ventilation Air For Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors InstallationCheck GAS Type Installation and Clearances For Vent-Free OperationMinimum Firebox Size Material Requirements for Distance a Safe Installation If Using MantelDetermining Minimum Mantel Clearance When Using a Hood Mantel ClearancesLog Set Floor ClearancesInstalling Heater Base Assembly Installing Damper Clamp Accessory for Vented OperationArea of Various Standard Round Flues Diameter Chimney Minimum PermanentPosition heater base assembly in fireplace Installation Items NeededConnect to gas supply. See Connecting To Gas Supply, External Regulator With Vent Pointing Down Connecting to GAS SupplyPropane/LP Minimum inlet pressure for purpose of input adjustmentNatural Checking GAS Connections Pressure Testing Heater Gas ConnectionsTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Correct all leaks at onceInstalling Remote Receiver Installing optional remote accessoriesVUL Model Logs Only Installing LogsCRB and HRB Model Logs Only Installing VUL Model Log SetsOperating Heater For Your Safety Read Before LightingThermostat-Controlled Models Lighting InstructionsTo Turn OFF GAS To Appliance Manual Lighting ProcedureThermostat Control Operation Shutting Off HeaterRemote-Ready Models Pilot Propane/LP Remote Operation Optional Hand-HeldThermostat Series Model HRC200Pilot Flame Pattern Inspecting BurnersFront Burner Flame Pattern Cleaning MaintenanceBurner Injector Holder and Pilot Air Inlet Hole Logs Wiring DiagramMain burner Remote-Ready Models OnlyObserved Problem Possible Cause Remedy TroubleshootingSafety interlock system has Goes out when control knob isODS/pilot lights but flame Press in control knob fullyWhen heated, vapors from Turn heater off when using Observe minimum installaBattery is not installed. Bat Mote-Ready Models Only Tery power is lowGas leak. See Warning For Masonry and Factory- built Metal Fireplace Optional Positioning Thermostat Sensing BulbThermostat-Controlled Models Only Optional Positioning of Thermostat Sensing Bulb SpecificationsThermostat Models VUL18PTLog Models Illustrated Parts Breakdown and Parts ListVUL18PR, 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 Technical Service Service HintsReplacement Parts AccessoriesWALL-MOUNT Thermostat Switch GWMT1 Receiver and HAND-HELD Remote Control KIT HRC100WALL-MOUNT ON/OFF Switch GWMS2 Cleaning KIT GCKKeep this Warranty Warranty InformationLimited 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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