Desa VUL18, VUL24, VUL30, P)T, P)R, HRB3624, HRB3930/3924 Mantel Clearances, If Using Mantel

Page 10

Installation

Continued

NOTICE: Manual control heaters maybeusedasaventedproduct. If so, you must always run heater with chimney flue damper open. If running heater with damper open, noncombustible material above fireplace opening is not needed. Go to Installing Damper Clamp Accessory for Vented Operation, page 12.

Minimum Noncombustible Material

Clearances

If Not Using Mantel

Note: If using a mantel proceed to If Using Mantel. If not using a mantel, follow the information on this page.

You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2" thick. With sheet metal, you must have non- combustible material behind it. Noncombustible material must extend at least 8" up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory (24" and 30" Models Only). See Figure 5 for minimum clearances.

If Using Mantel

You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2" thick. With sheet metal, you must have non- combustible material behind it. Noncombustible material must extend at least 8" up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory (24" and 30" Models Only). Even if noncombustible material is more than 12", you may need the hood accessory to deflect heat away from your mantel shelf. See Figure 5 and Figures 6 and 7, page 9, for minimum clearances.

IMPORTANT: If you cannot meet these minimum clearances, you must operate heater with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 12.

Noncombustible

 

 

 

 

Material

Requirements for

Distance (A)

Safe Installation

12" or more

Noncombustible mate-

 

rial OK.

Between 8" and 12"

24" or 30" Models:

 

Install fireplace hood

 

accessory (GA6050,

 

GA6052 or GA6053 see

 

Accessories, page 42).

 

18" Model: Noncombus-

 

tible material OK.

Less than 8"

Noncombustible mate-

 

rial must be extended to

 

at least 8". See Between

 

8" and 12", above. If you

 

cannot extend material,

 

you must operate heater

 

with flue damper open.

 

 

 

 

Heat Resistant

 

 

 

 

 

 

 

 

Material

 

 

 

 

 

 

 

 

(A)

 

 

 

 

 

Figure 5 - Heat Resistant Material (Slate,

Marble, Tile, etc.) Above Fireplace

Mantel Clearances

In addition to meeting noncombustible material clearances, you must also meet required clearances between fireplace opening and mantel shelf. If you do not meet the clearances listed below, you will need a hood.

Determining Minimum Mantel Clearance If you meet minimum clearance between mantel shelf and top of fireplace opening, a hood is not required (see Figure 6, page 11).

Determining Minimum Mantel Clearance

When Using a Hood

If minimum clearances in Figure 6, page 11, are not met, you must have a hood. When using a hood there are still certain minimum mantel clearances required. Follow minimum clearances shown in Figure 7, page 11, when using hood.

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Contents What to do if YOU Smell GAS Table of Contents Safety InformationSafety Information Unpacking Product Identification Optional Remote Control AccessoriesProduct Features Local CodesProviding Adequate Ventilation Air For Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation AIR Ventilation Air From Inside BuildingInstallation Ventilation Air From OutdoorsCheck GAS Type Installation and Clearances For Vent-Free OperationMinimum Firebox Size Determining Minimum Mantel Clearance When Using a Hood If Using MantelMaterial Requirements for Distance a Safe Installation Mantel ClearancesFloor Clearances Log SetArea of Various Standard Round Flues Diameter Installing Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly Chimney Minimum PermanentPosition heater base assembly in fireplace Installation Items NeededConnect to gas supply. See Connecting To Gas Supply, Connecting to GAS Supply External Regulator With Vent Pointing DownPropane/LP Minimum inlet pressure for purpose of input adjustmentNatural Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Pressure Testing Heater Gas ConnectionsChecking GAS Connections Correct all leaks at onceInstalling optional remote accessories Installing Remote ReceiverInstalling Logs VUL Model Logs OnlyInstalling VUL Model Log Sets CRB and HRB Model Logs OnlyThermostat-Controlled Models For Your Safety Read Before LightingOperating Heater Lighting InstructionsThermostat Control Operation Manual Lighting ProcedureTo Turn OFF GAS To Appliance Shutting Off HeaterRemote-Ready Models Pilot Propane/LP Thermostat Series Model Optional Hand-HeldRemote Operation HRC200Inspecting Burners Pilot Flame PatternFront Burner Flame Pattern Cleaning MaintenanceBurner Injector Holder and Pilot Air Inlet Hole Main burner Wiring DiagramLogs Remote-Ready Models OnlyTroubleshooting Observed Problem Possible Cause RemedyODS/pilot lights but flame Goes out when control knob isSafety interlock system has Press in control knob fullyBattery is not installed. Bat Observe minimum installaWhen heated, vapors from Turn heater off when using 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 Thermostat Models SpecificationsOptional Positioning of Thermostat Sensing Bulb 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 Parts List Listed under Replacement Parts on page 42 of this manualRemote-Ready Variable Control Models VUL18NR, VUL18PR, VUL24NR, VUL24PR, VUL30NR, VUL30PRNo. Part No Description Illustrated Parts Breakdown HRB3924NR Replacement Parts Service HintsTechnical Service AccessoriesWALL-MOUNT ON/OFF Switch GWMS2 Receiver and HAND-HELD Remote Control KIT HRC100WALL-MOUNT Thermostat Switch GWMT1 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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