Desa VFRMV18PA, VFRMV18NA, VFRMV24NA, VFRMV24PA installation manual Table of Contents

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WARNING: Improper installation, adjustment, altera- tion, service or maintenance can cause injury or prop- erty damage. Refer to this manual for correct installation and operational procedures. For assistance or addi- tional information consult a qualified installer, service agency or the gas supplier.

WARNING: This appliance is for installation only in

asolid-fuel burning masonry or UL127 factory-built fireplace or in a listed ventless firebox enclosure. It is design-certified for these installations in accordance with ANSI Z21.11.2. Exception: Do not install this appli- ance in a factory-built fireplace that includes instruc- tions stating it has not been tested or should not be used with unvented gas logs.

WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provi- sions for adequate combustion and ventilation air must be provided. Refer to Air for Combustion and Ventilation section on page 6 of this manual.

This appliance may be installed in an aftermarket,* per- manently located, manufactured (mobile) home, where not prohibited by local codes.

This appliance is only for use with the type of gas indi- cated on the rating plate. This appliance is not convert- ible for use with other gases.

* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer

TABLE OF CONTENTS

Safety Information

3

Cleaning and Maintenance

20

Product Identification

5

Wiring Diagram

21

Local Codes

5

Troubleshooting

22

Unpacking

5

Specifications

26

Optional Remote Control Accessories

5

Replacement Parts

26

Product Features

5

Service Hints

26

Air For Combustion and Ventilation

6

Technical Service

26

Installation

8

Accessories

26

Operating Heater

16

Illustrated Parts Breakdown and Parts List

28

Inspecting Burners

19

Warranty Information

32

2

www.desatech.com

114745-01B

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Contents VFRMV18NA, VFRMV18PA VFRMV24NA, VFRMV24PA Ansi Z21.11.2a-2003 Ansi Z21.60-2003Table of Contents Safety Information Provide adequate clearances around air openings Unpacking Product IdentificationLocal Codes Determining FRESH-AIR Flow for Appliance Location AIR for Combustion VentilationProviding Adequate Ventilation Ventilation AIR Ventilation Air From Inside BuildingAIR for Combustion Ventilation Installation Ventilation Air From OutdoorsInstallation and Clearances for VENT-FREE Operation Check GAS TypeInstallation Minimum Noncombustible Material ClearancesMantel Clearances Floor ClearancesInstallation Items Needed Installing Damper Clamp Accessory for Vented OperationInstalling Heater Assembly Masonry Manufactured FireplaceFireplaceConnecting to GAS Supply Propane/LP External Regulator Supply Tank Vent Pointing DownPropane/LP From Checking GAS ConnectionsTo Gas Control Valve Test Pressures In Excess Of 1/2 Psig 3.5 kPa Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaLighting Instructions For Your Safety Read Before LightingOperating Heater Shutting Off Heater To Turn OFF GAS To AppliancePropane/LP Natural ON/OFF Series Model Ghrcb Manual Lighting ProcedureOptional HAND-HELD Remote Operation Thermostat Series Model GhrctbPilot Flame Pattern Auto Shutoff FeatureInspecting Burners Check pilot flame pattern and burner flame pat- terns oftenBurner Injector Holder and Pilot AIR Inlet Hole Cleaning MaintenanceBurner Flame Pattern Wiring Diagram Propane/LPTroubleshooting Observed Problem Possible Cause RemedyClean ODS/pilot see Out when control knob is reSafety interlock system has Low gas pressure AssemblyOperation Processes and logs curing Hours of operation Cleaners or similar productsGas regulator defective Replace gas regulator Turning control knob to HIGas leak. See Warning Technical Service SpecificationsReplacement Parts AccessoriesWALL-MOUNT Thermostat Switch GWMT1 Receiver and HAND-HELD Thermostat Remote Control KIT GhrctbReceiver and HAND-HELD Remote Control KIT Ghrcb FB36CA, FB42C Series CIRCULATING, FB36NCA, FB42NCIllustrated Parts Breakdown VFRMV18NA, VFRMV18PAParts List 114745-01B 114745-01B Limited Warranty VENT-FREE GAS LOG Heaters Warranty InformationKeep this Warranty

VFRMV24PA, VFRMV18PA, VFRMV18NA, VFRMV24NA, VFRMV24PA specifications

Desa's VFRMV series is a line of advanced heating solutions designed for energy efficiency and optimal comfort. The series includes models VFRMV24PA, VFRMV18PA, VFRMV18NA, VFRMV24NA, and VFRMV24PA. Each model is tailored to meet different heating demands, making them suitable for various residential and commercial applications.

One of the defining features of the VFRMV series is its inverter technology, which adjusts the compressor speed to match the heating or cooling needs of the environment. This capability not only enhances energy efficiency but also contributes to a quieter operation. Users can expect significant energy savings, as the inverter technology minimizes energy consumption during periods of low demand.

Each model in the VFRMV series boasts high-performance SEER and HSPF ratings, indicating superior energy efficiency and performance. With such ratings, these units are designed to make substantial contributions to reducing heating and cooling costs while complying with modern environmental standards.

The VFRMV24PA and VFRMV24NA models are particularly effective in larger spaces, offering robust heating capacities while remaining energy efficient. On the other hand, the VFRMV18PA and VFRMV18NA models cater to medium-sized spaces, ensuring that homes or offices maintain a comfortable atmosphere without overspending on energy bills.

Additional characteristics include advanced filtration systems that improve indoor air quality by removing dust, allergens, and pollutants. This feature is particularly beneficial for allergy sufferers or anyone keen on maintaining a healthier living environment.

Moreover, the VFRMV series incorporates smart home compatibility, allowing users to control their heating and cooling systems remotely via smartphone apps. This feature not only adds convenience but also enables better energy management, as users can adjust settings based on their schedules or occupancy patterns.

In summary, Desa's VFRMV series, comprising models VFRMV24PA, VFRMV18PA, VFRMV18NA, VFRMV24NA, and VFRMV24PA, offers a blend of efficiency, performance, and advanced technology. The use of inverter technology, high SEER and HSPF ratings, robust heating capabilities, advanced filtration, and smart home features make these units ideal choices for anyone looking to enhance comfort while minimizing energy expenses.
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