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UNVENTED (VENT FREE)
ANSI Z21.11.2a-2003
GAS LOG HEATER
ANSI Z21.60-2003
OWNER’S OPERATION AND
CSA 2.26-2003
INSTALLATION MANUAL
APPROVED
For more information, visit www.desatech.com
VFRMV18NA, VFRMV18PA
VFRMV24NA, VFRMV24PA
Vent-free Models Also Design--Certified As Vented Decorative Appliances
WARNING: Improper installation, ad-
WARNING: If the information in this manual
justment, alteration, service, or main-
is not followed exactly, a fire or explosion
tenance can cause injury or property
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TABLE OF CONTENTS 2 SAFETY INFORMATION TABLE OF CONTENTS CLEANING AND MAINTENANCE.............................................. 18 SAFETY INFORMATION ..............................................................2 TROUBLESHOOTING ...............................................................19 PRODUCT IDENTIFICATION ......................................................3 SPECIFICATIONS ......................................................................22 OPTIONAL REMOTE CONTROL ACCESSORIES .
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SAFETY INFORMATION 3 3 PRODUCT IDENTIFICATION SAFETY INFORMATION Continued ing. Make sure the selector switch is in the OFF position (Remote- 1. This appliance, as supplied, is only for use with the type of gas indicated Ready Models Only). Only a qualified service person should install, on the rating plate. This appliance is not convertible for use with other service, or repair heater. gases. 15. Make sure the selector switch is in the OFF position when you are away 2. Do not place propane
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OPTIONAL REMOTE CONTROL ACCESSORIES LOCAL CODES 4 UNPACKING PRODUCT FEATURES AIR FOR COMBUSTION AND VENTILATION PROVIDING ADEQUATE VENTILATION OPTIONAL REMOTE CONTROL SAFETY DEVICE ACCESSORIES This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shut off system. The ODS/pilot is a required feature for vent-free room heaters. There are four optional remote controls that can be purchased sepa- The ODS/pilot shuts off the heater if there is not enough fresh air. rately for Rem
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AIR FOR COMBUSTION AND VENTILATION 5 5 Providing Adequate Ventilation (Cont.) Determining Fresh-Air Flow for Appliance Location AIR FOR COMBUSTION AND 2.Multiply the space volume by 20 to determine the maximum Btu/Hr the VENTILATION space can support. Continued ____________(volume of space) x 20 = (Maximum Btu/Hr the space can support) Unusually tight construction is defined as construction where: Example: 25
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AIR FOR COMBUSTION AND VENTILATION 6 Ventilation Air AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR Ventilation Air From Inside Building 12" This fresh air would come from an adjoining unconfined space. When ven- tilating to an adjoining unconfined space, you must provide two permanent Ventilation openings: one within 12" of the ceiling and one within 12" of the floor on the Ventilation Grills Grills wall connecting the two spaces (see options 1 and 2, Figure 2). You can also
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INSTALLATION 7 7 Check Gas Type Installation and Clearences for Vent-free Operation INSTALLATION NOTICE: this heater is intended for use as supplemental heat. Use CAUTION: This heater creates warm air currents. These cur- this heater along with your primary heating system. Do not install this rents move heat to wall surfaces next to heater. Installing heater heater as your primary heating source. If you have a central heating next to vinyl or cloth wall coverings or operating heate
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INSTALLATION 8 Installation and Clearences for Vent-free Operation (cont.) INSTALLATION Continued Care fully follow the instructions below. This will ensure safe installation If Using Mantel into masonary, UL127-listaed manufactured fireplace, or listed vent-free firebox. You must have non-combustible material(s) above the fireplace opening. Non-combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have non-combustible material
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INSTALLATION 9 9 Mantel Clearances Floor Clearances INSTALLATION M a n te l S h e lf Continued 1 0 " U n d e rs id e o f 8 " M a n te l S h e lf 6 " MANTEL CLEARANCES 1 2 /2" In addition to meeting non-combustible material clearances, you must also meet A ll m in im u m required clearances between fireplace opening and mantel shelf. If you do not d is ta n c e s a re in in c h e s meet the clearances listed below, you will need a hood. M in im u m N o n - ( A ) C o m b u s tib le Det
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INSTALLATION 10 Installing Damper Clamp Accessory for Vented Operation Installing Heater Assembly INSTALLATION Continued INSTALLING DAMPER CLAMP ACCESSORY INSTALLING HEATER ASSEMBLY FOR VENTED OPERATION WARNING: If installing in a sunken fireplace, special care is needed. You must raise the fireplace floor to allow access to heater control panel. Note: When used as a vented decorative, appliance must be installed only in a solid-fuel burning fireplace with a working flue and constructed of non-
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INSTALLATION 11 11 Installing Heater Assembly (Cont.) Connecting to Gas Supply INSTALLATION CONNECTING TO GAS SUPPLY Continued Installation must include an equipment shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT WARNING: This appliance requires a 3/8" NPT (National Pipe tap must be upstream from heater (see Figure 13 page 12, depending on Thread) inlet connection to the pressure regulator. your model). IMPORTANT: Install equipment s
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INSTALLATION 12 Connecting To Gas Supply (Cont.) Checking Gas Connections INSTALLATION Continued 3. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas CSA Design-Certified Equipment Shutoff PROPANE/LP meter for natural gas, or using compressed air. Valve With 1/8" NPT Tap* - From External 4. Check all joints of gas supply piping system. Apply noncorrosive leak Approved Flexible Gas Regulator dete
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INSTALLATION 13 13 Checking Gas Connections (Cont.) INSTALLATION Continued Equipment Shutoff Valve Propane/LP Thermostat Gas Supply Valve or Control Valve Location Figure 15 - Checking Gas Joints (propane/LP only) Thermostat Gas Thermostat Gas Valve or Control Valve or Control Valve Location Valve Location Gas Meter Figure 16 - Checking Gas Joints (Natural Gas Only) For more information, visit www.desatech.com 114745-01 114745-01
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� � � � OPERATING HEATER (REMOTE-READY MODELS) 14 For Your Safety Read Before Lighting Lighting Instructions OPERATING HEATER NOTICE: During initial operation of new heater, burning logs will REMOTE-READY MODELS give off a paper-burning smell. Orange flame will also be present. Open damper or window to vent smell. This will only last a few FOR YOUR SAFETY READ hours. BEFORE LIGHTING Note: Home owners generally prefer to operate their heater with the chimney damper closed. This will put all t
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� ���� ��������� � � � OPERATING HEATER (REMOTE-READY MODELS) Lighting Instructions (Cont.) 15 15 To Turn Off Gas To Appliance Manual Lighting Procedure Remote Control Operation OPERATING HEATER Continued pressing ignitor button until pilot lights. Ignitor Pilot Burner Ignitor Pilot Electrode Note: If pilot does not stay lit, contact a qualified service person or gas Electrode Burner supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual
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� ���� ��������� � � � OPERATING HEATER (REMOTE-READY MODELS) 16 Remote Control Operation (Cont.) OPERATING HEATER Continued IMPORTANT: To turn the pilot off, manually turn the control knob IMPORTANT: Do not leave the selector switch in the REMOTE or on the heater to the OFF position. ON position when the pilot is not lit. This will drain the battery. ������������������ 2. Press the ON/OFF button to turn the burners on and off. When ����� ������� ������������ turning burners off, the pilot
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INSPECTING BURNERS 17 17 Pilot Flame Pattern Burner Flame Pattern INSPECTING BURNERS BURNER FLAME PATTERN Figure 24 shows correct burner fl ame pattern. Check pilot fl ame pattern and burner fl ame patterns often. NOTICE: Do not mistake orange fl ames with yellow tipping. Dirt PILOT FLAME PATTERN or other fi ne particles are burned by heat er, causing brief patches Figure 22 shows a correct pilot fl ame pat tern. Figure 23 shows an incorrect of orange fl ame. pilot fl ame pattern. The incorrect pilo
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CLEANING AND MAINTENANCE 18 Cleaning Burner Injector Holder and Pilot Air Inlet Hole CLEANING AND MAINTENANCE WARNING: Failure to keep the primary air openings of the burner clean may result in sooting and property damage. WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burners, and circulating Ports air passageways of heater clean. Inspect these areas of heater be- Slots fore each use. Have heater inspected yearly by a qualified service I
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TROUBLESHOOTING 19 19 TROUBLESHOOTING Note: For additional help, visit WARNING: Turn off and un- CAUTION: Never use a wire, DESA technical service web site at plug heater and let cool before needle, or similar object to clean www.desatech.com. servicing. Only a qualified service ODS/pilot. This can damage ODS/ person should service and repair pilot unit. Note: All troubleshooting items are listed heater. in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button
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TROUBLESHOOTING 20 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY One or both burner does not light after ODS/pilot 1. Inlet gas pressure is too low 1. Contact local natural or propane/LP gas com- is lit pany 2. Burner orifice(s) clogged 2. Clean burner(s) (see Cleaning and Mainte- nance, page 18) or replace burner orifice(s) 3. Contact qualified service person 3. Mislocated crossover tube 4. Replace burner orifice(s) 4. Burner orifice(s) diameter is too small 5. Put remote selecto
