Operating Guide

ManualsBrandsThermablaster ManualsGas Space HeatersWDFT320-VF

WARNING: This appliance is equipped for (Natural and/or Propane) gas.

Field conversion is not permitted other than between natural or propane

gases in dual fuel models only.

Questions,problems? Before returning to your retailer, call our customer service department at

1-877-670-8428, 9:00 am - 6:00 pm EST, Monday through friday or email service@thermablaster.com

This appliance may be installed in an aftermarket, permanently

located, manufactured (mobile) home, where not prohibited by local

codes. This appliance is only for use with propane or natural gas.

This appliance is equipped with a simple means to switch between

propane and natural gas in dual fuel models only. Field conversion

by any other means including the use of a kit is not permitted.

This is an unvented gas-fired heater. It uses air (oxygen) from the room in

which it is installed. Provisions for adequate combustion and ventilation

air must be provided. Refer to Air for Combustion and Ventilation

section on page 8 of this manual.

Warranty is void if not professionally installed.

INSTALLER: Leave this manual with the appliance.

CONSUMER: Retain this manual for future reference.

-- Installation and service must be performed by a qualified installer, service

agency or the gas supplier.

• Do not try to light any appliance

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the

gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

-- Do not store or use gasoline or other flammable vapors and liquid in vicinity

of this or any other appliance.

WARNING: IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED

EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY

DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE.

CAUTION - FOR YOUR SAFETY

REECON NORTH AMERICA

2515 LIBERTY AVE.

1ST FLOOR

PITTSBURGH, PA 15222

WWW.THERMABLASTER.COM

BLUE FLAME

Conforms to ANS Z21.11-2-2013. Gas-Fired Room Heater Volume II, Unvented Room Heater

32,000 BTU BLUE FLAME

VENT-FREE WALL HEATER

MODEL: WDFT320-VF

Summary of content (24 pages)

PAGE 1
32, 000BT UBL UEF L AME VENT F REEWAL LHEAT ER MODEL :WDF T 320VF CAUTI ON-FORYOURSAFETY WARNI NG:I FTHEI NFORMATI ONI NTHI SMANUALI SNOTFOLLOWED EXACTLY,AFI REOREXPLOSI ONMAYRESULTCAUSI NG PROPERTY DAMAGE,PERSONALI NJURY,ORLOSSOFLI FE. - Donotst or eorusegasol i neorot herf l ammabl evapor sandl i qui di nvi ci ni t y oft hi soranyot herappl i ance. • Donott r yt ol i ghtanyappl i ance • Donott ouchanyel ect r i calswi t ch;donotuseanyphonei nyourbui l di ng.
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TABLE OF CONTENTS About Us………………………….….….…1 Product Specifications……………………1 Important Safety Information…………….2 Product Features………………………….4 Installation Checklist……………………...4 Water Vapor……………………………….6 Air for Combustion…………………….….7 Determining Fresh Air Flow……………...8 Installation Considerations…………………10 Connecting to Gas Supply..........................11 Unit Operation……………………………….13 Care and Maintenance…...........................16 Troubleshooting…………...........................
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IMPORTANT SAFETY INFORMATION IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning. Only a qualified installer, service agent, or local gas supplier may install and service this product.
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3. This heater shall not be installed in the place which the strong wind would shut down the appliance. 12. Periodic visual check of pilot and burner flame, with pictorial sketches or drawings. 13. The appliance must be isolated from the gas supply piping system by closing its equipment shut-off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psi (3.5 kPa). 4. This heater needs fresh air ventilation to run properly.
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PRODUCT FEATURES SAFETY PILOT This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS/pilot shuts off the heater if there is not enough fresh air. automatically without any changes. Anyway by first use please let your qualified installer to install and start the heater following the instructions and the markings on the heater. THERMOSTATIC CONTROL These heaters have a control valve with a thermostat sensing bulb.
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Note to installer: Ensure that you are referencing the product manual for full details on each of the installation steps, warnings and considerations. This list is to be used to confirm the steps as you move through the installation. Please leave this sheet with the user. *Do not attempt any modifications, repairs or replacements on this unit without first discussing with Thermablaster Technical Support. Doing so will void the product’s warranty.
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UNPACKING 1. Remove heater from carton. 2. Remove all protective packaging applied to heater for shipping. 3. Check heater for any shipping damage. If heater is damaged, promptly inform dealer where you purchased heater. 4. Remove thread protective cup on the gas inlet pipe underneath the heater. 5. Install a D size (IEC R20 or LR20) 1.5 V battery (may not be available in the packaging, depending on your dealer). Be sure battery has full capacity.
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AIR FOR COMBUSTION AND VENTILATION WARNING: This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to ensure proper fresh air for this and other fuel-burning appliances in your home. provisions are provided for adequate combustion and ventilation air. Adjoining rooms are connecting only if there are odorless passageways or ventilation grills between them.
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DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Use this worksheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with door less passageways or ventilation grills between the rooms. 1. Determine the volume of the space Length × Width × Height = cu. ft. (volume of space) Example: Space size 20 ft. (length) × 16 ft. (width)×8 ft. (ceiling height) =2560 cu. ft.
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WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space, or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Air for Combustion and Ventilation, or applicable local codes.
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INSTALLATION CONSIDERATIONS NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source.
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LOCATING HEATER This heater is designed to be mounted on a wall. For convenience and efficiency, install heater:  Where there is easy access for operation, inspection, and service.  In the coldest part of room. MOUNTING HEATER TO WALL 1. Mounting the bracket Mount the attached bracket with folding anchor on desired location. 2. Hang the heater on the bracket Figure 7- Mounting on wall CONNECTING TO GAS SUPPLY External regulator WARNING: A qualified service technician must connect heater to gas supply.
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IMPORTANT: Install an equipment shutoff valve in an accessible location where the gas pipe goes indoors. The equipment shutoff valve is for turning on or shutting off the gas to the appliance. Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves. The installer must supply an external regulator with nominal outlet pressure of 11” water column and sufficient flow rates.
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Pressure Testing Heater Gas Connections 1. Open equipment shutoff valve. 2. Open gas supply tank valve. 3. Make sure control knob of heater is in the OFF position. 4. Check all joints from equipment shutoff valve to control valve. Apply mixture of liquid soap and water to gas joints. If bubbles form, there may be a leak. 5. Correct all leaks at once.
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Ignition Process: 1. During the first seasonal operation, set the Control Knob to Pilot, then hold down on the Control Knob for 3-5 minutes. This allows the air in the manifests to clear completely. During normal operation, you will only need to hold the Control Knob down on Pilot for about 5 seconds. 2. With the Control Knob set to Pilot, push down on both the Igniter Button and the Control Knob simultaneously until ignition can be heard.
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Figure 9 – Control Panel Figure 10 – Pilot System Figure 11 – Pilot Blue Flame 15
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CARE AND MAINTENANCE WARNING: Turn off heater and let cool before servicing CAUTION: You must keep control areas, burner, and circulating air passageways of the heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualified service technician. Heater may need more frequent cleaning due to excessive lint from carpeting, bedding material, pet hair, etc. ODS/PILOT AND BURNER Use a vacuum cleaner, pressurized air, or a small, soft bristled brush to clean.
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TROUBLESHOOTING       WARNING: If you smell gas: Open the window and door immediately. Shut off gas supply. Do not try to light any appliance. Do not touch any electrical switch; do not use any phone in your building. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. If you cannot reach your gas supplier, call the fire department. IMPORTANT: Operating heater where impurities in air exist may create odors.
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PROBLEM  POSSIBLE CAUSE  When igniter knob is pressed in there is no spark at ODS/pilot.      When igniter knob is pressed in there is a spark at ODS/pilot but no ignition.       ODS/pilot lights but flame goes out when control knob is released.    Burner(s) does not light after ODS/pilot is lit stably Delayed ignition of burner(s). Burner backfiring during combustion.  Yellow flame during burner combustion. Slight smoke or odor during initial operation.
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during this time.  Heater produces a whistling noise when burner is lit.        Heater produces a clicking/ ticking noise just after burner is lit or shut off. White powder residue forming within burner box or on adjacent walls or furniture. Heater produces unwanted odors.       Heater shuts off in use (ODS operates).      Gas odor during combustion Unexpected moisture/condensation noticed on windows.      Turning control knob to Hi position when burner is cold.
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ILLUSTRATED PARTS (Models: WDFT320-VF) 20
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PARTS LIST (Model: WDFT320-VF) Code 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Description Body cover Scatter panel Test connector plug Four-way connection Pilot flame assembly NAT ODS ODS fixing bracket LPG ODS Burner bracket Burner Front insulation board Gas distribution valve assembly Igniter micro switch Gas distribution valve bracket Gas distribution valve spring Gas distribution valve seat Igniter knob Thermostat Thermostat seat Code 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 De
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Questions about installation and initial operation should be directed to your installer. For all other concerns and questions, please reach out to our customer service team at 1-877-670-8428, by email at service@thermablaster.com, or visit www.thermablaster.com Annual Service Schedule Service Performed Service Date Please register your product online at www.thermablaster.
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