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UNVENTED (VENT-FREE) GAS LOG HEATER
INTERNATIONAL
OWNER’S OPERATION AND INSTALLATION MANUAL
For more information, visit www.desatech.com
For more information, visit www.desatech.com
24" and 30"Remote-Ready
24" and 30" Thermostat-
Controlled
Remote-Ready Models Also Design-Certified As Vented
Decorative Appliances
WARNING: Improper installation, adjust-
WARNING: If the information in this manual
ment, alteration, service, or maintenance
is not followed exactly, a fire or explosion
can cause injur
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TABLE OF CONTENTS 2 SAFETY INFORMATION TABLE OF CONTENTS SAFETY INFORMATION ............................................................ 2 OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB ........................................... 28 PRODUCT IDENTIFICATION ..................................................... 4 SPECIFICATIONS .................................................................... 29 OPTIONAL REMOTE CONTROL ACCESSORIES .................... 4 WIRING DIAGRAM .......................
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SAFETY INFORMATION 3 3 SAFETY INFORMATION Continued 9. This heater needs fresh, outside air ventilation to run properly. 1. This appliance is only for use with the type of gas indicated on This heater has an Oxygen Depletion Sensing (ODS) safety the rating plate. This appliance is not convertible for use with shutoff system. The ODS shuts down the heater if enough fresh other gases. air is not available. See Air for Combustion and Ventilation, 2. Do not place propane/LP supply tank(s) inside any
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WARMER TEMP COOLER AUTO ON OFF PRODUCT IDENTIFICATION 4 OPTIONAL REMOTE CONTROL ACCESSORIES LOCAL CODES UNPACKING PRODUCT IDENTIFICATION OPTIONAL REMOTE Log Set (Varies CONTROL ACCESSORIES According to Model) There are four optional remote controls that can be purchased separately for Remote-Ready Models Only: • wall switch • hand-held ON/OFF remote • wall thermostat • hand-held thermostat remote. Grate See Accessories, page 38. The wall thermostat or hand-held thermostat may not be used where v
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PRODUCT FEATURES 5 Operation 5 Safety Device Piezo Ignition System AIR FOR COMBUSTION AND VENTILATION Providing Adequate Ventilation PRODUCT FEATURES OPERATION PROVIDING ADEQUATE VENTILATION This heater is clean burning. It requires no outside venting. There is The following are excerpts from National Fuel Gas Code, ANSI no heat loss out a vent or up a chimney. Heat is generated by both Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation. realistic flames and glowing coals. This heat
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AIR FOR COMBUSTION AND VENTILATION Determining Fresh-Air Flow For Heater Location 6 AIR FOR COMBUSTION AND VENTILATION Continued The space in the above example is a confined space because the actual Btu/ DETERMINING FRESH-AIR FLOW FOR Hr used is more than the maximum Btu/Hr the space can support. You must HEATER LOCATION provide additional fresh air. Your options are as follows: Determining if You Have a Confined or A. Rework worksheet, adding the space of an adjoining room. If the ex- tra space
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AIR FOR COMBUSTION AND VENTILATION 7 Ventilation Air 7 AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR 12" Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must Ventilation provide two permanent openings: one within 12" of the ceiling and Ventilation Grills Grills Into Adjoining Room, one within 12" of the floor on the wall connecting the two spaces Into Adjoining Or Option 2
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INSTALLATION Check Gas Type 8 Installation and Clearances For Vent-Free Operation INSTALLATION NOTICE: This heater is intended for use as supple- CAUTION: This heater creates warm air currents. mental heat. Use this heater along with your primary These currents move heat to wall surfaces next to heating system. Do not install this heater as your heater. Installing heater next to vinyl or cloth wall primary heat source. If you have a central heating coverings or operating heater where impurities
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INSTALLATION 9 Installation and Clearances For Vent-Free Operation (Cont.) 9 INSTALLATION Continued Carefully follow the instructions below. This will ensure safe If Using Mantel installation into a masonry, UL127-listed manufactured fireplace, You must have noncombustible material(s) above the fireplace or listed vent-free firebox. opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have Minimum Clearances For Side Co
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INSTALLATION Mantel Clearances 10 Floor Clearances INSTALLATION Continued Mantel Shelf MANTEL CLEARANCES 10" Underside of 8" Mantel Shelf In addition to meeting noncombustible material clearances, you 6" must also meet required clearances between fireplace opening and 1 2 /2" mantel shelf. If you do not meet the clearances listed below, you will need a hood. All minimum distances are Determining Minimum Mantel Clearance in inches Minimum Non- If you meet minimum clearance between mantel shelf a
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INSTALLATION 11 Installing Damper Clamp Accessory For Vented Operation 11 Installing Heater Base Assembly INSTALLATION Continued INSTALLING DAMPER CLAMP ACCESSORY INSTALLING HEATER BASE ASSEMBLY FOR VENTED OPERATION WARNING: You must secure this heater to fire- (Remote-Ready Models Only) place floor. If not, heater will move when you adjust Note: When used as a vented heater, appliance must be installed controls. Moving heater may cause a gas leak. only in a solid-fuel burning fireplace with a
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INSTALLATION Installing Heater Base Assembly (Cont.) 12 Connecting To Gas Supply INSTALLATION Continued 2. Locate two masonry screws in hardware package. CONNECTING TO GAS SUPPLY 3. Place heater base in fireplace. WARNING: This appliance requires a 1/2" NPT 4. Place logs in their proper position on heater base (see Installing (National Pipe Thread) inlet connection to the pres- Logs, pages 15 through 17). sure regulator. 5. Center heater base and logs front-to-back and side-to-side in fireplace
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INSTALLATION 13 Connecting To Gas Supply (Cont.) 13 INSTALLATION Continued Installation must include an equipment shutoff valve, union, and CSA Design-Certified Equipment Shutoff Valve With 1/8" NPT Tap* plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge PROPANE/LP - From External hook up. NPT tap must be upstream from heater (see Figure 14 or Regulator 15, depending on your model). (11" W.C.** Approved Flexible IMPORTANT: Install equipment shutoff valve in an accessible to 14" W.C
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INSTALLATION Checking Gas Connections 14 INSTALLATION Continued CHECKING GAS CONNECTIONS Pressure Testing Heater Gas Connections 1. Open equipment shutoff valve (see Figure 16). WARNING: Test all gas piping and connections 2. Open main gas valve located on or near gas meter for natural for leaks after installing or servicing. Correct all gas or open propane/LP supply tank valve. leaks at once. 3. Make sure control knobs of heater are in the OFF position. 4. Check all joints from equipment shuto
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INSTALLATION 15 Installing Logs 15 INSTALLATION Continued INSTALLING LOGS WARNING: Failure to position the parts in accor- dance with these diagrams or failure to use only parts specifically approved with this heater may result in property damage or personal injury. CAUTION: After installation and periodically there- after, check to ensure that no yellow flame comes in contact with any log. With the heater set to High, check to see if flames contact any log. If so, reposi- tion logs according
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INSTALLATION Installing Logs (Cont.) 16 INSTALLATION Continued Models VGX24NT, VGX24PT, VGX30NT, VGX30PT, VGX24NR, VGX24PR, VGX30NR, VGX30PR, EX24NR, EX24PR, EX30NR AND EX30PR 1. Place log #1 (ember bed) onto the base. Position the log over the shoulder bolts on either side of the front burner. The log will sit on top of the front burner (see Figure 23). 2. Place log #2 over the right portion of the back burner and onto the two tabs on the right side of the base as shown in Figure 24. 3. Place
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INSTALLATION 17 Installing Logs (Cont.) 17 INSTALLATION Continued Models LGX3924NT and LGX3924PT 1. Place log #1 (ember bed) onto the base. Position the log over the shoulder bolts on either side of the front burner. The log will sit on top of the front burner (see Figure 28). 2. Place log #2 behind the back burner and onto the two back tabs as shown in Figure 29. 3. Place log #3 on the left side of the base. It will wrap around the front end of the back burner and fit over the tab at the front
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INSTALLATION Attaching Grate To Base Assembly 18 OPERATING HEATER (THERMOSTAT-CONTROLLED MODELS) For Your Safety Read Before Lighting Lighting Instructions INSTALLATION OPERATING HEATER Continued THERMOSTAT-CONTROLLED MODELS ATTACHING GRATE TO BASE ASSEMBLY Locate the two slots in the front of the base assembly. Carefully slide FOR YOUR SAFETY READ the decorative grate into these slots (see Figure 33). BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or explosion
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OPERATING HEATER (THERMOSTAT-CONTROLLED MODELS) 19 Lighting Instructions (Cont.) 19 To Turn Off Gas To Appliance OPERATING HEATER Continued Note: Home owners generally prefer to operate their heater Control Knob Ignitor Button with the chimney damper closed. This will put all the heat into Rear Burner Control Knob the room. However, there may be times you will desire the full flames of the Hi heat setting but will find the heat output excessive. You can open the chimney damper (if you have one)
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OPERATING HEATER (THERMOSTAT-CONTROLLED MODELS) Thermostat Control 20 Manual Lighting Procedure OPERATING HEATER (REMOTE-READY MODELS) For Your Safety Read Before Lighting Lighting Instructions OPERATING HEATER Continued THERMOSTAT CONTROL LIGHTING INSTRUCTIONS OPERATION The thermostat control knob can be set to any comfort level WARNING: between Hi and Lo. The thermostat will gradually modulate the • If fireplace has glass doors, never operate this heat output and flame height from higher to lo
