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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
For more information, visit www.desatech.com For more information, visit www.desatech.com
("A" Models) 18", 24", and 30"
Remote-Ready
(“C” Models) 18", 24", and 30"
Variable Manually-Controlled
(“B” Models) 18", 24", and 30"
LO
PILOT
Thermostatically-Controlled
OFF
HI
Remote-Ready and Variable Manually-Controlled Models
Also Design-Certified As Vented Decorative Appliances
WARNING: Improper installation, adjust-
WARNIN
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TABLE OF CONTENTS 2 SAFETY INFORMATION TABLE OF CONTENTS SAFETY INFORMATION ............................................................ 2 TROUBLESHOOTING .............................................................. 24 OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB ...27 PRODUCT IDENTIFICATION ..................................................... 3 SPECIFICATIONS .................................................................... 28 OPTIONAL REMOTE CONTROL ACCESSORIES .................... 4
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SAFETY INFORMATION 3 PRODUCT IDENTIFICATION 3 SAFETY INFORMATION Continued 15. Turn heater off and let cool before servicing, installing, or re- 1. This appliance is only for use with the type of gas indicated on pairing. Make sure the selector switch is in the OFF position the rating plate. This appliance is not convertible for use with (Remote-Ready Models Only). Only a qualified service per- other gases. son should install, service, or repair heater. 2. Do not place propane/LP supply tank(s)
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OPTIONAL REMOTE CONTROL ACCESSORIES 4 LOCAL CODES UNPACKING PRODUCT FEATURES AIR FOR COMBUSTION AND VENTILATION Providing Adequate Ventilation OPTIONAL REMOTE CONTROL ACCESSORIES There are four optional remote controls that can be purchased SAFETY DEVICE separately for Remote-Ready Models Only: This heater has a pilot with an Oxygen Depletion Sensing (ODS) • wall switch • hand-held ON/OFF remote safety shutoff system. The ODS/pilot is a required feature for vent- • wall thermostat • hand-held th
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AIR FOR COMBUSTION AND VENTILATION 5 Providing Adequate Ventilation (Cont.) 5 Determining Fresh-Air Flow for Heater Location AIR FOR COMBUSTION AND VENTILATION Continued Unusually tight construction is defined as construction 2. Multiply the space volume by 20 to determine the maximum Btu/Hr where: the space can support. a. walls and ceilings exposed to the outside atmosphere __________ (volume of space) x 20 = (Maximum Btu/Hr the space have a continuous water vapor retarder with a rating can su
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AIR FOR COMBUSTION AND VENTILATION Ventilation Air 6 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 (s
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INSTALLATION 7 Check Gas Type 7 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 impuriti
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INSTALLATION Installation and Clearances for Vent-Free Operation (Cont.) 8 INSTALLATION Continued Carefully follow the instructions below. This will ensure safe noncombustible material behind it. Noncombustible material must installation into a masonry, UL127-listed manufactured fireplace, extend at least 8" up (for all models). If noncombustible material is or listed vent-free firebox. less than 12", you must install the fireplace hood accessory (24" and 30" Models Only). See Figure 5 for minim
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INSTALLATION 9 Mantel Clearances 9 Floor Clearances INSTALLATION Continued MANTEL CLEARANCES Mantel Shelf 10" Underside of In addition to meeting noncombustible material clearances, you must 8" Mantel Shelf also meet required clearances between fireplace opening and mantel 6" 1 shelf. If you do not meet the clearances listed below, you will need a hood. 2 /2" Determining Minimum Mantel Clearance All minimum distances are If you meet minimum clearance between mantel shelf and top of in inches fi
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INSTALLATION Installing Damper Clamp Accessory for Vented Operation 10 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- Note: When used as a vented heater, appliance must be installed place floor. If not, heater will move when you adjust only in a solid-fuel burning fireplace with a working flue and controls. Moving heater may cause a gas leak. constructed o
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INSTALLATION 11 Installing Heater Base Assembly (Cont.) 11 INSTALLATION Continued 3. Position heater base assembly in fireplace. 4. For Variable Manually-Controlled and Thermostatically-Con- trolled Models mark screw locations through holes in mount- Masonry ing brackets (see Figure 13). For Remote-Ready Models mark Screw screw locations through holes in front panel of base (see Fig- ure 14). If installing in a brick-bottom fireplace, mark screw locations in mortar joint of bricks. 5. Remove hea
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INSTALLATION Connecting To Gas Supply 12 INSTALLATION Continued Installation must include an equipment shutoff valve, union, and CONNECTING TO GAS SUPPLY plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figures 16 or WARNING: This appliance requires a 1/2" NPT 17 page 13, depending on your model). (National Pipe Thread) inlet connection to the pres- sure regulator. IMPORTANT: Install equipment shutoff valve in an accessible loca
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INSTALLATION 13 Connecting to Gas Supply (Cont.) 13 Checking Gas Connections INSTALLATION Continued CSA Design-Certified Equipment CHECKING GAS CONNECTIONS Shutoff Valve With 1/8" NPT Tap* PROPANE/LP From External WARNING: Test all gas piping and connections, Regulator internal and external to unit, for leaks after installing (11" W.C.** Approved Flexible or servicing. Correct all leaks at once. to 14" W.C. Gas Hose (if allowed Pressure) by local codes) WARNING: Never use an open flame to chec
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INSTALLATION Checking Gas Connections (Cont.) 14 Installing Logs INSTALLATION Continued Thermostat Gas Equipment Pressure Testing Heater Gas Connections Valve or Control Shutoff Valve 1. Open equipment shutoff valve (see Figure 18). Valve Location 2. Open main gas valve located on or near gas meter for natural gas or open propane/LP supply tank valve. 3. Make sure control knob of heater is in the OFF position. 4. Check all joints from equipment shutoff valve to thermostat Gas Meter gas valve (Th
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INSTALLATION 15 Installing Logs (Cont.) 15 INSTALLATION Continued Notch Groove in Peg Rear Log (#3) Back of Log Front Log (#1) Groove Grate in Back Prong of Log Rear Burner Grate Prong Grate Prongs Metal Grate Bar Figure 21 - Installing Front Log (#1) [18" Variable Manually- Controlled Set Shown] Middle Log (#2) Figure 23 - Installing Rear Log (#3) [18" Variable Manually- Controlled Set Shown] Crossover Log (#4) Groove Groove Metal Hole Post Cutout Peg Metal Post Grate Figure 22 - Installing Mid
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OPERATING HEATER (THERMOSTAT CONTROLLED MODELS) For Your Safety Read Before Lighting 16 Lighting Instructions OPERATING HEATER Note: Home owners generally prefer to operate their heater THERMOSTAT-CONTROLLED MODELS with the chimney damper closed. This will put all the heat into the room. However, there may be times you will desire the full FOR YOUR SAFETY READ flames of the HI heat setting but will find the heat output BEFORE LIGHTING excessive. You can open the chimney damper (if you have one)
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OPERATING HEATER (THERMOSTAT-CONTROLLED MODELS) 17 To Turn Gas Off To Appliance 17 Thermostat Control Operation Manual Lighting Procedure OPERATING HEATER (MANUALLY-CONTROLLED MODELS) For Your Safety Read Before Lighting OPERATING HEATER Continued 8. Turn control knob counterclockwise to desired MANUALLY-CONTROLLED MODELS heating level. The burners should light. Set control knob to any heat level between HI and LO. FOR YOUR SAFETY READ BEFORE LIGHTING CAUTION: Do not try to adjust heating leve
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OPERATING HEATER (MANUALLY-CONTROLLED MODELS) Lighting Instructions 18 Variable Control Operation OPERATING HEATER Continued 7. Keep control knob pressed in for 30 seconds after lighting LIGHTING pilot. After 30 seconds, release control knob. INSTRUCTIONS • If control knob does not pop out when released, contact a qualified service person or gas supplier for repairs. WARNING: Note: If pilot goes out, repeat steps 3 through 7. • If fireplace has glass doors, never operate this 8. Push in and tur
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OPERATING HEATER (MANUALLY-CONTROLLED MODELS) 19 To Turn Gas Off To Appliance 19 Manual Lighting Procedure OPERATING HEATER (REMOTE-READY MODELS) For Your Safety Read Before Lighting (Cont.) Lighting Instructions OPERATING HEATER Continued C. Use only your hand to push in or turn the gas control knob. TO TURN OFF GAS Never use tools. If the knob will not push in or turn by TO APPLIANCE hand, don’t try to repair it, call a qualified service techni- cian or gas supplier. Force or attempted repair
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O N O T OPERATING HEATER (REMOTE-READY MODELS) Lighting Instructions (Cont.) 20 To Turn Gas Off To Appliance Manual Lighting Procedure OPERATING HEATER Continued Ignitor 5. Wait five (5) minutes to clear out any gas. Then smell for Pilot Ignitor Pilot Electrode gas, including near the floor. If you smell gas, STOP! Fol- Burner Electrode Burner low “B” in the safety information, starting in column 2, page 19. If you don’t smell gas, go to the next step. 6. Press in and turn control knob countercl
