Page 2 - UNVENTED NATURAL GAS LOG HEATER; Carbon Monoxide Poisoning:; WARNINGS; DANGER: Carbon monoxide
2 107553 UNVENTED NATURAL GAS LOG HEATER For more information, visit www.desatech.com SAFETYINFORMATION Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu,with headaches, dizziness, or nausea. If youhave these signs, the heater may not be work-ing properly. Get fres...
Page 3 - OWNER’S MANUAL; OPERATION; UNPACKING; CAUTION: Do not remove the; Continued
3 107553 OWNER’S MANUAL For more information, visit www.desatech.com AU TO ON OFF COOLER W ARMER TEMP PRODUCTIDENTIFICATION Figure 1 - Yellow Flame Vent-Free Gas Log Heater Shown (Logs May Vary by Model) OPERATION This heater is clean burning. It requires nooutside venting. There is no heat loss out...
Page 4 - Unusually Tight Construction; per
4 107553 UNVENTED NATURAL GAS LOG HEATER For more information, visit www.desatech.com AIR FORCOMBUSTION ANDVENTILATION Today’s homes are built more energy effi-cient than ever. New materials, increasedinsulation, and new construction methodshelp reduce heat loss in homes. Home ownersweather strip an...
Page 5 - Determining if You Have a Confined or Unconfined Space
5 107553 OWNER’S MANUAL For more information, visit www.desatech.com AIR FORCOMBUSTION ANDVENTILATION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this work sheet to determine if you have a confined or unconfined space. Space: In...
Page 6 - Figure 3 - Ventilation Air from Outdoors; Ventilation Air From Outdoors; Do not provide openings for; Figure 2 - Ventilation Air from Inside Building
6 107553 UNVENTED NATURAL GAS LOG HEATER For more information, visit www.desatech.com AIR FORCOMBUSTION ANDVENTILATION Continued VENTILATION AIR Ventilation Air From InsideBuilding This fresh air would come from an adjoiningunconfined space. When ventilating to anadjoining unconfined space, you must...
Page 7 - CHECK GAS TYPE; LOG SIZING REQUIREMENTS; When installing your gas logs; *Minimum 16 inches from Side Wall
7 107553 OWNER’S MANUAL For more information, visit www.desatech.com INSTALLATION WARNING: A qualified ser- vice person must install heater.Follow all local codes. WARNING: Before installing in a solid fuel burning fireplace,the chimney flue and firebox mustbe cleaned of soot, creosote,ashes, and lo...
Page 8 - If Not Using Mantel; If using a mantel, go to If Using; Noncombustible; Noncombustible material okay.; Installing Damper; If Using Mantel; If you cannot meet these
8 107553 UNVENTED NATURAL GAS LOG HEATER For more information, visit www.desatech.com INSTALLATION Continued Heat ResistantMaterial (A) Minimum NoncombustibleMaterial Clearances If Not Using Mantel Note: If using a mantel, go to If Using Mantel. If not using a mantel, follow theinformation below. Yo...
Page 9 - Figure 6 - Minimum Mantel Clearances Without Using Hood; MANTEL CLEARANCES; flue damper open; FLOOR CLEARANCES; A. If installing appliance on the floor level,; Figure 7 - Minimum Mantel Clearances When Using Hood
9 107553 OWNER’S MANUAL For more information, visit www.desatech.com INSTALLATION Continued Figure 6 - Minimum Mantel Clearances Without Using Hood MANTEL CLEARANCES In addition to meeting noncombustible mate-rial clearances, you must also meet requiredclearances between fireplace opening andmantel ...
Page 10 - Installation Items Needed; Figure 10 - Attaching Damper Clamp; Damper; Manufactured Fireplace
10 107553 UNVENTED NATURAL GAS LOG HEATER For more information, visit www.desatech.com INSTALLATION Continued INSTALLING HEATER BASEASSEMBLY IMPORTANT: Make sure the heater burn- ers are level. If heater is not level, heater willnot work properly. WARNING: If installing in a sunken fireplace, specia...
Page 11 - CAUTION: Avoid damage to; INSTALLATION; WARNING: A qualified service; WARNING: Never connect; Figure 13 - Gas Connection
11 107553 OWNER’S MANUAL For more information, visit www.desatech.com CAUTION: Avoid damage to regulator. Hold gas regulator withwrench when connecting it to gaspiping and/or fittings. INSTALLATION Continued Continued CONNECTING TO GASSUPPLY WARNING: A qualified service person must connect heater to...
Page 12 - Figure 14 - Equipment Shutoff Valve; Figure 15 - Checking Gas Joints; WARNING: Never use an open; Correct all leaks at once.; Connect wires as shown in Figure 18.; Figure 17 - Installing Remote Receiver
12 107553 UNVENTED NATURAL GAS LOG HEATER For more information, visit www.desatech.com INSTALLATION Continued Figure 14 - Equipment Shutoff Valve ON POSITION OFF POSITION Open EquipmentShutoff Valve Figure 15 - Checking Gas Joints Gas Meter EquipmentShutoff Valve Thermostat GasValve or ControlValve ...
Page 13 - WARNING: Failure to position; CAUTION: After installation; Only use alkaline batteries.
13 107553 OWNER’S MANUAL For more information, visit www.desatech.com AU TO OFF ON 3 AU TO OFF ON INSTALLATION Continued AU TO OFF ON WARNING: Failure to position the parts in accordance with thesediagrams or failure to use onlyparts specifically approved withthis heater may result in propertydamage...
Page 15 - • If fireplace has glass doors,; WARNING: Damper handle; Figure 33 - Control Knob and Ignitor Button Location
15 107553 OWNER’S MANUAL For more information, visit www.desatech.com 1. STOP! Read the safety informationin columns 1 and 2. 2. Make sure equipment shutoff valveis fully open. 3. Set selector switch in the OFF position. WARNING: If you do not fol- low these instructions exactly, afire or explosion ...
Page 16 - CGHRC Series Operation:; Lighting; Shutting Off Heater; Ignitor Electrode; Thermostat Control Operation
16 107553 UNVENTED NATURAL GAS LOG HEATER For more information, visit www.desatech.com TO TURN OFF GAS TO APPLIANCE 1. Follow steps 1 through 6 under Light-ing Instructions, pages 15 and 16. 2. Depress control knob and light pilotwith match. 3. Keep control knob pressed in for 30seconds after lighti...
Page 17 - Figure 37 - Correct Pilot Flame Pattern; PILOT FLAME PATTERN; • turn heater off (see To Turn Off Gas to; MAIN BURNER; CGHRCTA Series Operation:; • In the AUTO mode, the thermostat
17 107553 OWNER’S MANUAL For more information, visit www.desatech.com OPERATINGHEATER Continued Thermocouple Pilot Burner Figure 37 - Correct Pilot Flame Pattern Figure 38 - Incorrect Pilot Flame Pattern INSPECTINGBURNERS Check pilot flame pattern and burner flamepatterns often. PILOT FLAME PATTERN ...
Page 18 - WARNING: Turn off heater; LOGS; When Gas Pressure Is Too Low; SERVICE HINTS; Injector Holder; Figure 40 - Pilot Inlet Air Hole
18 107553 UNVENTED NATURAL GAS LOG HEATER For more information, visit www.desatech.com CLEANING ANDMAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burner, and circu-lating air passageways of heaterclean. Inspect these areas ofheater before eac...
Page 19 - TROUBLESHOOTING; POSSIBLE CAUSE; All troubleshooting items are listed in
19 107553 OWNER’S MANUAL For more information, visit www.desatech.com Continued TROUBLESHOOTING WARNING: Turn off heater and let cool before servicing. Onlya qualified service person shouldservice and repair heater. CAUTION: Never use a wire, needle, or similar object to cleanODS/pilot. This can dam...
Page 20 - OBSERVED PROBLEM; nance, page 18) or replace burner orifice
20 107553 UNVENTED NATURAL GAS LOG HEATER For more information, visit www.desatech.com OBSERVED PROBLEM Burner does light after ODS/pilot is lit Delayed ignition burner Burner backfiring during combustion Slight smoke or odor during initial operation Moisture/condensation noticed on windows Heater p...
Page 21 - IMPORTANT
21 107553 OWNER’S MANUAL For more information, visit www.desatech.com TROUBLESHOOTING Continued WARNING: If you smell gas • 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...
Page 23 - PART NUMBER
23 107553 OWNER’S MANUAL For more information, visit www.desatech.com This list contains replaceable parts used in your heater. When ordering parts, follow the instructionslisted under Replacement Parts on page 26 of this manual. PARTS LIST CGD3924NRA KEYNO. PART NUMBER DESCRIPTION QTY. 1 103008-01 ...
Page 25 - KEY
25 107553 OWNER’S MANUAL For more information, visit www.desatech.com PARTS LIST CCL3924NRCCL3930NR KEY CCL3924NR CCL3930NR NO. PART NUMBER PART NUMBER DESCRIPTION QTY. 1 105923-03 105923-02 Front Log (#1) 1 2 105924-03 105924-02 Middle Log (#2) 1 3 105925-03 105925-02 Back Log (#3) 1 4 105926-03 10...
Page 26 - PARTS UNDER WARRANTY; PARTS CENTRAL
26 107553 UNVENTED NATURAL GAS LOG HEATER For more information, visit www.desatech.com Note: Use only original replacement parts. This will protect your warranty coverage forparts replaced under warranty. PARTS UNDER WARRANTY Contact authorized dealers of this product. Ifthey can’t supply original r...
Page 27 - FIREPLACE HOOD
27 107553 OWNER’S MANUAL For more information, visit www.desatech.com SPECIFICATIONS CGD3924NRA Btu (Variable) 20,000/39,000 Type Gas N a t u r a l G a sOnly Ignition Piezo Manifold Pressure 3.5" W.C. Inlet Gas Pressure (in. of water) Maximum 10.5" Shipping Weight 30 lbs. CCL3924NR Btu (Vari...
Page 28 - For information about this warranty write:; KEEP THIS WARRANTY; WARRANTY INFORMATION; Model; INTERNATIONAL; NOT A UPC
LIMITED WARRANTY COMFORT GLOW VENT-FREE NATURAL GAS LOG HEATERS DESA International warrants this product to be free from defects in materials and components for two (2) years from the date of firstpurchase, provided that the product has been properly installed, operated and maintained in accordance ...