Desa CGR50BNA manuale d’uso

Save this manual for future reference. WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, per- sonal injury, or loss of life. FOR YOUR SAFETY — Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. — WHAT TO DO I[...]

2 100792 CONTENTS SECTION PAGE Safety Information ......................................................................... 3 Product Identification .................................................................... 5 Local Codes ................................................................................... 6 Unpacking ......................[...]

3 100792 SAFETY INFORMA TION Continued WARNING ICON G 001 W ARNINGS IMPORTANT: Read this owner’s manual carefully and completely be- fore 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. WARNING ICON G 00[...]

4 100792 SAFETY INFORMA TION Continued WARNING ICON G001 W ARNINGS Continued 6. Provide the following minimum heater clearances from combustibles (as viewed from the front of heater): Front: 48 inches Back: 6 inches Top: 53 inches Right Side: 12 inches Left Side: 6 inches 7. Do not run heater • where flammable liquids or vapors are used or stored[...]

5 100792 Lower Front Access Panel Control Knob Blower Switch (on models equipped with blower) Ignitor Button Burner Radiants Draft Hood Outlet for Venting System Blower (on models equipped with blower) Figure 2 - Vented Natural Gas Heater, Rear View Figure 1 - Vented Natural Gas Heater Control Valve PRODUCT IDENTIFICA TION[...]

6 100792 Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of the following: • National Fuel Gas Code ANSI Z223.1, also known as NFPA 54 * • National Electrical Code ANSI/NFPA 70 * *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National [...]

7 100792 INST ALLING HEA TER Continued LOCATING HEATER WARNING ICON G001 W ARNING Maintain the minimum clearances shown in Figure 3, below. If you can, provide greater clearances. WARNING ICON G001 W ARNING Never install the heater • in a mobile home or a recreational vehicle. • where curtains, furniture, clothing, or other flam- mable objects [...]

8 100792 Note: Venting/chimney materials are not supplied with heater. VENTING HEATER INST ALLING HEA TER Continued W ARNING When venting this heater, follow the safety information listed below. • Never vent heater to another room or inside a build- ing. Only vent heater to the outdoors. • Do not vent heater exhaust to a chimney or flue serving[...]

9 100792 INST ALLING HEA TER Continued Heater must be vented to the out- doors. Never vent heater to another room or inside a building. The vertical section of vent pipe must extend at least two feet above the highest point of any roof within ten feet. Never extend vent pipe horizontally through outside wall and terminate. You must connect a vertic[...]

10 100792 VENTING HEATER (continued) INST ALLING HEA TER Continued Proper Size Vent To safely vent heater, the vent connector pipe must be the same diameter as the draft hood outlet on the rear of the heater. Pipe that is too small can cause flue gas to spill from the heater. Fasten vent connector to the draft hood outlet with a sheet metal screw. [...]

11 100792 INST ALLING HEA TER Continued CONNECTING TO GAS SUPPLY The gas supply line to your heater must be 1/2 inch in diameter or larger. If the supply line branches to serve two or more heaters, the line from the branch back to the gas meter must be doubled or tripled, etc., in size (depending upon the number of heaters). Example for 1/2 inch di[...]

12 100792 Figure 7 - Gas Connection * An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessories , page 37. ** For purposes of input adjustment. Installation must include a manual sh[...]

13 100792 INST ALLING HEA TER Continued CHECKING GAS CONNECTIONS Pressure Testing Gas Supply Piping System Test Pressures In Excess of 1/2 PSIG 1. Disconnect heater and its individual manual shutoff valve from gas supply pipe. Pressures in excess of 1/2 PSIG will damage heater regulator. 2. Cap off open end of gas pipe where manual shutoff valve wa[...]

14 100792 INST ALLING HEA TER Continued INSTALLING RADIANTS WARNING ICON G001 W ARNING Carefully handle the glass panel. Glass edges are rounded and buffed to prevent cuts, however, chipped or broken sections of glass can present sharp edges. These sharp edges can cut skin. 1. Remove glass guard from across opening at front of heater (see Figure 8)[...]

15 100792 INST ALLING HEA TER Continued INSTALLING GLASS PANEL 1. Locate the glass panel package inside the back of the heater. Glass Panel Lower Front Access Area Screw Glass Guard Hearth Assembly Figure 11 - Inserting Glass Panels WARNING ICON G001 CAUTION Before installing glass panels, inspect the edges. If you notice any chips or cracks, do no[...]

16 100792 INST ALLING HEA TER Continued Figure 12 - Inserting Top Edge of Glass Panel into Upper Glass Retaining Channel WARNING ICON G 001 CAUTION Make sure you insert top edge of glass panels into the upper glass retaining channel. Do not install glass panels with top edge of glass in front of the upper glass retaining channel. Glass panels will [...]

17 100792 AIR FOR COMBUSTION AND VENTILA TION WARNING ICON G001 W ARNING This heater must have fresh air for proper operation. If not, poor fuel combustion and improper venting of flue gases will result. Carbon monoxide poisoning from backed-up flue gases could occur. Read the following instructions to insure proper fresh air for this and other fue[...]

18 100792 AIR FOR COMBUSTION AND VENTILA TION Continued Figure 14 - Checking for Draft Spillage No Draft Hood Spillage: This shows there is enough fresh air in area for appliances. Turn off all exhaust fans and appliances if desired. In the absence of local codes, use the following excerpts from the National Fuel Gas Code NFPA 54/ANSI Z223.1, Air f[...]

19 100792 AIR FOR COMBUSTION AND VENTILA TION Continued Figure 15 - Ventilation Air from Outdoors IMPORT ANT Do not provide openings for inlet or outlet air into attic if attic has a thermostat controlled power vent. Chimney or Gas Vent Outlet Air Ventilated Attic Outlet Air Inlet Air Inlet Air Ventilated Crawl Space To Crawl Space To Attic Continu[...]

20 100792 AIR FOR COMBUSTION AND VENTILA TION Continued After providing ventilation between rooms, check for draft hood spillage (see Draft Hood Spillage Test , page 18). If draft hood spillage still occurs, provide more ventilation between rooms or provide permanent ventilation from outdoors. See Providing Permanent Fresh-Air Ventilation , page 19[...]

21 100792 OPERA TING HEA TER A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. WHAT TO DO IF YOU SMELL GAS • Do[...]

22 100792 5. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information at the top of page 21. If you don’t smell gas, go to the next step. 6. Turn control knob clockwise Clockwise to the PILOT position. Fully depress control knob for five seconds. Not[...]

23 100792 MANUAL LIGHTING PROCEDURE 1. Remove lower front access panel on heater. 2. Locate pilot. Pilot is attached to the front of burner. 3. Follow steps 1 through 6 under Lighting Instructions , pages 21 and 22. 4. With control knob depressed, strike match. Hold match to pilot until pilot lights. 5. Follow steps 8 through 11 under Lighting Inst[...]

24 100792 INSPECTING PILOT AND BURNER FLAME Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 19 shows a correct pilot flame pattern. Figure 20 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will prevent the thermocouple from getting hot, causing the heater[...]

25 100792 INSPECTING PILOT AND BURNER FLAME Continued Sharp Blue Flame Ragged Yellow Flame Flame Lifting Off of Burner If burner flame pattern is incorrect, as shown in Figure 22 • turn heater off (see To Turn Off Gas to Appliance , page 21) • see Troubleshooting , pages 27 through 31. Figure 22 - Incorrect Burner Flame Patterns Figure 21 - Cor[...]

26 100792 CLEANING AND MAINTENANCE CABINET Air Passageways • Use a vacuum cleaner or pressurized air to clean. Exterior • Use a soft cloth dampened with a mild soap and water mixture. Wipe the cabinet to remove dust. COMBUSTION CHAMBER AND BURNER Clean the combustion chamber and burner if you have run the heater with a high yellow flame. Incomp[...]

27 100792 TROUBLE- SHOOTING Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed, there is no spark at pilot. When ignitor button is pressed, there is spark at pilot but no ignition. POSSIBLE CAUSE 1. Incorrect spark gap. 2. Ignitor electrode posi- tioned wrong. 3. Ignitor electrode broke[...]

28 100792 TROUBLE- SHOOTING Continued REMEDY 1. Fully open manual shut-off valve. 2. Press in control knob fully. 3. After pilot lights, keep control knob pressed in 30 seconds. 4 . Wait one minute for safety interlock system to reset. Repeat ignition. 5. Hand tighten until snug, then tighten 1/4 turn more. 6. A) Contact qualified service person to[...]

29 100792 OBSERVED PROBLEM Delayed ignition of burner. Burner backfiring during combustion. Yellow flame during burner combustion. Flame lifting during combustion. Slight smoke or odor during initial opera- tion. POSSIBLE CAUSE 1. Manifold pressure is too low. 2. Burner orifice is clogged. 1. Burner orifice is clogged or damaged. 2. Burner damaged.[...]

30 100792 OBSERVED PROBLEM Burner fails to respond to thermo- stat. Heater produces a whistling noise when burner is lit. Heater produces a clicking/ticking noise just after burner is lit or shut off. REMEDY 1. Light pilot burner (see Lighting Instructions , page 32). 2. Pilot flame needs adjusting. Contact a qualified service person. 3. Clean pilo[...]

31 100792 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 neighbor ’ s phone. Follow the gas supplier ’ s instructions. • If you cannot reach your gas supplier, call the fire department.[...]

32 100792 SER VICE PROCEDURES WARNING ICON G001 W ARNING Turn off and unplug heater and let cool before servicing. Unless you need gas supply for testing, shut off manual shutoff valve before servicing. Only a qualified service person should service and repair heater and venting system. Removing Control Valve and Burner Tube 1. Shut off gas supply [...]

33 100792 SER VICE PROCEDURES Continued Removing Burner 1. Shut off gas supply to heater. 2. Remove lower front access panel on heater. 3. Disconnect burner tube from orifice holder (see Figure 24). 4. Remove orifice holder from burner (see Figure 24). 5. Remove pilot burner bracket nuts and remove pilot assembly (see Figure 24). 6. Move burner to [...]

34 100792 SER VICE PROCEDURES Continued Figure 26 - Orifice Changing Burner Orifice 1. Shut off gas supply to heater. 2. Remove lower front access panel on heater. 3. Disconnect burner tube from orifice holder (see Figure 25). 4. Remove orifice holder from burner (see Figure 25). 5. Use socket or open-end wrench to remove the old orifice from the o[...]

35 100792 TECHNICAL SER VICE You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-800-323- 5190. 35,000 BTU/Hr 50,000 BTU/Hr 65,000 BTU/Hr Model Model Model BTU 35,000 50,000 65,000 Type Gas Natural Only Natural Only Natural Only Ignition Piezo Piez[...]

36 100792 Note: Use only original replacement parts. This will protect your warranty cover- age for parts replaced under warranty. Parts Under Warranty Contact your nearest dealer or call DESA International’s Technical Service De- partment at 1-800-323-5190. When calling DESA International, have ready • your name • your address • model numb[...]

37 100792 ACCESSORIES BLOWER KIT - PART NUMBER GA6010 For all models. Provides better heat distribution. Makes heater more efficient. Complete installation and operating instructions provided with blower. Purchase these heater accessories from your local dealer. If they can not supply these accessories, contact your nearest Parts Central (see page [...]

38 100792 ILLUSTRA TED P ARTS LIST Blower Assembly This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Ordering Replacement Parts on page 36 of this manual. 1 2 3 4 5 6 7 8 9 PART NUMBER FOR KEY NO. CGR65BNA CGR65NA CGR50BNA CGR50NA CGR35NA DESCRIPTION QTY. 1 099998-01 —— 099998-01[...]

39 100792 ILLUSTRA TED P ARTS LIST Cabinet Assembly This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Ordering Replacement Parts on page 36 of this manual. 1 2 3 4 5 6 6 7 8 11 6 10 9 PART NUMBER FOR KEY NO. CGR65BNA CGR65NA CGR50BNA CGR50NA CGR35NA DESCRIPTION QTY. 1 100202-03 10020[...]

40 100792 ILLUSTRA TED P ARTS LIST Burner Assembly 3 4 8 10 11 1 2 5 6 7 9 12 13 14 15 16 17 18 19 7 27 29 7 28 35 Model Only 6 50 and 65 Models 11 31 30 16 4 24 23 26 25 22 20 21[...]

41 100792 P ARTS LIST Burner Assembly This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Ordering Replacement Parts on page 36 of this manual. PART NUMBER FOR KEY NO. CGR65BNA CGR65NA CGR50BNA CGR50NA CGR35NA DESCRIPTION QTY. 1 100729-03 100729-03 100729-02 100729-02 100729-01 Combust[...]

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Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty. We make no other warranty, expressed or implied. W ARRANTY INFORMA TION 100792-01 REV. C 11/94 LIMITED WARRANTY COMFORT GLOW VENTED[...]