Desa Tech CGR50PA manuale d’uso

Save this manual for future reference. VENTED PROP ANE GAS HEA TERS OWNER’S OPERA TION AND INST ALLA TION MANUAL 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 [...]

2 100793 CONTENTS SECTION PAGE Safety Information ......................................................................... 3 Product Identification .................................................................... 5 Local Codes ................................................................................... 6 Unpacking ......................[...]

3 100793 SAFETY INFORMA TION WARNING ICON G 001 W ARNINGS 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. WARNING ICON G 001 DANGER Car[...]

4 100793 SAFETY INFORMA TION Continued WARNING ICON G001 W ARNINGS Continued 7. 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 8. Do not run heater • where flammable liquids or vapors are used or stored[...]

5 100793 PRODUCT IDENTIFICA TION Lower Front Access Panel Control Knob Blower Switch (on models equipped with blower) Ignitor Button Burner Radiants Figure 1 - Vented Propane Gas Heater, Radiant Front Draft Hood Outlet for Venting System Blower (on models equipped with blower) Figure 2 - Vented Propane Gas Heater, Rear View Control Valve[...]

6 100793 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; Nation[...]

7 100793 INST ALLING HEA TER Continued LOCATING HEATER 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 are less than 48 inches from the front, 53 inches from the top, 12 inches from the right side and 6 inches from the left side[...]

8 100793 Note: Venting/chimney materials are not supplied with heater. VENTING HEATER INST ALLING HEA TER Continued WARNING ICON G001 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 chimn[...]

9 100793 INST ALLING HEA TER Continued VENTING HEATER (continued) WARNING ICON G 001 W ARNING Do not vent heater in any of the following ways (see Figure 4). 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 [...]

10 100793 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 100793 BULK PROPANE TANK VENT INST ALLING HEA TER Continued CONNECTING TO GAS SUPPLY WARNING ICON G001 CAUTION Never connect heater directly to the propane supply. This heater requires an external regulator (not sup- plied). Install the external regulator between the heater and propane supply. The installer must supply an external regulator. The[...]

12 100793 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 100793 INST ALLING HEA TER Continued CHECKING GAS CONNECTIONS Figure 8 - Manual Shutoff Valve P O On Position Off Position WARNING ICON G001 CAUTION Make sure external regulator has been installed between propane supply and heater. See guidelines under Con- necting to Gas Supply , page 11. WARNING ICON G001 W ARNING Never use an open flame to ch[...]

14 100793 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 9)[...]

15 100793 INST ALLING HEA TER Continued INSTALLING GLASS PANEL For Radiant Models Only 1. Locate the glass panel package inside the back of the heater. WARNING ICON G001 CAUTION Before installing glass panels, inspect the edges. If you notice any chips or cracks, do not install. If the surface on either side is deeply scratched, do not install. If [...]

16 100793 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 100793 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 100793 AIR FOR COMBUSTION AND VENTILA TION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Example 1: Locating Heater in Unconfined (Open) Area NOTICE An unconfined area has a minimum air volume of 50 cubic feet for each 1000 BTU/Hr input rating of all appliances in the area (cubic feet equals length x width x height of area). Include a[...]

19 100793 AIR FOR COMBUSTION AND VENTILA TION Continued Figure 15 - Ventilation Air from Outdoors Draft Hood Spillage: This is a hazardous situation. Draft hood spillage re- leases poisonous carbon monoxide gas into your home. WARNING ICON G001 DANGER Carbon monoxide poisoning may lead to death! If draft hood spillage occurs, check for blocked flue[...]

20 100793 AIR FOR COMBUSTION AND VENTILA TION Continued Example 2: Locating Heater in Confined (Closed) Area NOTICE A confined area has an air volume of less than 50 cubic feet for each 1000 BTU/Hr input rating of all appliances in the area (cubic feet equals length x width x height of area). Include adjoining rooms only if there are no doors betwe[...]

21 100793 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 100793 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. Remove lower front access panel on heater. 7. Turn control knob clockwise Clockwise to the PILOT position. Fu[...]

23 100793 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 7 under Lighting Instructions , pages 21 and 22. 4. With control knob depressed, strike match. Hold match to pilot until pilot lights. 5. Follow steps 9 through 13 under Lighting Inst[...]

24 100793 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 100793 Figure 21 - Correct Burner Flame Pattern Sharp Blue Flame Ragged Yellow Flame Flame Lifting Off of Burner Figure 22 - Incorrect Burner Flame Patterns If burner flame pattern is incorrect, as shown in Figure 22 • turn heater off (see To Turn Off Gas to Appliance , page 23) • see Troubleshooting , pages 27 through 31. INSPECTING PILOT A[...]

26 100793 WARNING ICON G 001 W ARNING Turn off heater and let cool before cleaning or servicing. WARNING ICON G 001 W ARNING Keep heater clear and free from combustible materials, gasoline, and other flammable vapors and liquids. WARNING ICON G 001 CAUTION You must keep control areas, burner, and circulating air passageways of heater clean. Inspect[...]

27 100793 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. WARNING ICON G001 CAUTION Never use a wire, needle, or similar object to clean pil[...]

28 100793 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 100793 POSSIBLE CAUSE 1. Manifold pressure is too low. 2. Burner orifice is clogged. 1. Burner orifice is clogged or damaged. 2. Burner damaged. 3. Gas regulator defective. 4. Delayed ignition. 1. Not enough air. 2. Gas regulator defective. 1. Burner orifice is clogged or damaged. 2. Manifold pressure too high/defective gas regulator 1. Residues[...]

30 100793 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 21). 2. Pilot flame needs adjusting. Contact a qualified service person. 3. Clean pilo[...]

31 100793 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 100793 SER VICE PROCEDURES WARNING ICON G 001 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 100793 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 100793 SER VICE PROCEDURES Continued 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 orifice holder. 6. Cl[...]

35 100793 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 Propane Only Propane Only Propane Only Ignition Piezo Piez[...]

36 100793 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 100793 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 100793 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. CGR65BPA CGR65PA CGR50BPA CGR50PA CGR35PA DESCRIPTION QTY. 1 099998-01 —— 099998-01[...]

39 100793 ILLUSTRA TED P ARTS LIST Cabinet Assembly for Radiant Models 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. CGR65BPA CGR65PA CGR50BPA CGR50PA CGR35PA DESCRIPTION QTY[...]

40 100793 ILLUSTRA TED P ARTS LIST Burner Assembly for Radiant Models 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 100793 P ARTS LIST Burner Assembly for Radiant Models PART NUMBER FOR KEY NO. CGR65BPA CGR65PA CGR50BPA CGR50PA CGR35PA DESCRIPTION QTY. 1 100729-03 100729-03 100729-02 100729-02 100729-01 Combustion Chamber 1 2 098324-02 098324-02 098324-02 098324-02 098324-02 Control Knob 1 3 097159-01 097159-01 097159-01 097159-01 097159-01 Piezo Ignitor 1 4 [...]

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100793-01 REV. D 11/94 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 2701 Industrial Drive P.O. Box 90004[...]