Desa Tech BLUE-FLAME A Owner's Operation And Installation Manual

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[Page 1] Desa BLUE-FLAME A

BLUE-FLAME VENT-FREE NATURAL GAS HEATER OWNER’S OPERATION AND INSTALLATION MANUAL Heater Sizes: 18,000 BTU/Hr Non-Thermostat, 18,000 BTU/Hr Thermostat, and 28,000 BTU/Hr Thermostat “A” Model Heaters Save this manual for future reference. WARNIN...

[Page 2] Desa BLUE-FLAME A

2 099569 CONTENTS SECTION PAGE SAFETY INFORMATION WARNING ICON G 001 WARNINGS 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 ...

[Page 3] Desa BLUE-FLAME A

3 099569 SAFETY INFORMATION Continued WARNING ICON G 001 WARNINGS Continued WARNING: Any change to this heater or its controls can be dangerous. 1. Use only natural gas. Do not convert heater to use different fuel type. 2. If you smell gas • sh...

[Page 4] Desa BLUE-FLAME A

4 099569 PRODUCT IDENTIFICATION LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of the National Fuel Gas Code ANSI Z223, also known as NFPA 54*. *Available from: American Nat...

[Page 5] Desa BLUE-FLAME A

5 099569 FRESH AIR FOR COMBUSTION AND VENTILATION WARNING ICON G 001 WARNING This heater must have fresh air for proper operation. If not, poor fuel combustion could result. Read the following instructions to insure proper fresh air for this and o...

[Page 6] Desa BLUE-FLAME A

6 099569 FRESH AIR FOR COMBUSTION AND VENTILATION Continued WARNING ICON G001 WARNING You must provide additional ventilation air in a confined space. DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined ...

[Page 7] Desa BLUE-FLAME A

7 099569 FRESH AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must provide two per...

[Page 8] Desa BLUE-FLAME A

8 099569 FRESH AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR (Continued) Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. You must provide two perma- nent openings: one within 12" of the...

[Page 9] Desa BLUE-FLAME A

9 099569 INSTALLING TO WALL NOTICE A qualified service person must install heater. Follow all local codes. CHECK GAS TYPE Use only natural gas. If your gas supply is not natural gas, do not install heater. Call dealer where you bought heater for prop...

[Page 10] Desa BLUE-FLAME A

10 099569 Figure 5 - Attaching Thermostat Sensing Bulb Clamp Thermostat Sensing Bulb For convenience and efficiency, install heater • where there is easy access for operation, inspection, and service • in coldest part of room An optional fan kit ...

[Page 11] Desa BLUE-FLAME A

11 099569 INSTALLING HEATER TO WALL Mounting Bracket The mounting bracket is located on back panel of heater. It has been taped there for shipping. Remove mounting bracket from back panel. Continued Methods For Attaching Mounting Bracket To Wall Only...

[Page 12] Desa BLUE-FLAME A

12 099569 Marking Screw Locations 1. Tape mounting bracket to wall where heater will be located. Make sure mount- ing bracket is level. 28,000 BTU/Hr Model 18,000 BTU/Hr Models 2. Mark screw locations on wall (see Figure 8). Note: Only mark last hol...

[Page 13] Desa BLUE-FLAME A

13 099569 4. For thin walls (1/2" or less), insert red key into wall anchor. Push red key to “pop” open anchor wings. IMPORTANT: Do not hammer key! For thick walls (over 1/2" thick) or solid walls, do not pop open wings. Figure 10 - P...

[Page 14] Desa BLUE-FLAME A

14 099569 CONNECTING TO GAS SUPPLY NOTICE A qualified service person must connect heater to gas supply. Follow all local codes. Typical Pipe Diameters 18,000 BTU/Hr Models 3/8" or greater 28,000 BTU/Hr Model 1/2" or greater Installation mus...

[Page 15] Desa BLUE-FLAME A

15 099569 IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/or fittings. Pressure Regulator Tee Joint Reducer Bushing to 1/8" NPT 1/8" NPT Plug Tap Test Gauge Connection * Tee Joint Pipe Nipple Cap 1/2&qu...

[Page 16] Desa BLUE-FLAME A

16 099569 ON POSITION OFF POSITION 4. Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak. 5. Correct all leaks at once. Test Pressures Equal To or Less Than 1/2 PSIG 1. Clos...

[Page 17] Desa BLUE-FLAME A

17 099569 OPERATING HEATER Thermostat Models FOR YOUR SAFETY READ BEFORE LIGHTING 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 applian...

[Page 18] Desa BLUE-FLAME A

18 099569 4. 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 17. If you don’t smell gas, go to the next step. 5. Turn cont...

[Page 19] Desa BLUE-FLAME A

19 099569 TO TURN OFF GAS TO APPLIANCE OPERATING HEATER Thermostat Models Continued Shutting Off Heater 1. Turn control knob clockwise Clockwise to the OFF position. 2. Turn off all electric power to the appliance if service is to be performed. Shu...

[Page 20] Desa BLUE-FLAME A

20 099569 OPERATING HEATER Non-Thermostat Model FOR YOUR SAFETY READ BEFORE LIGHTING 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 appl...

[Page 21] Desa BLUE-FLAME A

21 099569 4. 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 20. If you don’t smell gas, go to the next step. 5. Press in ...

[Page 22] Desa BLUE-FLAME A

22 099569 Shutting Off Heater 1. Turn control knob clockwise Clockwise to the PILOT position. 2. Press in control knob and turn clockwise Clockwise to the OFF position. 3. Turn off all electric power to the appliance if service is to be performed...

[Page 23] Desa BLUE-FLAME A

23 099569 1/2 GLASS HEIGHT INCORRECT FLAME PATTERN AT HIGH POSITION If pilot flame pattern is incorrect, as shown in Figure 21 • turn heater off (see To Turn Off Gas to Appliance, page 19 [thermostat models] or page 22 [non-thermostat model]) • s...

[Page 24] Desa BLUE-FLAME A

24 099569 CLEANING AND MAINTENANCE ODS/PILOT AND BURNER • Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean. CABINET Air Passageways • Use a vacuum cleaner or pressurized air to clean. Exterior • Use a soft cloth dam...

[Page 25] Desa BLUE-FLAME A

25 099569 REMEDY 1. Turn on gas supply or open manual shutoff valve 2. Turn control knob to PILOT position 3. Press in control knob while in PILOT position 4. Continue holding down control knob. Repeat igniting operation until air is removed 5. Clean...

[Page 26] Desa BLUE-FLAME A

26 099569 TROUBLE- SHOOTING Continued OBSERVED PROBLEM Burner does not light after ODS/pilot is lit Delayed ignition of burner Burner backfiring during combustion Yellow flame during burner combustion Slight smoke or odor during initial opera- tion H...

[Page 27] Desa BLUE-FLAME A

27 099569 TROUBLE- SHOOTING Continued WARNING ICON G 001 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 y...

[Page 28] Desa BLUE-FLAME A

28 099569 TECHNICAL SERVICE You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-800-323- 5190. 18,000 BTU/Hr 28,000 BTU/Hr Models Model B.T.U (Varia...

[Page 29] Desa BLUE-FLAME A

29 099569 REPLACEMENT PARTS Note: Use only original replacement parts. This will protect your warranty cover- age for parts replaced under warranty. Parts Under Warranty Contact authorized dealers of this product. If they can’t supply original rep...

[Page 30] Desa BLUE-FLAME A

30 099569 ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, either contact your nearest Parts Central (see page 29) or call DESA International’s Parts Department at 1-800-972-7879 for in...

[Page 31] Desa BLUE-FLAME A

31 099569 ILLUSTRATED PARTS LIST Manual Control 18,000 BTU/Hr Non- Thermostat Model (Parts list on page 33) 12 ODS/Pilot Assembly (Parts list on page 33) 26 24 34 19 29 33 20 12-1 12-2 ...

[Page 32] Desa BLUE-FLAME A

32 099569 1 2 3 4 5 6 7 8 9 10 10 11 12 13 14 15 16 17 19 20 21 22 23 24 25 26 27 28 30 31 32 18 NOTE: Thermostat Gas Valve Shown. See page 31 for Manual Control Valve. ...

[Page 33] Desa BLUE-FLAME A

33 099569 PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 29 of this manual. PART NUMBER FOR KEY 18,000 BTU/Hr 18,000 BTU/Hr 28,000 BTU/Hr NO. No...

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34 099569 NOTES ...

[Page 35] Desa BLUE-FLAME A

35 099569 NOTES ...

[Page 36] Desa BLUE-FLAME A

LIMITED WARRANTY BLUE-FLAME VENT-FREE NATURAL GAS HEATERS DESA International warrants this product to be free from defects in materials and components for one (1) year from the date of first purchase, provided that the product has been properly insta...