Desa VN2550ITA manuale d’uso

® Models: VN1800D, VN1800IT A, VN3000D, and VN2550IT A 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, personal injury, or loss of life. — Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or[...]

2 101822 CONTENTS SECTION PAGE Safety Information ......................................................................... 2 Product Identification .................................................................... 4 Local Codes ................................................................................... 4 Unpacking ......................[...]

3 101822 SAFETY INFORMA TION Continued WARNING ICON G 001 W ARNINGS Continued WARNING: Any change to this heater or its controls can be dangerous. 1. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases. 2. If you smell gas • Shut off gas supply. • Do not t[...]

4 101822 PRODUCT IDENTIFICA TION LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of National Fuel Gas Code ANSI Z223.1, also known as NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protection Association[...]

5 101822 FRESH AIR FOR COMBUSTION AND VENTILA TION WARNING ICON G 001 W ARNING 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 other fuel-burning appliances in your home. Today’s homes are built more energy efficient than ever.[...]

6 101822 FRESH AIR FOR COMBUSTION AND VENTILA TION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or[...]

7 101822 FRESH AIR FOR COMBUSTION AND VENTILA TION Continued Or Remove Door into Adjoining Room, Option 3 Ventilation Grills Into Adjoining Room, Option 2 12" 12" Ventilation Grills into Adjoining Room, Option 1 WARNING ICON G 001 W ARNING If the area in which the heater may be operated is smaller than that defined as an unconfined space,[...]

8 101822 FRESH AIR FOR COMBUSTION AND VENTILA TION Continued Figure 3 - Ventilation Air from Outdoors 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 ceiling and one within 12" of the floor. Connect these items directly to the outd[...]

9 101822 INST ALLING T O W ALL 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, do not install heater. Call dealer where you bought heater for proper type heater. INSTALLATION ITEMS Before installing heater, make sure you have the items listed belo[...]

10 101822 Figure 5 - Attaching 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 is available from your dealer. See Accessories , page 31. If planning to use fan, locate heater near an electrical outlet. Clamp T[...]

11 101822 Methods For Attaching Mounting Bracket To Wall Only use last hole on each end of mounting bracket to attach bracket to wall. These two holes are 16 inches apart from their centers. Attach mounting bracket to wall in one of two ways. 1. Attaching to wall stud 2. Attaching to wall anchor Attaching to wall stud This method provides the stron[...]

12 101822 Marking Screw Locations 1. Tape mounting bracket to wall where heater will be located. Make sure mounting bracket is level. Models VN3000D and VN2550ITA Models VN1800D and VN1800ITA Figure 8 - Mounting Bracket Clearances 2. Mark screw locations on wall (see Figure 8). Note: Only mark last hole on each end of mounting bracket. Insert mount[...]

13 101822 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 - Popping Open Anchor Wings For Thin Walls 5. Place mounting bracket onto wall. Line up last hole on each[...]

14 101822 CONNECTING T O GAS SUPPL Y NOTICE A qualified service person must connect heater to gas supply. Follow all local codes. Typical Pipe Diameters VN1800D or VN1800ITA 3/8" or greater VN3000D or VN2550ITA 1/2" or greater Installation must include a manual shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within rea[...]

15 101822 IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/or fittings. Tee Joint Reducer Bushing to 1/8" NPT 1/8" NPT Plug Tap Test Gauge Connection * Sediment Trap Tee Joint Pipe Nipple Cap Manual Shutoff Valve * 1/2" NPT Pipe Nipple Heater Cabinet Figure 13 - Gas Connection * An A.G.A. design cer[...]

16 101822 ON POSITION OFF POSITION Figure 14 - Manual Shutoff Valve Manual Shutoff Valve Open Closed Figure 15 - Checking Gas Joints Manual Shutoff Valve Gas Meter Control Valve Location 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. T[...]

17 101822 OPERA TING HEA TER Models VN1800IT A and VN2550IT A FOR YOUR SAFETY READ BEFORE LIGHTING WARNING ICON G 001 W ARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand. When lighting the pilot,[...]

18 101822 LIGHTING INSTRUCTIONS 1. STOP! Read the safety information at the top of page 17. 2. Make sure manual shutoff valve is fully open. 3. Turn thermostat control knob on left side of heater clockwise Clockwise to the OFF position. OPERA TING HEA TER Models VN1800IT A and VN2550IT A Continued IGNITOR PILOT LO OFF HI 1 2 3 4 Plaque Control Knob[...]

19 101822 1. Slightly press in plaque control knob on right side of heater and turn counterclockwise C-clockwise to the desired position. IMPORTANT: Release downward pressure while turning control knob. Control knob will lock at the desired position. 2. Turn thermostat control knob on left side of heater to any setting between LO and HI. Note: When[...]

20 101822 T O TURN OFF GAS TO APPLIANCE OPERA TING HEA TER Models VN1800IT A and VN2550IT A Continued Shutting Off Heater 1. Turn thermostat control knob clockwise Clockwise to the OFF position. 2. Turn off all electric power to the appliance if service is to be performed. Shutting Off Burner Only (pilot stays lit) 1. Turn thermostat control knob c[...]

21 101822 HIGH OFF LOW MED PILOT IGN IGNITOR OPERA TING HEA TER Models VN1800D and VN3000D FOR YOUR SAFETY READ BEFORE LIGHTING LIGHTING INSTRUCTIONS 1. STOP! Read the safety information above. 2. Make sure manual shutoff valve is fully open. 3. Turn control knob clockwise Clockwise to the OFF position. A. This appliance has a pilot which must be l[...]

22 101822 4. Wait five 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. 5. Press in control knob. Note: You may be running this heater for the first time after hooking up to gas supply. If[...]

23 101822 T O SELECT HEA TING LEVEL Figure 21 - Burner Patterns 1. Slightly press in control knob and turn counterclockwise C-clockwise to the LOW, MEDIUM, or HIGH positions. IMPORTANT: Release downward pressure while turning control knob. Control knob will lock at the desired position. OPERA TING HEA TER Models VN1800D and VN3000D Continued WARNIN[...]

24 101822 T O TURN OFF GAS TO APPLIANCE INSPECTING BURNER Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 22 shows a correct pilot flame pattern. Figure 23 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermo[...]

25 101822 BURNER FLAME PATTERN Figure 24 shows a correct burner flame pattern. Figure 25 shows an incorrect burner flame pattern. If burner flame pattern is incorrect, as shown in Figure 25 • turn heater off (see To Turn Off Gas to Appliance , page 20 [models VN1800ITA and VN2550ITA] or page 24 [models VN1800D and VN3000D]) • see Troubleshootin[...]

26 101822 CLEANING AND MAINTENANCE ODS/PILOT AND BURNER ORIFICE • 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 dampened with a mild soap and water mixture. Wipe the cabinet to remove dust. WARNING ICON G 00[...]

27 101822 OBSERVED PROBLEM When ignitor button is pressed in, there is a spark at ODS/pilot but no ignition. ODS/pilot lights but flame goes out when control knob is released TROUBLE- SHOOTING Continued REMEDY 1. Turn on gas supply or open manual shutoff valve. 2 . Fully press in control knob while pressing igni- tor button (non-thermo- stat models[...]

28 101822 OBSERVED PROBLEM Burner(s) does not light after ODS/pilot is lit. Delayed ignition of burner(s) Burner backfiring during combustion. Burner plaque(s) does not glow. Slight smoke or odor during initial opera- tion Heater produces a clicking/ticking noise just after burner is lit or shut off. REMEDY 1. Clean burner orifice(s) (see Cleaning [...]

29 101822 WARNING ICON G 001 W ARNING TROUBLE- SHOOTING Continued 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 canno[...]

30 101822 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. VN1800ITA VN2550ITA Btu (Variable) 6,600-18,000 7,000-25,500 Type Gas Natural Only Natural Only Ignition Piezo Piezo Pressure Regulator Setting 6" [...]

31 101822 FAN KITS - GA3100A and GA3200TA For all models. Provides better heat distribution. Makes heater more efficient. Complete installation and operating instructions included. Manually controlled - GA3100A. Includes ON/OFF switch. Thermostatically controlled - GA32000TA . Includes three settings: ON/OFF/AUTO. REPLACEMENT P ARTS Note: Use only [...]

32 101822 1 2 3 11 6 4 8 5 6 7 12 23 9 10 24 14 17 16 21 18 22 20 19 15 13 ILLUSTRA TED P ARTS BREAKDOWN Model VN1800IT A HEATER EXPLODED VIEW 23-19 23-18 ODS/PILOT ASSEMBLY A B C 23-1 23-2 23-3 23-4 23-5 23-7 23-6 23-8 23-12 23-16 23-11 23-15 23-10 23-17 23-14 23-13 23-9 BURNER ASSEMBLY[...]

33 101822 P ARTS LIST Model VN1800IT A This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 31 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 2 2 098742-13 Front Panel 1 3 098238-06 Grill Guard 1 4 101108-01 Clip-Grill G[...]

34 101822 HEATER EXPLODED VIEW 1 2 3 11 6 4 8 5 6 7 12 23 9 10 24 14 17 16 21 18 22 20 19 15 13 ILLUSTRA TED P ARTS BREAKDOWN Model VN2550IT A D C 23-1 23-2 23-3 23-8 23-16 23-17 23-11 B A 23-12 23-5 23-6 23-4 23-9 23-7 23-13 23-20 23-10 23-14 23-15 23-19 23-18 ODS/PILOT BURNER ASSEMBLY[...]

35 101822 P ARTS LIST Model VN2550IT A This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 31 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 2 2 098742-14 Front Panel 1 3 098238-07 Grill Guard 1 4 101108-01 Clip-Grill G[...]

36 101822 1 2 3 11 6 4 8 5 6 7 12 13 9 10 14 16 15 17 18 HEATER EXPLODED VIEW ILLUSTRA TED P ARTS BREAKDOWN Model VN1800D BURNER ASSEMBLY A B C 13-1 13-2 13-3 13-10 13-4 13-5 13-6 13-7 13-18 13-8 13-9 13-14 13-13 13-12 13-11 13-15 13-17 13-16 ODS/PILOT[...]

37 101822 P ARTS LIST Model VN1800D This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 31 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 2 2 098742-13 Front Panel 1 3 098238-06 Grill Guard 1 4 101108-01 Clip-Grill Guar[...]

38 101822 HEATER EXPLODED VIEW ILLUSTRA TED P ARTS BREAKDOWN Model VN3000D 13-17 13-16 ODS/PILOT BURNER ASSEMBLY E D C 13-1 13-2 13-3 13-9 13-4 13-5 13-7 13-6 13-18 13-8 13-10 13-14 13-13 13-12 13-15 13-11 B A 1 2 3 11 6 13 4 8 5 6 7 12 18 9 10 14 15 16 17[...]

39 101822 P ARTS LIST Model VN3000D This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 31 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 2 2 098742-14 Front Panel 1 3 098238-07 Grill Guard 1 4 101108-01 Clip-Grill Guar[...]

KEEP THIS WARRANTY W ARRANTY INFORMA TION 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. Model Serial No. Date Purchased LIMITED [...]