Desa DNV25NB manual

Save this manual for future reference. D YNA VENT  WINDOW W ALL FURNACE DIRECT -VENT NA TURAL GAS HEA TER OWNER’S OPERA TION AND INST ALLA TION MANUAL SOLID STATE IGNITION 50 60 70 80 90 50 60 70 80 90 DNV25NB DNV40NB 25,000 and 40,000 BTU/Hr “B” Model Furnaces FOR YOUR SAFETY Do not store or use gasoline or other flammable vapors and liqu[...]

2 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® gases will result. Carbon monoxide poisoning from backed-up flue gases could occur . The State of California lists carbon monoxide as a reproduc- tive toxin under Proposition 65. 7. Never install the furnace • in a recreational vehicle • in an alcove • on an inside wall • as a fireplac[...]

3 201835 OWNER’S MANUAL LOCAL CODES Install and use furnace with care. Follow all local codes. In the absence of local codes, use the latest edition of the following: • National Fuel Gas Code ANS Z223.1 , also known as NFP A 54 * (USA) • National Electric Code ANS/NFP A 70* • CAN/CGA-B149[.1 or .2] Installation Codes** (Canada). *Available [...]

4 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® 6" Minimum Adjacent Side Wall Ceiling Finished Floor, Carpet, Tile, etc. 12" Minimum 12" Minimum Figure 1 - Mounting Clearances as Viewed from Front of Furnace The clearance between the cabinet and the wall it passes through is 0 inches. Provide the following minimum clearances [...]

5 201835 OWNER’S MANUAL CREATING WALL OPENING AND MOUNTING FURNACE Remove furnace front cover. Remove the two screws at the lower edges of front cover. Lift front cover away. Installing in Normal Frame Wall The 25,000 BTU/Hr model is designed to fit between two wall studs set at 16 inch on center. The 40,000 BTU/Hr model will not fit between wall[...]

6 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® Locating Thermostat on Wall 1. Locate thermostat 4 1 / 2 to 5 feet above the floor on an inside wall away from any heat sources. The thermostat needs to sense average room temperature. A void the following: HO T SPOTS Concealed pipes or ducts Fireplaces Registers TV sets and radios Lamps or di[...]

7 201835 OWNER’S MANUAL 10. Feed thermostat wires from attic to furnace through 1/2" hole in ceiling wall plate. 1 1. Connect thermostat wires from attic to thermostat wires on furnace. Connect red wires together , then connect white wires together . Use wire nuts to make connections. IMPOR T ANT : Make sure thermostat wires do not touch com[...]

8 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® WARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once. Figure 14 - Inserting Pipe through Knockout Hole Figure 13 - Location of Knockout Plug Knockout Plug Connecting Furnace to Gas S[...]

9 201835 OWNER’S MANUAL Providing Gas Piping to Furnace You must provide gas piping from gas source to furnace. The gas piping must be in a vertical position where it connects to the furnace. This prevents interference with front cover installation. Consult your local gas company for proper routing of the gas lines. Pipe size is determined by the[...]

10 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® INST ALLA TION (Continued) CHECKING GAS CONNECTIONS WARNING: Test all gas pip- ing and connections for leaks after installation or servicing. Correct all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles formin[...]

11 201835 OWNER’S MANUAL O POSI P O Off Position On Position Figure 16 - Equipment Shutoff Valve Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa) 1. Close equipment shutoff valve (see Fig- ure 16). 2. Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter . 3 . Check all joints[...]

12 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® WARNING: Furnace burner, combustion chamber, and ex- haust port are very hot during operation. Keep children and adults away from hot surfaces to avoid burns and clothing igni- tion. Carefully supervise young children when they are in the same room as furnace. Furnace will remain hot for a ti[...]

13 201835 OWNER’S MANUAL OPERA TING FURNACE (Continued) 1. Set thermostat to lowest setting 2. T urn equipment gas v alve clockwise to OFF position. Do not for ce equipment gas valve. 3. Unplug furnace if service is to be per - for med. To Shut Down Furnace for an Extended Period of Time 1. T urn equipment gas v alve clockwise to OFF position. Do[...]

14 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® WARNING: Turn off and un- plug furnace and let cool before cleaning. Turn equipment shutoff valve to OFF position. Only a qualified service person should service and repair furnace. WARNING: Keep furnace clear and free from combustible mate- rials, gasoline, and other flam- mable vapors and l[...]

15 201835 OWNER’S MANUAL TROUBLESHOOTING WARNING: Turn off and unplug furnace and let cool before servic- ing. Unless you need gas supply for testing, shut off equipment shutoff valve before servicing. Only a qualified service person should service and repair furnace. Continued www.desatech.com Note: For additional help, visit DESA International?[...]

16 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® TROUBLESHOOTING Continued www.desatech.com The electronic system is made up of two parts: the ignition control and the glo bar. The ignition control is the brain of the elec- tronic system. It has several functions: 1. When the blower reaches full r .p.m., a 24-volt circuit is completed to th[...]

17 201835 OWNER’S MANUAL www.desatech.com OBSERVED PROBLEM Ignition failures POSSIBLE CAUSE 1. Glo bar will not glow - with blower run- ning and microswitch engaged 2. Glo bar glows but burner will not come on 3. Glo bar operating and gas valve open- ing but burner will not light 4. If the ignitor remains on after main burner ignition or the valv[...]

18 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® www.desatech.com OBSERVED PROBLEM Ignition failures Excessive noise Main burner will not cycle off Furnace will not operate POSSIBLE CAUSE 5. Burner cycles off and glo bar comes on immediately , check the following: 1. Blower out of balance 2. Motor hums 1. Thermostat setting 2. Gas valve stu[...]

19 201835 OWNER’S MANUAL 1 2 3 4 5 6 7 Junction Box Black Green ▲ White Black White White Black Transformer White Brown Brown Black Motor Green 370 V.A.C. Capacitor 5 MFD Terminal Block Black Thermostat White Red Black Yellow Blue Brown Green Black Brown White Ignition Control Board Probe ♦ Black White White Glo-Bar Gas Valve Time Delay Relay[...]

20 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® These Parts Centrals are privately owned businesses. They have agreed to support our customer’s needs by providing original replacement parts and accessories. For certain parts, some Parts Centrals may refer you to a dealer in your area. When calling a Parts Central, ask for the Parts Depar[...]

21 201835 OWNER’S MANUAL KEY PART NO. NUMBER DESCRIPTION QTY. 1 030643 Front Cover Assembly 1 2 121520 Screw, #8 x 3/8" ** 2 3 191240 Front Cover Trim* 1 4 160912 Thermostat 1 5 100892 Cabinet Assembly 1 6 070509 Cabinet Insulation (right and left sides) 1 7 121224 Screw, #10 x 3/4" ** 4 8 062242 Thermostat Mounting Plate 1 ∆ 070542 C[...]

22 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® ILLUSTRA TED P AR TS LIST CABINET ASSEMBLY 40,000 BTU/HR MODEL This list contains replaceable parts used in your furnace. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. 2 5 6 1 7 4 9 8 10 SOLID STATE IGNITION 50 60 70 80 90 50 60 70 80 9[...]

23 201835 OWNER’S MANUAL ILLUSTRA TED P AR TS LIST COMBUSTION CHAMBER ASSEMBLY 25,000 BTU/HR MODEL This list contains replaceable parts used in your furnace. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 121357 Screw, #6 x 5/8" ** 4 2 231955 Wire [...]

24 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® ILLUSTRA TED P AR TS LIST COMBUSTION CHAMBER ASSEMBLY 40,000 BTU/HR MODEL This list contains replaceable parts used in your furnace. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 121502 Screw, #6 x[...]

25 201835 OWNER’S MANUAL ILLUSTRA TED P AR TS LIST BURNER ASSEMBLY 25,000 BTU/HR MODEL This list contains replaceable parts used in your furnace. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. 1 2 3 4 5 6 7 8 9 10 11 12 KEY PART NO. NUMBER DESCRIPTION QTY. 1 120717 Hex Nut, #10-24 ** 2 2 121[...]

26 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® ILLUSTRA TED P AR TS LIST BURNER ASSEMBLY 40,000 BTU/HR MODEL This list contains replaceable parts used in your furnace. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 120717 Hex Nut, #10-24 ** 4 2 [...]

27 201835 OWNER’S MANUAL ILLUSTRA TED P AR TS LIST BLOWER ASSEMBLY 25,000 BTU/HR MODEL This list contains replaceable parts used in your furnace. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 350086 Room Air Wheel 1 2 121252 Screw, #10 x 3/8" ** 5[...]

28 201835 DIRECT -VENT NA TURAL GAS HEA TER DYNA VENT ® ILLUSTRA TED P AR TS LIST BLOWER ASSEMBLY 40,000 BTU/HR MODEL This list contains replaceable parts used in your furnace. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 070570 Combustion Air Cover Ga[...]

29 201835 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _____________________________[...]

201835 Rev. F 03/00 LIMITED WARRANTY DYNAVENT GAS WALL FURNACE DESA International warrants this product to be free from defects in materials and components for one (1) year and five (5) years on the combustion chamber/heat exchanger assembly from the date of first purchase, provided that the product has been properly installed, operated and maintai[...]