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Manual Desa DNV25NB

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  • Desa DNV25NB - page 1

    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 ...

  • Desa DNV25NB - page 2

    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 ...

  • Desa DNV25NB - page 3

    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 ...

  • Desa DNV25NB - page 4

    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 ...

  • Desa DNV25NB - page 5

    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 ...

  • Desa DNV25NB - page 6

    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 ...

  • Desa DNV25NB - page 7

    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 ...

  • Desa DNV25NB - page 8

    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 ...

  • Desa DNV25NB - page 9

    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 ...

  • Desa DNV25NB - page 10

    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 ...

  • Desa DNV25NB - page 11

    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 ...

  • Desa DNV25NB - page 12

    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 ...

  • Desa DNV25NB - page 13

    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 ...

  • Desa DNV25NB - page 14

    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 ...

  • Desa DNV25NB - page 15

    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? ...

  • Desa DNV25NB - page 16

    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 ...

  • Desa DNV25NB - page 17

    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 ...

  • Desa DNV25NB - page 18

    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 ...

  • Desa DNV25NB - page 19

    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 ...

  • Desa DNV25NB - page 20

    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 ...

  • Desa DNV25NB - page 21

    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 ...

  • Desa DNV25NB - page 22

    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 ...

  • Desa DNV25NB - page 23

    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 ...

  • Desa DNV25NB - page 24

    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 ...

  • Desa DNV25NB - page 25

    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 ...

  • Desa DNV25NB - page 26

    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 ...

  • Desa DNV25NB - page 27

    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 ...

  • Desa DNV25NB - page 28

    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 ...

  • Desa DNV25NB - page 29

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

  • Desa DNV25NB - page 30

    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 ...

Manufacturer Desa Category Electric Heater

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A complete manual for the device Desa DNV25NB, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Desa DNV25NB by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Desa DNV25NB.

A complete Desa manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Desa DNV25NB - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Desa DNV25NB, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Desa DNV25NB, that we can find in the current document
3. Tips how to use the basic functions of the device Desa DNV25NB - which should help us in our first steps of using Desa DNV25NB
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Desa DNV25NB
5. FAQ - Frequently Asked Questions
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