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DV425TR DIRECT VENT ROOM HEATER
02/01 Page 3 250-5533
LISTINGS AND CODE APPROVALS
The Dovre DV425TR Direct Vent Gas Appliance is listed to ANSI standard Z21.88(b)-1999/CSA 2.33b-M99 Vented Gas Fireplace
Heaters and applicable sections of UL307b Gas Burning Heating Appliances for Manufactured Homes and Recreational Vehicles,
CAN/CGA 2.17-M91 "Gas Fired Appliances for use at High Altitudes," by OMNI-Test Labs, Inc., Beaverton, OR.
SPECIFICATIONS
Natural Gas Propane
†0-2000' †0-2000'
Top Vent:
Input Rate on "HI" (BTU/Hr) 30,000 30,000
Input Rate on "LO (Btu/Hr) 21,000 24,500
Max. Output (BTU/Hr)** 25,000 24,600
Main Burner Orifice .1065 (36 DMS) .0635 (52 DMS)
Rear Vent:
Input Rate on "HI" (BTU/Hr) 26,000 26,000
Input Rate on "LO" (BTU/Hr) 18,000 20,000
Main Burner Orifice .0960 (41 DMS) .0595 (53 DMS)
Min. Inlet Pressure (Inches W.C.) 4.5" 11"
Max. Inlet Pressure (Inches W.C.) 7.0" 14"
Manifold Pressure on "HI" (Inches W.C.) 3.5" 10"
**Max Venting, Blower ON
†This appliance is equipped for altitudes 0-2000' (0-610 M) in USA: and in Canada for Altitudes of 0-4500' (0-1370 M). In
USA for Altitudes above 2000', the vent configuration, orifice, or combination of both may need to be changed. See page
49 of this manual for information on making these changes.
Failure to follow all of the required installation procedures may result in property damage, bodily injury or
even death. This appliance must be installed in accordance with all local codes, or, in the absence of local
codes, with the National Fuel Gas Code, ANSI Z223.1, or the Canadian Installation Code, CAN/CGA 149.
Manufactured Home or Mobile Home installation may occur only after the home is site located and must
conform with the Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280, or, when
such a standard is not applicable, the Standard for Manufactured Home Installations, ANSI/INCSBCS A225.1,
or Standard for Gas Equipped Recreational Vehicles and Mobile Housing, CSA Z240.4.
When installed, the appliance must be electrically grounded in accordance with local codes or, in the
absence of local codes, with the National Elecrical Code, ANSI/NFPA 70, or the Canadian Electrical Code,
CSA C22.1.
The Dovre DV425TR is manufactured to operate on Natural Gas (NG), it is convertible to Liquid Propane
(LP) when the manufacturer's conversion kit, part #844-9010 is used.
All exhaust gases must be vented outside the structure of the living-area. Combustion air is drawn from
outside the living-area structure.
Notify your insurance company prior to connecting gas to this fireplace.
Installation requirements diagrammed and explained in this manual are grouped into segments for ease
of procedure. While these requirements must be met fully, the order of installation may be subject to the
procedure best suited for your specific placement of the fireplace.
NOTE: Illustrations throughout these instructions reflect typical installations and are for design purposes only. Actual
installation may vary slightly due to individual design preferences. However, minimum and maxmum clearances must be
maintained at all times.
The illustrations and diagrams used throughout these installation instructions are not drawn to scale.
NOTICES