Pre-Installation - Dometic DF Serie Instructions D'installation

PRE-INSTALLATION

A. Identifying The Furnace Location
 Failure to obey the following warnings could result in property damage, serious injury, or death:
• Install the Furnace only in a location and position specified in these instructions .
• Provide adequate combustion and ventilation air to the Furnace space, as specified in these instructions .
• Combustion products must be discharged outdoors . Connect this Furnace to an approved vent system only, as specified in
these instructions .
• As specified in these instructions, always install the Furnace to operate within the Furnace's intended temperature-rise
range, with a duct system that has an external static pressure within the allowable range . Refer to the furnace rating plate .
• Do NOT install the Furnace near tilt-out rooms, slide-outs, and doors (refer to local codes for clearances), in an area where
wires, pipes, or other objects will interfere with the installation or operation of the Furnace, or in an area that is less than 12"
above a water heater (unless a heat shield is installed above the water heater) .
• Do NOT install the Furnace directly on combustible flooring that restricts return air . Examples of combustible flooring
include carpet, tile, soft material (like vinyl), or other combustible materials other than wood flooring .
• Do NOT install the Furnace where clearance to combustibles cannot be maintained . Excessive exposure to contaminated
combustion air will result in safety and performance-related problems .
The Furnace must be accessible for repairs .
Determining The Installation Type And Clearances Required
• Locate the Furnace near the midpoint of the RV, at least 3' from the gas service regulator, for a single-Furnace application . The
Furnace must be installed through an exterior wall . Spacing of 1/4" to ducting, within 3' of Furnace, must be provided unless
UL-listed, wire-bound, vinyl ducts are used . All ducting material used must be rated for continuous use at a minimum of 200 °F .
• Determine if you are using a horizontal or vertical installation .
• Horizontal Installation: locate the Furnace so that the gas line is at the top or rear of the Furnace .
• Vertical Installation: the Furnace top becomes the right side of the Furnace . Locate the Furnace so that the vent is at the
floor and the gas line is at the right or rear side .
• Identify the clearances required between the Furnace and the building materials surrounding the Furnace to allow for proper
airflow . Use the "Minimum Clearance To Combustibles" and the "Proper Return-Air Inlet Clearance" sections as guidelines .
Minimum Clearance To Combustibles
The minimum clearances allowed between the surface of the Furnace and combustible objects (board, wall, floor, etc) are shown in
the table .
The Furnace CANNOT be enclosed completely using these minimum dimensions .
CLEARANCE TO COMBUSTIBLES*
SM. & MED. VERTICAL/HORIZONTAL
LG. VERTICAL/HORIZONTAL
*Combustibles are carpet, vinyl, tile, plywood, or similar building materials.
Top Sides
1/2" 1/2"
1/2" 1"
6
Bottom
Rear
(To Screw Heads)
1/2" 0"
1/2" 0"