Dometic DFSD12 User Manual

7
PRE-INSTALLATION
Proper Return-Air Inlet Clearance
When a furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space
containing the furnace, the return air shall also be handled by duct(s) sealed to the furnace casing and terminating outside the space
containing the furnace. Failure to do so could result in property damage, serious injury, or death.
Furnaces MUST have at least the Minimum Return Air detailed in section “A. Model Specifications” on page 4 and
page 5.
FIG.1
(Horizontal installation)
(Vertical Installation)
Vertical Wall
(Either Side
Of Furnace)
Horizontal Wall
Vertical Wall
If one wall is close
to the Return-Air
Inlet, there MUST
be at least 2"
clearance from the
TOP or Inlet SIDE.
2"
2"
2"
2"
Horizontal Wall
FIG.2
(Horizontal Installation)
(Vertical Installation)
Vertical Wall
If 2 or more walls are
close to the Return-Air
Inlet, there MUST be at
least 3" clearance from
the TOP and Inlet SIDE.
3"
3"
3"
3"
3"
Horizontal Wall
Horizontal Wall
Vertical Wall

Dometic DFSD12 Specifications

General

Brand	Dometic
Model	DFSD12
Category	Furnace
Language	English