Air Distribution Duct Sizing And Design; Air Distribution System Installation; Laying The Connecting Cables - Furrion CHILL FACR13HESA Serie Manuel De L'utilisateur

⁄ " Min.
(19.05 mm)

Air Distribution Duct Sizing and Design

The installer of this system must design the air distribution
system for their particular application.
NOTE: Make sure ductwork will NOT bend or collapse during
and after installation, and that it is correctly insulated and
sealed. Otherwise, damage to roof structure and ceiling could
occur.
The following requirements must be met for properly operate
the unit:
Roof Cavity Depth 3.5"-6" (89mm-152mm)
Duct Cross
21 Sq. In. Min.
Sectional Area
Depth
Width
Duct Size
Total Duct Length
Duct Length (short run)
Number Required
Supply Register Free
Air Area
Register
Return Register Free
Requirements per
Air Area
A/C Unit
Distance From Duct
End
Distance From Elbow
Total System Static Blower at High Speed,
Air Pressure Filter & Grille In Place
●
Properly insulate and seal all discharge air ducts to prevent
condensation from forming on their surfaces or adjacent
surfaces during operation of the unit. This insulation must
be R-7 minimum.
Duct
TOP VIEW (BACK OF RV)
Roof
Duct
SIDE VIEW (TOWARD BACK OF RV)
CCD-0005773 Rev: 04-25-22
Leave access for
power supply wiring
11/2" Min. - 21/2" Max. (38mm
Min. - 63.5mm Max.)
7" Min. - 10" Max. (178mm
Min. - 254mm Max.)
15Ft. Min. - 40Ft. Max. (4.5m
- 13m)
1/3 Total Duct Length
4 Min. - 8 Max.
14 Sq. In. (90 sq. cm)
40 Sq. In. (258 sq. cm)
5" Min. - 8" Max. (127mm
Min. - 203mm Max.)
15" (381mm)
0.55 - 1.10 In. W.C.
Frame
Duct
Roof
Opening
Frame
Frame
Roof Opening
Duct
Ceiling
●
Return air openings must have 80 square inches (516
square centimeters) minimum free area including the filter.
●
Return air to the unit must be filtered to prevent dirt
accumulation on the unit cooling surface.

Air Distribution System Installation

It is the responsibility of the installer to review each RV floor
plan to determine the following items in conjunction with "Air
Distribution Duct Sizing and Design" section
NOTE: Alternate configurations and methods may be used
which will allow the unit to operate properly, however, these
alternate configurations and methods MUST be approved by
Furrion in writing.
●
Duct size
●
Duct layout
●
Register size
●
Register location
●
Thermostat location
●
Indoor temperature sensor location (if applicable)
Registers 4
Min - 8 Max.
(Per Unit) 14
Sq. In. Free
Area Per
Register
Air Conditioner

Laying the Connecting Cables

The rooftop air conditioner must be connected to an electric
circuit which is able to supply the required power supply (see
chapter "Specification").
NOTE: The supply wire must be located in the front portion of
the roof opening. The power supply must be equipped with a
time delay fuse or circuit breaker. See rooftop unit nameplate
for rating.
Electrical Shock Hazard
●
Disconnect power before servicing. Failure to obey this
warning could result in death or serious injury.
●
Provide grounding in compliance with all applicable
electrical codes. Failure to obey this warning could result
in death or serious injury.
Refer to the applicable electric code guidelines for sizing the
appropriate wire gauge, length and type.
1. Route a 115VAC supply wire with ground wire from the time
delay fuse or circuit breaker box to the roof opening.
NOTE: Refer to rooftop unit nameplate and applicable
code for proper installation.
2. Use approved method to protect the wire where it passes
through the opening.
3. Feed the 115VAC cable through the opening into the
vehicle interior. Make sure at least 15" (381mm) of supply
wire extends into the roof opening. This ensures an easy
connection at the control box.
- 5 -
Front
Return Air
DANGER