www.hi-velocity.com
© 1995-2017 Energy Saving Products Ltd.
Module RAI
Return Air Installation (2/2)
Module RAI Return Air Installation (2/2)
The return air base provides a stand for the fan coil when placed
in vertical orientation, and provides an easy mounting location for
modular coils and filter racks. It can also be used as a transition and
mixing box for the return air. All return air bases come acoustically
lined with half-inch sound absorbing insulation.
Table RA-03 – Return Air Base dimensions
A
B
C
D
E
RA-50
22
1
/
2
”
(572mm)
18
1
/
2
”
(470mm)
14
1
/
2
”
(368mm)
21
1
/
2
”
(552mm)
1”
(25.4mm)
RA-70
22
1
/
2
”
(572mm)
18
1
/
2
”
(470mm)
19
1
/
2
”
(495mm)
21
1
/
2
”
(552mm)
1”
(25.4mm)
RA-100
22
1
/
2
”
(572mm)
18
1
/
2
”
(470mm)
25
1
/
2
”
(648mm)
21
1
/
2
”
(552mm)
1”
(25.4mm)
Energy Saving Products manufactures a return air base that
matches up to the fan coil units.
Return Air Base
For installation of Heating and Cooling Add-Ons, Refer to:
•
Module RPM - Refrigerant Module Installation
•
Module WCM - Chilled Water Coil Installation
•
Module HWC - Hot Water Coil Installation
•
Module ESH - Electric Strip Coil Installation
These manuals are included with the coils, and are also available
online at www.hi-velocity.com.
For filter options and other Add-Ons available from Energy
Saving Products, see Module OPT - Options and Add-Ons.
Once the return air has been cut out, a transition will be needed
to attach the return air duct to the fan coil (Fig. RA-03).
Fig. RA-02 – Return Air using a transition
A round or square return air duct can be used; they must be
sized for the Hi-Velocity Systems according to Table RA-01. Before
the return air can be attached to the transition, the first five feet
(from the fan coil) is to be acoustically lined for sound absorption.
When mounting additional components onto the back of the
unit, (Filter Rack, Return Air Base etc.) the hex head (a) screws (4
or 6 depending on unit size) can be replaced with flat head (b)
screws for a flush fit.
Mounting Additional Components
Fig. RA-03 – Hi-Velocity Return Air Base
-20-
A
D
C
B
E
