Magic Aire HCA 04, Инструкция по установке, эксплуатации и обслуживанию

Страница: 8 / 30

035-000049-001 Page 8 HCA IOM 1.1 8-28-2017
INSTALLATION—DUCTWORK
DUCTWORK CONNECTIONS
Install supply and return ductwork to the
unit as required for the application. Note
that free discharge or free return is ac-
ceptable.
Return Ductwork: Install return ductwork
by attaching one side of a field-provided
flexible duct connector to the duct flange
on the return side of the unit (filter side).
Attach the other side of the flexible duct
connector to the return ductwork. Seal the
connections using duct mastic or HVAC
tape.
Supply Ductwork—Unit Sizes 04-20: Install
supply ductwork by attaching one side of a field-
provided flexible duct to the fan discharge duct
collar on the front of the unit. Attach the other
side to the supply ductwork. Seal the connec-
tions using duct mastic or HVAC tape. Refer to
Figure 6.
NOTE: It is acceptable to omit the flexible duct
connectors, but this may allow normal operating
vibration or noise to transfer through the duct
system
leading to customer complaints.
Size all ductwork according to SMACNA and
ASHRAE duct design standards.
MIXING BOX INSTALLATION
Mixing box accessory connects to the return (air
inlet) flange on the rear of the unit. Refer to
Mixing Box Installation Instructions (available at
www.magicaire.com) for detailed instructions for
installation along with economizer controls and
damper installation.
Fig. 6 — HCA size 04 to 20
Duct Connections