Owner's Manual

Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • [phone] • www.heatcontroller.com
5 Variable Speed Air Handlers Installation & Owners Manual
Air Handler Installation Instructions
Electric and Hydronic
UPFLOW APPLICATION:
In an upflow installation the discharge outlet is at the top.
Care should be taken to insure unit is level to permit
proper condensate drainage. Normal upflow installation
will be in a closet or basement. If installed in a closet, the
closet should have a platform framed in, with an opening
at the top of the platform centered in the closet. Connect
the supply air outlet to a plenum. Install
return air grilles
from outside the closet to space below the platform.
Platform must be at least 12” above the floor. If installed
in a basement, run supply and return duct work in
accordance with local codes.
HORIZONTAL APPLICATION:
Horizontal applications will normally be used in an attic or
crawl space. This type of installation requires a return air
duct be attached to the unit inlet. The opposite end of the
return air d
uct is attached to a return air filter grille through
the ceiling or wall. Remove air filter from unit if filter
grille is used. The unit is shipped in right to left
configuration. For left to right applications (before
connecting drains, refrigerant or water piping) remove coil
and doors and move horizontal pan to right side. Reinstall
coil and doors.
CAUTION:
It is mandatory to use an emergency auxiliary drain
pan
with any coil or air
handler installed in an attic or above
a finished ceiling.
ELECTRICAL WIRING:
Refer to the unit nameplate for specific electrical data.
CAUTION:
Disconnect power at main fuse or circuit breaker
distribution panel before wiring unit to prevent shock or
fire hazard.
POWER WIRING:
Unit is suitable for use with copper conductors. Tighten all
wire connectors. Take care not to damage heater ceramic
insulators on electric heat models. For correct
field wire
size see unit nameplate and field wiring table inside
electrical compartment door. Use 75°C minimum wire in
unit wiring compartment. Units larger than 10 KW will
require multiple sets of power conductors.
NOTE: See unit for complete wiring diagram located on
blower housing.
CONTROL WIRING:
Field connections to the low voltage leads are made using
appropriate field supplied wiring connectors. Consult
installatio
n instructions provided with accessory items for
specific information on control wiring. Use 18 AWG
minimum copper conductors for control wiring up to 50’
between units. 16 AWG control conductors are
recommended for lengths between 50’ and 100’. Class 2
wiring is acceptable.
Take care not to short control leads as,
transformer burnout could result. Some manufacturer’s
outdoor units are equipped with a 24 volt control
transformer. If this type of outdoor unit is used with this
air handler, use a thermostat with isolating contacts to
prevent inter-connection of two separate Class 2 circuits.
Set thermostat heat anticipator at 0.15 amps for units
12KW or smaller, set at .30 amps for 15 KW and larger.
VARIABLE SPEED MOTORS:
Electronic commutated and constant torque motor
s are
factory programmed and cannot be re-programmed in the
field. ECM motors have (4) jumper settings.
Refer to blower performance data located in the spec sheet
for the particular product to select the tap setting that best
fits the application
NOTE: All 208/230 volt motors are factory programmed
for “0” second fan “ON” delay for use with electric heat.
Motor must energize with electric heat. All 115 volt
motors are factory programmed for “30” second fan “ON”
delay for use with hydronic heat.