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Unconditioned Spaces m All duct work
passing throughunconditioned s pacemustbe
properly
insulated to minimize duct losses and
prevent condensation.
Use insulation with an
outer vapor barrier. Refer to local codes for
insulation material requirements.
Acoustical
Duct Work m Certain installations
may require the use of acoustical
lining inside
the supply duct work. Acoustical insulation must
be in accordance
with the current revision of the
Sheet Metal and Air Conditioning
Contractors
National
Association
(SMACNA)
application
standard for duct liners. Duct lining must be UL
classified
batts or blankets with a fire hazard
classification
of FHC-25/50
or less. Fiber duct
work may be used in place of internal duct liners
if the fiber duct work is in accordance
with the
current revision of the SMACNA
construction
standard on fibrous glass ducts. Fibrous duct
work and internal acoustical lining must be NFPA
Class 1 air ducts when tested per UL Standard
181 for Class 1 ducts.
Horizontal
to Down flow Conversion
=The
unit
is shipped ready for horizontal duct connections.
If down flow ducts are required, the unit must be
converted following the steps below for both the
supply and return ducts.
1 ) Locate the duct cap inside the duct openings
and remove the screw holding it in place.
2) Lift the cap out of the unit. (The cap can be
pushed
up from the bottom
by reaching
through the fork slot).
3) Cover the horizontal duct opening with the
cap. The insulation
will be on the indoor
side.
4)
Fasten the cover with screws and seal to
prevent air leakage.
Clearance
= This unit is approved
for 6 inch
clearance.
ELECTRICAL
WIRING
General
=
Electrical
power wiring
must be
made in accordance
with all applicable
local
codes and ordinances,
and with the current
revision of the National Electric Code NFPA 70
or in Canada CSA
C.22.1 =Canadian Electrical
Code Part 1. If any ofthe original wire as supplied
with the unit must
be replaced,
it must be
replaced with material of the same gauge and
temperature
rating.
WARNING:
To
avoid
risk
of electrical
shock,
personal
injury, or death,
disconnect
all electrical
power
to the unit before
performing
any maintenance
or service.
The unit may have more than one elec-
trical
supply.
Line Voltage
=
Before
proceeding
with the
electrical
connections,
make certain that the
voltage,
frequency,
and phase
of the supply
source are the same as those specified on the unit
rating plate. Also verify that the service provided
by the utility is sufficient to handle the additional
load imposed by this equipment.
See the unit wiring label for proper high and low
voltage wiring. Make all electrical
connections
in accordance
with all applicable
codes and
ordinances.
Use a separate branch electrical circuit for this
unit. A means of electrical disconnect
must be
located within sight of and readily accessibility
to the unit. Internally
mounted circuit breakers
are available
as field installed options. These
circuit breakers can be used as an electrical
disconnect.
The unit is shipped from the factory wired for 240
volt transformer operation. For 208 volt operation,
remove the lead from the transformer
terminal
marked 240V and connect
it to the terminal
marked 208V. For maximum ampacity and over
current protection, see the unit rating plate.
1
2
3
4
5
6
RED
BLUE
BLACK
WHITE
PiN NUMBER
1
2
3
4
5
6
WIRE COLOR
MOTOR SPEED
RED
LOW
BLUE
BLACK
N/A
WHITE
MEDIUM
HIGH
N/A
COMMON
Figure 7. Motor Lead Connector
=Standard
Motor
10
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