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HOOK
TAPPING
< 0.25 IN.
Fig. 11 -- Mounting Hooks to Wall
Step 4 -- Connect
Piping
CONDENSATE
PIPING-
The
unit
is supplied
with
a
5/s-in. OD drain connection
to connect copper or plastic drain
piping. When installing condensate
piping, follow these recom-
mendations:
•
Condensate
piping
should
slope downward
in the direc-
tion of condensate
flow, with
a minimum
gradient
of
1 in. per 100 inches.
•
When multiple units are connected
to a common
conden-
sate drain, ensure that the drain is large enough to accom-
modate the volume of condensate
from all units. It is also
recmmnended
to have an air vent in the condensate
pip-
ing to prevent
any air locks.
•
Condensate
piping must not be installed
where
it may be
exposed
to freezing temperatures.
REFRIGERANT PIPING
When connecting
from an indoor unit to an outdoor unit,
the isolation
valve at the outdoor unit should
be in the
closed position throughout
the refrigerant
piping process.
Failure to follow this procedure
may result in equipment
damage.
When connecting
from an indoor unit to an outdoor unit,
follow these procedures:
•
Check
for maximum
elevation
differential
and length of
refrigerant
piping between
the indoor and outdoor unit. If
the difference
is more than 33 ft, consider
mounting
the
outdoor unit above indoor unit.
•
Refrigerant
piping
connection
between
indoor
and out-
door
units
should
be performed
once
the
units
are
secured
at their respective
installation
locations.
•
The refrigeration
piping starts at the indoor unit and ends
at the outdoor
unit.
•
The number
of bends in the refrigeration
piping
must be
fewer than 15.
• The refrigerant piping should be dry and free of dust and
other impurities.
• The bending angle of the refrigerant pipe should not
exceed 90 degrees and the bending radius should be as
large as possible to prevent any breakage in piping.
• Use proper cutting and flaring tools to avoid leakage.
•
Before
insulating
the suction
and
liquid
refrigeration
pipes, perform
pressure
and leak tests. For details,
see
the outdoor unit installation
manual.
Insulating
both suc-
tion and liquid refrigerant
pipes is required.
•
Vacuuming
and charging
of the system
should be carried
out as described
in the outdoor unit installation
manual.
Step 5 -- Complete
Electrical
Connections
Installation
of wiring must conform
with local building codes
and with National
Electric Code ANSI/NFPA
70, current edi-
tions. Units must be electrically
grounded
in conformance
with
the code. In Canada,
wiring must comply
with CSA C22.1,
Electrical Code.
Electrical shock can cause personal
injury and death. Dis-
connect power supply before making wiring connections.
There may be more than one disconnect
switch. Tag all dis-
connect locations to alert others not to restore power until
work is completed.
All units must be wired strictly in accordance with the wir-
ing diagram furnished with the unit. Any wiring different
from the wiring diagram could result in personal injury and
property damage.
Any original factory wiring that requires replacement
must
be replaced
with wiring material having a temperature
rat-
ing of at least 105 C.
Ensure supply voltage to the unit, as indicated on the serial
plate, is not more than 10% over the rated voltage or 10%
under the rated voltage.
Failure
to follow
these recolrnnendations
may result
in
equipment
damage.
This equipment in its standard form is designed for an elec-
trical supply of 208/230-1-60. Any damage to or failure of
units caused by incorrect wiring or voltage is not covered by
warranty.
Electric wiring must be sized to carry the full load amp
draw of the motor, starter, and any other controls that are used
with the unit. See Table 4 for electrical data.
Table 4 -- 40WAU Electrical Data
UNIT
40WAU012
40WAU015
40WAU018
40WAU024
40WAU030
40WAU036
40WAU048
LEGEND
POWER SUPPLY
MCA
MOPD
0,3
15
0,9
15
0,9
15
0,9
15
1,1
15
1,4
15
1,4
15
MCA
-- Minimum Circuit Amps
MOPD -- Maximum Overcurrent
Protective Device
JS
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