Site Preparation; Installing The Outdoor Unit - Nordyne MS3BC042KA Installation Instructions Manual

Outdoor air conditioner 12 seer extra high efficiency split system
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WARNING:
Ensure all electrical power to the unit is
off prior to installing
or servicing
the
equipment.
Failure to do so may cause
personal injury or death.
3. SITE PREPARATION
Unpacking
Equipment
-- Remove the card-
board carton and User's Manual from the equip-
ment.
Take care not to damage
the tubing
connections
when removing the carton.
Inspect for Damage--
Inspect the equipment
for damage prior to installing the equipment at
the job site. Ensure coil fins are straight and, if
necessary,
comb fins to remove flattened and
bent fins.
Preferred Location of the Outdoor
Unit at the
Job Site -- Conduct a survey of the job site to
determine
the optimum
location for mounting
the outdoor unit. Overhead obstructions, poorly
ventilated areas, and areas subject to accumu-
lation of debris should be avoided. The outdoor
unit must be installed in such a manner that
airflow through the coil is not obstructed
and
that the unit can be serviced.
Facility Prerequisites--
Electrical power must
be supplied to the equipment.
Electrical power
supplied must be adequate for proper operation
of the equipment.
The system must be wired
and provided with circuit protection
in accor-
dance with local building codes and the Na-
tional Electrical Code.
Minimum
Circuit Ampacity--
Electrical
wir-
ing to the equipment
must be compatible
and
in compliance with the minimum circuit ampacity
listed on the outdoor unit data label.
Maximum Fuse/Circuit Breaker Size--
Circuit
protection for the outdoor unit must be compat-
ible with the maximum fuse/circuit breaker size
listed on the outdoor unit data label.
4. INSTALLING THE OUTDOOR UNIT
Slab Mount -- The site selected
for a slab
mount installation
requires a stable foundation
and one not subject to erosion. The slab should
be level and anchored
(if necessary)
prior to
placing the equipment on the slab.
Cantilever
Mount --
The cantilever
mount
should be designed with adequate safety factor
to support the weight of the equipment,
and for
loads subjected to the mount during operation.
Installed equipment
should be adequately
se-
cured to the cantilever mount and levelled prior
to operation of the equipment.
Roof Mount --The
method of mounting should
be designed
so as not to overload
roof struc-
tures nor transmit noise to the interior of the
structure. Refrigerant and electrical line should
be routed through suitably waterproofed
open-
ings to prevent water leaking into the structure.
5. INSTALLING
THE INDOOR UNIT
The indoor section should be installed before
proceeding
with routing of refrigerant
piping.
Consult
the installation
instructions
of the in-
door unit (i.e.: air handler,
furnace,
etc.) for
details regarding installation.
6. CONNECTING
REFRIGERANT
TUBING
BETWEEN
THE
INDOOR
AND OUTDOOR
UNIT
General -- Once outdoor and indoor unit place-
ment has been determined,
route refrigerant
tubing between the equipment
in accordance
with sound installation
practices.
Refrigerant
tubing should be routed in a manner that mini-
mizes the length of tubing and the number of
bends in the tubing. Refrigerant
tubing should
be supported in a manner that the tubing will not
vibrate or abrade during system operation. Tub-
ing should be kept clean of foreign debris during
installation
and installation
of a liquid line filter
drier is recommended
if cleanlinessor
adequacy
of system evacuation
is unknown or compro-
mised.
Every effort should
be made by the
installer to ensure that the field installed refrig-
erant containing
components
of the system
have been installed in accordance
with these
instructions
and sound installation practices so
as to insure reliable system operation and lon-
gevity. The maximum recommended
intercon-
necting refrigerant line length is 75 feet, and the
vertical elevation difference between the indoor
and outdoor
sections
should
not exceed 20
feet.
Filter Dryer Installation
--
A filter dryer is
provided with PS series models only and must
be installed inthe liquid line of the system. If the

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