Site Preparation; Installing The Outdoor Unit; Installing The Indoor Unit; Connecting Refrigerant Tubing Between The Indoor And Outdoor Unit - Nordyne R410-A User's Information And Installation Instructions Manual

the equipment. Read and thoroughly under-
stand the instructions provided with the equip-
ment prior to performing the installation and
operational checkout of the equipment.
Brazing Operations — Installation of equip-
ment may require brazing operations. Safety
codes must be complied with. Safety equip-
ment (e.g.; safety glasses, work gloves, fire
extinguisher, etc.) must be used when perform-
ing brazing operations.
! 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
! CAUTION:
This system utilizes R410-A refrigerant
with POE oil. When servicing, cover or
seal openings to minimize the exposure
of the refrigerant system to air to prevent
accumulation of moisture and other
contaminants.
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
3