Making Electrical Connections; Startup And Checkout - Nordyne R410-A User's Information And Installation Instructions Manual

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 cleanliness or 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.
Consult long line application guide for installa-
tions in excess of these limits.
Filter Dryer Installation—A filter dryer is pro-
vided with the unit and must be installed in the
liquid line of the system.
replaces a system with a filter dryer already
present in the liquid line, the filter dryer must be
replaced with the one supplied. The filter dryer
must be installed in strict accordance with the
manufacturer's installation instructions.
Optional Equipment — Optional equipment
(e.g.: filter/driers, liquid line solenoid valves,
etc.) should be installed in strict accordance
with the manufacturer's installation instructions.
7. MAKING ELECTRICAL
CONNECTIONS
! WARNING:
Turn off all electrical power at the
main circuit box before wiring
electrical power to the outdoor unit.
Failure to comply may cause severe
personnel injury or death.
Wiring Diagram/Schematic — A wiring dia-
gram/schematic is located on the inside cover of
the electrical box of the outdoor unit.
installer should become familiar with the wiring
diagram/schematic before making any electri-
cal connections to the outdoor unit.
Outdoor Unit Connections — The outdoor unit
requires both power and control circuit electrical
connections. Refer to the unit wiring diagram/
schematic for identification and location of out-
door unit field wiring interfaces.
4
Control Circuit Wiring — The outdoor unit is
designed to operate from a 24 VAC Class ll
control circuit. Control circuit wiring must com-
ply with the current provisions of the "National
Electrical Code" (ANSI C1.) and with applicable
local codes having jurisdiction.
Thermostat Connections — Thermostat con-
nections should be made in accordance with the
instructions supplied with the thermostat, and
with the instructions supplied with the indoor
equipment.
Electrical Power Wiring — Electrical power
wiring shall comply with the current provi-
sions of the "National Electrical Code" (ANSI
C1.) and with applicable local codes having
jurisdiction. Use of rain tight conduit is rec-
ommended. Electrical conductors shall have
minimum circuit ampacity in compliance with
the outdoor unit rating label. The facility shall
If the installation
employ electrical circuit protection at a cur-
rent rating no greater than that indicated on
the outdoor unit rating label.
Disconnect Switch — An electrically compat-
ible disconnect switch must be within line of
sight of the outdoor unit. This switch shall be
capable of electrically de-energizing the out-
door unit.
Optional Equipment — Optional equipment
requiring connection to the power or control
circuits must be wired in strict accordance with
current provisions of the "National Electrical Code"
(ANSI C1.), with applicable local codes having
jurisdiction, and the installation instructions pro-
vided with the equipment. Optional Equipment
(e.g.: liquid line solenoid valves, hard start kits,
low suction pressure cutout switch kit, high pres-
sure cutout switch kit, refrigerant compressor
crankcase heater, etc.) should be installed in
strict accordance with the manufacturer's instal-
lation instructions.

8. STARTUP AND CHECKOUT

The
Ensure electrical power to the unit is off
prior to performing the following steps.
Failure to do so may cause personal
injury or death.
Air Filters — Ensure air filters are clean and in
place prior to operating the equipment.
! WARNING: