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4.0 INSTALLATION
4.11 Grounding
Wiring
Start Up
WARNING:
The unit must be
permanently grounded. Failure to do so can cause
electrical shock resulting in severe personal injury or
death.
A grounding lug is provided near the line-voltage pow
-
er entrance for a ground wire.
5.0 SYSTEM START-UP AND REFRIGERANT CHARGING
5.1 System Start-Up
Overview
Once the system hardware and wiring has been
properly installed, the next step is to start the system
up, verify indoor air-flow, and adjust the refrigerant
charge. To assure optimum comfort, efficiency, and
reliability, it is extremely important to follow the proce
-
dures in this section to assure the indoor air-flow and
refrigerant charge are correct.
5.2 Initial Power-Up
and EcoNet
™
Communication
Verification
After all installation steps have been completed, apply
electrical power to the indoor and outdoor units. The
EcoNet
TM
Control Center should be switched to the
off position initially. Within 45 seconds of power being
applied, the EcoNet
TM
Control Center should detect the
indoor and outdoor units. A “0” for Standby Mode will
be displayed on the Variable Speed Outdoor Control
(VSODC).
5.3 EcoNet
™
Control
Center Set-Up
Follow the set-up instructions included with the
EcoNet
TM
Control Center prior to starting system.
Cooling dehumidification must be disabled for indoor
air-flow verification and refrigerant charging. The
indoor air-flow trim adjustment should be set to 0% for
indoor air-flow verification, but should be adjusted prior
to refrigerant charging should the application require
an adjustment to the indoor air-flow.
IMPORTANT:
It is recommended to
wait at least 12 hours after electrical power is applied
to the outdoor unit before starting the compressor to
assure any liquid refrigerant inside the compressor
has been driven out by the compressor stator heat.
ST-A1241-01-X0
Ground Lug
