Initial Start-Up - Cacg/Cahg Units Only - ECR EMI America Series Installation, Operation And Maintenance Manual

Initial Start-Up — CACG/CAHG Units ONLY
NOTICE
CACH/CAHH units
• These units require setting of DIP
switches and controller functions
before proceeding with start-up.
• Follow instructions beginning on
page 28.
NOTICE
To test cooling operation
Operation of the unit depends on the
room temperature. It may be necessary
to warm the room before testing the
unit's cooling abilities.
NOTICE
When power is first applied to the con-
trol or after a power outage there is a
three minute delay before the compres-
sor or electric heat will energize. This is
to protect the unit from short cycling due
to loss of power.
WARNING
Electrical shock hazard
power to indoor and outdoor units is off
before proceeding.
Perform complete inspection
NOTICE
To perform a system electrical check:
• Turn off all power to the indoor and
outdoor units.
• Isolate the compressor (to prevent
it from operating until the check is
completed) by removing the con-
nection at the "Y" terminal on the
outdoor unit.
Comfort where it counts
CACG/CAHG & CACH/CAHH
• Installation, Operation and Maintenance Manual •
Figure 30
1.
2.
3.
4.
5.
— Turn off
Perform electrical circuit checks
1.
2.
3.
4.
24
Air Handlers
CAHG/CACG louver toggle
switch
toggle switch
Remove any tools or other obstructions.
Inspect all electrical connections.
Separate any lines that contact each
other.
Replace the control panel cover, filters
and grilles.
Test each power and circuit connection
before powering up the system.
Switch on the cassette unit and verify that
the fan cycles correctly.
Models CAHG24 and CACG36 only —
Check motorized van operation by turn-
ing on with the toggle switch located on
the side of the electrical box (Figure 30,
Page 24).
For units with electric heat, check opera-
tion of the heating elements by switching
the system to the heating mode. Adjust
the thermostat setpoint above room
temperature.
Ensure that the outdoor unit start-up
procedure has been completed as directed
in the unit's instruction manual.
P/N 240007756, Rev. A [051509]