3
17. 48/50HG028 208/230-v Units only:
Do not install control wiring harness included with the
accessory. The control wires for the power exhaust
contactors are included with the unit harness as a bundle
and can be connected to the appropriate terminals on the
contactors. See Fig. 11.
All other units:
Install control wiring harness as indicated in Fig. 12.
18. Dress the wiring in the control box so that the wires are
adequately supported and secured using the wire ties
supplied.
19. Replace the control box cover.
20. Re-apply power to the unit.
21. The ComfortLink™ control can now be configured to
operate the power exhaust. To do this the unit must be
configured for Power Exhaust Enabled (default is
DISABLED), Power Exhaust 1 Percentage setting
(default is 40%), Power Exhaust 2 Percentage setting
(default is 75%). These configurations are accomplished
through the Scrolling Marquee Display by using the
Configuration menu.
22. The control system must be configured to use the power
exhaust. A password may be required to edit the configu-
rations, depending on the previous settings configured in
the unit. Default password is “1111”.
23. To access the configuration, use the arrow keys to scroll
the red LED on the display to the “Configuration”
position and press . Use the arrow keys to scroll
down until the display reads “ECON”, and press the
key. At the Power Exhaust Enabled (PE.EN)
setting, press twice. The display should be
flashing DSBL. Use the arrow keys to change the
configuration to “ENBL” and press and then
. Use the arrow keys to scroll down to the
Power Exhaust 1 Percentage setting (PE1.P) and press
twice. Use the arrow keys to increase or
decrease the economizer position percentage that will
start the first power exhaust fan, and press and
.Usethearrowkeystoscrolldowntothe
Power Exhaust 2 setting (PE2.P) and press
twice. Use the arrow keys to increase or decrease the
economizer position percentage that will start the second
power exhaust fan, and press and .
24. Configuration of the power exhaust is now complete.
Pressing the key several times will return the
display to the auto scroll setting.
25. Consult the Controls and Troubleshooting Guide for
complete instructions on using the ComfortLink control
system.
26. The unit is now ready for normal operation.
ENTER
ENTER
ENTER
ENTER
ESCAPE
ENTER
ENTER
ESCAPE
ENTER
ENTER ESCAPE
ESCAPE
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