30 ● gForce Ultra User Manual 10-2014
3.11 Remote Temperature and Humidity Sensors (Optional)
Remote temperature and humidity sensors are optional. Although existing unit
mounted sensors can be removed for remote mounting, the remote sensor option
provides a more convenient means of field installation. This is because the sensors are
already connected to a predetermined length of cable and come mounted in a remote
sensor enclosure. The temperature and humidity sensors require a total of five wires
and should be twisted, shielded cable type.
3.12 Manual Override Switches
For testing and during start-up each gForce Ultra unit is provided with manual override
slide switches. There are seven (7) slide switches. One for each of the following
functions:
Water Valve
Fan Speed
Humidifier
Heat 1
Cool 2
Cool 1
Blower
All automatic control is disabled but the safety switches remain functional. Simply slide
the manual switches to energize the fan, compressor(s), humidification, reheat and
other functions (as applicable).
The fan speed of the Electronically Commutated (EC) plug fan motor can be adjusted
from 0 to 10 volts DC by adjusting the potentiometer at the left of the Fan Speed
switch. The fan speed will increase 10% of the fan base speed for each one (1) volt
adjustment (e.g., one (1) volt equals 10% speed). At ten (10) volts the motor is at full
speed.
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