Cabinet Heater G*Y/D*Y Series
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
22
4. CN4 – Condensate Overflow Switch
l
Low voltage condensate switch shuts down the unit when the water level in the drain pan reaches an
unsafe level.
a. Switch is normally closed and opens on an increase in water level.
l
When contact activated, then
a. Motor OFF
b. Valve Actuator OFF
c. Electric Heat OFF
d. Power to controller remains ON
l
OVF LED indication when condensate switch activated
5. CN5 – 2nd Stage Cooling/Heating
l
Available with two stage coil for part load
a. Available with IEC Venture Wi-Fi Thermostat (E055-71520330). Contact factory for application.
l
24V On/Off, 24V Floating, 0-10V Proportional control
l
CL2 or HT2 LED indication when either 2
nd
stage cooling or heating activated
6. CN6 – 1st Stage Cooling/Heating
l
24V On/Off, 24V Floating, 0-10V Proportional control, Line voltage
l
SureFlow control available. Contact factory for applications
l
CLG or HTG LED indication when either 1
st
stage cooling or heating activated
7. CN7 – Class II Transformer
l
40VA, 75VA option
l
24V LED activated when powered
8. CN8 – Incoming Power
9. CN9 – PSC Motor
l
3 speed application
l
Either LOW/MED/HI activated when a speed is selected
10. CN10 – EC Motor
l
3 speed application
l
Solid State switching
l
Either LOW/MED/HI activated when a speed is selected
l
ECM LED indicates speed control is powered
l
0-10V LED intensity indicates increasing speed
11. ECM Fan Speed Adjustment
If the unit is equipped with an ECM blower, additional steps may be required during the air balancing process. Review
project submittals or order acknowledgment to determine which ECM control scheme the unit has. Alternatively, match
the control board to the illustrations.
CAUTION! Both of the procedures described below require the control box to be powered while
adjustments are made. Line voltage components are concealed behind a secondary cover. However,
installer should still take all reasonable precautions.
SECTION THREE – Controls Operation, Cont'd.
