Cabinet Heater G*Y/D*Y Series
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
25
Item
Description
Outcome
A
Condensate
Overflow Switch
(OVF)
Condensate switch is tripped by increasing water level in the drain pan
•
OVF LED Shows Red
•
Motor OFF
•
Actuator OFF
•
Electric Heat Off
•
Power to controller remains ON
B
Remote
Shutdown Input
(BAS)
24VAC externally applied to BAS CN3 or the internally-powered BAS CN3 loop is closed
•
BAS LED shows RED
•
Motor OFF
•
Actuator OFF
•
Electric Heat Off
•
Power to controller remains ON
C
Cooling 2
nd
Stage
(24VAC and
0-10VDC)
(CL2)
24VAC signal applied to CL2 of CN1.
2
nd
stage cooling relay (CL2) will actuate and supply 24VAC to Pin 9 of connector CN5.
When 0-10VDC is applied to CL2, control signal will passively be present at Pin 7 of the CN5
connector.
•
CL2 LED shows GREEN
•
Signal for 2
nd
stage cooling valve present
D
Heating 2
nd
Stage
(24VAC and
0-10VDC)
(HT2)
24VAC signal applied to HT2 of CN1.
2
nd
stage heating relay (HT2) will actuate and supply 24VAC to Pin 9 of connector CN5.
When 0-10VDC is applied to HT2, control signal will passively be present at Pin 7 of the CN5
connector.
•
HT2 LED shows GREEN
•
Signal for 2
nd
stage heating valve present
E
Cooling 1
st
Stage
(24VAC and
0-10VDC)
(CLG)
24VAC signal applied to CLG of CN1.
1
st
stage cooling relay (CLG) will actuate and supply 24VAC to Pin 9 of connector CN5.
When 0-10VDC is applied to CLG, that control signal will passively be present at Pin 7 of the
CN6 connector.
•
CLG LED shows GREEN
•
Signal for 1
st
stage cooling valve present
F
Heating 1
st
Stage
(24VAC and
0-10VDC)
(HTG)
24VAC signal applied to HTG of CN1.
1
st
stage HTG relay will actuate and supply 24VAC to Pin 12 of connector CN5.
When 0-10VDC is applied to HTG, that control signal will passively be present at Pin 8 of the
CN6 connector.
•
HTG LED shows GREEN
•
Signal for 1
st
stage cooling valve present
G
Fan Low Speed
(24VAC)
(LOW)
24VAC signal applied to LOW of CN1.
The low speed PSC motor power relay and the low speed ECM signal relays will be activated.
Line voltage will be present at Pin 2 of CN9 and the adjustable low speed ECM DC signal will
be present at Pin 5 of the CN10 connector.
•
LOW LED shows GREEN
•
Signal for low speed present
H
Fan Med Speed
(24VAC)
(MED)
24VAC signal applied to MED of CN1.
The medium speed PSC motor power relay and the medium speed ECM signal relays will be
activated.
Line voltage will be present at Pin 3 of CN9 and the adjustable medium speed ECM DC signal
will be present at Pin 5 of the CN10 connector.
•
MED LED shows GREEN
•
Signal for medium speed present
I
Fan High Speed
(24VAC)
(HI)
24VAC signal applied to HI of CN1.
High speed PSC motor power relay and the high speed ECM signal relays will be activated.
Line voltage will be present at Pin 4 of CN9 and the adjustable high speed ECM DC signal will
be present at Pin 5 of the CN10 connector..
•
HI LED shows GREEN
•
Signal for high speed present
J
24VAC Board
Power (24V)
24VAC signal supplied from internal transformer.
24VAC required for board operation.
•
24V LED shows ORANGE
K
0-10V ECM Speed
Control
(0-10V)
0-10V signal supplied to 10V of CN1.
Signal passively present at Pin or CN10 connector..
•
0-10 LED shows YELLOW
•
Intensity of the LED illumination will
vary depending on the amplitude of the
0-10VDC signal (10VDC is brightest)
L
Power Supply by
ECM (ECM)
ECM Motor connected to CN10 and powered by line voltage.
Signal from the ECM regulator is present at Pin 6 of the CN10 connector.
•
ECM LED shows YELLOW
13. LED Functions and Outcomes (Sequence of Operations)
K
L
J
I
A
B
C D E F G H
SECTION THREE – Controls Operation, Cont'd.
