21
Table 13 – Enthalpy Operation No DCV (CO
2
Sensor) -- 2 Speed Fan
c
Demand
Control Ventilation
(DCV)
Outside Air ---
Good to
economize?
Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied
NO CO
2
SENSOR
No
Off Off Low 0-v/Off 0-v/Off MIN POS L Closed
On Off Low 24-v/On 0-v/Off MIN POS L Closed
On On High 24-v/On 24-v/On MIN POS H Closed
Ye s
Off Off Low 0-v/Off 0-v/Off MIN POS L Closed
On Off Low 0-v/Off 0-v/Off MIN POS L to Full- Open Closed to Full-Open
On On High
DELAY
b
24-v/On
0-v/Off
a
MIN POS H to Full- Open Closed to Full-Open
a
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechan ical cooling Y2 –O after the delay if the call for Y1---I and Y2---I have
not been satisfied.
b
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed fan to try to satisfy the call for second
stage cooling by turning on the fa n to high and opening the OA damper 100% before th e first stage mecha nical cooling is en abled.
c
Does not apply to KC/KCQ 04---06 or HC/HCQ/TC/TCQ 04---07 units
Table 14 – Enthalpy Operation With DCV (CO
2
Sensor) -- 2 Speed Fan
c
Demand
Control Ventilation
(DCV)
Outside Air ---
Good to
economize?
Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied
Below set
No
Off Off Low 0-v/Off 0-v/Off VENTMIN L Closed
On Off Low 24-v/On 0-v/Off VE NTMIN L Closed
On On High 24-v/On 24-v/On VENTMIN H Closed
Ye s
Off Off Low 0-v/Off 0-v/Off VENTMIN L Closed
On Off Low 0-v/Off 0-v/Off VENTMIN L to Full- Open Closed to Full-Open
On On High 24-v/On 0-v/Off
a
VENTMIN H to Full- Open Closed to Full-Open
Above set
No
Off Off Low 0-v/Off 0-v/Off
VENTMIN L to
VENTMAX
Closed
On Off Low 24-v/On 0-v/Off VE NTMIN L to VENTMAX Closed
On On High 24-v/On 24-v/On VENTMIN H to VENTMAX Closed
Ye s
Off Off Low 0-v/Off 0-v/Off VENTMIN L to VE NTMAX Closed
On Off Low 0-v/Off 0-v/Off VENTMIN L to Full- Open Closed to Full-Open
On On High
DELAY
b
24-v/On
0-v/Off
a
VENTMIN H to Full- Open Closed to Full-Open
a
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechan ical cooling Y2 –O after the delay if the call for Y1---I and Y2---I have
not been satisfied.
b
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed fan to try to satisfy the call for second
stage cooling by turning on the fa n to high and opening the OA damper 100% before th e first stage mecha nical cooling is en abled.
c
Does not apply to KC/KCQ 04---06 or HC/HCQ/TC/TCQ 04---07 units
SUP--TI24--02SI
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