Carrier 50TCQD14 Installation Instructions Manual page 38

Table 17 – Dry Bulb Operation No DCV (CO
Demand
Outside Air ---
Controlled
Good to
Ventilation
economize?
(DCV)
None No
None Yes
*
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on second stage of mechanical cooling Y2 –O after the delay if the call for Y1 ---I and Y2 ---I
have not been satisfied.
[ 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 fan to high and opening the OA damper 100% before the first stage mechanical cooling is enabled.
Table 18 – Dry Bulb Operation With DCV (CO
Demand
Outside Air ---
Controlled
Good to
Ventilation
economize?
(DCV)
No
Below set
Yes
No
Above set
Yes
*
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on second stage of mechanical cooling Y2 –O after the delay if the call for Y1 ---I and Y2 ---I
have not been satisfied.
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 fan to high and opening the OA damper 100% before the first stage mechanical cooling is enabled.
Y1­I Y2-I Fan Speed
Off Off Low
On Off Low
On On High
Off Off Low
On Off Low
On On High
Y1­I Y2-I Fan Speed
Off Off Low
On Off Low
On On High
Off Off Low
On Off Low
On On High
Off Off Low
On Off Low
On On High
Off Off Low
On Off Low
On On High
Sensor) - - 2 Speed Fan
2
Y1-O Y2-O
0-v/Off 0-v/Off MIN POS L
24-v/On 0-v/Off MIN POS L
24-v/On 24-v/On MIN POS H
0-v/Off 0-v/Off MIN POS L
0-v/Off 0-v/Off MIN POS L to Full-Open
DELAY [
0-v/Off * MIN POS H to Full-Open
24-v/On
Sensor) - - 2 Speed Fan
2
Y1-O Y2-O
0-v/Off 0-v/Off VENTMIN L
24-v/On 0-v/Off VENTMIN L
24-v/On 24-v/On VENTMIN H
0-v/Off 0-v/Off VENTMIN L
0-v/Off 0-v/Off VENTMIN L to Full-Open
24-v/On 0-v/Off* VENTMIN H to Full-Open
0-v/Off 0-v/Off VENTMIN L to VENTMAX
24-v/On 0-v/Off VENTMIN L to VENTMAX
24-v/On 24-v/On VENTMIN H to VENTMAX
0-v/Off 0-v/Off VENTMIN L to VENTMAX
0-v/Off 0-v/Off VENTMIN L to Full-Open
DELAY [
0-v/Off * VENTMIN H to Full-Open
24-v/On
38
Occupied Unoccupied
Closed
Closed
Closed
Closed
Closed to Full-Open
Closed to Full-Open
Occupied Unoccupied
Closed
Closed
Closed
Closed
Closed to Full-Open
Closed to Full-Open
Closed
Closed
Closed
Closed
Closed to Full-Open
Closed to Full-Open