Carrier WeatherExpert 48LC Series Service And Maintenance Instructions page 44

Table 22 — Dry Bulb Operation With DCV (CO
DEMAND
CONTROLLED
VENTILATION (DCV)
Below CO set
2
Above CO set
2
*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.
Table 23 — Enthalpy Operation Without DCV (CO
DEMAND
CONTROLLED
VENTILATION (DCV)
NONE
*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.
Table 24 — Enthalpy Operation With DCV (CO
DEMAND OUTSIDE AIR
CONTROLLED GOOD TO
VENTILATION (DCV) ECONOMIZE
Below CO set
2
Above CO set
2
*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 sec-
ond stage cooling by turning on the fan to high and opening the OA damper 100% before the first stage mechanical cooling is enabled.
†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.
OUTSIDE AIR
GOOD TO Y1-I Y2-I
ECONOMIZE
Off Off
No On Off
On On
Off Off
On Off
Yes
On On
Off Off
No On Off
On On
Off Off
Yes On Off
On On
OUTSIDE AIR
GOOD TO Y1-I Y2-I
ECONOMIZE
Off Off
No On Off
On On
Off Off
On Off
Yes
On On
Y1-I Y2-I
Off Off
On Off
No
On On
Off Off
On Off
Yes
On On
Off Off
On Off
No
On On
Off Off
On Off
Yes
On On
Sensor) — 1 Speed Fan
2
FAN SPEED Y1-O
High 0-v/Off
High 24-v/On
High 24-v/On
High 0-v/Off
High 0-v/Off
High 24-v/On
High 0-v/Off
High 24-v/On
High 24-v/On
High 0-v/Off
High 0-v/Off
High 24-v/On
Sensor) — 1 Speed Fan
2
FAN SPEED Y1-O
High 0-v/Off
High 24-v/On
High 24-v/On
High 0-v/Off
High 0-v/Off
High 24-v/On
Sensor) — 1 Speed Fan
2
FAN
Y1-O Y2-O
SPEED
High 0-v/Off 0-v/Off
High 24-v/On 0-v/Off
High 24-v/On 24-v/On
High 0-v/Off 0-v/Off
High 0-v/Off 0-v/Off
High 24-v/On 0-v/Off†
High 0-v/Off 0-v/Off
High 24-v/On 0-v/Off
High 24-v/On 24-v/On
High 0-v/Off 0-v/Off
High 0-v/Off 0-v/Off
DELAY*
High 0-v/Off†
24-v/On
44
Y2-O OCCUPIED
0-v/Off
VENTMIN
0-v/Off
VENTMIN
24-v/On
VENTMIN
0-v/Off
VENTMIN
VENTMIN to
0-v/Off
Full-Open
VENTMIN to
0-v/Off*
Full-Open
VENTMIN to
0-v/Off
VENTMAX
VENTMIN to
0-v/Off
VENTMAX
VENTMIN to
24-v/On
VENTMAX
VENTMIN to
0-v/Off
VENTMAX
VENTMIN to
0-v/Off
Full-Open
VENTMIN to
0-v/Off*
Full-Open
Y2-O OCCUPIED
0-v/Off MIN POS
0-v/Off MIN POS
24-v/On MIN POS
0-v/Off MIN POS
MIN POS to
0-v/Off
Full-Open
MIN POS to
0-v/Off*
Full-Open
OCCUPIED UNOCCUPIED
VENTMIN
VENTMIN
VENTMIN
VENTMIN
VENTMIN to
Full-Open
VENTMIN to
Full-Open
VENTMIN to
VENTMAX
VENTMIN L to
VENTMAX
VENTMIN H to
VENTMAX
VENTMIN L to
VENTMAX
VENTMIN to
Full-Open
VENTMIN to
Full-Open
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
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
Closed
Closed
Closed
Closed
Closed to
Full-Open
Closed to
Full-Open