Carrier 48TC series, Service And Maintenance Instructions, Page: 64 / 112

64
*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 Y–I and
Y2–I have not been satisfied.
*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 Y–I and
Y2–I have not been satisfied.
Table 27 — Damper Minimum Position Settings and Readings on Checkout Menu
DEMAND CONTROLLED
VENTILATION
(CO
2
SENSOR)
FAN SPEED SETPOINTS CHECKOUT
NO
1
MIN POS VMAX–HS
— —
2
MIN POS H VMAX–HS
MIN POS L VMAX–LS
YES
1
VENT MIN VMAX–HS
VENT MAX VMAX–HS
2
VENT MIN H VMAX–HS
VENT MAX H VMAX–LS
VENT MIN L —
VENT MAX L —
Table 28 — Dry Bulb Operation without DCV (CO
2
Sensor) — 1 Speed Fan
DEMAND
CONTROLLED
VENTILATION (DCV)
OUTSIDE AIR
GOOD TO
ECONOMIZE
Y1-I Y2-I FAN SPEED Y1-O Y2-O OCCUPIED UNOCCUPIED
NONE
No
Off Off High 0-v/Off 0-v/Off MIN POS Closed
On Off High 24-v/On 0-v/Off MIN POS Closed
On On High 24-v/On 24-v/On MIN POS Closed
Yes
Off Off High 0-v/Off 0-v/Off MIN POS Closed
On Off High 0-v/Off 0-v/Off
MIN POS to
Full-Open
Closed to
Full-Open
On On High 24-v/On 0-v/Off*
MIN POS to
Full-Open
Closed to
Full-Open
Table 29 — Dry Bulb Operation with DCV (CO
2
Sensor) — 1 Speed Fan
DEMAND
CONTROLLED
VENTILATION (DCV)
OUTSIDE AIR
GOOD TO
ECONOMIZE
Y1-I Y2-I FAN SPEED Y1-O Y2-O OCCUPIED UNOCCUPIED
Below CO
2
set
No
Off Off High 0-v/Off 0-v/Off
VENTMIN
Closed
On Off High 24-v/On 0-v/Off
VENTMIN
Closed
On On High 24-v/On 24-v/On
VENTMIN
Closed
Yes
Off Off High 0-v/Off 0-v/Off
VENTMIN
Closed
On Off High 0-v/Off 0-v/Off
VENTMIN to
Full-Open
Closed to
Full-Open
On On High 24-v/On 0-v/Off*
VENTMIN to
Full-Open
Closed to
Full-Open
Above CO
2
set
No
Off Off High 0-v/Off 0-v/Off
VENTMIN to
VENTMAX
Closed
On Off High 24-v/On 0-v/Off
VENTMIN to
VENTMAX
Closed
On On High 24-v/On 24-v/On
VENTMIN to
VENTMAX
Closed
Yes
Off Off High 0-v/Off 0-v/Off
VENTMIN to
VENTMAX
Closed
On Off High 0-v/Off 0-v/Off
VENTMIN to
Full-Open
Closed to
Full-Open
On On High 24-v/On 0-v/Off*
VENTMIN to
Full-Open
Closed to
Full-Open