Carrier 48FC 08-16 Series - Page 67

67
Table 22 — Economizer Operation - FAN TYPE = 2 SPEED
INPUTS OUTPUTS
DEMAND
CONTROLLED
VENTILATION
(DCV)
OUTSIDE AIR
GOOD TO
ECONOMIZE
W
(HEAT ON)
COOL
Y1-IN
COOL
Y2-IN
COOL
Y1-OUT
COOL
Y2-OUT
FAN SPEED
(reference
only)
DAMPER POSITION
OCCUPIED UNOCCUPIED
NONE
NO
ON N/A N/A OFF OFF HIGH MIN POS H Closed
OFF OFF OFF OFF OFF LOW MIN POS L Closed
OFF ON OFF ON OFF LOW MIN POS L Closed
OFF ON ON ON ON HIGH MIN POS H Closed
YES
ON N/A N/A OFF OFF HIGH MIN POS H Closed
OFF OFF OFF OFF OFF LOW MIN POS L Closed
OFF ON OFF OFF OFF LOW
MIN POS L to
Full Open
Closed to
Full Open
OFF ON ON ON OFF
a
NOTE(S):
a. With stage 3 delay (STG3 DLY) in Advanced setup, COOL Y2-OUT will be turned ON after the delay time specified.
HIGH
MIN POS H to
Full Open
Closed to
Full Open
Below CO
2
Set
NO
ON N/A N/A OFF OFF HIGH VENTMIN H Closed
OFF OFF OFF OFF OFF LOW VENTMIN L Closed
OFF ON OFF ON OFF LOW VENTMIN L Closed
OFF ON ON ON ON HIGH VENTMIN H Closed
YES
ON N/A N/A OFF OFF HIGH VENTMIN H Closed
OFF OFF OFF OFF OFF LOW VENTMIN L Closed
OFF ON OFF OFF OFF LOW
VENTMIN L to
Full Open
Closed to
Full Open
OFF ON ON ON OFF
a
HIGH
VENTMIN H to
Full Open
Closed to
Full Open
Above CO
2
Set
NO
ON N/A N/A OFF OFF HIGH
VENTMIN H to
VENTMAX H
Closed
OFF OFF OFF OFF OFF LOW
VENTMIN L to
VENTMAX L
Closed
OFF ON OFF ON OFF LOW
VENTMIN L to
VENTMAX L
Closed
OFF ONONONON HIGH
VENTMAX H to
VENTMAX H
Closed
YES
ON N/A N/A OFF OFF HIGH
VENTMIN H to
VENTMAX H
Closed
OFF OFF OFF OFF OFF LOW
VENTMIN L to
VENTMAX L
Closed
OFF ON OFF OFF OFF
a
LOW
VENTMIN L to
Full Open
Closed to
Full Open
OFF ON ON ON OFF
a
HIGH
VENTMIN H to
Full Open
Closed to
Full Open
LEGEND
N/A — Not applicable