Carrier WeatherMaster 50HC04 Service And Maintenance Instructions page 52

Table 22 — Dry Bulb 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.
Table 23 — Enthalpy Operation without DCV (CO
DEMAND OUTSIDE AIR
CONTROLLED GOOD TO
VENTILATION (DCV) ECONOMIZE
NO CO SENSOR
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 second
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.
Y1-I Y2-I
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
Y1-I Y2-I
OFF OFF
NO ON OFF
ON ON
OFF OFF
ON OFF
YES
ON ON
Sensor) — 2 Speed Fan
2
FAN
Y1-O Y2-O
SPEED
LOW 0v/Off 0v/Off
LOW 24v/On 0v/Off
HIGH 24v/On 24v/On
LOW 0v/Off 0v/Off
LOW 0v/Off 0v/Off
HIGH 24v/On 0v/Off
LOW 0v/Off 0v/Off
LOW 24v/On 0v/Off
HIGH 24v/On 24v/On
LOW 0v/Off 0v/Off
LOW 0v/Off 0v/Off
DELAY*
HIGH 0v/Off†
24v/On
Sensor) — 2 Speed Fan
2
FAN
Y1-O Y2-O
SPEED
LOW 0v/Off 0v/Off
LOW 24v/On 0v/Off
HIGH 24v/On 24v/On
LOW 0v/Off 0v/Off
LOW 0v/Off 0v/Off
DELAY*
HIGH 0v/Off†
24v/On
52
OCCUPIED UNOCCUPIED
VENTMIN
VENTMIN
VENTMIN
VENTMIN
VENTMIN to
Closed to Full-Open
Full-Open
VENTMIN to
Closed to Full-Open
Full-Open
VENTMIN to
VENTMAX
VENTMIN to
VENTMAX
VENTMIN to
VENTMAX
VENTMIN to
VENTMAX
VENTMIN to
Closed to Full-Open
Full-Open
VENTMIN to
Closed to Full-Open
Full-Open
OCCUPIED UNOCCUPIED
MIN POS
MIN POS
MIN POS
MIN POS
MIN POS to Full Open Closed to Full-Open
MIN POS to Full Open Closed to Full-Open
Closed
Closed
Closed
Closed
Closed
Closed
Closed
Closed
Closed
Closed
Closed
Closed