Carrier Infinity SYSTXCCUID01- B - Manual (Page 10)

10
Setup -- Fan Coil
HP/AC Airflow:
S COMFORT (default) Cooling airflow is varied depending on
humidity and temperature demand settings. This selection
enables the full dehumidify and comfort capabilities of the
system. When COMFORT is not selected, the unit will not run
reduced airflows for dehumidification. Heat Pump airflow is
varied depending on outdoor temperature to maximize comfort.
S EFFICIENCY -- fixed airflow used to achieve specified ratings --
no dehumidification airflow reduction. This is nominally 350
CFM/ton, but will vary if a 2--stage outdoor unit is used.
S MAXIMUM -- 400 CFM/ton. No dehumidification airflow
reduction.
Dehum Airflow:
S NORMAL (factory default) -- When equipment is running to
dehumidify, the airflow is allowed to adjust to a minimum to
satisfy the dehumidification call.
S HIGH -- Minimum airflow during the dehumidify mode is
increased to reduce duct and register sweating. Also increases
minimum airflow during normal cooling operation to reduce
duct sweating.
Heater Size:
S (choices dependent upon fan coil model)
This will show the heater size entered during the start--up process.
This value can be changed to another value (limited by the model
number of the fan coil). If the electric heater is self--identifying, this
value is not shown.
Elect Heat Lockout
S NONE (default)
S +5 to 55_F / --15 to 13_C
Outside temperature above which the electric heat will not operate
except for defrost.
G Terminal
This setup option selects desired operation when the R--G circuit
changes state on the fan coil control board depending on setup.
S DISABLED (Default)
S FAN -- turns on fan to selected fan speed when G terminal is
energized. See Fig. 26.
S FAN SPEED -- select Low, Med, High for all zones when G
terminal is energized
S SHUTDOWN -- shuts off fan and equipment when initiated.
This function is not intended for emergency fire shutdown. It
may be activated by a dry contact from an external device such
as a float switch or a relay. User selects whether the contact is
NC -- normally closed (default) or NO -- normally open. User
Interface displays SYSTEM MALFUNCTION on screen and
registers G terminal shutdown event in Last 10 System Events.
See Fig. 27.
Setup -- Heat Pump / AC
Cooling Lockout:
S NONE (default)
S 45_F / 7_C
S 50_F / 10_C
S 55_F / 13_C
Outside temperature below which cooling will not be provided.
Low Ambient Cooling:
S NO (default)
S YES
Selecting YES will enable the low ambient cooling operation in
the outdoor unit. This setting is only available with communicating
outdoor units and with Cooling Lockout set to NONE.
For detailed sequence of operation, see outdoor unit installation
instructions.
Entered Size:
S (dependent on indoor unit model)
Size of the outdoor unit entered during the start--up process. If the
outdoor unit is a communicating model, this value will not be
shown. This size can be changed here but is limited to sizes that the
indoor unit can handle.
Defrost Interval:
S 30 minutes
S 60 minutes
S 90 minutes
S 120 minutes (default)
S Auto--Defrost interval optimized by outdoor control (default for
communicating HP)
Time interval at which defrost cycles can occur on a heat pump.
High Cool Latch:
S NONE (default)
S On
S 80 to 110_F / 27 to 43_C
Outside temperature above which only the high stage (of a 2--stage
outdoor unit) will run when cooling.
High Heat Latch
S OFF (default)
S On
S 20 to 50_F / --7 to 10_C 2 --stage heat pump runs only high
stage heating below a selectable outdoor temperature. Selections
from 20 to 50_F / --7 to 10_C are available in 5_F / 3_C
increments.
CCUI
D
01
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B