Carrier XCT7 40VCC837FQEE Installationshandbuch Seite 10

Function introduction of the central controller
For XCT7, there are three kinds of controlling mode: Last in first out, Central & Lock can be selected
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for indoor units.
Last in first out: The indoor unit will execute the last order sent by the central controller, wired
controller or remote controller. For example, if a low fan speed order is sent first by the central
controller followed by a high-speed fan order by the wired controller, the indoor unit will execute
high fan speed. Central: Central controller enjoys all functions while the wired & remote controller
can only control the ON/ OFF of indoor units.
Lock: central controller enjoys all functions while wired & remote controller cannot control indoor
units.
Receiving outer signal input: On receiving the outer fire alarm signal, the central controller will turn
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off all the indoor units. Note: if there is no outer signal input, one should short circuit the ALARM1
and ALARM2.
Weekly timer setting. Weekly timer for one or some or all units can be set and run in a cycle or set
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as 'Except Date' and 'ONCE'. The "except date" can be set under "WEEK" of the schedule and the
"once date" can be set as "ONCE" on the schedule.
ECO sets maximum and minimum allowable temperature set points like Cool Only/ Heat Only and
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DST can be set based on the actual requirement.
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