Mitsubishi Heavy Industries SRR25ZJ-S, Техническое руководство, Страница: 68 / 174

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67
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'14 • SR-T-157
(iii) Remote operation
1) In case of multiple units (Max. 16 indoor units group) are connected to one wired remote control
When the indoor function setting of wired remote control for “External control set” is changed from “Individual
(Factory default)” to “ For all units”, all units connected in one wired remote control system can be controlled by
external operation input.
Ex. Indoor units =
⓪＋①＋②＋③＋……Ⓕ ≦16 units
XY
Wired remote control
Indoor unit
⓪
Signal &
Power
XY
123
123
XY
123
123
XY
123
123
XY
123
123
XY
123
123
Indoor unit
①
Outdoor unit
⓪
Outdoor unit
①
Outdoor unit
②
Outdoor unit
③
Outdoor unit
Indoor unit
②
Indoor unit
③
䇭
(master)
Indoor unit
Ⓕ
C
n
External
input
Ⓕ
Individual operation (Factory default) All units operation (Local setting)
CnT-6
ON OFF ON OFF
Only the unit
directly connected
to the remote
control can be
operated.
Only the unit
directly connected
to the remote
control can be
stopped opeartion.
All units in one
remote control
system can be
operated.
All units in one
remote control
system can be
stopped operation.
Unit ⓪ only Unit ⓪ only Units ⓪－Ⓕ Units ⓪－Ⓕ
When more than one indoor unit (Max. 16 indoor units) are connected in one wired remote control system:
(1) With the factory default, external input to CnT-6 is effective for only the unit
⓪ .
(2) When setting “For all unit” (Local setting), all units in one remote control system can be controlled by external
input to CnT-6 on the indoor unit ⓪ .
(3) External input to CnT-6 on the other indoor unit than the unit ⓪ is not effective.
(w) Fan control at heating startup
(i)
Start conditions
At the start of heating operation, if the difference of setting temperature and return air temperature is 5°C or higher after
the end of hot start control, this control is performed.
(ii)
Contents of control
1) Sampling is made at each minute and, when the indoor unit heat exchanger temperature (detected with Th
I
-R) is
37°C or higher, present number of revolutions of indoor unit fan speed is increased by 10min -1 .
2) If the indoor unit heat exchanger temperature drops below 37°C at next sampling, present number of revolutions of
indoor unit fan speed is reduced by 10min -1 .
(iii)
End conditions
Indoor fan speed is reduced to the setting airflow volume when the compressor OFF is established and at 30 minutes after
the start of heating operation.