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7-2-2-5. Night Operation Control
Operation
Reduce emitted noise during night by resting the compressor and
fan speed.
The control contents are accepted during leading and trailing of
the input signal.
(The status of leading and trailing should be held for 100mm. sec.
or more.)
Capacity criterion during night operation control
Capacity during control indicates values as described in the
following table.
(Against Max. capacity)
7-2-2-6. Operation Mode Selection Control
Operation
This control can be operated with the operation mode which is
permitted by SMC or SMH.
The indoor unit operating by operation mode without permission
is as follows:
1) Display on remote controller
“
(Mode select controlled)” goes on.
2) Indoor fan
In FAN mode: Fan normally operates.
In COOL mode: Fan normally operates.
In HEAT mode: Fan operates with ultra low speed.
* Be sure to prepare a contact for each contact terminal.
Outside signal: No voltage serial contact
SMC: COOL mode designated input switch
SMH: HEAT mode designated input switch
External master ON/OFF control board : TCB-PCMO 2E
Outdoor unit destination to be connected becomes the header
outdoor unit (U1).
CN508 (4P RED)
Header outdoor unit interface P.C. board
Connection cable
External master
ON/OFF
control board
PJ17
(4P WHI)
SMC
HEAT
COOL
COM
Procured locally
CN510 (4P WHI)
Header outdoor unit interface P.C. board
Connection cable
External master
ON/OFF
control board
PJ17
(4P WHI)
SMC
HEAT
COOL
COM
Procured locally
SMH
SMC : Input signal for night operation.
External master ON/OFF control board : TCB-PCMO 2E
Outdoor unit destination to be connected becomes the header outdoor unit (U1).
Terminal
COOL
(SMC)
Input signal
ON
OFF
ON
OFF
Operation
Night (sound reduction)
operation control
Usual operation
1201 type
1001 type
0801 type
Night operation sound
reduction dB (A)
50
50
50
Capacity
COOL HEAT
Approx. 55% Approx. 45%
Approx. 65% Approx. 55%
Approx. 80% Approx. 70%