Toshiba R410A Service Manual page 85

7-2-2-5. Night Operation Control
Header outdoor unit interface P.C. board
External master
ON/OFF
control board
HEAT COOL
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).
7-2-2-6. Operation Mode Selection Control
Header outdoor unit interface P.C. board
External master
ON/OFF
control board
HEAT COOL
SMH
Operation
Reduce emitted noise during night by resting the compressor and
fan speed.
CN508 (4P RED)
Connection cable
PJ17
(4P WHI)
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
COM
Capacity during control indicates values as described in the
following table.
SMC
Procured locally
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
CN510 (4P WHI)
is as follows:
Connection cable
1) Display on remote controller
PJ17
(4P WHI)
2) Indoor fan
COM
SMC: COOL mode designated input switch
SMH: HEAT mode designated input switch
SMC External master ON/OFF control board : TCB-PCMO 2E
Outdoor unit destination to be connected becomes the header
outdoor unit (U1).
Procured locally
Terminal Input signal
ON
OFF
COOL
(SMC)
ON
OFF
Night operation sound
reduction dB (A)
1201 type 50
1001 type 50
0801 type 50
" (Mode select controlled)" goes on.
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
85
Operation
Night (sound reduction)
operation control
Usual operation
Capacity
COOL HEAT
Approx. 55% Approx. 45%
Approx. 65% Approx. 55%
Approx. 80% Approx. 70%
(Against Max. capacity)