Toshiba MMU-AP0072H2UL Engineering Data Book page 89

5
Outdoor unit
Model
Appearance
name
Size: 2.19 × 2.35 (in)
Application
* Install the optional
PCB in the inverter
assembly of the
outdoor header unit.
[1] External master ON/OFF control
Function
By connecting the cable (attached in this optional PCB) to the
interface PC board on an outdoor unit, all indoor units connected to
the outdoor unit enable to operate simultaneously.
Operation
The outdoor unit connection is for the header unit (U1).
Header outdoor unit
Connection cable
(attached in this
Outdoor unit
optional PCB)
interface PCB
CN512
SW1: Operation input switch
SW2: Stop input switch
Terminal Input Signal
ON
COOL (SW1)
OFF
ON
HEAT (SW2)
OFF
ontacts for each terminal.
Provide no-voltage pulse contacts for each terminal.
Hold the ON state for at least 100 msec.
Do not turn SW1 and SW2 ON simultaneously
[2] Night time operation (sound reduction) control
Function
As the cable (attached in this optional PCB) is connected to the "Interface
PCB" on an outdoor unit, both compressor speed and fan speed are
restricted while the signal of the night operation control is input. It
makes the noise reduction during the night time operation.
Operation
The outdoor unit connection is for the header unit (U1).
Header outdoor unit
Connection cable
(attached in this
Optional PCB
Outdoor unit
optional PCB)
interface PCB
CN508
SW1: Night time signal switch
Terminal Input Signal
ON
OFF
COOL (SW1)
ON
OFF
Each terminal should be connected to dry contact.
Sound reduction and approximation capacity (reference)
Outdoor unit During low-noise
mode* dB(A)
(base unit)
072 type 50
096 type 53
114/120 type 53
* Position of noise measuring device:
3.3 ft (1 m) from the front face of the set and 4.9 ft (1.5 m)
above ground (anechoic sound)
88
Function
Locally procured
Optional PCB
TB1
COM
COOL
P J 1 7
SW1
HEAT
SW2
Shield
wire
Operation
All indoor units operate together
All indoor units stop together
Locally procured
TB1
COM
COOL
P J 1 7
SW1
HEAT
Shield
wire
Operation
Night time operation control
Normal operation
Capacity
Cooling
approx. 85% approx. 80%
approx. 85% approx. 85%
approx. 80% approx. 80%
Relative to maximum capacity
Heating