Additional Function - Daikin Super Multi NX C-Series Service Manual

SiE12-411

3.16 Additional Function

3.16.1 Connection Pipe Condensation Preventing Function
This control is intended to adjust the electronic expansion valve opening so that the outdoor unit
gas pipe temperature (GDN) be kept below 8°C.
3.16.2 Priority Room Setting
Electronic expansion valves are controlled to provide the unit designated as the priority room
with the capacity of other room units.
(Distribution of capacity: Priority room unit --- ∆D Max., other room units --- ∆D -α)
" Setting method
" Control start conditions
Note: The operation mode of the priority room unit has precedence.
" Cancellation of control
3.16.3 Powerful Operation Mode
Compressor operating frequency is increased to P1 Max. (Max. Hz of operating room unit ΣS)
and outdoor unit airflow rate is increased.
3.16.4 Voltage Detection Function
Power supply voltage is detected each time equipment operation starts.
Function and Control
Turn off the circuit breaker before changing the setting.
Only one room can be set as the priority room.
Priority room setting is made.
AND
"Powerful" signal from the priority room unit is received.
The control function is canceled when the "Powerful" operation mode is switched off or 20
minutes elapse after "Powerful Operation" started.
A
room
Living
room
C
room
The prioritised room will be heated/cooled much more quickly
B
room Living
room
Normal
operation
Control Specification
A
room
B
room
C
When Inverter
room
powerful-operation
is selected in the
priority room
(R1396)
105