Daikin VRV III Manual page 40

ED34-862
6.8.2.2 Operable Outdoor Temperature Down to –15°C
If the outdoor air temperature falls below –10° C, the unit changes to intermittent operation to prevent freezing of the
heat exchanger element and dew condensation within the unit.
Intermittent operation
A thermistor (standard equipment) within the unit detects the outdoor air temperature. Unit operation varies according
to the detected temperature.
6.8.2.3 Indoor Unit Connectable to up to 130% of the Capacity
6.8.2.4 Slim Design
The slim design of only 387 mm in height enables installation inside
ceilings with less than 400 mm of clearance.
6.8.3 Energy Saving
6.8.3.1 Automatic Heat purge Function at Night
Not operation
Automatic heat
purge control
The heat which accumulated
indoors is discharged at night.
Air Conditioning load of the next
day is reduced, and efficiency is
increased.
Mechanism
<Operation>
1. Interlocking operation is carried out with the air-
conditioning machine, and the time of 2 hours
passing after an operation stop is judged to be
night.
(The same judgment as the present preparatory
operation)
2. After 2-hour progress, when indoor temperature
is higher than the preset temperature of an air-
conditioning machine and higher than outdoor
temperature, operation is started.
3. Operation will be stopped if indoor temperature
falls to air-conditioning machine preset
temperature.
Effect (Field Setting by remote controller)
It is reduction of about 5% of air-conditioning load at the time of cooling operation.
Air conditioning operation carries out to April to October, and air-conditioning load is calculated only with sensible
heat load.
General Information
Night
Stop
Heat Release Heat Release Heat Release
Heat Heat Heat
Reserve Reserve Reserve
Generation of heat with a PC etc. and
its heat are reserved to a wall ,ceiling.
Cold Air
Heat Release Heat Release Heat Release
Heat Heat Heat
Reserve Reserve Reserve
Heat is discharged
In case of interlocking operation with an air conditioner
Air
Conditioner
Morning
The load of air conditioner is large and
temperature does not fall easily.
There is little load and it is to comfortable
temp.immediately
Temp.
40
Outdoor Temp.
30
Setting Temp.
Indoor Temp.
20
Auto
ON 2Hours
HRV
OFF
ON
OFF
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Features
1
Start
Start
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