Specifications

Air conditioning in cooling
Air conditioning off
In between (bypass ventilation)
Air conditioning in heating
Automatic
changeover
Automatic
changeover
Exhaust fan Damper
Heat exchanger
element (heat recovery)
Heat exchanger
element (heat recovery)
DX coil (cooling)
Air supply fan
DX coil (heating)
Humidifying
EA
OA
EA
OA
RA
SA
RA
SA
EA
OA
RA
SA
EA: exhaust air RA: return air (from room)
OA: outdoor air SA: supply air (to room)
9
REDUCING THE LOAD ON THE AIR CONDITIONING SYSTEM
Thanks to the use of heat reclaim ventilation the load on the air conditioning is reduced with approximately 31%.
- 23% by operating in total heat exchange mode (in comparison with normal ventilation fans)
- another 6 % by auto-ventilation mode changeover switching
- a further 2 % by pre-cool, pre-heat control (reduces air conditioning load by not running the HRV shortly after the air
conditioning is switched on.)
Note: the values mentioned above may vary according to weather and other environmental conditions at the location of the unit’s installation
Example: Outdoor temp. 30°C
Indoor temp. 22°C
Example: Outdoor temp. -5°C
Indoor temp. 22°C
40
30
20
ON
OFF
ON
OFF
Temp.
2 Hours
auto
start
start
VKM
Air
Conditioner
Indoor Temp.
Outdoor Temp.
Setting Temp.
FREE COOLING
The free cooling option reduces the air conditioning energy
consumption and uses energy in a more efficient way by actively
introducing fresh air into rooms. Free cooling maintains indoor
comfort through the introduction of low temperature outdoor air
into rooms.
Note: Free cooling is only available in combination with Intelligent Touch Controller
Nighttime free cooling operation
Nighttime free cooling operation is an energy saving function
operating at night when the air conditioning is switched off.
By ventilating rooms containing office equipment that increases
room temperature, night purge reduces the cooling load when
air conditioning is switched on in the morning, reducing the daily
running costs.
Nighttime free cooling operation is factory set to “off” but can be activated by your Daikin dealer
on request.
Nighttime free cooling operation only available on VKM units connected to a VRV system
Operation automatically switches to the optimum pattern to suit prevailing conditions
Temp.
°C
Temp.
°C
16
16
19
21
21
26
Morning
Morning
Day time
Day time
Night
Night
Set
temp.
Set
temp.
Outdoor
temp.
Outdoor
temp.
Free cooling possible Free cooling possible
100% free cooling possible
Example of free cooling during summer
Example of free cooling during intermediate season