Energy Saving - Daikin VAM-FA8VE Technical Data Manual

5 Features
1
5-2

Energy Saving

5
By heat recovery operation
Approx. 20% reduction
of heating / cooling load
By setting to automatic
ventilation mode
Approx. 6% reduction
of heating / cooling load
By Precooling / heating operation
Approx. 2% reduction
of heating / cooling load
28% reduction
of heating / cooling
Note:
1. The total heating / cooling load may vary depending on the climate or the other environmental conditions.
8
• HRV • VAM-FA8VE
HRV unit recovers the thermal energy during cooling / heating operation of air
conditioner. HRV reduces the cooling / heating load drastically and enhances the
heating / cooling efficiency.
Proper use of Heat recovery ventilation and normal ventilation saves energy.
When the cooling operation is required in winter, use of heat recovery ventilation is
not efficient because the outdoor air temperature is normally lower than that of
the indoor.
Thus, the proper use of ventilation mode enhances the heating / cooling efficiency.
Automatic Ventilation mode changeover
Refer to the CONTROL for the mode changeover.
Heat Recovery mode
Outdoor Air
Normal (Bypass) mode
Outdoor Air
The load is reduced at startup of the air conditioner by the following control.
Before the working hour, the room air is clean.
Therefore, the startup of HRV can be delayed.
Air conditioner
Total
load
• HRV • Heat Reclaim Ventilation
Exhaust Air
Outdoor Air
Heat Exchanger Element
Operation Sensor of ventilation
Difference between
indoor / outdoor temp.
Indoor temp. > Outdoor temp
Cooling
Indoor temp. < Outdoor temp.
Indoor temp. > Outdoor temp.
Heating
Indoor temp. < Outdoor temp.
Exhaust Air
Heat Exchanger Element
(Heat Recovery)
Exhaust Air
Heat Exchanger Element
(Heat Recovery)
Working hour starts
8:15 9:00
ON
HRV
Cooling / Heating
load is reduced
Reduction of
heating / cooling
load (%)
Normal
operation
Return Air
Supply Air
(Heat Recovery)
Decision of mode
(Which is more
energy efficient?)
Normal ventilation (Bypass)
Heat recovery ventilation
Heat recovery ventilation
Normal ventilation (Bypass)
Return Air
Supply Air
(HC0231)
Return Air
Supply Air
(HC0232)
ON
HRV independent Interlocked
operation operation
(HC0230)
Automatic
Changeover
Working hour ends
18:00
OFF
OFF
(HC0233)