Daikin VAM-FA8VE Technical Data Manual page 164

5.7.5 Easy Installation and Service Maintenance
2
5
5.7.6 The Operation is Available When the Outdoor Air Temperature is Down to -15°C
5.7.7 The High Efficiency Filter (that has 65% of Average Dust Collecting Efficiency) is Suitable
5.7.8 Additional Optional Accessories
162
• HRV • VKM-GA(M)V1
Downsized
Model name
VKM50GAMV1
VKM50GAV1
VKM80GAMV1
VKM80GAV1
VKM100GAMV1
VKM100GAV1
Parallel air flow system (Daikin)
This system prevents misconnection and
simplifies the installation work
SA
RA
(Operation when the outdoor air temperature becomes lower than -10°C)
When the outdoor air suction temperature becomes lower than -10°C, the unit is changed to intermittent
operation to prevent freezing of the heat exchanger element and dew condensation within the unit.
Intermittent operation
The outdoor air thermistor (standard equipment) within the unit detects the temperature. According to
the detected temperature, the following operation determines.
<Step 1>
•
The air supply fan is changed to intermittent operation, when the temperature is lower than -10°C.
•
The intermittent operation of the air supply fan is changed to an operation of each cycle for 45
minutes' operation after stopping operation for 15 minutes.
•
The exhaust fan operates continuously according to setup.
<Step 2>
•
When the temperature becomes lower than -15°C, the unit stops operation to prevent any defect,
such as dew condensation and freezing. The unit does not ventilate.
But, to detect the elevation of the outdoor air temperature, the unit operates for 5 minutes per hour.
High efficiency filter
Air filter Heat exchanger element
Built-in optional high efficiency filter
It greatly reduces the installation space.
The installation of access doors and the unit can be reduced.
• HRV • Heat Reclaim Ventilation
Height (mm)
387
Cross air flow system (Others)
SA
OA
RA
EA
(HC0234)
Maintenance cover
Control box
Install the high efficiency
filter to meet the direction
of the arrow of the name plate.
High efficiency filter
EA
OA
(HC0235)
Name plate
AIR
FLOW High efficiency
The side of heat
filter
exchanger element
Rail
Rail
Install the high efficiency filter
along the inside of the rail.