Daikin VAM Series Engineering Data page 54

Control System
Airflow Rate Increase during Bypass Mode
Purpose • Functions
Enhances outside air cooling effect during the intermediate
periods by increasing the airflow rate of bypass mode.
POINT
When a CO sensor is installed, this function is disabled as the
2
unit follows the fan control by the CO
Switch number that needs to be changed for the system
Field settings using remote controller is required.
Field settings using remote controller
Setting
Setting Mode
switch
descriptions No.
Setting airflow
rate increase
19 (29)
during during
bypass mode
Factory default setting
Protective Operation Control during Cold Season
Purpose • Functions
Controls the fan operation to prevent condensation on the main unit and freezing of heat exchange elements when outside air
temperature drops.
Unit operation
When indoor humidity sensor (optional accessary) is not used
When indoor humidity sensor (optional accessary) is used
Air supply/exhaust fan
operating time
-10°C and above
-10~-15°C
Outdoor air
(OA)
Temperature
-15~-20°C
-20°C or below
Optional accessory: Humidity sensor (for RA) BRYH241A100
52
sensor.
2
Setting position
01 02 03
No.
Airflow
Increase Ultra high
14 rate
No Fixed
Increase
Indoor (RA) absolute humidity (Unit: g/kg(dry air); the figure in parenthesis is relative humidity at 25°C)
4.9 (25%) or below 4.9~6.9 (35%)
Air supply: ON for 45 minutes/OFF for 15 minutes
Exhaust: Continuous operation
Air supply: ON for 30 Air supply: ON for 15
minutes/OFF for 30 minutes minutes/OFF for 45 minutes
Exhaust: Continuous Exhaust: Continuous
operation operation
Unit operation
When switched to bypass mode during "Auto" ventilation
mode, the airflow rate is automatically increased.
Fan notch when airflow rate increase is set
04
Ventilation
fan
Airflow
High
field setting
rate
Fixed
Low
Normal
High
Low
Ultra high
High
Outdoor air (OA)
Air supply/exhaust fan operating time
temperature
-10˚C and above Continuous operation
Air supply: ON for 45 minutes/OFF for 15 minutes
-10~-15°C
Exhaust: Continuous operation
Both air supply and exhaust: ON for 5 minutes/OFF
-15°C or below
for 55 minutes
6.9~8.9 (45%)
Continuous operation
Air supply: ON for 30
minutes/OFF for 30
minutes/OFF for 45 minutes
minutes
Exhaust: Continuous
operation
Both air supply and exhaust:
ON for 5 minutes/OFF for
EDMMT712101
Remote controller
Ventilation mode
Heat
Bypass
exchange
mode
mode
Low High
High Ultra high
Low High
Ultra high Ultra high
8.9~9.9 (50%) 9.9 (50%) and above
Air supply: ON for 15
Exhaust: Continuous
operation
55 minutes
VAM-HVE/HVLT Series