Daikin VAM Series Engineering Data page 43

EDMMT712101
Fresh-Up (Pre Vent) Operation [Heat Reclaim Ventilator Unit]
Purpose • Functions
Performs excessive air supply operation to prevent backflow of odor by interlocking with a local (toilet/kitchen) ventilation fan.
(The balance between air supply and exhaust airflow is set to air supply > exhaust air.)
The exhaust fresh-up operation can also be set to prevent the spread of contaminated indoor air and moisture to other rooms by
keeping the room under negative pressure.
(The balance between air supply and exhaust airflow is set to air supply < exhaust air.)
POINT
ON/OFF and changeover of fresh-up operation mode can be done using remote controller or by external input (J1/JC terminal).
Airflow rate mode
Setting by remote controller
OFF
Fresh-up
ON
Note) 1. During group control, only the units for which close signal is input
to J1 and JC perform fresh-up operation. (※)
2. The factory default setting is "Normal" mode (J1 & JC open).
Example of control wiring
Transmission wiring is up to 50m.
J1 JC
P1 P2
Heat Reclaim Ventilator Unit
Remote controller
P1 P2
Switch number that needs to be changed for the system
Field settings using remote controller is required.
Field settings using remote controller
Supply fresh-up ...... [18(28)•7•01] (factory default setting)
Exhaust fresh-up ...... [18(28)•7•02]
Fresh-up operation ON/OFF setting
Fresh-up supply/exhaust setting
Factory default setting
Essential optional accessory
NIL.
VAM-HVE/HVLT Series
Airflow rate mode
J1 & JC:
J1 & JC: Open
Closed
Normal
※Fresh-up
Fresh-up Fresh-up
F1 F2
(Contact on site)
Setting
Mode
switch
No.
01
No.
1A — OFF
18 (28) 7 Supply fresh-up
Fan operation mode
External
Remote controller
Field input
setting for
ventilation
Airflow Between
fan Fresh-up
rate J1-JC
OFF OPEN
Low
Short
ON
circuit
Normal
OFF OPEN
High
Short
ON
circuit
OFF OPEN
Low
Short
ON
circuit
Ultra high
OFF OPEN
High
Short
ON
circuit
Contact on Operation of
site the unit
Short
• Non-voltage normally open contact
Fresh-up
circuit
• Microcurrent contact (Minimum applicable load:
DC12V, 1mA or below)
OPEN Normal
Setting position
02
ON
Exhaust fresh-up
Control System
Fan operation
Fresh-up Fresh-up
"Supply" mode "Exhaust" mode
SA EA SA EA
Low Low Low Low
High Low Low High
High High High High
Ultra
Ultra high High High
high
Low Low Low Low
High Low Low High
Ultra
Ultra high Ultra high Ultra high
high
Ultra
Ultra high High High
high
Specifications for external contact
41