Daikin VAM Series Engineering Data page 46

Control System
Operations by External Input
Purpose • Functions
Operates Heat Reclaim Ventilator Unit by external contact signal.
Note) If this function is used, the use of standard remote controller, interlocking with air conditioner, and control by centralized
equipment or external input terminal cannot be performed.
POINT
It is possible to stop operation, change the airflow rate (high/low) and change the ventilation mode only with an external contact
signal.
Setting the switch (SS1) on the printed circuit board to "H" or "M" switches to the contact control mode.
(Be sure to make this setting before turning on the power.)
Example of control wiring
(Contact on site)
J1 J2 J3 JC
SS1
P1 P2
Heat Reclaim Ventilator Unit
Switch number that needs to be changed for the system
The settings of the switch (SS1) on the printed circuit board must be made before turning on the power.
SS1
NOR ← The unit will not work properly in this position. (Factory default position)
H
← Used to set the "High" fan speed to the ultra-high notch
M
← Used to set the "High" fan speed to the high notch
Essential optional accessory
NIL.
44
Contact on site
Functions External contact
Open
Ventilation rate
(J1) (JC)
changeover
Closed
Open
Start/Stop (J2) (JC)
Closed
Open
Ventilation mode
(J3) (JC)
changeover
Closed
Operation External contact specifications
Ultra high, High
Low
• Non-voltage normally open
contact
Stop
• Microcurrent contact (Minimum
Operation
applicable load: DC12V, 1mA
or below)
Heat exchange mode
Bypass mode
EDMMT712101
VAM-HVE/HVLT Series