82
.
3.25
KaCool D AF –
Comfortable feeling of well-being, thanks to AtmosFeel
Chilled water air conditioning system
Installation and operating instructions
The function of the digital output V1 is fixed depending on the system
(2-pipe / 4-pipe).
The function of the digital output V2 can be configured using parameters.
The digital output V1 is used for the following function, depending on the
application;
2-pipe system
V1 = Heating/Cooling valve
4-pipe system
V1 = Cooling valve
6.15.5 Function of digital outputs V1 and V2
6.15.5.1 Digital output V1
The digital output V2 is used to control the heating valve in a 4-pipe system.
The digital output V2 can be configured using parameter P39 in a 2-pipe
system.
6.15.5.2 Digital output V2
Function
Standard
Min.
Max.
Unit
P39
Function V2 in a 2-pipe system
0 = No function
1 = Heat requirement
2 = Cooling requirement
3 = Unit alarm
4 = 3-point actuator
5 = External ventilation active
0
0
5
24 V DC is connected to digital output V2. The digital output is
not a potential-free contact and can only be used with
appropriate wiring!
Parameter P56
The polarity of digital input DI2 is set using parameter P56 when setting DIP
switch no. 4 to ON.
Function
Standard
Min.
Max.
Unit
P56
Polarity of DI2 when DIP4 = ON (Heating/Cooling chan-
geover using DI2)
0 = Contact closed
Heating
Contact open
Cooling
1 = Contact open
Heating
Contact closed
Cooling
1
0
2
Summary of Contents for KaCool D AF
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