Accessories
Active cooling 4-pipe (ACS310)
Address (dipswitch setting): 1101 0100
When cooling is permitted the following applies:
Current menus
Factory
setting
NameMenu
10 °Cmin. temp. cooling flow1.9.5
20 °Ccooling flow temp. at +20°C
15 °Ccooling flow temp. at +40°C
2 hrstime betw. switch heat/cool
Nouse room sensor
1,0heat at room under temp.
1,0cool at room over temp.
25 °Cstart cooling4.9.2
20 °Cstop heating
15 °Cstop additional heat
24 hrsfiltering time
Connections, accessory card
FunctionInput
block coolingX2:23-24
FunctionOutput
Circulation pump cooling (GP13)K1
Mixing valve (QN18), closeK2
Mixing valve (QN18), openK3
Reversing valve (QN12)K4
Mixing valve controlled additional heat (AXC 40)
Address (dipswitch setting): 1010 0000
■
DM calculated on BT25.
■
Additional heat signal is given when GM ≤ starts ad-
ditional heat.
■
The shunt valve controls to maintain calculated temp
on BT25.
■
The shunt valve controls the number of whole
seconds as the difference (calculated supply temper-
ature BT25 supply temperature sensor) * shunt valve
amplification. The shunt valve opens for even num-
bers and closes for odd numbers.
■
The mixing valve is stationary during the waiting
period.
■
The mixing valve closes if DM > start compressor.
■
At start up the shunt valve closes for 120 secs.
NIBE™ VVM 320Chapter 4 | Description of functions26
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