Nibe FIGHTER 1330 - Combined Cooling;Heating Modes with Accumulators; Connecting Cooling;Heating Modes with Accumulators

Description of functions – Expansion card 2
FIGHTER 1330
46
The collector circuit is connected to a heat exchanger
via a three way valve (VXV-KV A/B). The other side
of the exchanger is connected to the heating medium
circuit via a shunt valve (SV-K) and a circukation pump
(PC-K).
When cooling is required (activated from the outdoor
sensor and any room sensor) the three way valve and
the circulation pump are activated. The shunt valve
regulates so that the cooling sensor (KG) reaches
the current set point value that is equal to the outdoor
temperature and the set min. value for the cooling tem-
perature (to prevent condensation).
For connection of, and function for, room sensors, see
section “Description of functions – Basic functions” >
“Room control”.
Connection of passive cooling with 2
pipe system
Three way valve (VXV-KV A/B) is connected to termi-
nal block X6B:1 (230 V), X6B:2 (N) and X6B:3 (NC)
alternatively X6B:4 (NO).
The shunt valve (SV-K) is connected to terminal block
X6B:8 (230 V reduce signal), X6B:9 (N) and X6B:10
(230 V increase signal).
There is a potential free relay for the circulation pump
function (CP-K), which can be used as control voltage
or power supply (Max 6 A, 250 V). If the relay is used
as control voltage the supply can be bridged inter-
nally from X13:4 to X6B:22, use X13:9 as N and then
receive the signal on X6B:23. Max current must be 0.4
A and the control voltage is 230 V.
External supply to the control signal/power supply for
the circulation pump (CP-K) is connected to terminal
block X6B:22 (max fusing 6 A and 250 V) and the con-
trol signal/power supply is on X6B:23.
Passive cooling with 2 pipe system
+Exp. card 2
LEK
X6B
X13