Description
This accessory provides the heat pump FIGHTER 1127
with the possibility to prioritise hot water charging on
systems with floating condensing. This also requires a
hot water accumulator, for example, NIBE VPA.
Mounting
When mounting VST 12, make
sure port AB is open to port B
(blue colour marking) with the
motor in normal position. When
signalled, port AB must open to
port A (red colour marking).
Technical specifications
IP40
Voltage
Max. charging power
Connections
Part no.
Outline diagram
Värmebärare
Kompressor
(VB), retur
VBflow
VB-fram
VBreturn
VB-retur
Kondensor
Expansionsventiler
Sensor cable to Heat pump
Givarkabel till Värmepump
EXP
SF
AV
Värmebärare
Kompressor
(VB), retur
230 V, 50 Hz, 6 VA
17 kW
Ø 28 mm, Compression ring
067 019
Fläktkonvektor
Extern
Cirkulationspump
19
VXV
Värmebärare
A
B
(VB), fram
AB
23
SÄV
Värmebärar-
AV
P
pump
AV
SF
VVG
88
AV
Fläktkonvektor
INSTALLATION INSTRUCTIONS
VST 12
Components
19
Colour marking
19 Actuator
23 Shuttle valve, radiator/heater
88 Temperature sensor, supplied with FIGHTER 1127
BT
VXV
B
AB
El VVB
SÄV
VVB / ACK
EXP
VST 12
B
A
AB
KV
VV
A
AV
Shutoff valve
SF
Particle filter
VVG
Hot water sensor
VXV
Shuttle valve
VVB/ACK Water heater/accumulator
EL VVB
Electrical hot water heater
KV
Cold water
ELK
VV
Hot water
AV
VB
Heat medium
AV
SF
RTG
FG
23
88
FLK
VVG
VVB / ACK
3