Nibe VEDEX 4000 - Connection to Buffer Tanks; Two-Tank System (Open Expansion); Multi-Tank System (Open Expansion); Buffer Tank Charging Logic

23VEDEX 4000
8 Connection to bu󰀨er tanks
Abbreviations
AV Shut-o󰀨 valve
AVT Draining valve
BV Non-return valve
CP1 Charge pump
CP2 Circulation pump
ELK Immersion heater
EXP Level vessel/expansion vessel
LV Venting valve
MV Motor valve
RC Control box
SV1 Shunt valve
SV2 Mixer valve
SV4 Thermal valve
SÄV Safety valve
TG Temperature sensor
VVB Hot water heater
When the boiler’s temperature exceeds the set
charge temperature (for example, 75°C) the charge
pump starts, which then transfers heat from the boiler
to the accumulator. The thermal valve ensures that
the water temperature to the bottom of the boiler does
not drop so much that there is a risk of condensation.
These are outline diagrams. Actual installations must be planned according to applicable standards.
NOTE
EXP
AV
LV
SÄV
AV
AVT
AV
BV
SV4
CP2
SV1
SV2
T
T
T
VVB
ACCUACCU
ELK
RC
AV
AVT AVT
AV
CP1
AV
EXP
AV
LV
SÄV
AV
AVT
AV
BV
SV4
CP2
SV1
SV2
T
T
T
VVB
ACCUACCU
T
ACCU
ELK
RC
AV
AVT AVT AVT
AV
AV
CP1
AV
Docking to two tanks with thermal charge control and open expansion tank
Docking to several tanks with thermal charge control and open expansion tank