12 VEDEX 3300
For the Installer
Docking to two tanks with thermal charge control and closed expansion vessel
RC
AVT
LV
AV
AV AV
BV
SV4
CP2
SV1
SV2
T
T
T
VVB
ACCUACCU
ELK
AV
AVT AVT
AV
CP1
AV
SÄV
SÄV
EXP
AV
SV3
TG
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 accumu-
lator. The thermal charge control ensures that the water
temperature to the bottom of the boiler does not drop so
much that there is a risk of condensation.
The expansion vessel volume must be dimensioned accord-
ing to the applicable norms.
Closed expansion vessel and emergency
cooling presupposes there being sufficient
cold water supply in event of, for example,
a power cut.
WARNING!
In installations with closed expansion vessel a thermal valve
to prevent overheating must be connected from the cold
water to the boiler cooling coil, then to a suitable drain.
Overflow water from the safety valve is routed to a drain
so that hot water splashes cannot cause injury. The entire
length of the overflow water pipe must be inclined to pre-
vent water pockets and must also be frost proof.
Docking to the accumulator
To Next Page
Loading...
