19
Expansion Vessel
Each Mitsubishi Electric pre-plumbed cylinder is supplied with a suitably sized expansion vessel (white) for the
associated volume of potable water.
In the case of a sealed primary circuit an additional expansion vessel will be required, this needs to be sized to
accommodate the expansion within the entire heat emitter circuit and associated pipework. The installer will need
to make this selection based upon the below sizing equation.
Where:
V : Necessary expansion vessel volume
ε
: Water expansion co-efficient
G : Total volume of water in the system
P
1
: Expansion vessel setting pressure
P
2
: Max pressure during operation
Graph above is for the following values:
ε
: at 70ºC = 0.0229
P
1
: 0.1MPa
P
2
: 0.3MPa
* 30% safety margin is added
Expansion Vessel Sizing
ECOSLIM-150L-PP-MEUK ECOSLIM-180L-PP-MEUK
12 litres 19 Litres
EXPANSION VESSEL VOLUME
27
Pre-Plumbed Slimline Cylinder Installation Manual
Содержание Ecodan PUHZ-HW140VHA-BS
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