Water Volume And Expansion Vessel Pressure; Selection Of Expansion Vessel - Gree Versati III Series Owner's Manual

Air-to-water Heat Pump Split Versati

7.7 Water volume and expansion vessel pressure

Notes
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pressure should be adjusted to secure proper operation. If the indoor unit is located at the highest position,
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7.8 Selection of expansion vessel

Formula:
V--- Volume of expansion vessel
C--- Total water volume
P --- Pre-set pressure of expansion vessel
1
P -- The highest pressure during running of the system (that is the action pressure of safety valve.)
2
e---The expansion factor of water (the difference between the expansion factor of the original water temperature
and that of highest water temperature.)
Temperature( )
2.5
2.0
1.5
1.0
0.5
0.0
0 50 100 150
Maximum total water volume(liter)
Water expansion factor in different temperature
0
4
10
20
30
40
45
50
55
60
200 250 300 350
Expansion factor e
22
SPLIT TYPE
400
0.00013
0
0.00027
0.00177
0.00435
0.00782
0.0099
0.0121
0.0145
0.0171