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Sizing an expansion vessel - help needed

championc · 2024-03-17 21:26:21

Hi all How do I size an expansion vessel ? I'm planning a Heatpump install. The house currently has 10 medium sized double rads. Would a 12litre be sufficient, or if not what size would you recommend ? Thanks in advance

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17-03-2024 10:26pm

#1

championc

Registered Users Posts: 6,063 ✭✭✭

Join Date: July 2003

Posts: 5939

Hi all
How do I size an expansion vessel ? I'm planning a Heatpump install. The house currently has 10 medium sized double rads.
Would a 12litre be sufficient, or if not what size would you recommend ?
Thanks in advance

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#2 18-03-2024 9:22am
John.G

Registered Users Posts: 3,466 ✭✭✭

Join Date: April 2018

Posts: 3373

https://www.boards.ie/discussion/2058341799/sizing-an-expansion-vessel-help-needed

Ypou can't oversize a EV, some use as a rule of thumb, one litre per rad, or just use my decades old spreadsheet.
Expansion Vessel Calculation Championc.xlsx

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