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Rick Mather
Rick Mather, HVAC Technician
Category: HVAC
Satisfied Customers: 3634
Experience:  35 years experience, HVAC
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Hi I have a Heatline C28 Condensing boiler I have just fitted

Resolved Question:

Hi I have a Heatline C28 Condensing boiler I have just fitted a new larger radiator and since then it appears that if pressure at cold is 1 bar and I put the boiler on to full heat because of the cold weather it goes up to over 3.5 is there a problem about to develop ?
Alan Westwater Liverpool
Submitted: 6 years ago.
Category: HVAC
Expert:  Rick Mather replied 6 years ago.

Rick Mather :

Sounds like the expansion tank is too small for increased volume of water in system now

JACUSTOMER-0ctrzrat- :

What expantion tank this is a combi boiler?

Rick Mather :

Any time you heat water there will be expansion tank to take up any expansion of heated water

JACUSTOMER-0ctrzrat- :

Please explain, where is the expansion tank is situated on this boiler and how would I fit a larger expansion tank as it must be integeral to the boiler casing.

Rick Mather : You may have bad on boiler itself or use external one which can be larger
JACUSTOMER-0ctrzrat- :

Please explain as I cannot understand your last reply.

Rick Mather :

The tank is part of boiler and it may work just to replace it or have external one fitted

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