Primary or System?
 

Hi. I have decided against buying a combi boiler. But what is the difference
between a system boiler and a primary boiler?
Thanks.

In an earlier contribution to this discussion,
Paul wrote:

Hi. I have decided against buying a combi boiler. But what is the
difference between a system boiler and a primary boiler?
Thanks.

A system boiler usually has additional components - typically pump,
expansion vessel, filling loop, etc. - ready installed inside its casing. A
non-system boiler doesn't - and these components have to be supplied and
installed externally. [I assume 'primary' refers to an ordinary, non-system
boiler - but am not too familiar with the term].

A system boiler requires less effort to install - but the integrated
components are often proprietary, and more expensive to replace than the
generic components used in a conventional setup.
--
Cheers,
Set Square
______
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"Set Square" wrote in message
...
In an earlier contribution to this discussion,
Paul wrote:

Hi. I have decided against buying a combi boiler. But what is the
difference between a system boiler and a primary boiler?
Thanks.

A system boiler usually has additional components - typically pump,
expansion vessel, filling loop, etc. - ready installed inside its casing.
A
non-system boiler doesn't - and these components have to be supplied and
installed externally. [I assume 'primary' refers to an ordinary,
non-system
boiler - but am not too familiar with the term].

A system boiler requires less effort to install - but the integrated
components are often proprietary, and more expensive to replace than the
generic components used in a conventional setup.
--
Cheers,
Set Square
______
Please reply to newsgroup. Reply address is invalid.

Just what I needed to know. I was looking at the two different types at
http://www.ravenheat.co.uk/products.htm Thanks. Paul.