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Clive Clive is offline
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Default ACL Lifestyle 2-port valves - maybe failed - how to override? NoDHW

A bit more info.

I think these ACL valves are now supplied by Invensys

On the Inversys Web site is a clear, simple diagram showing the setup
(maybe a bit simplified) of a fully pumped system, with two motorised
(zone?) valves.

The order of components in their diagram is:
Boiler Pump T-connection 1. 2-port valve on flow to HW cylinder
and 2. 2-port valve on flow to radiators

Now on my system the pump is "upside down" i.e. pumping top to bottom
and the valves are below the pump. This configuration "feels" weird to
me but may be perfectly OK.

I have noticed there is a little "lever" to the side of the valve
motor that barely protrudes and certainly can't be moved by me pushing
with my finder tip.

One of the "tags" at the top (bottom?) of the valve motor I slid to
one side and it has now "fallen" flush with the valve motor body. this
tag can no longer be moved and I don't want to break it by fiddling.

This info is just to describe a bit more about the setup in case
someone can help explain how to diagnose / fix the HW supply problem
short term or long term.


Thanks

Clive