I inherited a BAXI when I moved house.
It is connected to a 3-port valve (activated when the CH comes on), a HW
cylinder, (a pump,) and a timer control (POTTERTON EP20000) with
seperate CH and HW switches.
My problem is that we have no wiring diagram and I want to add a
wireless Room Thermostat to the system.
Can anyone help?
What type of Heating system - Gas fired with HW cylinder?
A 3-port valve is a term in common usage in the UK, and means a valve
with 3 openings usually arranged in a "T" shape. Mine is motorised,
located under floor boards near the pump and activates when the CH comes
This newsgroup mostly has people from the US and Canada.
You might want to try
which has some real good people.
They might know what HW and CH are, which you have not explained after
On Mar 22, 10:32 pm, " firstname.lastname@example.org"
Before we even get to that, which may not matter, we
should find out what he means by "adding a wireless thermostat"? At
one extreme, it could mean just replacing
the existing one. At the other, it could mean he wants to
control the temperature in another room seperately and
in addition to the existing thermostat.
We still want to know what kind of a system you are talking about, and
what is CH and HW!!!!!!!!!!!!!!!!!!!!
We have some great experts in this group, but we have to know about
the base system before we can give meaningful advice!!!!!!!
On 3/23/2013 10:28 PM, email@example.com wrote:
Could "CH" be Chilled Water and "HW" be Hot Water? In The U.S., many
office and institutional buildings are heated and cooled by a glycol and
water mix circulating to coils in air handlers that can be mounted in
rectangular housings under the windows or in the ceiling duct work. It
may be that the OP has a smaller scale system in his home? ^_^
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