RE: Underfloor heating and HA control?

["Neil Ball" <neilball@xxxxxxxxxxxxxxx>]

Using floor sensors can be very useful for bathrooms as you can maintain a
minimum floor temperature regardless of air temperature which is fantastic
in winter for keeping your toes warm!

Make sure that you ask you UFH installer for some offcuts of tube to use as
ducting for the sensor and run the tube back to a standard back box for
cable terminations. The tube will allow you to withdraw ad replace the
sensor should it ever develop a fault. Just remember to fit a stop end or
use some duct tape to block of the end of the tube in the floor especially
if you are screeding.

Neil B.


-----Original Message-----
From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
Lehane Kellett
Sent: 19 October 2006 09:42
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] Underfloor heating and HA control?

Whilst we have UFH in concrete, it should be the same.

I embedded some Dallas sensors in the screed to give the floor readings
and have room sensors in addition. These are all linked to TOM 10/xAP
and use scripts in xAP Floorplan which also display the temperatures
around the house on the plans.

As a backup, there is a single Heatmiser UFH stat which at the flick of
a switch(well 3) overrides the HA. Sometime maybe I'll add an RS485 link
to the stat.

The UFH is John Guest with an 8 port manifold. Each port has an on/off
24V JG actuator. These and the pump are all driven from an xAP Netiom,
via relays, controlled by the scripts. A further xAP Netiom drives the
boiler control, which is a Mitsubishi industrial logic controller.

The degree of control can be simple timed on/off through to full weather
compensation, optimum starts, individual zone/time control, etc., etc...
as I get more time!

Lehane





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