Running of electric cabling


Postby roddymcdowall » Tue Oct 12, 2010 10:25 am

I have a thermostat that has cabling running from the thermostat to the controller and I have a ground on the cable. Unfortunately the cable runs through the wall and under the flooring and then back up through the floor to the contrller.

What is the best way for me to run a replacement cable without lifting the floorboards and digging out the wall?

Thanks.
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Postby stoneyboy » Tue Oct 12, 2010 10:05 pm

roddymcdowall,
Buy a wireless thermostat but make sure it's a 240v one.
end
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Postby ericmark » Wed Oct 13, 2010 8:37 am

Oh nice simple one.

Use a wireless thermostat.
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Postby roddymcdowall » Wed Oct 13, 2010 9:26 am

I understand the concept but I do not see how that will work in practice.

I have a mechanical timer switch that has the timer and also two single ganged switches on it, one for heating and one for hot water. The supply from this switch goes to a control box which has the thermostat lead also going to it.

So I have a thermostat which forms part of the circuit for a relay to a solenoid valve which opens and allows hot water flow to the radiators.

I am considering replacing the mechanical timer switch and the mechanical thermostat.

If I go with a remote thermostat I suppose I will have to purchase a new Timer switch that works with it.

Which unit and brand would you advise? Am I correct to assume that a thermostat that does not use wires is a wireless unit but has does the controller know when the unit is off and on or open or closed?


Thanks
roddymcdowall
Posts: 7
Joined: Mon Nov 09, 2009 3:10 pm


Postby ericmark » Wed Oct 13, 2010 4:50 pm

There are many ways to work telemetry between items wireless but as they become more complex the price goes up.

Very quickly with an old non condensation system it becomes uneconomic and one starts to look at whole new system.

However some thoughts.
1) Most motorised valves have a mid position which will allow both hot water and central heating but using this one looses the control.
2) Using thermostatic radiator valves would return the control lost.

What ever you do is likely a botch in some way so you have to consider how much it is worth the botch.

There are thermostats with timers built in and there are wireless versions but the price starts to climb you have to work out how much it is worth spending on a botch.
ericmark
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Joined: Fri Oct 02, 2009 8:49 pm
Location: Mold, North Wales.


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