The Efficient Home Forum

I have emailed Honeywell directly about the issue of the insertion sensor.
They tell me that it is OK to lengthen or shorten the cable.
This may be helpful for anyone looking to find a good position for their CS92.
Francis

I agree with the merit of the recmmended communications test before investing large sums of money in a large Evohome system. I have a large installation that required 20+ TRVs and two Evohome contollers for the number of zones I wanted. It is also installed in a property that has metalwork supportin...

Your reply re the optimal siting of the CS92 has made me think (shocking I know). Maybe the ideal location for the CS92 would be much away from the cylinder higher in the airing cupboard or even outside the airing cupboard. In both cases I would need to extend the sensor cable with a length of two-c...

Thank you. I suspect that there is merit in resiting my BDR91. As explained in another thread, there is limited scope for resiting the CS92. One thing I would observe is that if the polling of the CS92 is "only" every 4 minutes then there is some considerable scope for the HW to overshoot ...

Thank you. I too will set the HW overrun to zero minutes. This said, I can see the merit in allowing a boiler to dissipate the heat when demand is shut off. The problem with a typical S-plan or Y-plan is that the cessation of demand is implemented by act of closing the valves thereby cutting the obv...

I have installed two heating only Evohomes recently. Both work without problems. However, I am coming to realise that installing hot water control introduces a lot of additional problems. This is especially true when retrofitting Evohome to work with an existing S-plan or Y-plan where typically the ...

To tidy up the wiring of an Evohome installation, I wish to shorten the cable of an insertion sensor that is attached to a CS92 and inserted into an unvented cylinder. I wish to shorten the cable to about 600mm as the excess looks unsightly. Does anyone know of a technical reason why this would impa...

I have just installed an Evohome installation controlling both heating and hot water. The Evohome controller displays the HW temperature as registered by a thermostat transceiver (CS92) attached to a thermostat insertion sensor. The sensor is inserted into dry socket in an unvented cylinder. To test...

I have just completed an Evohome installation controlling both heating and hot water via an S-plan. The Evohome controller interacts with the S-Plan control rather than with the boiler or pump directly. I understand how the heating system works. I am looking to set the hot water parameters under the...