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  1. Replies
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    It could be a faulty zone valve - most of the...

    It could be a faulty zone valve - most of the 2-port and 3-port zone valves used in domestic installs have an end-switch that normally closes its contact when the valve is opened. In most cases this...
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    The HR80s will close when off although they also...

    The HR80s will close when off although they also have a valve-exercise routine - this occasionally opens them should they be closed for a period of time (cannot remember if this is a fixed time...
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    Normally the zone valve actuator would include an...

    Normally the zone valve actuator would include an end-switch (relay) that is used to provide the heat demand to the boiler which also ensures the valve is open before the boiler fires. Any reason why...
  4. You could give Sunvic a call to see if they can...

    You could give Sunvic a call to see if they can help - there is always a chance that they have changed RF frequencies during model updates.
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    Most modern digital thermostats do not use or...

    Most modern digital thermostats do not use or require the neutral connection so making the blue wire safe (wire it into a terminal strip left in the back box) will be fine. This does assume that the...
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    Regarding LPG and with current prices I think you...

    Regarding LPG and with current prices I think you are right. Even wood pellet prices have doubled recently so it makes the comparisons of total cost of ownership of any period very difficult to...
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    It really does depend on who you talk to within a...

    It really does depend on who you talk to within a company, I have dealt with many heat pump salesmen and a few technical directors who swear blind that controls are either not needed or cannot be...
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    A modern Rayburn is generally as efficient as any...

    A modern Rayburn is generally as efficient as any other conventional boiler as it is really a range cooker with integrated boiler. However a new condensing boiler will be far more efficient (does not...
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    You can control most heat pumps fairly easily, I...

    You can control most heat pumps fairly easily, I have a GSHP at home controlled by Hometronic. It sounds like you have come across one of the companies that uses professional salesmen who have little...
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    Cannot agree with you there Tabath, the Honeywell...

    Cannot agree with you there Tabath, the Honeywell RF products are a reliable and effective way of zoning conventionally plumbed heating systems without additional cables or pipework modifications....
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    In terms of clever zones valves I should have...

    In terms of clever zones valves I should have been clearer - I meant something liek the Honeywell radiator controller that is used by CM Zone or Hometronic and therefore allows room by room zoning by...
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    Do you mean that the boiler is unreliable or...

    Do you mean that the boiler is unreliable or pipework and rads are in poor condition?

    If you are changing the entire system then you have some options to consider. You should really consider some...
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    I don't know if you have already tried, but it...

    I don't know if you have already tried, but it would be easier to buy another receiver and test it in the way you need it to work.

    If you find out that it does not work because the 927 can only...
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    Are you confident and safe working with the...

    Are you confident and safe working with the thermostat/boiler electrics? If you are then you can disconnect the stat either within the boiler or at the room and see if the heating continues to run....
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    Most (if not all) combi boilers work on a hot...

    Most (if not all) combi boilers work on a hot water priority system - when hot water is needed the boiler diverts all of its energy to reheating the hot water as quickly as possible so your landlord...
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    Don't forget to include a timeclock for your hot...

    Don't forget to include a timeclock for your hot water, CM Zone only controls the heating.
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    The CM67 room sensor definitely can do what you...

    The CM67 room sensor definitely can do what you need in regard to radiator controllers in cabinets. And the 4 module address limit on HC60NGs has also been confirmed by Honeywell themselves. There...
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    Not at all :-) I've got 90 terminated Cat5e...

    Not at all :-)

    I've got 90 terminated Cat5e points in my house, a further 40 in my detached garage (with room over the top). By the standards of some of the forum members this is just a fraction...
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    What is the particular HE model? Most of the...

    What is the particular HE model? Most of the installation detail in online, so it would be easy to check if you can confirm the model number.
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    Honeywell always seem to be a little slow in...

    Honeywell always seem to be a little slow in updating their documentation, I assume they must gets loads of support calls about these kind of things when something does not work as aspected.

    With...
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    RF protocol is proprietry Honeywell and not...

    RF protocol is proprietry Honeywell and not published.
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    If your HR80s are using version 1.X firmware (the...

    If your HR80s are using version 1.X firmware (the firmware version is displayed when you press the binding button) the it could be that the automatic adaption (which aims to measure the stroke of the...
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    Certainly not any reported problems on any of the...

    Certainly not any reported problems on any of the Honeywell technical forums.

    Have you tested the system by turning down every HR80 until they display "Off" and then waiting to see if the HC60...
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    No problem :-) Direct boiler compensation...

    No problem :-)

    Direct boiler compensation means that the flow temperature of the water is reduced by controlling the firing of the boiler directly as opposed to using a mixing valve where the...
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    Is the HC60NG LED flashing? If the comms is lost...

    Is the HC60NG LED flashing? If the comms is lost any of the registered modules then it will flash the LED and I'm sure that it fails "safe" (i.e. on) if comms are lost. You could also try factory...
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