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Apologies for not being computer related, but have you any experiences with Wireless Room Thermostats?.
I have had a look at a number of reviews, but still cannot form an opinion if these devices are 'worthwhile', in perhaps resolving temperature issues in various locations of a property, without the need of wiring?.
One particular model that is on my watch list: Salus Digital Room Thermostat RT500RF http://www.salus-tech.com
Any help or advice on the above questions would be welcomed and appreciated.
Should have added that I have wireless thermostat (not that model).
The advantages of this type of stat rather depend on the stat it's replacing. If your existing electromechanical stat is good quality, properly installed, and, most importantly, WELL SITED, there is little to be gained by fitting this type of control, unless you want to set different temperatures at different times of the day. Particularly if you have a combi boiler, they are an easy way to re-position your thermostatic control, without a lot of re-wiring. With other types of boiler, some re-wiring may be needed. If you have a modern condensing boiler, it is worth speaking to the boiler manufacturer. Many of them sell contollers, specifically suited to their boilers, which have RF stats, but incorporate other energy saving features, as well
Perhaps I should add further. The boiler is approx 6 years old, not combi type. All the radiator's throughout the property have thermostat's individually installed. The water cylinder as its own thermostat, worked via a programmer-timer.
When the system was 'upgraded', the electrician installed a room thermostat on a second floor stairs-landing, which according to the inspector who did the final checks, stated that this was in the wrong place. Apparently, the thermostat should have been installed at ground- main use area. Not wanting further inconvenience and upset of re-positioning, it was decided to leave things alone.
We now have the problem that the thermostat is 'sensing' the stairs-landing temperature, near a radiator, and not the ground or upper floor area temperature. Hopefully, by simply installing a wireless receiver unit in place of the stairs-landing thermostat, we can then have the hand-held temperature unit placed in the best temperature sensing location!.
We could probably work something out with the various radiator thermostat's, but considered the wireless experiment a better and easy choice, hence advice apreciated?.
The normal advice is that the thermostat should not be in the main room as that is likely to be warmer then elsewhere due to secondary heat and therefore it will shut down the boiler leaving the other rooms cold. A hallway or landing could be the best place. Second floor seems a bit odd noting that heat rises. Wireless thermostats are not hand held but are usually fitted to a wall instead of a wired thermostat. You do have to change the batteries and as with all wireless devices its reliability depends on what is between it and the receiver on the boiler. I very much doubt that a wireless thermostat will solve some rooms being warm and others cold.
Any thermostat should not be near a radiator.
Good practice guide look at page 17 for location of thermostat
Unless your property has some specific reason to have the stat upstairs, it is unlikely to be the best place. The advantage of RF stats is that the "base unit" can be installed at the current stat position, thus minimising re-wiring, and the sensor can then be sited wherever required. The range tends to be a bit limited, particularly in terms of intervening walls, so you need to be sure that the one chosen is suitable. The ground floor hallway is often the best location, but wherever you choose needs to be "representative" and free from draughts. Too often stats get fitted where it is EASIEST to wire them, rather than the BEST place. You should also avoid a location where the heating is controlled by thermostatic valves. You should, of course, have any changes to the control of a gas boiler carried out by a GasSafe installer.
frybluff has mentioned the main advantage to having a wireless room-stat -it can be sited anywhere that's within signal range of the receiver.
That means you can - if it helps - move the thermostat from room to room.
Broadly speaking, wireless stats work very well - primarily because there's not a lot to go wrong. Room-stats are just switches that are controlled by ambient air temperature, so should be sited where they are likely to call for heat before you feel cold.
When our heating system was upgraded about 3 years ago we chose to go with the Danfoss wireless room thermostat system and it has been very reliable. The sender unit is mains wired and the remote unit uses a single lithium cell that has yet to be replaced. We have moved it around a couple of times, initially we had it in a study but eventually found a position just off a hallway that was not subjected to draughts and where it was not affected by sunshine.
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