BLODGETT

These types of system can certainly save on running costs, particularly where different rooms are predominantly used at different times of the day. They do, however have a couple of drawbacks, which one should consider. Unless one specifies to the contrary, radiators in each room will be sized to maintain a particular temperature, against loses to EXTERNAL, in cold weather. A margin is then added to boiler sizing to give prompt heat up. If one, then, controls individual rooms on a TIME and temperature basis, there will be heat losses from one room, TO ANOTHER, with which the radiators may struggle to cope, particularly in very cold weather. In milder conditions, they will probably cope, OK. Modern boilers, and systems, can usually cope well with this type of control; older boilers, and systems, tend to be less FLEXIBLE. One should check, with an independant GasSafe engineer, not some salesman, that one's system is suitable!

spuds good, but I did get the transmitter and receiver the wrong way round. The transmitter of course is the sensor part which is in the room and is battery operated while the receiver is the bit that in my case is attached to the boiler and plugged into the mains control box.

Purely for information we bought our system from these guys as we wanted mains pressure hot water without having a pressurised tank and a combi-boiler was not man enough for the job at the time. Maybe they make them bigger now. Our Heat Bank came fully fitted with all controls, including the wireless thermostat so all the plumber had to do was install the boiler, connect the heat bank to the boiler and plug both into the mains power and water supply.

Maybe I have the wrong end of the stick, but surly Wireless means you can move the thermostat wherever you want within reasonable distance of the sender unit, so if it is in the 'wrong place' just move it!..

Terry

chub_tor

"The sender unit is mains wired and the remote unit uses a single lithium cell that has yet to be replaced."

It's actually the other way around. The sender unit is the remote, Lithium cell powered part. It simply calls for heat and and sends an 'off' signal. The mains wired device at the boiler is the receiver - it's the one that switches the boiler's heating cycle on and off. The receiver unit is often connected to the boiler's wiring block via a 2-core (eBus) bus cable, but as already mentioned, this is something that should be done by a qualified person.