immersion timer

[Perth]

is it possible to have a timer that will activate the immersion at certain times of day but only if the water in tank is below a certain temp. Thus allowing the immersion to be used as a hot water back up but only at times of day when the elec is cheaper.
not sure if this is the right forum but thought you guys might now about timers for elec immersions,
Cheers

 

[kai]

Most Immersion timers work on the principle of only activating the heater when the thermostat detects that the water is under a certain temperature, and that assuming the time is set correctly, it should do a nice job of economically running the hot water systems.

Please check that the Earth Bonding on and around the hot cylinder is up to scratch before doing any work on it. See the brown IEE on-site guide to BS7671:2001 for details, and you will note it mentions having a 13amp fuse-connection unit between the circuit and the immersion heater.
(BS1363 part 4 connection unit).

 

[Perth]

Am I right in saying then that if my timer is set to activate immersion between 1300 and 1600 it will only actually come on during these times when the water is below a certain temp?
Can you give me some names of good immersion timers.
Cheers

 

[ban-all-sheds]

Am I right in saying then that if my timer is set to activate immersion between 1300 and 1600 it will only actually come on during these times when the water is below a certain temp?

Yes - in exactly the same way that if you don't have it on a timer it doesn't try to boil the water - that is why there is a thermostat on the heater. The timer is nothing to do with, and knows nothing about, the thermostat. The thermostat is nothing to do with, and knows nothing about, the timer.

 

[Perth]

Good point - rather incredible that my own brain didn't make that connection! You have to wonder at yourself sometimes ehy.