Heating Thwerostat

[jebar]

Hi to all & happy new year,
I have hot water heating system for my home ankankconsiste of :
1.storge tank
2.3 immesured heater element each one 5kw input
3.1 immesured bulbe mechanical thermostat
4.hot water pump,piping system,fancoils.
5.the system is outdoor.
there is defect in the thermostat is there any way to help me to repair it or any suggestion because I cant find the same type ,please.

[Brian_UK]

With the immersion bulb thermostat it may be faulty due to broken electrical contacts or the sensing liquid in the bulb has leaked out.

Possible alternatives are to get a strap-on thermostat to fit to the outside of the tank
or
Use an electronic thermostat where you put the sensing probe into the immersion socket. You may need to add a relay/contactor between the control and the heaters to carry the electrical load.

[jebar]

Thanks Brian but any information to do such thing .

[fridge doctor]

Hi jebar,

You must be mistaken with your figures. You say this is a home hot water system? Is this just to supply hot water, or does it provide heating for the house? Because you say there are 3 x 5Kw immersion heaters in the tank... that is 62 amps! More than most household incoming supply lines. Please clarify and then maybe we can go on.

Trevor