Immersion heater problem
Hi,
I rent a house with an electic immersion heater that runs from Economy 7 at night and has a 1hr boost switch for daytime use. The water used to get scolding hot, which, although arguably dangerous, was great as it meant only a small quantity of hot water together with lots of cold water was required for a bath. The element and thermostat has recently been replaced (fitted at top of tank) and now, although the water is very hot, there does not seem to be so much of it so by the time a bath has filled the hot water has become luke warm and no cold water is needed. This means 1 hot bath and that's it for the day. I suspect the water does not heat up to such a high a temperature as before. The thermostat (manufactured by BACKER)is on its max setting and is 18" which is the same length as the previous one (PULLIN). I do not know the length of the element but the tank is about 30" so I guess the element would be 27". The element has a thermal cut-out device which I do not remember the old one having. Perhaps this is limiting the temperature. What are the implications of bypassing this device? Do different makes of thermostats have higher temperature settings? Any other suggestions/ideas? Thanks |
wrote in message ups.com... Hi, I rent a house with an electic immersion heater that runs from Economy 7 at night and has a 1hr boost switch for daytime use. The water used to get scolding hot, which, although arguably dangerous, was great as it meant only a small quantity of hot water together with lots of cold water was required for a bath. The element and thermostat has recently been replaced (fitted at top of tank) and now, although the water is very hot, there does not seem to be so much of it so by the time a bath has filled the hot water has become luke warm and no cold water is needed. This means 1 hot bath and that's it for the day. I suspect the water does not heat up to such a high a temperature as before. The thermostat (manufactured by BACKER)is on its max setting and is 18" which is the same length as the previous one (PULLIN). I do not know the length of the element but the tank is about 30" so I guess the element would be 27". The element has a thermal cut-out device which I do not remember the old one having. Perhaps this is limiting the temperature. What are the implications of bypassing this device? Do different makes of thermostats have higher temperature settings? Any other suggestions/ideas? Thanks AIUI - the economy 7 immersion should be fitted at the bottom of the cylinder (so it heats all the water). Regards Jeff |
Quote:
Are you sure you havn't now got an 11" immersion? Shut gate valve run bath hot tap 'till it stops, buy cheap immersion spanner from bnq, surround it with towel, remove immersion, check length, replace if long renew if short. Open gate valve shut tap. |
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On Sat, 05 Mar 2005 16:47:29 +0000, Jeff wrote:
wrote in message ups.com... Hi, I rent a house with an electic immersion heater that runs from Economy 7 at night and has a 1hr boost switch for daytime use. The water used to get scolding hot, which, although arguably dangerous, was great as it meant only a small quantity of hot water together with lots of cold water was required for a bath. The element and thermostat has recently been replaced (fitted at top of tank) and now, although the water is very hot, there does not seem to be so much of it so by the time a bath has filled the hot water has become luke warm and no cold water is needed. This means 1 hot bath and that's it for the day. I suspect the water does not heat up to such a high a temperature as before. The thermostat (manufactured by BACKER)is on its max setting and is 18" which is the same length as the previous one (PULLIN). I do not know the length of the element but the tank is about 30" so I guess the element would be 27". The element has a thermal cut-out device which I do not remember the old one having. Perhaps this is limiting the temperature. What are the implications of bypassing this device? Do different makes of thermostats have higher temperature settings? Any other suggestions/ideas? Thanks AIUI - the economy 7 immersion should be fitted at the bottom of the cylinder (so it heats all the water). Either increase the thermostat a little or give the heater more time. It will need about 2 hours to fully heat up a the cylinder. Do not defeat the manual reset cut out - it's there in case the main thermostat fails on. -- Ed Sirett - Property maintainer and registered gas fitter. The FAQ for uk.diy is at http://www.diyfaq.org.uk Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html |
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