adjusting thermostat

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adjusting thermostat

Post  nambiker on Fri Apr 17, 2009 8:30 am

hi guys can anyone give me info on how to adjust the internal thermostats.

many thanks

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Re: adjusting thermostat

Post  Mike the Boilerman on Sat Apr 18, 2009 2:47 pm

I'm not sure you can. Well put it this way, I certainly can't!

On the other hand I believe the control board is very configurable if you know how to program it, but this info is not documented in the instruction book or anywhere public. Gledhill engineers will know more than me about this.

Cheers, Mike

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Re: adjusting thermostat

Post  nambiker on Sat Apr 18, 2009 4:16 pm

cheer mate. i was under the impression that you could adjust the thermostat as the installers have to set it to certain temps... not too sure??

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Re: adjusting thermostat

Post  Mike the Boilerman on Sun Apr 19, 2009 10:06 am

I think you're confusing the temperature of the water in the thermal store with the temeperature of the water delivered to the taps. Not the same thing at all!

The electronics control the latter, using the heat energy available from the former. The extremely hot store water (70 to 80 degrees) heats the tap water in the heat exchanger to around 52 degrees C. This is achieved by the control board running the pump faster or slower as necessary to get a steady tap water temperature.

On older Pulsacoils the immersion heaters have adjustable thermostats to control the store temperature. I expect this is what you are thinking of. On the A-Class there are no thermostats, the immersion heaters being swithced on and off by the control board in response to temp info received from digital data senders inside the heat store.

Cheers, Mike

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