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Indirect hot water system

Posted: Sat May 05, 2007 8:11 pm
by GARYF
Hi,
Can anybody help?

I am fitting a new cylinder in a friends house and the system comprises of a baxi gas boiler, mechanical programmer, and an indirect cylinder. There is no room thermostat or trv's. There is also an immersion heater but no cylinder thermostat! How does the boiler know when the water is up to temperature??

Gary.