WebNov 21, 2011 · It has three connections. One wire is yellow and black sleeved and is connected to the metal thermostat housing (so must be earth). The other two wires are coloured red and blue. Their terminals both go to 240V (wrt earth) when heating is on, both are at 0V when heating off. The new thermostat is a Horstmann HCT2. WebCodice Dual Combined High Limit Thermostat & Control 542902. £9.95. £3.50 postage. or Best Offer. Dual Thermostat 30 - 70 C Control STAT500015 Boxed With Instructions. New. £9.95. £3.50 postage. or Best Offer.
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WebDual cylinder thermostats combine both the controller and the limit thermostats into one common unit. If you have a boiler control thermostat, it should always be set to a higher temper-ature than that of the cylinder thermostat. In most boilers, a single boiler thermo-stat controls the temperature of water sent to both the cylinder and radiators, WebOct 16, 2024 · Regardless of the temperature on the hot water cylinder thermostat, it won't get any hotter than the water from the boiler supplying it. For example: If the boiler is set to 55 degrees the hot water cylinder … poppy line north norfolk
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WebJun 10, 2013 · The hot water cylinder is located on the first floor. A three core cable is running from the wiring centre to the cylinder thermostat and linked to the common, no demand and heating required terminals of the thermostat. At some point a second cylinder has been added next to the original to increase the volume of stored hot water. The new ... WebHire the Best Thermostat Repair Services in Centreville, VA on HomeAdvisor. Compare Homeowner Reviews from 9 Top Centreville Thermostat Repair services. Get Quotes & … WebJan 17, 2024 · If turning down the cylinder thermostat stops the boiler, the boiler will be OK. As far as the boiler is concerned it is switched 'on' or 'off' depending upon the demand from the external controls. So it sounds as if you have a wiring fault somewhere. From your photo it looks like you have an 'S Plan' system. This has '2 Port' motorised valves. poppy lissiman bebishi