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while flame sensing electrodes are responsible for checking if there is a flame present in the burner to make sure that the boiler doesn't keep supplying gas without a flame
VAILLANT ECOTEC PRO DISPLAY BOARD CLOCK 20040154
32 HE Megaflo System IE
VAILLANT ECOTEC PLUS 612 615 618 824 & PRO 24 MAIN HEAT EXCHANGER 0020135129
Flow Rate: 5 L/min @ 3 Bar
Honeywell Home T3R Wireless Programmable Thermostat White Y3H710RF0053 Actuator Motor & Cartridge while flame sensing electrodes areHoneywell Home T3R wireless programmable thermostat is providing intuitive time and temperature control, the Honeywell T3R wireless programmable thermostat is suitable for use in domestic heating systems, in social housing, new construction and mass installation situations. Compatible with a wide range of boilers and systems including 24 V to 230 V on or off, such as gas and oil boilers, combi boilers and heat pumps, T3R offers OpenTherm control but
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