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Replacing my old flash immermat timer to a hive thermostat - H & HW V4 with hive nano hub

Joined
29 Nov 2025
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Hi All,

Please see image below, how can I wire up a hive v4 wireless heating and hot water smart thermostat from a old flash immermat timer for oil boiler for house heating and hot water?

Old flash immermat timer
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To

Hive V4 Wireless Heating & Hot Water Smart Thermostat White​

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Thank you.
 

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