Horstmann Centaur C21 To British Gas Hive

Jonnylogan85 · 28 Dec 2015

Hi!

Trying to replace Horstmann Centaur C21 to British Gas Hive. The wiring is confusing me a little... The existing wiring as attached picture. The control unit is connected to a Horstmann HRT3 thermostat.

Any suggestions as to how to wire up, greatly appreciated....

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Horstmann Centaur C21 To British Gas Hive

Jonnylogan85

DIYnot Local

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