Hevac thermaflow 150 indirect unvented cylinder

Susie2017

Registered User
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356
A friend has just moved into a second hand apartment. Immersion is not working. It looks totally different to anything I have seen before. Previous occupant has disconnected electrical wires to the cylinder above. It has a manufacture date of 2016 so must have been recently installed but alas she or I have no clue how to switch it on or if wires should even be connected ? I have pictures but am not sure how to post them. There is a separate blue globe cylinder slightly above and to the right of the main cylinder as well as a lump which is working. Anyone have a clue about how this works ? Sorry we are out of our depth. Should we call an electrician first ?
 
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How are they trying the heat it ?

Though the central heating or electric power.
 
They have booked an electrician to come. Hopefully will reconnect wires and get water heating. Just an odd looking immersion, but I'm used to the basic copper cylinder.