help with unvented cylinder, cobi with dual channel hive

UNG said:

Not sure why this should be a such head scrataher when you can pick virtually any "S" plan diagram and substitute the the dual channel programmer with the dual channel hive

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UNG said:

Not sure why this should be a such head scrataher when you can pick virtually any "S" plan diagram and substitute the the dual channel programmer with the dual channel hive

Click to expand...

UNG said:

Not sure why this should be a such head scrataher when you can pick virtually any "S" plan diagram and substitute the the dual channel programmer with the dual channel hive

Click to expand...

cm electical said:

so at the boiler not cable goes into terminal 1, switched live in???

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davesparks said:

As I have already said
The feed from the switchfuse goes to the boiler, only the boiler, nothing else.

Terminal 2 from the boiler is the 230V feed out to the external controls. Terminal 2 supplies power to the external controls.

Terminal 1 at the boiler is the switch live in.

There is more than one way of connecting this system but the following will work.

Run 3 core flex from switchfuse to boiler.
Connect the brown to L, the blue to N and the earth to earth.
Do not connect anything else to the supply from the switchfuse.

Using the 5 core flex you have already run from boiler to terminal box.
Connect blue to N and earth to earth at both ends.
Connect brown to boiler terminal 2 and the live supply of the controls terminal box.
Sleeve the black with brown sleeving at both ends, connect it to terminal 1 at the boiler and the boiler switched live at the controls terminal box.
Make the grey safe at both ends.

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cm electical said:

so what goes to 3 and 4 in the hive

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davesparks said:

As I have already said
The feed from the switchfuse goes to the boiler, only the boiler, nothing else.

Terminal 2 from the boiler is the 230V feed out to the external controls. Terminal 2 supplies power to the external controls.

Terminal 1 at the boiler is the switch live in.

There is more than one way of connecting this system but the following will work.

Run 3 core flex from switchfuse to boiler.
Connect the brown to L, the blue to N and the earth to earth.
Do not connect anything else to the supply from the switchfuse.

Using the 5 core flex you have already run from boiler to terminal box.
Connect blue to N and earth to earth at both ends.
Connect brown to boiler terminal 2 and the live supply of the controls terminal box.
Sleeve the black with brown sleeving at both ends, connect it to terminal 1 at the boiler and the boiler switched live at the controls terminal box.
Make the grey safe at both ends.

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davesparks said:

The Hive replaces the programmer.
Terminal 3 is DHW on and terminal 4 is CH on.

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cm electical said:

this is last post im sick now, this has to be correct?

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UNG said:

No you have terminal 2 on the boiler linked to terminal 1 in the wiring centre which is unnecessary

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davesparks said:

The Hive replaces the programmer.
Terminal 3 is DHW on and terminal 4 is CH on.

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davesparks said:

Yes it is, otherwise the wiring centre won't have a permanent live for the valves.

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davesparks said:

Yes it is, otherwise the wiring centre won't have a permanent live for the valves.

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davesparks said:

Yes it is, otherwise the wiring centre won't have a permanent live for the valves.

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UNG said:

Given that the diagram still shows the live feed from the spur to terminal 1 of the wiring centre it isn't needed

In fact the boiler may be fed from terminals 1 & 2 in the wiring centre as in the diagram posted at #26 by the OP

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