Replacing immersion heater booster switch

[notsohandyman1]

I have purchased a timelag switch to replace my existing immersion heater booster switch, as we are always leaving it on, but the new one has different connectors. The current one has marked N1, N2, L1, and L2:

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• notsohandyman1
• 2 Oct 2014
• 1

But the new one has two "N", and S/L and Live. Presumably N1 and N2 map to the two"N" connectors and it doesnt matter which one goes to which, is that correct? As for the lives, AFAIK L1 is the switched live, so I'm planning on connecting the L1 wires to S/L and L2 to "Live".

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• notsohandyman1
• 2 Oct 2014
• 1

Sound reasonable? Sorry for the beginner's question, but even though I'm fairly confident I know what I'm doing, I'd like to avoid blowing up our electrics!

 

[EFLImpudence]

Yes you are correct regarding the wiring.

Is the other flex in the picture for the other element?
If so, how is it controlled?

 

[notsohandyman1]

Great, thanks for confirming - the other flex goes to an adjacent switch that controls the shower pump. The two can be switched off/on independently of each other and I plan on keeping the same configuration

 

[EFLImpudence]

Oh, that's ok then.
I thought it looked as if you could have two immersions on at once.

 

[Adam_151]

Looking at the product on the Danler's website.

It does not incorporate a means of isolation for the heater, So you really need to retain the existing isolator as well as the new controller