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Identifying flow and return

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In my picture below have I identified correct for flow and return pipes ?

Thanks in advance
 

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In my picture below have I identified correct for flow and return pipes ?

Turn heating on, starting from cold. The flow pipe will become hot, long before the return becomes warm.

There should also be an arrow, formed in the pump casting, denoting the direction of pump flow.
 
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Care to elaborate on what it's for? You can do as above, but can also be traced back to the boiler.
 
You are looking to get an answer to a question that could not be more basic yet are not worried what could happen post cutting the pipe to install the filter
 
You are looking to get an answer to a question that could not be more basic yet are not worried what could happen post cutting the pipe to install the filter
First time fitting on a heat only system. Just want to be sure before start . Got no problem with bunging f n e and vent. Isolating water and wet vav ing the remainder water in pipe so no water when cut it.

But I think I have got the flow and return arrows wrong way. Return is after pump going to 3 port I think. Just need clarifying.

Could not see arrows on pump today

Thanks
 
If the pump is going to 3 port, that’s usually the flow
 
If the pump is going to 3 port, that’s usually the flow
Is this return ( In blue) 'm not up on identifying on heat only. Combi would not be a problem . Thanks
 

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No off the 3 port will be heating flow and cylinder flow for hot water. Have a look at the cylinder there’s 2 connections if indirect, one will be flow from the 3 port the bottom should be return
 
Why not fit it by the boiler? The primary return is most likely under the floor, not in the airing cupboard
 
For the filter to be most effective, as suggested, you need to have it after the primary return from the HW cylinder where it meets the main return and then before the boiler.

That may require the return to the boiler, in the cupboard possibly, to be rerouted to allow space for the filter to be fitted.
 

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