Looking for advice on setting up bypass radiators

[floob]

I was wondering what an efficient way of setting up bypass radiators is? I have 9 rads in total, including 2 bathroom towel radiators - the non-bathroom ones are all fitted with a Tado SRV.
My boiler (Vitodens 100-W B1KF) will provide a min output of 3.2kw when heating. So I'm assuming a bypass of some nature is needed?

Firstly what is the difference in setting up a radiator to act as a bypass in these different ways?

1) No Tado SRV fitted, just set to be open (TRV removed)
2) Tado SRV (set to, say, 25 degrees) , but set to be 'independent' from zone controller
3) Standard TRV left to, say, '5' on a scale of 1-6.


I have 2 bathroom towel radiators that dont have a Tado SRV, just always set to low.

Then I have a hallway and kitchen (both on SRV) that I dont really care what temp they hit, should these 2 be set to independent and 25 degrees? Or would this steal heat when its being called for elsewhere?

 

[muggles]

There should be an automatic bypass valve on the system to maintain the minimum flow through the boiler

 

[floob]

There should be an automatic bypass valve on the system to maintain the minimum flow through the boiler

Does that mean that without any bypass radiators at all I should still be fine?

 

[SpecialK]

Does that mean that without any bypass radiators at all I should still be fine?

It will be fine without any. Sounds like you have two already in the bathrooms anyway?

 

[floob]

Yes, those 2 are just left open a bit. So they always heat when one of the SRVs calls for heat.