baxi instant 105e

[quality]

has anyone fitted an external EV to one of these as opposed to replace a failed original. My only concern is the these are not the average EV as part of it is used for the DHW preheat I believe. it would make my life so much easier if it possible as the boiler location and access is very poor. One for GASMAN :cheesy:

 

[Riley]

Call manufacturers dude theyre the only ones who can tell you for sure

 

[gassafe]

Does preheat really need expansion? I haven't noticed other boilers have this dual expansion tank... It would expand back into the water mains

 

[SmokeyJ]

Fitted an external one on a Potterton Performa he. Same boiler different badge I think. Potterton said to connect it to the 1/2" capped connection on the return valve. Can't remember why, but had no issues with it.

 

[bewsh]

You can fit an external expansion vessel with no problem. Preheat will still work fine.

 

[Billy Bob Bob]

has anyone fitted an external EV to one of these as opposed to replace a failed original. My only concern is the these are not the average EV as part of it is used for the DHW preheat I believe. it would make my life so much easier if it possible as the boiler location and access is very poor. One for GASMAN :cheesy:

yes can be done without disabling pre heat but go for a 12 L vessel,10 L was never really upto it

 

[quality]

Thanks for that guys