I'd like to be able to run my CH at lower flow temperatures during the summer, but am restrained by the Unvented Cylinder (not Vaillant) requiring 70 degrees flow in order to satisfy the cylinder stat at ~60 degrees (to prevent legionella).
I've looked at the various Vaillant controls available and whilst the VR65 seems to be able to achieve this, it doesnt cater for multiple heating zones.
So the plan is to use an ebus adapter which takes the SL from the HW zone valve and adjusts the flow temperature on the boiler to MAX, reverting back to the set flow temperature once the HW zone valve closes.
Has anyone done something similar? And any pros / cons compared to using the V65 and the supplied NTC?
I've looked at the various Vaillant controls available and whilst the VR65 seems to be able to achieve this, it doesnt cater for multiple heating zones.
So the plan is to use an ebus adapter which takes the SL from the HW zone valve and adjusts the flow temperature on the boiler to MAX, reverting back to the set flow temperature once the HW zone valve closes.
Has anyone done something similar? And any pros / cons compared to using the V65 and the supplied NTC?
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