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    Vaillant VRC400 and VRT230 for 2 zone CH system

    Anybody had success using a VRC400 and a VRT230 on the same heating system? I have two separate heating zones (one upstairs/one downstairs) plus the DHW. I am thinking that the VRC400 can control the downstairs Heating and DHW, with the VRT230 controlling the upstairs heating but not sure...
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