I have a system that needs more than 12 zones, so I have two Wifi Controllers and double bound the BDR91 than controls the heating side of the system.
My question is how does this function with respect to TPI?
Does the controller drive TPI and send on/off signals to the BDR91? Does the BDR91 remember each controller instruction and only turn off when both controllers are sending off? If this is the case I cannot see how a TPI system could operate. Wouldn't the controllers be fighting each other?
Or does the BDR91 control TPI by receiving demand levels from each controller and combining them?
Thanks
Toby
My question is how does this function with respect to TPI?
Does the controller drive TPI and send on/off signals to the BDR91? Does the BDR91 remember each controller instruction and only turn off when both controllers are sending off? If this is the case I cannot see how a TPI system could operate. Wouldn't the controllers be fighting each other?
Or does the BDR91 control TPI by receiving demand levels from each controller and combining them?
Thanks
Toby
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