On my ES-50X, TB11 is “Special Applications DC Power Outputs (24VDC)“. First of all, why is there a pair of terminals labeled RTN+ & RTN- in addition to the plain + & -? I connected my ANN-100 to the RTN+ & RTN- and it worked fine despite the “RTN“ prefix. The plain + terminal is connected to the battery terminal for the battery hack and the plain - terminal is empty. I’ve been looking into getting an MMF-302 ZIF Module. The smoke detector(s) that I will connect to it will require filtered 24VDC as well. If TB11 is fully occupied, how can I power the smokes on the ZIF? I’m assuming it would be janky and unsafe to double-up connections on the + & - terminals (i.e. 2 positive wires in the plain + terminal and 1 wire in the plain - terminal).
According to section 2.2.3 of the manual, the RTN ports are for the Class A home run wiring, if you are using that (see the bottom of page 81 for programming). It should be possible to source power from there the same way power can be sourced from the normal terminals, but it might lead to unwanted troubles if the system thinks there is an open Class A loop.
I’m not sure what “battery hack” you are referring to. However, one important consideration is that the annunciator will need non-resettable power, while the ZIF will need resettable power. However, the entire auxiliary power circuit can only be set to one of the two modes (see the bottom of page 81), so it will be necessary to connect the annunciator and ZIF on the same non-resettable special application circuit and insert an addressable relay module (programmed as the “Resettable Power” type) before the ZIF.
Especially on a hobby system that doesn’t need to follow any rules, does it really matter if the annunciator is on resettable power? In fact, based on his videos, I think it is actually hooked up to resettable power because the annunciator appears to loose power and go blank when he presses the reset button. It doesn’t seem to be causing any issues. If that’s the case, he can just hook the detectors up to the same power that the annunciator is hooked up to.
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Yeah, now that you mention it, I might have the annunciator hooked up to resettable power. But what about the whole doubling-up connections on the terminal block? Is that okay to do?
If the connection is not good, you can simply use wire nuts/Wagos and pigtail wires.
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