Another follow up to this post.
The two Zen 51's are working great to control the two functions of the dumb double paddle switch
- Standby/On
- Hi/Low
The challenge is the switch positions. The automation rules are fairly good at turning the ERV on and off, but then the buttons on the dumb single gang dual switch don't match the positions I've trained my household on. While it seems intuitive to me that if the ERV is totally silent, it is off, no matter where the switch is, others in my household think if the switch position is where they were trained for the unit to be on, "it is just operating very quietly today."
In addition to the retraining of my household, which is under way, I'm aware of three other potential solutions but would appreciate some feedback
- Totally automate this so switches are never used so the physical position of the switch does not matter. Working on this (see below) but not sure it is attainable.
- Replace the single gang regular dual switch (maintained contact?) with a single gang momentary dual switch. After much googling, I've found a Legrand Pass & Seymour TM811-DTMOW that might work - just not sure because the spec sheet calls is a "Double Throw Momentary Contact." Doesn't double throw mean that if one is on, the other is off? So every time I put the speed on high, the standby/on would immediately go to standby? Or am I reading too much into this?
Spec Grade Decorator Momentary Contact Switch
If this switch is not correct, does anyone have a link to the existence of a Code Compliant single gang, double switch where both are momentary? - Both 1 and 2 above, which would be ideal, but might be overkill.
Two more pieces of info:
Until I can obtain plug in presence sensors, I'm not sure I can totally automate this. However, the ERV will become more automated when my Third Reality plug in Motion sensor arrives - the one @rlithgow1 suggested in this thread:
How are folks solving for 'Entire Family Awake' scenarios - #5 by rlithgow1)
With the two Zen51's, the box is tight. Not sure if a momentary switch would be deeper and thus take up more space than the standard big box store single gang dual paddle in there now. To make it fit, I could remove the Zen 51 controlling the Hi/Low fans speed which would free up some space in the box, but it turns out to be somewhat useful.
