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I recently had a new heat pump installed in place of an old A/C system. It's a multi-stage; Amana ASZ140361
Link to product description
Side note.. this IS a multi-stage unit, right!? That brochure is making me wonder.
It's paired with a Goodman variable speed air handler AVPTC313714.
Link to Product description
Lastly, I bought a Nest thermostat to control it all with.
First day of operation, it was clear the variable blower speed was not working. Pulled the cover of the Nest, and saw this:
Well there aren't enough wires there for variable speed operation to work. The installer reused my old thermostat wire. So I just ran a new one now and went to wire it into the air handler.
The Y1 and Y2 wires (black and yellow, respectively) were wire-nutted together with the Y lead in my old 5-strand thermostat wire and the Yellow lead in the control wire down to the heat pump. For the new 18/7 wire, I wired Y1 to Yellow, and Y2 to Brown. For the control wire to the heat pump, I referenced a diagram I found here, which says that, yes, I should have a first and second stage (Y1,Y2) connected to the heat pump.
Then I went outside and pulled the cover off of the unit and noticed that there are two poles, both labeled "Y", and only one has a lead to the control wire going up to the air handler. But the schematic on the inside cover seems to indicate these two are combined?
My plan is to run a lead from that second Y to the brown lead in the control wire, which will be wire-nutted to the brown lead in the air handler going to both Y2 and the thermostat.
So, the two questions are:
1. Is this a multistage heatpump, because, dang it, that's what I bought.
2. Is my wiring plan correct?
Thanks!
Link to product description
Side note.. this IS a multi-stage unit, right!? That brochure is making me wonder.
It's paired with a Goodman variable speed air handler AVPTC313714.
Link to Product description
Lastly, I bought a Nest thermostat to control it all with.
First day of operation, it was clear the variable blower speed was not working. Pulled the cover of the Nest, and saw this:

Well there aren't enough wires there for variable speed operation to work. The installer reused my old thermostat wire. So I just ran a new one now and went to wire it into the air handler.

The Y1 and Y2 wires (black and yellow, respectively) were wire-nutted together with the Y lead in my old 5-strand thermostat wire and the Yellow lead in the control wire down to the heat pump. For the new 18/7 wire, I wired Y1 to Yellow, and Y2 to Brown. For the control wire to the heat pump, I referenced a diagram I found here, which says that, yes, I should have a first and second stage (Y1,Y2) connected to the heat pump.
Then I went outside and pulled the cover off of the unit and noticed that there are two poles, both labeled "Y", and only one has a lead to the control wire going up to the air handler. But the schematic on the inside cover seems to indicate these two are combined?

My plan is to run a lead from that second Y to the brown lead in the control wire, which will be wire-nutted to the brown lead in the air handler going to both Y2 and the thermostat.
So, the two questions are:
1. Is this a multistage heatpump, because, dang it, that's what I bought.
2. Is my wiring plan correct?
Thanks!