OMNI HEATER AND CHILLER CONTROL

Oct 18, 2022
10
Orlando
Pool Size
5250
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
Hi pool friends,

We are three years into our pool and have a Hayward Heat Pump HP31005T (HP) and OMNI PL automation. The HP can both Cool and Heat. The HP has an auto feature wherein if I so desired I could keep the pool at or about a set target, and the HP would do as needed (heat or cool) to get there. It is currently wired and configured to OMNI as a heater. So I can control it from my app as a heater. In reality, as far as the HP is concerned, OMNI is just an on/off switch. Now the water is heating up and the only way to cool the water is by setting the water temperature target on OMNI high (which just turns the HP on) and have the HP set for cool mode. OMNI will never shut the HP off in this mode, but the HP will shut itself off when it gets to the desired temperature. OMNI will reflect that it thinks it is still trying to heat the pool. There is just one remote wire that goes from HO to OMNI, because all OMNI is doing is completing the low voltage circuit necessary to activate the HP. Once the circuit is complete, the HP then used its control to do its thing.

My theory is that if I had two configurations with Low Voltage Relay (LVR) 1 being configured to Heat and LVR 2 to Cool I could do both properly from OMNI (I realize that I would need to have HP in the right mode which would be a manual setting.

Question - Can I splice the single remote wire from the HP (again it’s low voltage wire carrying low voltage power) to both LVR 1 and LVR 2 and configure as described above? In essence LVR 1 and LVR 2 would be “connected” by the spliced wires, so I am not sure if this would create any sort of short in the OMNI system. I am not certain how the relays work, but my thought is that they are simply circuits. So I can’t think of what the fault would be. I envision that this would enable OMNI to call for Heat or Cool (or I could use OMNI auto) to call for HP as well.

Option 2 would be to make the HP a remote unit not characterized as a heater or chiller, just a timed on off option all run by the HP, but then I lose some of the smart functionality of OMNI.

Alternative solutions - I am open to any better ideas.
 
I have talked to my Hayward rep about the same exact thing. Depending on your generation of hp31005t if you have the newer one it is now equipped with an RS com connection on the bottom right next to the remote 2 wire connection. You can use that to have full functionality through your Omni. If you do you can reprogram your Omni heat pump setting. There should be a setting that says smart heater and it should have an HUA ( Hayward unique address). If not I have not been able to figure out a solution.
 
I have talked to my Hayward rep about the same exact thing. Depending on your generation of hp31005t if you have the newer one it is now equipped with an RS com connection on the bottom right next to the remote 2 wire connection. You can use that to have full functionality through your Omni. If you do you can reprogram your Omni heat pump setting. There should be a setting that says smart heater and it should have an HUA ( Hayward unique address). If not I have not been able to figure out a solution.
Thanks. I have the first generation of this unit, circa summer 2021.