Does anyone know the logic behind how Navien controls their internal recirculation pump when it is circulating with an external loop?
This would be with the second dip switch in the "On" position and the water valve in the "external loop" position.
Here is what I want to do:
Turn off the recirculation when the house is not occupied, in order to save even more energy.
I can figure out occupied or not from a home automation or alarm system.
How?
One option is to put a relay/contactor between the Navien and the internal pump, so that that pump can only get power when the house is occupied. But would the Navien be calling for the pump to run and then not see results and get confused?
I am aware of the PZZZ-00046 "Hotbutton Switch" , but am assuming that if I used it to specify if I am occupied or unoccupied then it might end up running recirculation all the time when occupied and therefore use more energy than the default recirculation logic. I guess I could add more logic so that when occupied it only sends a periodic manual circulation call, but that is more complicated.
Anyone have the inside scoop?
Thanks!
This would be with the second dip switch in the "On" position and the water valve in the "external loop" position.
Here is what I want to do:
Turn off the recirculation when the house is not occupied, in order to save even more energy.
I can figure out occupied or not from a home automation or alarm system.
How?
One option is to put a relay/contactor between the Navien and the internal pump, so that that pump can only get power when the house is occupied. But would the Navien be calling for the pump to run and then not see results and get confused?
I am aware of the PZZZ-00046 "Hotbutton Switch" , but am assuming that if I used it to specify if I am occupied or unoccupied then it might end up running recirculation all the time when occupied and therefore use more energy than the default recirculation logic. I guess I could add more logic so that when occupied it only sends a periodic manual circulation call, but that is more complicated.
Anyone have the inside scoop?
Thanks!