MacMan34
New Member
Hey all,
I am new to the world of tankless water heaters and am super excited by my new unit.
Please forgive me if this is an obvious question or anything, I have been trying to search here and elsewhere since I decided to go with the Navien 240A.
I see from the instructions that to turn on intelligent preheating you toggle the first 2 switches inside the control panel. From my reading this turns on both internal and external re-circulation.
Is there any benefit to doing this without the external line? or does turning this on without the line possibly damage anything? I like the idea of there being readily available hot water in the internal re-circulation system when it believes demand will call for it (the wife gets up and showers at 5am, and I do about 6:30 five days a week), but am not at the moment at a place to install an external line or a Grundfos valve. Maybe one day....
Any insight on this, along with any other advice you can give as I venture into the tankless water heater world, would be very much appreciated.
Thanks so much and have a great day.
j
I am new to the world of tankless water heaters and am super excited by my new unit.
Please forgive me if this is an obvious question or anything, I have been trying to search here and elsewhere since I decided to go with the Navien 240A.
I see from the instructions that to turn on intelligent preheating you toggle the first 2 switches inside the control panel. From my reading this turns on both internal and external re-circulation.
Is there any benefit to doing this without the external line? or does turning this on without the line possibly damage anything? I like the idea of there being readily available hot water in the internal re-circulation system when it believes demand will call for it (the wife gets up and showers at 5am, and I do about 6:30 five days a week), but am not at the moment at a place to install an external line or a Grundfos valve. Maybe one day....
Any insight on this, along with any other advice you can give as I venture into the tankless water heater world, would be very much appreciated.
Thanks so much and have a great day.
j