Quote:
Originally Posted by Xringer
But, using the heating elements might be required if you have company and a few more folks need to take showers.. 
Seems like you could set the A7 to 125F and set the heaters to 110F..
When the A7 wasn't keeping up with demand, you pay extra.. |
My propane fired DHW is also used, with internal HX, for in-floor radiant system. Therefore my plan is to use an outside thermostat to control the gas fired system. Fire the propane system when outside temp is below set point and in-floor system is calling for heat. This in addition to your idea of setting the A7 to 125F and set the heater to 110F.