Does anyone make a small buffer tank that I can install on the hot water outlet of a Rinnai RL75I?
I have a recirculation line with a grundfos pump. I use a repeat cycle timer to run the pump on a schedule similar to the heater program. The system is working great except for the cold water sandwich if you happen to be taking a shower at the end of the cycle. I want to install a buffer tank to mitigate the temperature drop. Haven't been able to find one except for a small electric water heater. Anyone know of a small buffer tank without electric?
I have a recirculation line with a grundfos pump. I use a repeat cycle timer to run the pump on a schedule similar to the heater program. The system is working great except for the cold water sandwich if you happen to be taking a shower at the end of the cycle. I want to install a buffer tank to mitigate the temperature drop. Haven't been able to find one except for a small electric water heater. Anyone know of a small buffer tank without electric?