Question about Rinnai Digital Remote Water Heater Control Mcc-45-4us
I INSTALLED A RINNAI R75LS TANKLESS WATER HEATER. I NEED TO ADD ZONE CONTROL TO GET THE CIRCULATOR TO RUN SO THE WATER FLOW TRIGGERS THE RINNAI HEATER TO START. I HAVE A SR201 ZONE CONTROL, BUT THE WIRING DIAGRAM SHOWS CONNECTING TO A BOILER CONTROL.
Tankless water heaters for domestic use fire whenever there is water flow. As long as the pump flow rate exceeds the minimum flow rate of the appliance, the heaters hould fire (the return temperature needs to be less than the set temperature as well). Boiler systems will typically require a thermostatic signal (call for heat) and water flow before they will fire. Tankless heaters are designed for residential use and only require pump flow to fire.
Posted on Aug 18, 2009
Thats because the rinnai does not have a set up for a circulating pump it would make the unit run all the time,, they are not designed to work that way,, you will have to just wait for the hot water to get to the faucet just like before,,don't let any one tell you there is a way once the water flows it turn on the tankless so it would never shut off, you could get on that goes on a timer on say the farthest fauset away from the unit and set the timer to come on like 2 min before you are ready to use the water in that bathroom in the morning or at night other then that there is nothing else you can do
Posted on Jun 29, 2009
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Posted on Jan 02, 2017
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