Multi-Unit Controller Kit (One Unit needed for each set of 5 units up to 25 units total)

I have two Rinnai R53i connected together. My intention was to use this klt to be able to adjust the temperature of both with one control and also enable one as default and two as more flow is needed.I could not make it work. I spend a lot of time with Rinnai people and no success. Initially we though the board was defective, Amazon was great and replaced the Kit without any extra cost. The new kit behave the same.In suma, no complains with Amazon only appreciation for their service. My 2 Rinnai are new (was a house that took 9 years to build! and therefore these Rinnai bought few years back have not been used) they work OK, just seems that they are not compatible with this kit despite RInnai assurance that it "should" work.

I was very happy by the information supplied along with such great search potential for this product. I was again amazed by Amazon's ability to deliver. I am very happy with the fact that instead of Amazon eliminating the "little man", they are instead using great ingenuity to include the little man for the sake of the customer satisfaction. This is the opposite of the great Walmart scheme.Mahalo Amazon, I love you! Keep on Truckin!!!

great product for the price and would recommend