AquaHot plumbing issue

[Pusherpilot]

I recently went thru another leak problem with my AquaHot unit. These problems have been mostly related to the way Monaco installed them but not all of them. The most recent is a Monaco related problem. I have posted this on the Hydronic Heat forum and recieved really good assistance on-line from Roger that made it possible for me to repair it myself.

I'm now posting here to alert other Monaco owners with AquaHot or HydroHot units to take a look at how their units are plumbed.

The leak appeared at the output of hot water to the various faucets in the coach from the AH unit. The fitting is a PEX type and was leaking at a rather brisk drip. I shut off the water to the coach and then looked for a way to isolate the cold supply to the unit so we could use cold water in the rest of the outlets. There is no way to do this in our coach. While I was digging around in that area I noticed that the water supply to the AH unit does not pass thru the filters! The input to the AH is straight off the city water supply pipe. This means that the water going thru the AH for the last 7 yrs is the unfiltered variety.
I've asked on the other forum if there is any reason why the thing is plumbed without a shutoff and taken directly off the raw input water instead of from the filters. There's been no explaination there but it's a low traffic forum specific to Hydronic heating and not how Monaco plumbs their coaches!!.
Anybody have any insights on this?
Ron

[moisheh]

Our 08 Dynasty has a "monoblock" manifold for all the water lines. Just turn a plastic petcock and you can isolate any part of the system. Why would you need to filter the hot water? Unless you plan on drinking hot water.

[Pusherpilot]

Originally Posted by moisheh

Our 08 Dynasty has a "monoblock" manifold for all the water lines. Just turn a plastic petcock and you can isolate any part of the system. Why would you need to filter the hot water? Unless you plan on drinking hot water.

Ours has the Monobloc also, the problem is my AH isn't fed from it. I wish it were.
Filtering the water going into the AH is the same as using distilled water in your steam iron and coffee pot, it prevents mineral buildup that can clog the heat exchanger, a very expensive item to replace.
Ron

[Dr4Film]

Filtered water will NOT prevent mineral buildup and deposits. it will only remove solid undissolved particles and also remove odors depending on the type of filters used. A RO system will remove almost anything.

A water softener will reduce the amount of mineral deposits however, it's not the same as distilled water that is pure.

Dr4Film ----- Richard.

[moisheh]

dr4film is correct. Many people get confused over ure water, filtered water and distilled water. As for filtering , your stick home woud not have a filter for the hot water heater. I am going to check my monoblock for an AH shutoff.

[moisheh]

Pusherpilot: You are correct. There is noonoblock shut off for the aqua hot, I kooked quickly to see if there was a ball valve in the Aquahot area but saw nothing.