Really could use some advice oil boiler with hot water coil troubleshooting


Old 11-01-15, 07:08 PM
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Really could use some advice oil boiler with hot water coil troubleshooting

I really need some advice on what to do
with my oil boiler with internal hot water coil.
I have a house that is located on Long Island Ny that has an old American Standard Acroliner oil boiler with hot water coil inside.

Here is the breakdown of what has transpired since last year.

Boiler is old but has always run strong hot water coil fed into a 80 gallon true acuabooster tank. I lived in the house for about 5 years and rented it out 4 years ago. When me my wife and 2 kids lived there we always had good hot water there was never a ton of pressure but hot water was fine.

Last year I was away and old acuabooster split open so tenants had a friend come who assured me that he would be installing a acuabooster or true storage tank and not a hot water heater being only used for storage. He installed a electric hot water heater as storage tank and disappeared.

Tenants said that hot water was never as long or as hot after it was installed. Last week they were complaining that hot water was running out after 1 shower. I went to house and ran shower boiling hot for 30 min at the same time I ran kitchen sink witch was also boiling hot.

I left and called and assumed that they were describing it wrong and must have been talking about the water pressure because when 2 faucets ran at same time pressure dropped in 1 of them.
I also made sure the boiler was kicking on when I had the water running and it was.
I get a call an hour after I left that there is no hot water And boiler was not comming on at all. I really thought they were messing with me and just wanted a new boiler.

Had oil company come in next day that I have used before and explained exactly what was going on an my only issue was with hot water running out. I assumed it was the coil. The tech said the chamber was deterating and that was causing all the problems with hot water. The chamber has been in that same exact condition for over 5 years and it was never a problem. I explained that to him and said could it be the coil and or the storage tank and he said no chamber was the cause but I should maybe replace the coil after just because it is old. Not the answer I felt comfortable with.

Next day had someone else come that agreed the chamber would not affect it. He found the old stat relay was shot and it was making the boiler come on and off at random times. He said it was dirty inside boiler and cleaning it and replacing the relay with newer cat eye style would make boiler run fine and there was nothing wrong with boiler.
This made sense because day before I had hot water when I was there and then I guess the boiler kept turning off. He seemed very knowledgeable he did a really good cleaning and replaced the sensor. He said boiler was running great but now it was midnight and couldn't stay to wait for storage tank to fill and warm up to check heat. Next morning tenant called and said hot water still was not good enough. He called me first thing the next morning to check hot water and I took him he said he had drawn diagram of how hot water heater ws plumbed and the way it was it would never keep hot water.

So he is back again I told him I wanted the coil checked he cut lines and flushed and it was not clogged and should be working fine.
I suggested not using the coil and just connecting the hot water heater as a hot water heater and be done so I didn't have any more chance of it not working.
He insisted on just bypassing tank and running water from coil directly to hot water lines.

5 min of hot water and still nouthing. I asked if aquastat was checked and working and if mixing valve was working correctly and he said everything was working fine and tested I also asked about shower heads and they are all 2.5 coil rated at 5gpm

No he says coil must not be working correctly and be corroded around outside of tubing. I did my research and now I can still get a replacement coil. He said it was a waste of money and they are impossible to screw out and not worth doing.

So I spent a bunch of money for nouthing now I need to figure out what to do

1st. Stop using tankless coil in the boiler and install a on demand electric hot water heater

I am no longer renting the apartment and need a price to have system disconnected and installed 100 feet away.
Every thing on the boiler is brand new including burner

2nd. Wire and connect the hot water heater and not use the coil
I could really use a diagram of the correct way to wire and plumb a electric hot water heater to only be used as a storage tank fed from boiler coil

3rd. Shoot myself lol

4th. Have someone else try and troubleshoot the cause

I have some cash and

I am sorry for this long explanation it just has been a long week with a lot of time and money wasted.
I appreciate you taking the time
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Old 11-02-15, 04:54 AM
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2nd. I suggested not using the coil and just connecting the hot water heater as a hot water heater and be done so I didn't have any more chance of it not working.
That sounds like the best answer to me. Connect the cold water feed, to the hot water tank intake & the outgoing pipe, to feed the house.
Old 11-02-15, 07:35 AM
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hot water

On Heating there are some posts from "ice sailor" that detail how to hook up the hot water heater as a hot water storage tank off the boiler coil. His plan uses a circulator controlled by one of the electric heater thermostats. Sounds like it works for him. Good luck (the shoot yourself option doesn't sound too good)
Old 11-02-15, 08:05 AM
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Thanks for the info gentleman iIlooked for over an hour yesterday for the diagrams from icesailer I find the posts buy there are no drawings
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