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[Tree_Killer]

Oil boiler pics

One house return on bottom left side. Another house return on bottom left rear.  OWB return on bottom right rear

One supply going out of boiler with T from OWB

Both OWB lines have manual valves


PS- He has oil boiler's thermostat connected by a phone jack. I was told to unplug that when running OWB to prevent boiler from kicking on



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[slimjim]

Tree Killer, look at the circ on the left side of your oil boiler is that the wood boiler loop, if so which way is it flowing, there will be an arrow on the side of the circ or the circ always pumps from the lump on the back to the skinny side, as far as unplugging the phone jack, all it does is break connection on the TT terminals at the burner, not a bad way to do it but it is not automatic and can be made automatic with the addition of another in line aquastat as I keep mentioning, the benefit of doing this is that if you ever have to leave in an emergency or just want to be gone for a few days the oil boiler will kick back on and maintain the system at it's normal operating temp automatically when the wood boiler runs out of fuel.

[kayakerski]

Yup, As soon as funds allow I am getting the aquastat you mentioned Slimjim. Last night I had L=as low as it can go and H=120 and the burner still kicked on. In addition I guess I should have my system purged first since I need to replace a pressure relief valve anyway . I did notice I have 2 cold radiators(my radiators have bleeders on them). Is the relief valve and purging something any mechanically inclined person can handle?

Of course this will all need to wait a bit since while I was down there last night I found a cracked cast iron sewer line..... I love old houses!

[kayakerski]

I have a related question that was brought up in this thread, as far as hook up.   I had no part in installing my owb and connections to the oil boiler, and I am still trying to figure everything out. I am getting ready to light up for my second season...other then a few mistakes first season went ok.

My OWB is hooked directly into the oil boiler. It appears though, they at one time had it hooked via a exchange plate...since there is one mounted to the wall 6' from boiler.  I dont mind the direct hook up, but I want to make sure it is installed properly

Unfortunately I cant remember which was hot temp gauge from running it last year. So I am assuming which pipe is which. I just find it weird the one pipe (assuming hot from OWB) never really enters the boiler. It appears to me the should have piped it into the other connection on top of the boiler.

Ive never seen a tee hook up like that for the supply..Anyway of posting pics of the whole boiler itself?...Im directly hooked up as well..Hot water should be the top inlet and cold/return to owb, the bottom..

My owb supply goes into the bottom and returns from the top. I've heard people support each way. Why bring the hot water in the top Matty?

[Tree_Killer]

but it is not automatic and can be made automatic with the addition of another in line aquastat as I keep mentioning, the benefit of doing this is that if you ever have to leave in an emergency or just want to be gone for a few days the oil boiler will kick back on and maintain the system at it's normal operating temp automatically when the wood boiler runs out of fuel.

Can you post a pic of this setup/connection?

[MattyNH]

I have a related question that was brought up in this thread, as far as hook up.   I had no part in installing my owb and connections to the oil boiler, and I am still trying to figure everything out. I am getting ready to light up for my second season...other then a few mistakes first season went ok.

My OWB is hooked directly into the oil boiler. It appears though, they at one time had it hooked via a exchange plate...since there is one mounted to the wall 6' from boiler.  I dont mind the direct hook up, but I want to make sure it is installed properly

Unfortunately I cant remember which was hot temp gauge from running it last year. So I am assuming which pipe is which. I just find it weird the one pipe (assuming hot from OWB) never really enters the boiler. It appears to me the should have piped it into the other connection on top of the boiler.

Ive never seen a tee hook up like that for the supply..Anyway of posting pics of the whole boiler itself?...Im directly hooked up as well..Hot water should be the top inlet and cold/return to owb, the bottom..

My owb supply goes into the bottom and returns from the top. I've heard people support each way. Why bring the hot water in the top Matty?

Well see the pump on the  oil boiler pulls all the cold water in the radiators  to the bottom of the oil boiler, That water is pretty cold if it hasn't run in awhile.. So if you have your hot 180F from the out door boiler pumping  to the bottom.. Your actually cooling your water down before it even goes through your radiators.. If you had the return on the bottom, your outdoor wood boiler pump will pull the cooled water straight out to the OWB.. You bring the hot in the top your oil boiler pump will push that 180F water straight in.. Couple of years ago my buddy had to switch it the way I have it..

[kayakerski]

So it sounds like that could be part of my problem? The owb supply is coming in on the bottom, mixing with the cool water coming out of the radiators. This makes sense because I mainly have this problem when the weather is mild and the water is not circulating through the house as much.

It seems to me that my plan of attack should be to get a break on rise aquastat to put in my owb supply line when I switch the supply to the top. Then purge everything before I replace the oil burner aquastat if needed. I think temp gages on supplyand returns would be nice too.

Question. I understand I need to instal the aquastat in copper or black iron so how much black iron do I need? Does it just get installed in a T a few inches before the owb supply goes into the top of my oil boiler?

Thanks!

Gregg

[slimjim]

No it installs by strapping it onto the outside of the pipe and needs about 6 inces.

[Rockarosa]

KAY, I HAVE OIL FIRED HOT WATER HEAT BUT THE WATER NEVER MIXES, I HAVE A THERMOSTAT FOR EACH  FURNACE. I TURN THE OIL BURNER THERMOSTAT WAY DOWN AND HAVE A RELAY THAT RUNS THE HOT WATER THROUGH MY hx AND THROUGH THE HOUSE. WORKS GREAT.

[slimjim]

KAY I think you are missing the point, AUTOMTATIC and MAINTAINS the set temp using one thermostat.

[MattyNH]

Heres a pic  where my aquastat is located

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[Tree_Killer]

Heres a pic  where my aquastat is located

and the thermostat wire from the aquastat connects too?  the TT of boiler?

[slimjim]

It can be used to interupt either the TT wire on the burner control or the burner power wire AKA B-1, I personally use B-1 in most cases.

[MattyNH]

Heres a pic  where my aquastat is located

and the thermostat wire from the aquastat connects too?  the TT of boiler?

The wire connects to the control box of the oil boiler.. So if my water gets over 200f.. It automatically bypasses the box and turns the upstairs heat on and dumps the heat