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Hello, I have an oil fired heat and hot water problem. I have a new boch water heater with a new beckett af burner with solid state ign etc. It runs fine with no problems. Nest to it is a Weil McLean Boiler also with a Becket AFG burner .75 nozzle and older transformer etc. They are both fed from the oil tank thru a 3/8 inch line and single filter with a tee on the filtered side. When both burners call for fire, the older beckett on the boiler shuts down on safety. It runs fine by itself and has a great flame etc, Electrodes and nozzle all new and adjusted etc. What can you suggest to solve this problem. Would a new pump help? Thank you Paul, PS we're due to get zero degrees here and have a new baby in the house.

Submitted: 312 days and 7 hours ago.

Category: HVAC

Value: $15

Status: AWAITING CUSTOMER ACTION

Posted by Robert 312 days and 7 hours ago.

Info Request

Hi Paul, I'm Bob. Do you know what the firing rate is of the new water heater? If I know the BTU input I can figure it out.

Posted by Rick Mather 312 days and 6 hours ago.

Answer

Have check valves install on each seperate oil line one is stealing oil from the other

Posted by Robert 312 days and 6 hours ago.

Info Request

Rick is on the money here. You also need to replace your oil filter if it hasn't been done plus, Where is your tank located from the furnace?

312 days and 6 hours ago.

Reply

Hi Bob thanks for the reply
I have the Manual here and it says the firing rate is .40- 3.00 gph.
I could check if you need me to what nozzle is in it now but I believe its a .75 as well
Thank you
Paul The oil tank is only about ten feet away from the burners and is also in the basement so its heated as well. I will check the filter again, A tech was here this summer to do a tune up. I dont think he did a very good job. Canyou explain the check valve please and where it would be installed etc.
Thank you

Posted by Robert 312 days and 6 hours ago.

Answer

I would just replace the filter regardless. They make inline check valves for fuel oil systems that connect (direction sensitive) in the oil line before each pump. However is there is a restriction before the burners (like the oil filter or the tank valve is not open all the way)They may not help. Your new pump is overpowering the old one so first, make sure there are no kinks, flat spots or other restrictions like that. Replace the oil filter. Then if problem continues you can try the valves. I've installed them myself and help a lot providing flow restrictions have been ruled out.

Posted by Robert 312 days and 6 hours ago.

Answer

Paul I'll be checking in tomorrow. Let me know what you find! Thanks and good night.

312 days and 6 hours ago.

Reply

Thanks Bob Ill change the filter now. Also, Im going to go over the supply lines and replace if necessary. Ive got a new suntec pump as well. I may as well put it in. Thanks for your help. Ive got a feeling that we havent seen the last of it yet.
Oh, by the way the nozzle in the new burner is a 1.00 and the pump psi is 100
Thank you for your help, Ill accept after this,
P

Posted by Rick Mather 311 days and 22 hours ago.

Answer

Glad your on the right track

Posted by Robert 311 days and 20 hours ago.

Answer

Do you need that much input for you water heater? Is it a tankless unit?

311 days and 8 hours ago.

Reply

Its a Boch 32 Gallon with beckett AF burner

Posted by Robert 311 days and 8 hours ago.

Answer

Reduce the nozzle size. You are firing it at nearly 140,000 BTU's. I would try it at a .60gph. with the recommended spray angle and cone type. You should find that in your paperwork. If the unit does not recover fast enough for you increase it to a .75 gph

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Expert:	Robert
Pos. Feedback:	100.0 %
Answered:	1/16/2009

HVACR Educator

Licensed Mechanical Contractor, 30 years experience, 20 years teaching experience

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Have your own HVAC question?

Question

Info Request

Hi Paul, I'm Bob. Do you know what the firing rate is of the new water heater? If I know the BTU input I can figure it out.

Answer

Have check valves install on each seperate oil line one is stealing oil from the other

Info Request

Rick is on the money here. You also need to replace your oil filter if it hasn't been done plus, Where is your tank located from the furnace?

Reply

Answer

Answer

Paul I'll be checking in tomorrow. Let me know what you find! Thanks and good night.

Reply

Answer

Glad your on the right track

Answer

Do you need that much input for you water heater? Is it a tankless unit?

Reply

Its a Boch 32 Gallon with beckett AF burner

Answer

Reduce the nozzle size. You are firing it at nearly 140,000 BTU's. I would try it at a .60gph. with the recommended spray angle and cone type. You should find that in your paperwork. If the unit does not recover fast enough for you increase it to a .75 gph

Accepted Answer

If I have helped you, please click ACCEPT. I will still be here for additional help. If you feel that positive feedback is appropriate that would be very much appreciated also. Thank you.

Related HVAC Questions

If I have helped you, please click ACCEPT. I will still be here for additional help. If you feel that positive feedback is appropriate that would be very much appreciated also.

Thank you.