Hi all
New hear, just got a quick question.
I went to see a customer today who has a problem with their boiler. First start of the day it goes through the normal process but goes to lockout. After opening up the exterior cover, the clear oil pipe has a large slug of air in it. When the lockout is reset, the boiler works fine. Only when the burner cools down for a period of time does the sequence start again. Ive checked the oil tank and they have plenty of oil.
One thing i did notice was after the burner had been running for a while and it was turned off, the oil started to disapear through the valve which i now know is a combined fire and non return valve. As im new to oil boilers, it was the first time i had come across this type, and i decided to fit a normal non return valve in addition to the fire/non return valve. The oil is not disapearing any more, however when the burner is running, it seems to pull a lot of air through with it.
Beacuse of this i spoke to HRM directly and they said it could be a loose joint allowing the air in, or indeed the pump (the pump is an older type delta pump)
As time was getting on this afternoon and not wanting to get a problem later in the day, i decided to come back next week to change the fire and non return valve. Customer happy with this as boiler is working allbeit after the first start up.
My question to you is what do you think the problem could be? Im hoping by changing the fire and non return valve that the oil wont dissapear and will lessen the air coming thorugh the oil line.
I have been told by HRM that it could possibly be the pump thats letting air in as well. As im new to this and have yet to change a pump, could someone give me some guidance to chaning the pump? As the delta pumps arent available, it will be a direct replacement danfoss pump.
A huge learning curve for me, certantly nothing like this came up on the oftec course!!
Any help much appreciated
Cheers
Andy
New hear, just got a quick question.
I went to see a customer today who has a problem with their boiler. First start of the day it goes through the normal process but goes to lockout. After opening up the exterior cover, the clear oil pipe has a large slug of air in it. When the lockout is reset, the boiler works fine. Only when the burner cools down for a period of time does the sequence start again. Ive checked the oil tank and they have plenty of oil.
One thing i did notice was after the burner had been running for a while and it was turned off, the oil started to disapear through the valve which i now know is a combined fire and non return valve. As im new to oil boilers, it was the first time i had come across this type, and i decided to fit a normal non return valve in addition to the fire/non return valve. The oil is not disapearing any more, however when the burner is running, it seems to pull a lot of air through with it.
Beacuse of this i spoke to HRM directly and they said it could be a loose joint allowing the air in, or indeed the pump (the pump is an older type delta pump)
As time was getting on this afternoon and not wanting to get a problem later in the day, i decided to come back next week to change the fire and non return valve. Customer happy with this as boiler is working allbeit after the first start up.
My question to you is what do you think the problem could be? Im hoping by changing the fire and non return valve that the oil wont dissapear and will lessen the air coming thorugh the oil line.
I have been told by HRM that it could possibly be the pump thats letting air in as well. As im new to this and have yet to change a pump, could someone give me some guidance to chaning the pump? As the delta pumps arent available, it will be a direct replacement danfoss pump.
A huge learning curve for me, certantly nothing like this came up on the oftec course!!
Any help much appreciated
Cheers
Andy