removing heat exchanger on boiler mate 2

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removing heat exchanger on boiler mate 2

Post  malcolm4567 on Sun Sep 08, 2013 8:41 am

How difficult is it to remove the heat exchanger in a boilemate 2?
I want to descale it soon, I've also discovered the drain valve at the bottom of the boilermate 2 doesn't drain the system, and neither does the one located above the potterton boiler! There is a drain on the last radiator so I pressure I can use that to drain the whole system.
Any advice would be appreciated.

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Re: removing heat exchanger on boiler mate 2

Post  Mario.S on Sun Sep 08, 2013 1:28 pm

malcolm4567 wrote:How difficult is it to remove the heat exchanger in a boilemate 2?
I want to descale it soon, I've also discovered the drain valve at the bottom of the boilermate 2 doesn't drain the system, and neither does the one located above the potterton boiler! There is a drain on the last radiator so I pressure I can use that to drain the whole system.
Any advice would be appreciated.
First, in the Boilermate 2, there is no heat exchanger, only a massive ( called torrent coil) cupper coil for the hot water and ( depending if this is the OV or SP version, yours sounds like the SP) two exchange coils, one for your radiator heat and the other as primary exchanger from your Gas boiler heat. Both coils ( primary and secondary / from the Boiler and from the heating can sludge up and need cleansed out every 3 to 5 years, if you talking about lime scale, you mean the torrent coil. This coil you cannot take out, you have to disconnect on both ends and use a chemical decaling equipment .
hope this helps
Mario at Mario's Boiler Service

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flushing boilermate II clean

Post  malcolm4567 on Mon Sep 09, 2013 10:06 am

Thanks for your reply, I've put sentinel x400 in the F E tank and I'll circulate it for a couple of weeks before draining the system and flushing before adding sentinel x100 inhibitor. Is the water in the boilermate II separate from the water in the radiators. I know there are two pumps, one to the boiler and one to the radiators.
Malcolm

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Re: removing heat exchanger on boiler mate 2

Post  Mario.S on Mon Sep 09, 2013 6:05 pm

malcolm4567 wrote:Thanks for your reply, I've put sentinel x400 in the F E tank and I'll circulate it for a couple of weeks before draining the system and flushing before adding sentinel x100 inhibitor. Is the water in the boilermate II separate from the water in the radiators. I know there are two pumps, one to the boiler and one to the radiators.
Malcolm
No the water in the BM2 cylinder is the water also running in your radiators , course the BM2 system is open vented.
regards mario

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Re: removing heat exchanger on boiler mate 2

Post  Mike the Boilerman on Tue Sep 10, 2013 2:57 am

malcolm4567 wrote:How difficult is it to remove the heat exchanger in a boilemate 2?
I want to descale it soon, I've also discovered the drain valve at the bottom of the boilermate 2 doesn't drain the system, and neither does the one located above the potterton boiler! There is a drain on the last radiator so I pressure I can use that to drain the whole system.
Any advice would be appreciated.
Why do you want to 'descale' it? What is the fault you need to fix? I'm wondering if you are barking up the wrong tree.

As Mario says, the water in the store IS the radiator water. If you have poor hot water performance then descaling the inside of the long DHW tube inside the store may well be the fix, or a new blender valve. The rads and the store rarely give trouble or need to be treated with chemicals in my experience

Mike

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Re: removing heat exchanger on boiler mate 2

Post  malcolm4567 on Wed Oct 02, 2013 2:03 pm

The problem I have with my boiler mate 2, is that after the heating has been used or after I've used a lot of hot water the system seems to take ages to heat up again.  The green light comes on at the boiler mate, the potterton boiler fires up for a few seconds and then cuts out and the green light on the boiler flashes.  Both pipes at the boiler are hot and the pumps are working. Both circuit boards on the boiler mate 2 were changed recently to stop the relay clicking noises.

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