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Topic: Blowing out water system (Read 978 times) previous topic - next topic

Re: Blowing out water system

Reply #20 –
Quote from: gracerace –
A by pass kit can be installed below the W/H. You would have to take the water heater out to do it.
Chris

Thank you Chris, I replaced it this year so it would be no problem getting it out.  I need to remove it again anyway, as I have a unknown from where engine coolant leak when the eng coolant valve is on.

For me the issue will be finding a shallow fitting to make the ninety, take the heat, and still be able to be reached to operate.

Without removing the water heater, could I just put a short loop connecting the two ports at the top of the monobloc manifold, that would bypass the water heater? 

It seems that would work and be easier to do and access to operate. I would remove the two lines at the top of the monoblock that go to the water heater, leaving the water heater drain open, to allow any water in those two lines to drain.  The hot water heater bypassed, I'd be able to leave the rv antifreeze in the lines, pumped in at the suction side of the water pump.

Re: Blowing out water system

Reply #21 –
Quote from: Jack Lewis –
Thank you Chris, I replaced it this year so it would be no problem getting it out.  I need to remove it again anyway, as I have a unknown from where engine coolant leak when the eng coolant valve is on.

For me the issue will be finding a shallow fitting to make the ninety, take the heat, and still be able to be reached to operate.

Without removing the water heater, could I just put a short loop connecting the two ports at the top of the monobloc manifold, that would bypass the water heater? 

It seems that would work and be easier to do and access to operate. I would remove the two lines at the top of the monoblock that go to the water heater, leaving the water heater drain open, to allow any water in those two lines to drain.  The hot water heater bypassed, I'd be able to leave the rv antifreeze in the lines, pumped in at the suction side of the water pump.

Yes, that should work. Or just install the by pass in the lines below the water heater

Re: Blowing out water system

Reply #22 –
The compressor you use must be an "oil less" compressor, an oil filled compressor has the potential to contaminate the water lines with a trace amount of oil.
Don't know if this is true but since been told it years ago I have stuck to it.

Re: Blowing out water system

Reply #23 –
Quote from: Irish –
The compressor you use must be an "oil less" compressor, an oil filled compressor has the potential to contaminate the water lines with a trace amount of oil.
Don't know if this is true but since been told it years ago I have stuck to it.
I would say it is definitely possible to get trace oil from an oil filled compressor.  When draining the water from an oil filled compressor, it always contains oil residue too.  If painting using an oil filled compressor, you must use an oil water separator to prevent contamination, so I think you have a valid point.