Reply to thread

Message

<blockquote data-quote="Terryl" data-source="post: 925717" data-attributes="member: 369937">It could be that the heat exchanger is calcified or rusted up, this could/would cause a higher then normal system pressure.One way to test this is to put gauges on the inputs and outputs of the heat exchanger, if everything is normal through it then they should read the same, if the output pressure is lower then the input, then the heat exchanger is blocked up.Have ever had your water tested for hardness? Or excessive minerals?If the heat exchanger is blocked up and you can remove it, a good soak in vinegar or CLR* can clear it up, you may have to use a small fountain pump to push the solution through the exchanger.In your travels through the system did you see any signs of scale or calcification?I know some around here have problems with too much iron in the water, so about once a year they have the system cleaned.How this is done is the input water supply is bypassed, and the input run to a tank, then pumped through the system back to the tank, a solution of CLR is used to remove the rust and scale, the system is flushed out thoroughly before reconnection if used for domestic hot water.*CLR an off the shelf Calcium, Lime and Rust remover.</blockquote>

[QUOTE="Terryl, post: 925717, member: 369937"] It could be that the heat exchanger is calcified or rusted up, this could/would cause a higher then normal system pressure. One way to test this is to put gauges on the inputs and outputs of the heat exchanger, if everything is normal through it then they should read the same, if the output pressure is lower then the input, then the heat exchanger is blocked up. Have ever had your water tested for hardness? Or excessive minerals? If the heat exchanger is blocked up and you can remove it, a good soak in vinegar or CLR* can clear it up, you may have to use a small fountain pump to push the solution through the exchanger. In your travels through the system did you see any signs of scale or calcification? I know some around here have problems with too much iron in the water, so about once a year they have the system cleaned. How this is done is the input water supply is bypassed, and the input run to a tank, then pumped through the system back to the tank, a solution of CLR is used to remove the rust and scale, the system is flushed out thoroughly before reconnection if used for domestic hot water. *CLR an off the shelf Calcium, Lime and Rust remover. [/QUOTE]

Verification