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to pressurize or not to pressurize your infloor glycol

piperken

New member
our floor heating is an open system not under any pressure just gravity and pumped through the floors with an armstong pump. We are going to put a new bigger BTU boiler in and the contractor wants to pressurize it slightly so its a closed system. The only problem is i still have one bay that has 35 year old steel piping in the floor. To pressurize or not to pressurize. If i do it might spring a leak in that one bay, but it is getting old and probably going to replace soon anyway. any suggestions?
 
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