Mike Lamb Posted October 23, 2015 Report Posted October 23, 2015 I have a circulating boiler on a quad level home with four zone valves. The pressure gauge read 24 psi. Would this be considered too high for a multilevel heating system? The PRV is rated at 30 psi.
kurt Posted October 24, 2015 Report Posted October 24, 2015 Not necessarily. Not sure why they need the higher pressure, but I find them occasionally in the 22-24 range, usually on multi-level buildings with lots of zones.
mjr6550 Posted October 24, 2015 Report Posted October 24, 2015 If the boiler is in a basement and there are 4 levels above, then the pressure will be close to 20 psi at a minimum. Pressure gauges are also probably not very accurate. As long as it does not creep up towards 30 psi I would not be concerned.
kurt Posted October 24, 2015 Report Posted October 24, 2015 Yeah, I'd expect at least 20, maybe 22. 24 isn't surprising.
Charlie R Posted October 24, 2015 Report Posted October 24, 2015 I just did two different homes this week with the same boiler set-up - multiple zones, one was two floors, one three. Both boilers were running in the low 20s. I ran all the zones for about an hour, pressure never really fluctuated. All's good.
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