I have a prob with my central heating and need to find out where the heating circuit is. Is there an easy way to lift laminate flooring without shafting it for good, to get to the floorboards underneath and investigate?
Basically, it's a single-pipe central heating system (I know, not that good, but it's all I have in the absence of funds to replace it) and there's a blockage somewhere in the C/H circuit (the H/W circuit works okay). I believe there's a blockage because the boiler thermostat keeps popping only a few mins of turning on the heating, but it's fine with the H/W. This suggests to me the circuit between the boiler, pump and 22mm H/W, then return, is fine. I plan to remove one rad at a time and check flow from the tails into a bucket via rudimentary hose device. When I get to a poor flow, I'm planning to assume the blockage is "upstream" from there.
The tails on a one-pipe system are not necessarily a good measure of the flow through the single pipe. The tails are fed primarily by convection of hot water at the inlet and colder water at the outlet, not by a pressure differential between the two tails (as with a two pipe system). If a significant blockage was between the two tails then you might get water spurting out at an abnormal rate from the inlet tail, but what are the odds of that?
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