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Posted by Heatpro on December 14, 2005 at 10:50:48:
In Reply to: peerless boiler posted by Joe on December 14, 2005 at 10:25:47:
It has fresh water feed to it all the time when it needs it and inside pressure is 20 lbs. The maintenance book said that every month I should open the safety valve to let any mineral build up get past the 20 lb. regulated valve.
+++ If there are no leaks in the heating system, where do minerals come from? Even if you have the water feed open to the sealed system, if there are no leaks, no more water can come in - thus no mineral buildup. Thus, the instruction is for LEAKY systems, which shouldn't exist in a home.
It is a good idea to test the system once a year by building pressure up so it pops the relief valve and moves sedimant from the relief valve seat, but doing so also means that the dirt can settle in the seat and a new valve should be on hand to replace it if it drips after testing.
If the pressure gets to 80 lbs; then there is something wrong with the relief valve as it should have opened at 30 lbs (most are set at 30 lbs. yours as well) so the boiler won't be subjecte to 80 lbs which is more than it is tested to sustain.
No, you don't have to drain the water inside a hot water boiler; only if you need to open the sealed system to fix it.
The water coming through the hot water coil to your spigots comes through a separate copper coil inside the boiler, so the boiler water in the sealed system doesn't come in contact with the domestic water on the way through to the sinks.
Thus, there is no maintenance to be done to the water inside the boiler, just maintenance to the burner adjustments with combustion testing tools and lubrication of motors (if not permanently lubricated.) Maintenance may be slightly different from one boiler manufacturer to another, so you want to look in the owners manual - if you don't have one call Peerless to get one or go to their books on line. Boiler manufacturers do know how other boilers are made, but they try very hard to make them different, so different companies may have different maintenance procedures for the ones tha they made different.
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