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Ask The Trades › DIY Forum › Plumbing Questions › HE30 pump run on time

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HE30 pump run on time (Read 1496 times)

Terry

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HE30 pump run on time
Apr 6^th, 2011, 5:50pm

I have moved into a flat which has an Isar HE30 boiler, it works (most of the time). When shutting down from CH, after extinguishing the burner the pump runs on for 6 minutes. It also takes 3 minutes to switch back to CH after DHW draw off has ceased.

The instructions seem to expect a few seconds for these operations rather than several minutes - does it matter?

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thescruff Global Moderator Trade Member Author Offline Who said plumbing was easy. Posts: 6037 Total Thanks: 147 For This Post: 0 Gender: Trade: Plumber	Re: HE30 pump run on time Reply #1 - Apr 7^th, 2011, 6:06pm Sounds about right to me, perhaps some tweaking of the parameters to reduce the run-on time to 3-4 minutes.
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