Favorite or preferred LWCO?

Old 01-17-09, 12:03 PM
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Favorite or preferred LWCO?

I have a hot water boiler with a tapping in the supply piping that can accept a LWCO. I would like to add one to the system, but there are lots of options.

From what I've read so far, a 120V interrupt is slightly preferred since it kills all power to the burner and circulators.

Here are the models I've seen so far:

Hydrolevel Safgard 1150 (or 1100 for 24V)
McDonnellMiller RB-120 (or RB24 for 24V)
Taco LTA-2

One difference I've observed is that the RB-120 uses 15W, while the others are 2-4W.

Anyone care to weigh in with a reason to favor one over the others?
Old 01-17-09, 01:18 PM
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My preference would actually be a pressure switch. Under 10psi and the system shuts down.

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