Madman,
First off, let me say, I am by no means an expert. We had nothing but trouble with the zone valve controls (4 zones) on our boiler (Weil McLain) when we bought our house 12 years ago. I can't remember what brand they were, but they were small and seemed inadequate. About 3 years ago, I tried a new repair company, and they replaced all 4 with Honeywell units that are plain silver boxes about 4" square, with a commercial look to them. So far, they have worked like a champ, and the system regulates beautifully.
Good Luck
First off, let me say, I am by no means an expert. We had nothing but trouble with the zone valve controls (4 zones) on our boiler (Weil McLain) when we bought our house 12 years ago. I can't remember what brand they were, but they were small and seemed inadequate. About 3 years ago, I tried a new repair company, and they replaced all 4 with Honeywell units that are plain silver boxes about 4" square, with a commercial look to them. So far, they have worked like a champ, and the system regulates beautifully.
Good Luck
