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ZSR Series switching pump relays. Caleffi

Harvey Ramer

Harvey Ramer Member Posts: 2,261

September 2016 in THE MAIN WALL

Do they all come with a primary pump terminal in addition to the switching zones?

@hot rod

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Comments

hot_rod Member Posts: 22,786

September 2016

I know the Gen. ll has a primary pump contact and 3 aux/ end sw terminals.

if the box has a roman numeral ll on the end it is a second generation.

Screen Shot 2016-09-05 at 2.05.37 PM.png 186.2K

Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream
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Harvey Ramer Member Posts: 2,261

September 2016

Thanks Bob

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