Extra circulator pump. How do I wire it?

Discussion in 'Boiler Forum' started by jdshopping, Dec 31, 2010.

  1. jdshopping

    jdshopping New Member

    Dec 31, 2010
    Minneapolis, MN

    New to this forum. Thank you so much for taking a look.

    I have a boiler/radiator system powered by natural gas. I've recently installed an extra circulator pump near the end of one of my two zones to increase the flow through a radiator that wasn't working. I currently have the new circ pump "hot-wired" to a light switch. So I can turn it on and off and it works like a champ -- no problem.

    Here's my question:

    I would like to tie the power for the new circ pump to the original circ pump that's on the same zone. That way when the thermostat calls for heat, both pumps fire up and move water together.

    To do this, I found the load wire and common line coming out of my relay switch for the original circulator pump. I spliced new wire from the load and common and ran it to the new pump. The problem is -- I don't get any power to the new pump. The original still works fine. What am I doing wrong?

    Relay: Honeywell RA832A http://customer.honeywell.com/techlit/pdf/69-0000s/69-2041.pdf

    Original Circulator: Grundfos UPS 20-42

    New Circulator: Taco 007 http://www.taco-hvac.com/en/product...iew=ProdDetail&current_category=52&Product=10

    Thanks for any help you can share.
Similar Threads: Extra circulator
Forum Title Date
Boiler Forum taco circulator problem Feb 18, 2015
Boiler Forum Circulator Pump is pushing water through neighbor zones Feb 14, 2015
Boiler Forum Why would my circulator pumb keep going out? Feb 12, 2015
Boiler Forum Want to add speed control to a single speed circulator pump Jan 12, 2015
Boiler Forum Newbie Circulator?? Questions Apr 10, 2013

Share This Page