I replaced the B&G series 100 pump on my existing lp boiler with a Grundfos 3-speed circulator yesterday and ran into some problems when I went to connect the old wiring to the new circulator...
First, the old wire insulator casing was shot...cracked and broken in spots so I am going to replace the wiring from the LP boiler's Honeywell control to the circulator.
Also, the install manual calls for a ground wire but the 40 year old B&G pump was just wired with two white wires and no ground. Is this a problem for wiring the new circulator? Should I run a ground circuit back to Honeywell control on the LP boiler? If so, what can I safely ground to...looking at the control I don't see an obvious ground terminal.
Thanks for any advice you care to share.
jp
First, the old wire insulator casing was shot...cracked and broken in spots so I am going to replace the wiring from the LP boiler's Honeywell control to the circulator.
Also, the install manual calls for a ground wire but the 40 year old B&G pump was just wired with two white wires and no ground. Is this a problem for wiring the new circulator? Should I run a ground circuit back to Honeywell control on the LP boiler? If so, what can I safely ground to...looking at the control I don't see an obvious ground terminal.
Thanks for any advice you care to share.
jp