Help circulator pump to r845a

kmar35

Hi had a new gas steam boiler installed (crown ) and the plumber never got the baseboard heat that was running fine before working he replaced the circulator pump a taco but I've been trying to trouble shoot with no luck. Turn the tstat on and it clicks the relay but no power to the pump. Have power to terminal 1. Any advice is greatly appreciated trying to get the heat on for the in-laws who are coming to visit!

Paul S_3

Is there a jumper between 1 & 3?....you should get plumber to come back...you paid him right?

Zman

What is on 3,4,5 and 6? How about the neutrals.

kmar35

No jumper between 1 and 3 is that what I'm missing? Thought that is what the relay switched on. I would rather deal with it myself then call him back he did a good job on the boiler but was always hard to get back once it was "done" got a better plumber since but trying to save $$ I just unscrewed the screws on pic

Paul S_3

Its wired wrong....if the bx on the left is going to the pump.....put the white wire thats one term 4 to term 2 thats your nuetral to the pump....put a jumper between terminal 1 & 3 and switch the black wire from terminal 3 to terminal 4 (thats your hot to the pump)....where are the screws for the terminals? Also this is not going to turn on the boiler just the pump....theres no wires on terminals 5 & 6 for a boiler enable with a aquastat

kmar35

5 and 6 are blank and 3 and 4 are to the circulator 3 is going to the white on pump and 4 is going to yellow

kmar35

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The bx on the left is the power number 1 has 120 the bx on the right is the pump

Paul S_3

Wire it the way i stated above....put the 2 white wires on terminal #2.....put the black wire from the pump to terminal #4.....put the other black wire (120v hot) to terminal #1 and put a jumper between terminals #1 & #3....

kmar35

Paul previously it never kicked on the boiler it would only go on if the boiler was on it heats a very small room. So I will jump 1 to 3 and see if i get power to the pump

kmar35

OK it's working! That is awesome thank you Paul you are a wise man I really appreciate it

Zman

Paul S said:

Its wired wrong....if the bx on the left is going to the pump.....put the white wire thats one term 4 to term 2 thats your nuetral to the pump....put a jumper between terminal 1 & 3 and switch the black wire from terminal 3 to terminal 4 (thats your hot to the pump)....where are the screws for the terminals? Also this is not going to turn on the boiler just the pump....theres no wires on terminals 5 & 6 for a boiler enable with a aquastat

Exactly, if you have a low temp option on the boiler controller land 5 and 6 there