Navien Combi NCB-210???

[overdriv]

I just installed a NCB -210 in my garage hydromic heating system.

Everything seems to be working but it won't turn on when my circ pump turns on.

I thought it was an on-demand type device. Do I need to wire in a curcuit that tells it the circ pump is on?

I can flip a dip switch and make it run constantly.

If anyone has experience with this boiler please comment.

 

[overdriv]

No one has installed a Navien NCB 210, huh?

Is this a new company or new model?

 

[truckman5000]

they dont have a internal pump relay...idk why.
So you need a pump control.
You need to wire the end switch from the control to the tt end switch on the navien.
you need a tacco sr501 external pump relay.

 

[overdriv]

Thanks Truckman. We got it going today. Exactly what we did.