How to properly bleed air out on primary manifold for high efficiency Navien boiler.

[@frankdivincenzo707]

Thank you TJ. You just save me a service call.

[@TJ_HVAC_heating_cooling]

Glad to help

[@frankdivincenzo707]

Thanks!

[@TJ_HVAC_heating_cooling]

No problem!

[@ChuckKarl525]

Fantastic! this is what I was looking for.

[@TJ_HVAC_heating_cooling]

Glad I could help!

[@antoniorestrepo4299]

Hey TJ, thank you for sharing your expertise. Can you post a video on how you fill the heat system in the house for the first time. I am replacing the boiler with a new combi unit and had to drain all the baseboards.

[@mehranhassanzadeh4871]

Thanks TJ that was very helpful. Can you post a video how to change the 3-way valve on Navien NCB-240 H please? there are some video on the older models not the models. That would be very great. Cheers

[@TJ_HVAC_heating_cooling]

I did not have a service call yet for changing that model for 3 way valve. Once I have one I will make a video.

[@TJ_HVAC_heating_cooling]

I just have the video uploaded for 3 way valve

[@TJ_HVAC_heating_cooling]

kzbin.info/www/bejne/sHvHgpyXpt5_i80 that's the video

[@amadogonzalez6815]

If you need to make a repair to the piping in one of the zones being serviced by the boiler, how would you bleed the system after the repair?

[@TJ_HVAC_heating_cooling]

Every zone have it's on isolation valve and bleeder boiler drain. You just isolate that zone by shutting off the return valve and open boiler drain with hose to the bracket, once you feel the hot water and no more air bubbles then you can turn the drain off and turn isolation valve back to on.

[@jonhopkins2648]

I will definitely try this as well i have run hot water faucet for several min to try n purge air but still pulling code for lowe water??

[@TJ_HVAC_heating_cooling]

Show me pictures of your boiler and I can tell you the steps.

[@derekjackson6084]

Hey are you familiar with circulator pumps? I am putting a new one in and i have the part but only one shut off valve. From what I see on YT if you only have 1 shutoff valve you need to "bleed it" I guess of the air. Are you familiar with that? I have pictures as well.

[@TJ_HVAC_heating_cooling]

You will need to drain water in that zone and yes bleed air out when done to circulate the water.

[@amieg178]

Will this help if the system is not producing heat but the hot water is working?

[@TJ_HVAC_heating_cooling]

Yes bleeding air out is. But you could also have a broken 3 way valve.

[@nicalone19]

Hi, you did not explain if you need to turn the machine off or if it needs to be on.

[@TJ_HVAC_heating_cooling]

It's better when it is off so you don't over heat the boiler when bleeding.

[@ozkrmoreno6781]

Hi, what happened if I do that but the pressure is 9.5?? What can I do ?

[@TJ_HVAC_heating_cooling]

It should just fill up on its own. If you're using the built in auto feeder of Navien then you have to turn on the switch just make sure all thermostat is set lower temperature or off.

[@ctmale1956]

great......

[@TJ_HVAC_heating_cooling]

Thank you ☺️

[@TJ_HVAC_heating_cooling]

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