Which valve do I turn off auto feed

Ghynes440

I’m trying to drain my boiler which is getting replaced in a few months, which valve do I turn to stop it from auto filling? I’m trying to pull a radiator

pecmsg

red handle on the left side upstream of the auto fill b

Ghynes440

thank you!

EdTheHeaterMan

It appears that your boiler also does your hot water. How soon is the replacement boiler coming? Is there water heater already in place? If you are still using the boiler for DHW, you may want to keep the pressure valve operational until you have made arrangements for an alternative DHW source. if you let the water level in the existing boiler get too low, then you may have a cracked boiler on your hands. If that happens, you will be without DHW until you get your new system in place.

EDIT:

If you need to remove a radiator, you can cap off the both sides of the radiator feed pipes so you can re-pressurize the system for DHW usage.

HVACNUT

https://forum.heatinghelp.com/discussion/201589/which-valve-do-i-turn-off-auto-feed

Come back "in a few months" and post pics of the beautiful new boiler. 👍

hot_rod

either the red or blue valve will turn off the fill. Hopefully the pressure in the boiler, on the square gauge, does not drop with the fill valve off. If so you want to find and repair leaks before adding a new boiler.

Ghynes440

https://forum.heatinghelp.com/discussion/comment/1858205#Comment_1858205

there is a water tank already installed to the right of the boiler

EdTheHeaterMan

@Ghynes440 said "there is a water tank already installed to the right of the boiler"

Then you are good to go. shut off the water feed (Red Valve) and drain the boiler you can then remove the radiator in question.

After you install the new boiler, you will need to put the old radiator back or cap off both pipes (supply and return) so you can put water back in the system.