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[adamant]

I need to add another loop to my Central Boiler 6048. I need to drain some water .. I never did this. Some say to just undo the plug and hurry to thread a valve on and some say to completely drain the unit..

What's the proper way?  I hate to drain and waste the treated water. .

[mlappin]

I need to add another loop to my Central Boiler 6048. I need to drain some water .. I never did this. Some say to just undo the plug and hurry to thread a valve on and some say to completely drain the unit..

What's the proper way?  I hate to drain and waste the treated water. .

Get yourself some clean plastic barrels or one of those mini totes in the cage, I believe those hold 225-250 gallons, use a puddle pump to pump into the barrels then back into the stove when your done.

[willieG]

I'm in agreement with whomever said..get everything ready, make sure you have room to turn the valve and (likely) nipple, back the plug out and when ready make the quick switch. (of course after you have let the water cool down to a temp that you are comfortable with getting on your skin)  you should be able to do the switch with only losing a cup or two of water.

you should be able to back out the plug until it is loose and pretty much only your hands pressure is holding it in place, holding the valve in your "good" hand right next to the plug....make the switch, pull the plug out and get the nipple in the hole right away then start threading it in.

at the very worst if you are handy at all I can't imagine loosing more than a gallon but it should be a lot less

be sure you have your thread sealant or Teflon tape on the new parts before you begin the swithc

[boilerman]

Here's a better trick. Use your shop vac and duct tape the hose to the breather vent/tube coming out the top of your furnace roof. The vacuum will almost eliminate any water coming out the open port while adding the new plumbing and no water gets sucked out the top vent either.

[hondaracer2oo4]