Adding a loop. Central boiler 6048

[adamant118]

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. .

 

[maple1]

Could use a siphon in the top?

 

[warno]

Could you disconnect an exciting line and let it drain down from there? Then you could catch most if not all the water.

 

[Armaton]

My brother had to repair his OWB several times, he used a couple 50 gallon blue plastic barrels to drain into. Then he just pumps it back in when he's done. He just used a 3/4 horse pond pump, but if you have ball valves on the boiler, just flip your pump around and pump it back in, (make sure it primes though).