Quote:
Originally Posted by rjm1cc
You might have a way to use a garden hose and force water into the drain pipe. This might clean out the line. On my heater you pour vinegar and or water in a top drain. Do not use this. I have a horizontal pipe that goes into the drain line. It has a place next to the heater where I can use a garden hose. Might start at the outside drain pipe with the garden hose and have some watch the heater to tell you when water starts coming out. When I did it I let the water run on high for about 5 seconds. Let drain out and kept repeating. Then did it from the inside to flush the line. A shop vac can also be used at the outside drain or an air pump.
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IMO full pressure with water hose could cause it back up the drain and could get all way up in the A coil drain pan? My 5 dollar fix fixed that problem to get full 55 psi down the drain and out through the access Y fitting with the cap, I added cut-off valve above the access port clean out.