Replies

1. 
   hvtrimguy | Oct 06, 2005 03:45am | #1

   put a wye on top of drain pipe ,place hose so as to have a 1 inch air gap between fitting and hose ,this would be my best guess

2. 
   PatchogPhil | Oct 06, 2005 04:50am | #2

   You might need a backflow check valve so that the washer machine doesn't pump water at the dehumidifier.

   I have done this very thing altho I had the dehumidifier draining into a condensate pump.  The pump pumped up into a horizontal 2" pvc pipe with a backflow check valve (pvc with a flapper inside).  This pipe tee'd into the drain pipe for the washer.

   Between the check valve and the condensate pump I had 6 ft of 2" pipe to act as a buffer in case the washer was pumping at the same time condensate pump decided to discharge.

    

    

    

3. 
   plumbbill | Oct 06, 2005 04:55am | #3

   Wow that's some old plumbing.

   I'm sure you don't want to hear the -- by the book way---

   You could cut the stand pipe just above the trap, and install a larger pipe.

   To incorporate 2 hoses going into it & I see height restrictions for a full 1" air gap as noted you coud whistle cut the hose so part is below opening & part is above opening. This would give you an air break.

1. 
   pjderosa | Oct 08, 2005 05:58am | #4

   Thanks for the info.  Could you clarify what you guys mean by the air gap?

1. 
   plumbbill | Oct 08, 2005 11:53am | #6

   Air gap is a vertical unobstructed clearance from the lowest point of the pipe to the highest point of the drain.

   Air break is a physical separation of the pipe opening to the drain opening.

   Both of these are used to prevent back syphon if the drain were to back up & overflow.

4. 
   DanH | Oct 08, 2005 06:27am | #5

   Leave the unit on the floor and install a condensate pump.

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