Instructions / Assembly

Radon Print
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CONDENSATION & DRAINAGE
Condensation can form in the piping of a mitigation system when the air in the piping is
chilled below its dew point. This can occur at points where the system piping goes through
unheated space such as an attic, garage or outside. The system design must provide a
means for water to drain back to a slab hole to remove the condensation. The fan MUST
be mounted vertically plumb and level, with the outlet pointing up for proper drainage
through the fan. Avoid mounting the fans in any orientation that will allow water to
accumulate inside the fan housing. The fans are NOT suitable for underground burial.
Under some circumstances a condensate bypass should be installed in the outlet ducting
as shown in Figure 1. This may be particularly true in cold climate installations, which
require long lengths of outlet ducting or when the outlet ducting is likely to produce large
amounts of condensation because of high soil moisture or outlet duct material. Schedule
20 piping and other thin-walled plastic ducting or aluminum downspout piping will normally
produce much more condensation than Schedule 40 piping.