Installing The Drain; Installing Ductwork - Aprilaire E080 Installation & Owner's Manual

INSTALLING THE DRAIN

USING HARD PIPE
• Install a 3/4" PVC slip x 3/4" MNPT PVC fitting to the
dehumidifier and use 3/4" nominal PVC Schedule 40 pipe to
run the condensate line to the nearest floor drain or to an
outside location that slopes away from the building
• Always maintain a constant downward slope in drain piping.
Ensure that drain tubing does not interfere with removal of
the side panel or filter door.
• Do not use metal fittings and only hand-tighten threaded
fittings. PTFE thread seal tape is recommended for threaded
connections
• Install a tee or three-way elbow at the dehumidifier outlet
with a small, capped vertical tube (do not cement cap in
place) to allow for cleaner to be poured into the drain line
(see FIGURE 14)
• PVC primer and cement is recommended for slip-fit
connections (do not cement threaded connections)
FIGURE 14: CAPPED DRAIN ACCESS FOR CLEANING
A
B
A. CAP
B. SMALL SECTION OF DRAIN TUBE
C. 3/4" 3-WAY ELBOW OR TEE AND ELBOW
D. CONDENSATE DRAIN LINE
USING FLEXIBLE TUBING
• Install the provided 3/4" NPT x 3/4" hose barb fitting and use
3/4" I.D. flexible drain tubing. Hand-tighten the fitting to the
dehumidifier. PTFE thread seal tape is recommended for
threaded connections
• Always maintain a constant downward slope from the
dehumidifier to the nearest floor drain or condensate pump,
and do not allow soft tubing to curl up, which may result in
air lock.
C D

INSTALLING DUCTWORK

• Use insulated duct when the dehumidifier is located in an
unconditioned space, such as an attic, garage or crawl
space, or if connecting a fresh air duct to the dehumidifier
ductwork
• Use zip ties, mastic, and tape as needed to seal the duct
connections to the dehumidifier and to seal the insulation
sleeves to prevent condensation inside the ductwork
Connecting the dehumidifier to your HVAC system will pull
air to be dehumidified from the whole home and similarly
will discharge air to the whole home Make sure the duct system
pressure the dehumidifier will have to operate against does not
exceed 0.4" Water Column (w.c.) for Model E080 and 0.6" w.c.
for Models E100/E100H. Measure the system pressure when the
HVAC fan is operating at the highest airflow (speed) setting.
There are not always readily available locations on the HVAC
duct system for connecting 10" ducts, and some local codes
do not allow ducting to the return side of the HVAC system
If so, another option is to install just the discharge of the
dehumidifier to the HVAC system (see FIGURE 16 and FIGURE 17)
or to use dedicated registers for both the inlet and discharge of
the dehumidifier (see FIGURE 18)
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