Use and Care Manual

HE240, HE280 HUMIDIFIER
69-2685ES—07 8
a. Slide the drain clamp over the tubing.
b. Push the tubing over the drain nipple on the humidifier.
c. Hand-tighten the clamp around the tubing to secure it to the humidifier drain. The clamp is tightened
by compressing the two sides together so that one side fits into the ridged grove on the other side.
d. Secure the tubing (can use foil tape) along the route to prevent movement and ensure downward slope
for correct drainage
.
Fi
g. 9. Installing the drain tubing.
NOTE: Cut tubing to correct length so the tubing terminates at the drain.
Connecting the Pressure Switch
1. If the humidifier is installed on the supply duct (as is recommended), the pressure switch needs to have
the tubing fed to the return duct. If the humidifier is installed on the return duct, the pressure switch needs
to have the tubing fed to the supply duct.
2. Drill a 3/4-in. (19 mm) diameter hole in the duct within 10 ft. (3 m) of the switch to ensure the provided
tubing reaches the pressure tap elbow.
Fig. 10. Pressure switch.
3. Insert the black rubber grommet into the duct hole
.
4. Co
nnect the tubing to the tubing fitting elbow and insert the tubing fitting elbow into the black rubber
grommet.
M20177A
M33405