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HE240, HE280 HUMIDIFIER AND INSTALLATION KIT
69-2685ES—01 12
3. Insert the black rubber grommet into
the duct hole.
4. Connect the tubing to the tubing
fitting elbow and insert the tubing
fitting elbow into the black rubber
grommet.
5. Connect the other end of the tubing
to the applicable pressure
connection on the switch.
a. If the humidifier is installed on the
supply duct (as is recommended),
the tube that inserts into the
humidifier needs to be attached to
the black port, and the tube that
runs to the return duct needs to be
attached to the gray port.
b. If the humidifier is installed on the
return duct, the tube that inserts
into the humidifier needs to be
attached to the gray port, and the
tube that runs to the supply duct
needs to be attached to the black
port.
Fig. 12. Installing the pressure switch tubing.
6. You may cut the tubing to fit the connection length between the elbow fitting
and switch. It is also recommended to secure the hose to existing structures to
avoid accidental disconnection.
M33326
69-2685ES_A.book Page 12 Thursday, August 8, 2019 11:09 AM
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