Honeywell HE240 Installation Manual page 12

HE240, HE280 HUMIDIFIER AND INSTALLATION KIT
3. Insert the black rubber grommet into
the duct hole.
4. Connect the tubing to the tubing fit-
ting elbow and insert the tubing fit-
ting elbow into the black rubber
grommet.
5. Connect the other end of the tubing
to the applicable pressure connec-
tion on the switch.
a. If the humidifier is installed on the
supply duct (as is recom-
mended), 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.
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.
69-2686EF—01
Fig. 12. Installing the pressure switch
12
tubing.
M33326