HE360 HUMIDIFIER AND INSTALLATION KIT
11 69-2629EF—01
3. The return duct is recommended,
however the switch can also be
mounted to the supply duct.
4. Cut a 3/4-in. diameter hole in the
duct within 10 feet of the switch to
ensure the provided tubing reaches
the pressure tap elbow.
5. Insert the black rubber gasket into
the duct hole.
6. Connect the tubing to the tubing fit-
ting elbow and insert the tubing fit-
ting elbow into the black rubber
gasket.
7. Connect the other end of the tubing
to the applicable pressure connec-
tion on the switch.
e. Black connection if installed on
the supply
f. Grey connection if installed on
the return
g. Both grey and black if installed
on both
IMPORTANT
With low-speed airflow or vari-
able speed systems it is recom-
mended to run tubing to both the
supply and return ducts.
Fig. 10. Mounting the pressure switch.
Fig. 11. Install tubing.
8. 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.
M27303
A
B
SUPPLY DUCT INSTALL - AIR LINE ONLY TO TAP A,
CONNECTED TO THE + PORT ON THE AIR FLOW SWITCH
RETURN DUCT INSTALL - AIR LINE ONLY TO TAP B,
CONNECTED TO THE – PORT ON THE AIR FLOW SWITCH
SUPPLY/RETURN DUCT INSTALL - AIR LINE CONNECTED
TO BOTH THE + AND – PORTS ON THE AIR FLOW SWITCH
M27304
INSIDE
OF DUCT
CONNECT TUBING TO + CONNECTION IF PRESSURE TAP IS
MOUNTED TO SUPPLY DUCT. CONNECT TO – IF PRESSURE
TAP IS MOUNTED TO RETURN DUCT.
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