Installing The Pressure Switch - Honeywell HE220 Installation Manual And Owner's Manual

Installing the Pressure Switch

IMPORTANT
Do not install the switch in an
area where temperature
exceeds rating of
-40°F to 190°F (-40°C to
88°C).
1. Disconnect power from the
humidifier before installing.
2. Mount the switch vertically with
pressure connectors facing
down, using provided self-tap-
ping screws to secure the switch
to the duct.
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
HE220, HE260 HUMIDIFIER AND INSTALLATION KIT
Fig. 11. Pressure switch—oriented vertically.
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
Fig. 12. Mounting the pressure switch.
11
A
B
69-2634EF—01
M27300
M27303