HE220, HE260 HUMIDIFIER AND INSTALLATION KIT
69-2634EF—01 12
IMPORTANT
With low-speed airflow or
variable speed systems it
is recommended to run
tubing to both the supply
and return ducts.
8. You may cut the tubing to fit
the connection length
between the elbow fitting and
switch. It is also recom
-
mended to secure the hose
to existing structures to avoid
accidental disconnection.
Fig. 13. Install tubing.
Installing the Humidistat
Installing on Mounting Duct
1. Apply the template to the duct location chosen for the humidistat. Make
sure the template is level before drilling the holes.
2. Refer to the tem-
plate (provided with
the H8908 Humidi
-
stat Installation
Instructions) to drill
the control assem
-
bly opening and
mounting holes for
the H8908.
3. Remove the H8908
case from the base.
4. Position the foam
gasket on the H8908
base.
5. Position the base on
the duct with the
arrow up.
Fig. 14. Humidistat base and rear view.
6. Secure the base to the duct using the four 1 in. (25 mm) mounting screws pro-
vided with humidistat.
7. Connect the low-voltage wires to the leads and replace the H8908 case. See
Fig. 14.
NOTE: For wall mounting instructions, see the H8908 Installation Instructions.
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.
1
1
M20179
WIRE SLOT
HUMIDISTAT WIRES
HUMIDISTAT BASE REAR OF HUMIDISTAT
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