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5. Mount the humidifier cabinet on the duct. The two
positioning tabs on the back of the cabinet should
align with the 7/32" holes drilled earlier. Use four
supplied screws to secure the cabinet to the duct.
6. Use level to make sure the cabinet is installed correctly.
7. Firmly insert the water supply tube back into the
water nozzle on the top of the distribution tray.
STEP #3: MOUNTING THE BYPASS COLLAR AND DAMPER
1. Use adhesive tape to affix the bypass template onto
the duct in the selected area.
2. Drill three marked 1/8" holes.
3. Cut out the area to form a circular opening on the duct.
4. Mount the by pass collar and damper using three
supplied screws. Air damper should be installed in the
open position. The top screw secures the damper.
STEP #4: WATER SUPPLY AND DRAINAGE CONNECTION
1. Sand both ends of the water supply tube . Failure to
do so may result in leaks.
2. Prepare the end of the 1/4" tubing for water
connection to the humidifier( all required hardware
is supplied in the valve kit)
3. Make the tube connection to the humidifier. Hand
tighten the nut first taking care not to strip the threads
on the valve, use an adjustable wrench to tighten down
a couple more turns. Do not over tighten.
4. Select the most convenient location for connecting
self piercing needle valve on a cold water pipe.
Connect the needle valve.
5. Once the valve is connected to the pipe, hand
tighten the nut first taking care not to strip threads,
use adjustable wrench to tighten down a couple
more turns. Do not over tighten.
6. Once the valve is mounted and the water tube is
connected you have to pierce the water pipe. Turn the
valve closed all the way and then open so that water
can flow to the humidifier. Check all fittings for leaks
and tighten or repair if necessary. Water will not be
running through the solenoid valve until electrical
connections are made and your furnace is switched on.
7. You must run a drain tube for this unit.
STEP #5: MOUNTING THE HUMIDISTAT
AND ELECTRICAL CONNECTIONS
Humidistat is packaged for wall mounting . For duct
mounting , follow the steps given below
Humidistat should be located upstream (about 6")
from the humidifier on the return air duct. The unit
comes with a humidistat mounting template. This
template is for duct mounting the humidistat only.
1. Drill four 2.5 mm diameter holes on the template
used for mounting humidistat.
2. Cut out the Humidistat cutout area on duct.
3. Separate the low voltage wire at a suitable point,
c u t o n e w i r e a n d s t r i p
Humidistat terminals.
4 . I n s t a l l e d t h e 2 5 VA C
according to furnace manufacturers' instructions.
5 . U s i n g t h e t w o 9 0 ° t e r m i n a l s p r o v i d e d i n t h e
Humidistat kit and the low voltage wire, connect one
terminal of the humidistat to one terminal on 25VAC
transformer. Connect other humidistat terminal to
one black lead of the solenoid switch through the
3/8" diameter hole on the back plate.
6 .
C o n n e c t
t h e
o t h e r
transformer to remaining black lead of the solenoid
switch. Make sure to cover the exposed wire joints
using wire nuts.
7. Mount
the Humidistat
provided in the humidistat kit
8. Remove paper backing from Humidistat label and
stick it on the face. Fix the knob on stem.
STEP # 6: TESTING THE UNIT
1. After completing water supply, drain and electrical
connection, secure the bypass duct. If flexible duct is
unavoidable, make sure it is pulled as tight as
possible.
2. Turn on the water. Turn on the furnace power
supply. When the furnace activate, electrical power
is supplied to the humidifier and humidistat.
3. Adjust the setting on Humidistat according to values
given in the label attached to Humidistat.
Installation
t h e e n d s t o c o n n e c t
t r a n s f o r m e r o n f u r n a c e
t e r m i n a l
o f
t h e
2 5 VA C
using the four screws
3
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