1. Typical installations of the humidifier
•
There are two frequently encountered types of installations: LOW-BOY furnace and HI-BOY furnace.
•
This humidifier MUST be installed on the return duct (cold air). If you install it on the supply duct, the air presssure in the warm air duct
may lift the cover.
•
Identify the return duct and choose the duct side which offers the best access for installation and maintenance.
•
The humidifier must be installed in such a way that if a leak occurs, the water could not cause any damage to the property.
2. Preparing the humidifier
This humidifier is factory assembled with the air inlet located at the left side, thus the motor will be installed on the right side. This is reversible, if necessary.
However, if it is suitable as supplied, please go directly to the next step.
To reverse the sides, do the following :
•
If the plastic is cold, please allow it to warm-up before you proceed with this unfolding operation.
•
Lift the front of the water pan to disengage it from the sides of the humidifier and slide it out of the unit.
•
Remove the two screws located at the top of the humidifier body.
•
Open the two sides of the humidifier.
•
Bend the two sides in the opposite direction and finish with the top.
•
Put the two screws back in place, taking care to not strip the plastic material.
3. Installing the humidifier
• Shut off the furnace power. •
Kit No. 1
contains all the material you need to install the humidifier body.
• Choose the location of the template and make sure that a distance of approximately 14” between the furthest left vertical line of the
humidifier opening and the centre of the air take-off collar can be obtained.
This 14” dimension is given for a typical installation, some installations may differ.
• Apply the humidifier template (
#1
) on the return duct, level it and then attach it to the duct.
• Starting from the vertical line of the opening (the one closest to the warm air duct), measure 14” and mark the centre of the air take-off opening.
Warning :
Always check that you are not about to cut or drill into any air conditioning or electrical accessory during installation.
• Center punch the four screw holes and the four corner holes through the template and pierce 8 holes in the duct with a 3/32” drill.
• Remove the template. Join the four corner holes with a marker line. Make a starting hole and cut a rectangular opening that will
correspond to the back opening of the humidifier (7-3/4” x 6-1/2”).
• Install the humidifier in the opening and attach it with the four screws #8 x 3/4”. The ribs around the humidifier back opening must
fit into the rectangular opening in the duct. Check that the humidifier body is level from side to side and from back to front to make sure the drum will touch the water
equally. Then fasten the humidifier to the duct.
•
Fasten the motor to the opposite side of the air intake.
Kit No. 5
contains the motor and two screws.
We recommend the installation of the motor on the same side as the draining system (i.e. the right side). Although the humidifier would work
the same way after being reversed, a motor installed on the right side gives a better "drive" on the mechanism.
5. Installing the air take-off collar
The plastic air take-off collar is combined with an adjustable damper. Draw a 6" dia. circle on the point previously marked on the warm
air duct.
Warning :
Always check that you are not about to cut or drill into any air conditioning or electrical accessory during installation.
• Make a starting hole in the duct and cut the round opening for the air take-off collar.
• Centre the collar on the opening and rotate it so that the damper actuator will be accessible after you install the flexible duct.
Then mark and drill the four fastening holes (3/32" dia).
• Fasten the air take-off collar to the duct with four screws.
6. Installing the flexible duct
• Measure the required flexible duct length necessary to connect the humidifier to the air take-off collar, so it does not sag. Keep in
mind that the damper mobile plate needs a little space to rotate inside the flexible duct. Then cut the excess portion of the flexible duct.
• Slide the flexible duct on the air take-off collar and secure it by inserting the plastic pins through the foil in between tw o
reinforcement wires.
• Repeat this operation at the humidifier side.
7. Installing the automatic valve Kit No. 2
The automatic valve can be installed only on the left side of the unit.
•
Remove the oblong knockout on the left side to open a hole where the automatic valve will be installed.
•
Install the valve inside the casing and fasten it with the hexagonal plastic nut. The valve body is held in a vertical position by two ribs
of the humidifier body.
•
Take the float and install it
behind
the valve lever with the pivot pin fitted in the round hole.
•
From the front, insert the screw in the kidney-shaped opening through the valve lever and the float arm and screw it into the nut
installed in the hexagonal housing of the float arm.
•
Partially tighten the screw.
4. Installing the humidistat and the transformer / circuit wiring
This humidifier is supplied with a transformer that can be plugged in to any electric outlet. The humidistat is a duct mounted type.
The RETURN duct mounting method allows a better “sensing” of all the air returned to the furnace without being disturbed by a sudden
increase in moisture level (kitchen or bathroom), thus offering superior humidity control.
Kit No. 4
contains all the material you need to install the humidistat.
•
The humidistat should be installed on a flat and vertical surface of the RETURN duct at 6 inches minimum upflow from the humidifier top.
•
Attach the humidistat template on the duct.
Warning :
Always check that you are not about to cut or drill into any air conditioning or electrical accessory during installation.
•
Mark and drill the mounting holes and cut an opening for the humidistat.
•
Push the two quick connectors on the humidistat terminals identified #2 (or COM) and #3 (or NO).
•
Split the wire coming from the transformer in two on a suitable distance to connect one end to one of the motor wires and
the other end to the humidistat terminal identified #2 (or COM).
•
Use the separate piece of wire to connect the other wire of the motor to the second humidistat terminal identified #3 (or NO).
•
Run the control wires through an opening located at the bottom of the front panel of the humidistat.
•
Hold the wires while you install the humidistat in the opening. Check that the metal of the duct neither touches the connections
nor cuts the wire insulation. Then fasten the humidistat to the duct. The humidistat mechanism is exposed in the duct.
•
Temporarily install the control knob on the humidistat.
Installation Instructions
for Humidifier Model DS-2800
9. Installing the water pan into the humidifier
•
Slide the water pan into the humidifier, between the two plastic rails located at the sides of the unit.
•
Slightly open the sides of the humidifier and insert the two side tabs of the water pan into the two rectangular holes in the sides of the humidifier.
•
Push the front of the water pan down to snap the two tabs in the sides of the humidifier.
8. Preparing the water pan
Version 9
July 2015
transformer motor
humidistat
The
DS-2800
is supplied with an overflow protection tube to be installed in the hole of the pan. Although we strongly recommend using it, if you don't want to
take advantage of the overflow feature or if you don't have a floor drain, leave the factory installed vinyl cap on the spigot.
• Install the overflow tube through the hole in the pan.
• Install the O-ring around the screw part that sticks at the outside of the pan, then the plastic washer.
• Secure the overflow tube to the water pan with the plastic nut, without stripping.
