Honeywell HE420A - Manual (Page 4)

HE420A STEAM POWER HUMIDIFIER
68-0192—4 4
1. Position the bracket 1/2 in. (13 mm) from the edge of the
duct and trace around the bracket. See Fig. 5.
2. Once the outline has been traced, remove bracket.
3. Drill a 3/8 in. (10 mm) hole within the center portion of
the bracket.
4. Use tin snips to cut around the outline of the bracket.
IMPORTANT
Follow the dotted line carefully.
5. Remove the sheet metal.
Fig. 5. Position bracket.
6. Use two 8-32 screws and nuts to attach the mounting
bracket (L shaped with six holes) to the top/ front surface
of the humidifier. The humidifier is now ready for mounting.
NOTE: Position the humidifier so the upward protrusion of the
U is on the side toward the reservoir.
IMPORTANT
Do not mount the humidifier until the water level is
adjusted. See Set The Water Level section.
7. Slide the flanges of the humidifier reservoir into the
mounting bracket until the reservoir’s front flange comes
in contact with the edge of the duct.
8. Secure the humidifier to the duct with three no. 8 sheet
metal screws.
Mount Horizontally on Reinforced Duct
This horizontal mounting method usually requires duct
reinforcement to support the weight of the humidifier and keep
it level. See Fig. 3. The mounting bracket is not used.
1. Position the bracket to the bottom of the duct in the
desired location.
2. Once the outline has been traced, remove bracket.
3. Drill a 3/8 in. hole (10 mm) within the center portion of
the shaded area.
4. Use tin snips to cut around the outline of the bracket.
IMPORTANT
Follow the dotted line carefully.
5. Remove sheet metal.
IMPORTANT
Do not mount the humidifier until the water level is
adjusted. See the Set The Water Level section.
6. Slide the flanges of the humidifier reservoir into the
mounting bracket.
7. Secure the humidifier to the duct with two no. 8 sheet
metal screws.
Mount Horizontally on Vertical Duct
Horizontal mounting on a vertical duct requires the installation
of a duct extension. See Fig. 4. Additional duct reinforcement
may also be necessary to help support the weight of the
humidifier and keep it level.
Create and install the duct extension. Then follow steps 1
through 8 in the Mount Horizontally Using Mounting Bracket
section to complete installation.
WIRING
All wiring must comply with local codes and ordinances. For
complete wiring instructions, refer to the manual “Wiring
Instructions for High-Capacity Steam Humidifiers” packaged
with your HE420A humidifier.
PLUMBING HUMIDIFIER
CAUTION
Chemical Hazard.
Can cause damage to environment or air
conditioning system.
Do not use any refrigerant line connected to an air
conditioner. Be sure to install the chlorine removal filter
(provided) to prevent humidifier corrosion.
Either hard or soft water can be used in the humidifier.
IMPORTANT
Use only copper tubing to plumb the humidifier.
1. Locate the cold water pipe closest to the humidifier.
2. Install the saddle valve connector.
3. Use the valve instructions to install the valve (provided).
The valve is self-piercing when installed on copper pipe.
IMPORTANT
Position the valve so water flows from the top or side to
reduce the chance of clogging the valve with minerals.
Lightly clean the copper tubing ends with fine sandpa-
per before making any connections.
4. Install the chlorine removal filter.
5. Place the brass compression nut over the copper tubing.
6. Slide the brass ferrule over the tubing.
NOTE: Do not overtighten the compression nut.
Moderate tightness prevents leaking.
7. Insert the tubing into the valve fitting and tighten the
compression nut.
M23374
BRACKET
1/2 IN. (13 MM)
FROM EDGE