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READ REVERSE SIDE FIRST!
READ COMPLETE SAFETY INSTRUCTIONS AND INSTALLATION TEMPLATE BEFORE STARTING
Figure 1
FURNISHED ITEMS
Automatic Humidifier Control
Automatic Humidifier Control
Installation Sheet
Saddle Valve
Humidifier Installation Template
ITEMS NOT FURNISHED
Mounting screws
(sheet metal screws)
Water supply line (
1
⁄
" copper)
4
Drain line (
1
⁄
" I.D. hose)
2
Low voltage wire
Current Sensing Relay Part No.
BAYRLY10ASENSA (if required)
1.
Place the humidifier on a flat surface.
Unlatch humidifier cover assembly from base
assembly at the bottom of the cover, lift and
set aside. Pull out the evaporative assembly
by grasping at the top and tipping out.
(See Figure 1)
2.
Using a level, position this template at
1
least 1
⁄
inches above the furnace housing
2
or cooling coil if applicable, for clearance of
the drain line. Trace around template edges.
When there is insufficient space on the
supply plenum, the humidifier can be
installed on the return duct provided the
humidifier is supplied with hot water. Remove
the template and accurately cut the plenum
3
5
opening 14
⁄
"W x 14
⁄
"H, being careful to
4
16
avoid injury from sharp edges.
1. Front Cover
10. Motor Mount Gasket
2. Base
11. Circuit Board
3. Orifice Plate
12. Power Cord
4. Motor Mount Bridge
13. Strain Relief Bushing
5. Scale Control Insert
14. Solenoid Valve
6. Water Panel Evaporator
15. Connector Plug
7. Water Distribution Tray
16. Feed Tube
8. Fan Blade
17. Nozzle
9. Motor
4
1
9
10
11
90-888
13
TEMPLATE MUST BE LEVEL
90-923
3.
Position the two plastic hooks on the top
of base along the top edge of the plenum
opening. Push base up to engage the two
hooks and sheet metal along the top edge
opening. Push base in and slide down so that
the bottom four hooks engage the sheet
metal at the bottom edge of the opening.
Secure base to opening using top three
screw holes in housing. An additional hole is
provided at the bottom for securing the base
to the plenum. (See Figure 2)
4.
While pressing the base against the plenum,
reach through the center opening and turn left
and right swing latches down to secure the
base onto the plenum. (See Figure 3)
PARTS LIST
7
3
8
6
12
TOP
Figure 2
90-924
5.
Reinstall the evaporative assembly into the
base, with the bottom of the scale control
insert (5) sitting firmly in the inside of the
drain spud attached to the base. Push the
evaporative assembly in at the top between
the retaining ribs that hold the assembly in
place in a vertical position. Reinstall cover
assembly by hooking at the top of base
assembly and latching at the bottom.
6.
Install the Automatic Humidifier Control in
the return duct using the installation
instructions enclosed (see Wiring Diagram,
opposite side). For detailed installation and
wiring instructions, see "Installer's Guide/
Automatic Humidifier Control, Form
#18-CH31D1-2" included with the humidifier.
2
17
15
16
14
5
READ REVERSE SIDE FIRST!
Figure 3
90-925
7.
The humidifier power cord must be plugged
into a 120 VAC outlet. Do not use an extension
cord. Do not power 120 VAC outlet from the
furnace blower circuit. The Automatic Humidifier
Control must be powered from a 24 VAC source
connected to the "R" and "C" terminals on the
control. The 24 VAC humidifier wires (brown)
must be connected to the "H" terminals on the
control. CAUTION: Do not connect brown wires
to "ACC" or "HUM" terminals on furnace or
damage to the humidifier could result.
In order for the humidifier to turn on, the
furnace blower must be operating and the
control must be calling for humidity. The
interface between the humidifier and the
furnace to detect blower operation can be
accomplished several different ways:
A. If the humidifier is plugged into a
continuously powered 120 VAC outlet and
the humidifier control "R" and "C" terminals
receive 24 VAC from a transformer that is
powered from the "HUM" terminals of the
integrated furnace control board (IFC), or
24 VAC from the low voltage terminal strip
"W" and "B/C" of the IFC, the two brown wires
from the humidifier can be connected directly
to the "H" terminals on the humidifier control.
B. If the humidifier is plugged into a 120 VAC
outlet that is only powered when the furnace
burner and blower for air distribution is in
operation, then the humidifier control "R"
and "C" terminals can be supplied with
continuous 24 VAC, and the two brown wires
from the humidifier can be connected directly
to the "H" terminals on the humidifier control.
C. If the humidifier is plugged into a
continuously powered 120 VAC outlet and the
control is powered from a continuous 24 VAC
source, then a Current Sensing Relay Part
No. BAYRLY10ASENSA (not included) must be
installed in the humidifier circuit. (Brown
wires connected to "H" terminals on control.)
8.
Tap into water supply line with the saddle
valve furnished. See instructions on saddle
valve package. The humidifier will function
IMPORTANT!
Be sure User's Information Guide containing instructions for
operation and warranty information is given to owner in order to avoid unnecessary
calls. Warranty is void unless humidifier is installed by qualified heating and air
conditioning contractor due to possible misapplication of product.
Figure 4
90-926
with cold, hot, softened or unsoftened water.
The use of service hot water (140°F MAX.)
and constant blower operation will provide
maximum evaporative capacity. When
installing humidifier on heat pump system,
humidifier must be supplied with service
hot water.
NOTE: The saddle valve is designed to be
fully opened or closed. Do not use it to
regulate water flow.
9.
Connect tubing from the saddle valve to
1
the inlet side of the solenoid valve using
⁄
"
4
O.D. copper tubing (not furnished).
DOUBLE WRENCH TO PREVENT LEAKING!
(See Figure 4)
10.
Drain spud is designed to accept
1
⁄
" I.D.
2
plastic hose (not furnished). Run drain line from
drain spud to floor drain. CAUTION: If hose
clamp is used, do not overtighten, drain spud
could crack. Be sure drain line has continuous
slope. NOTE: Do not sweat or directly attach
metal drain line to fitting. Do not use solvent
type adhesives when connecting plastic drain
line, since damage to fitting could result.
11.
Open saddle valve completely and turn
on furnace. Turn up humidifier control so that
humidifier will turn on. Allow humidifier to run
until water is observed coming out of the drain
line. Check to see if humidifier and saddle valve
are watertight. Check operation to make sure
that all electrical components function properly
by utilizing humidification system check-out
section in the "Installer's Guide/Automatic
Humidifier Control, Form #18-CH31D1-2". Set
humidifier control to level recommended in
the "User's Information Guide".
NOTE: BEFORE LEAVING THE
JOB SITE, MAKE SURE:
1. Saddle valve is fully open.
2. All plumbing connections are
watertight.
3. Humidifier functions properly.
18-CH28D1-2
10007039 B2204134B 7.08
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