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READ REVERSE SIDE FIRST!
READ COMPLETE SAFETY INSTRUCTIONS AND INSTALLATION TEMPLATE BEFORE STARTING
FURNISHED ITEMS
Built‑in bypass damper
24 VAC Manual Humidifier Control
24 VAC Transformer
Saddle valve
Humidifier Installation Template
ITEMS NOT FURNISHED
Mounting screws (sheet metal screws)
Water supply line (1/4" copper)
Drain line (1/2" I.D. hose)
Low voltage wire
Bypass ductwork
Current Sensing Relay
BAYRLY10ASENSA (if required)
1.
Remove front cover by pressing center
tabs on top and bottom of the cover (1) and
base (2). Pull feed tube (3) out of the water
distribution tray (4). Tip the evaporative
assembly forward and lift it out
of the humidifier. (See Figure 1)
2.
The humidifier comes assembled for left
side discharge. If converting to right side
discharge, the base can be rotated so round
collar is facing to the right. Swap the location
of the hole plug (10) and drain spud (9) if using
a right side discharge. To remove the cap, push
and twist from inside the housing while lifting
the cap up slightly on the outside. To remove the
drain spud, twist and push from
the outside of the base.
3.
Using a level, position this template at
least 3 inches above the furnace housing or
cooling coil, if applicable, for clearance of
the drain line. Trace around template edges.
Remove the template and accurately cut the
1
1
plenum opening 9
⁄
" x 9
⁄
", being careful
2
2
to avoid injury from sharp edges.
4.
Place the humidifier into the plenum
opening, install six sheet metal mounting
screws (not furnished) at the top and sides
of the humidifier interior.
5.
Install a 6" collar in a convenient location
on the opposite plenum. Attach a 90° elbow
and measure the length of 6" round duct
required to make the connection. The design
of the humidifier collar provides a solid
connection with the bypass duct through the
use of inside support ribs and pre‑formed
holes for sheet metal screws. Slip the duct
1. Front Cover
2. Base
3. Feed Tube
7
4. Water Distribution Tray
5. Humidifier Pad
6. Scale Control Insert
7. Integral Damper
8. Damper Handle
9. Drain Spud
10. Hole Plug
11. Nameplate
90‑1108
12. Solenoid Valve
TEMPLATE MUST BE LEVEL
inside the collar of the humidifier, up
to the support ribs. Using the pre‑
formed holes at the top and bottom
of the humidifier collar, secure the
duct to the humidifier collar with two
sheet metal mounting screws (not
furnished). Support bypass ducts
longer than 4 feet to prevent sagging.
6.
Reinstall the evaporative assembly
back into the base, with the bottom
of the scale control insert (6) sitting
firmly in the inside of the drain spud
(9). Push the feed tube back into the
water distribution tray. (See Figure
2) Put the front cover back on. If
the nameplate (11) is upside down,
remove it and rotate the nameplate
so it is right side up, and snap back
into place. Turn damper handle (8) to
the open position "WINTER" for the
heating season, or closed position
"SUMMER" for the cooling season.
7.
Locate and install the Manual
Humidifier Control by following the
instructions shown in step #7A.
DISCONNECT ELECTRICAL POWER TO
FURNACE BEFORE PROCEEDING TO
STEP #7A!
10
2
9
6
8
1
– TOP –
Figure 1
Figure 2
90‑1067
7A.
MANUAL HUMIDIFIER CONTROL INSTALLATION INSTRUCTIONS:
The Manual Humidifier Control is designed for low voltage service to control
humidification equipment. An increase in relative humidity expands the nylon ribbon
that opens the control switch to stop operation of the humidifier. A decrease in relative
humidity reverses the process and closes the control switch.
LOCATION
For Wall Mount:
1. Locate on inside wall of living area
approximately 5 feet above floor.
2. Do not locate Control in the direct path of
furnace discharge air or drafts from open doors
and windows.
3. Do not install where operation might be
affected by lamps, sunlight, fireplace registers,
radiators, concealed air ducts and pipes or
room occupants.
4. The basic rules for location of thermostats also
apply to humidifier controls.
5. Remove and discard foam gasket and secure
control to wall over wire access opening with
screws provided.
For Return Duct Mount:
1. Position manual humidistat at least 6" upstream
of bypass duct connection or humidifier.
2. Avoid injury from sharp edges when cutting
opening.
3. Make sure foam gasket is in place and secure
control to duct with screws provided.
8.
12
Connect the transformer 120 VAC primary
4
wires to the integrated Furnace Control Accessory
Terminals. The terminals are marked HUM‑H,
HUM‑N, where available. The HUM terminals will
provide 120 VAC to the transformer whenever there
3
is a call for heat. The transformer is designed to be
mounted on a junction box. See furnace Installer's
Guide for wiring recommendations. NOTE: For gas
furnaces without humidifier accessory terminals
5
providing 120 VAC, use the Current Sensing Relay
(BAYRLY10ASENSA).
9.
Tap into the top or side (not bottom) of the water
supply line with the saddle valve furnished. See
instructions on saddle valve package. The humidifier
IMPORTANT!
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.
11
READ REVERSE SIDE FIRST!
Figure 3
90‑1068
will function 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.
NOTE: The saddle valve is designed to be
fully opened or closed. Do not use it to
GENERAL INSTRUCTIONS
regulate water flow.
1. Do not attempt to repair or
10.
recalibrate Humidifier Control.
Humidifier Controls requiring
the inlet side of the solenoid valve using
service should be returned to
O.D. copper tubing (not furnished). DOUBLE
your distributor.
WRENCH TO PREVENT LEAKING!
(See Figure 3)
2. Use Humidifier Control in low
11.
voltage (24 VAC) applications
only. Install 24 VAC wiring to
I.D. plastic hose (not furnished). Run drain
Humidifier Control as shown in
line from drain spud to floor drain. CAUTION:
Wiring Diagrams, opposite side.
If hose clamp is used, do not over tighten,
3. Make sure no bare wires are
drain spud could crack. Be sure drain line
exposed or insulation damaged.
has continuous slope. NOTE: Do not sweat
Insulation on wire should extend
or directly attach metal drain line to fitting.
to head of screws.
Do not use solvent type adhesive when
connecting plastic drain line, since damage
4. Make sure all splices are
to fitting could result.
mechanically and electrically
secure.
12.
5. To remove dirt or other foreign
on furnace. Turn up Humidifier Control so
matter from nylon ribbon and
that humidifier will turn on. Allow humidifier
control interior, dust lightly with
to run until water is observed coming out of
a fine, soft brush.
the drain line. Check to see if humidifier and
saddle valve are watertight. Check operation
to make sure that all electrical components
function properly. Set Humidifier Control to
level recommended in Use and Care manual.
NOTE: BEFORE LEAVING THE
JOB SITE, MAKE SURE:
1. Saddle valve is fully open.
2. All plumbing connections are
3. Humidifier functions properly.
4. Bypass damper is in proper
Be sure Use and Care manual containing
90‑1069
Connect tubing from the saddle valve to
1
⁄
"
4
Drain spud is designed to accept
1
⁄
"
2
Open saddle valve completely and turn
watertight.
position.
18‑CH30D1‑3
10013277 B2208144A 7.18
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