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READ REVERSE SIDE FIRST!
RE D COMPLETE S FETY INSTRUCTIONS
FURNISHED ITEMS
Built-in bypass damper
24 VAC Humidifier Control
24 VAC Transformer
Saddle valve
Humidifier Installation Template
Humidifier Control manuals
ITEMS NOT FURNISHED
Mounting screws
(sheet metal screws)
1
Water supply line (
⁄
" copper)
4
Drain line (
1
⁄
" I.D. hose)
2
18 gauge low voltage wire
6" bypass ductwork
Current Sensing Relay (if required)
Hose clamp
1.
furnished). Support bypass
Remove front cover by
ducts longer than 4 feet to
pressing center tabs on top
prevent sagging. Seal duct
and bottom of the cover (1)
seams and humidifier base
and base (2). Pull feed tube
with foil tape or mastic.
(3) out of the water
6.
distribution tray (4). Tip the
Reinstall the
evaporative assembly
evaporative assembly
forward and lift it out of the
back into the base, with
humidifier. (See Figure 1)
the bottom of the scale
2.
control insert (6) sitting
The humidifier comes
firmly in the inside of the
assembled for left side
drain spud (9). Snap into
discharge. If converting to
place. If evaporative
right side discharge, the
assembly does not snap
base can be rotated so
into place, reverse the
round collar is facing to the
assembly. Push the feed
right. Swap the location of
tube back into the water
the hole plug (10) and drain
distribution tray. (See
spud (9) if using a right side
Figure 2) Put the front
discharge. To remove the
cover back on. If the
cap, push and twist from
nameplate (11) is upside
inside the housing while
down, remove it and rotate
lifting the cap up slightly on
the nameplate so it is right
the outside. To remove the
side up, and snap back
drain spud, twist and push
into place. Turn damper
from the outside of the base.
handle (8) to the open
3.
Using a level, position this
position "WINTER" for the
template at least 3 inches
heating season, or closed
above the furnace housing or
position "SUMMER" for
cooling coil, if applicable, for
the cooling season.
clearance of the drain line.
7.
Locate and install the
Trace around template edges.
Manual Humidifier Control
Remove the template and
by following the instructions
accurately cut the plenum
shown in step #7A. For
opening 10"W x 12
3
⁄
"H,
4
Automatic Humidifier
being careful to avoid
Control installation
injury from sharp edges.
instructions, see Publication
4.
Place the humidifier into
No. 504,879M included with
the plenum opening, install
the Automatic Control.
six sheet metal mounting
DISCONNECT ELECTRICAL
screws (not furnished) at
POWER TO FURNACE
the top and sides of the
BEFORE PROCEEDING!
humidifier interior.
5.
Install a 6" collar in a
convenient location on the
1. Front Cover
opposite plenum. Attach a
2. Base
90° elbow and measure the
3. Feed Tube
length of 6" round duct
4. Water Distribution Tray
required to make the
5. Humidifier Pad
connection. The design of
6. Scale Control Insert
7. Integral Damper
the humidifier collar
8. Damper Handle
provides a solid connection
9. Drain Spud
with the bypass duct
10. Hole Plug
through the use of inside
11. Nameplate
support ribs and pre-formed
12. Solenoid Valve
13. Strainer
holes for sheet metal
14. Orifice
screws. Slip the duct inside
15. Transformer
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
TEMPL TE MUST BE LEVEL
7A.
MANUAL HUMIDIFIER CONTROL INSTALLATION
INSTRUCTIONS FOR HCWB3-17 & HCWB3-17K: The enclosed
Manual Humidifier Control is designed for low voltage service to
control humidification equipment. An increase in relative humidity
expands the nylon ribbon which opens the control switch to stop
operation on the humidifier. A decrease in relative humidity
reverses the process and closes the control switch. (For detailed
Manual Humidifier Control installation and wiring instructions,
see Publication No. 506407−01 included with Control.)
LOCATION
1. Locate on inside wall of
living area approximately
5 feet above floor, or in the
furnace return air plenum.
If humidifier is mounted on
return duct, Humidifier
Control must be at least 6"
upstream of humidifier.
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 next to activities
that generate moisture.
4. The basic rules for location
of thermostats also apply
to humidifier controls.
10
2
9
7
6
8
15
90-1435
TRACE ALONG OUTER EDGE
– TOP –
ND INST LL TION TEMPL TE BEFORE ST RTING
Figure 1
Figure 2
90-1067
GENERAL INSTRUCTIONS
1. Do not attempt to repair or
recalibrate Humidifier
Control. Humidifier Controls
requiring service should be
returned to your Lennox
dealer.
2. Use humidifier control in
low voltage (24 VAC)
applications only. Install
24 VAC wiring to humidifier
control as shown in Wiring
Diagrams, opposite side.
3. Make sure no bare wires
are exposed or insulation
damaged. Insulation on wire
should extend to head of
binding screws.
4. Make sure all splices are
mechanically and
electrically secure.
5. To remove dirt or other
foreign matter from nylon
ribbon and control interior,
dust lightly with a fine,
soft brush.
13
12
4
14
3
5
1
11
TRACE ALONG OUTER EDGE
READ REVERSE SIDE FIRST!
Figure 3
90-1068
90-1069
8.
11.
The humidifier solenoid valve
and Humidifier Control operate on
accept
24 VAC. In order for the humidifier
furnished). Run drain line from
to turn on, the furnace blower
drain spud to floor drain or
must be operating and the
alternate drain location. CAUTION:
Humidifier Control must be calling
If hose clamp is used, do not over
for humidity. See Humidifier
tighten, drain spud could crack.
Control manuals for Control
Be sure drain line has continuous
wiring.
slope. NOTE: Do not sweat or
directly attach metal drain line to
Do not wire transformer into
fitting. Do not use solvent type
furnace blower circuit. The
adhesive when connecting plastic
transformer can be powered from
drain line, since damage to fitting
the 120 VAC line before it enters
could result.
the furnace.
12.
9.
Tap into a water supply line
completely and check for leaks.
with the saddle valve furnished.
Turn on blower system.
See instructions on saddle valve
HCWB3-17 & HCWB3-17K –
package. The humidifier will
Adjust humidifier setting so that
function with cold, hot, softened
humidifier will turn on. Allow
or unsoftened water. WARNING:
humidifier to run until water is
RISK OF SCALDING. Water
observed coming out of drain line.
temperature over 125°F can
Check to see if humidifier and
cause severe burns and scalding
saddle valve are watertight.
instantly. Shut off the hot water
Check operation to make sure
supply before disconnecting or
that all electrical components
tapping into any hot water supply
function properly. Set Control to
line. The use of service hot water
recommended level. (See
(140°F MAX.) and constant
operating instructions in owners
blower operation will provide
manual.)
maximum evaporative capacity.
HCWB3-17A & HCWB3-17AK –
When installing humidifier on
Use humidification "System
heat pump system, humidifier
Checkout" section of Automatic
must be supplied with service
Humidifier Control Installation
hot water. When installing
Instructions, Publication No.
humidifier on return plenum, it is
504,879M. Check to see if
recommended that the humidifier
humidifier and saddle valve are
is supplied with hot water.
watertight. Check operation to
NOTE: The saddle valve is
make sure that all electrical
designed to be fully opened or
components function properly.
closed. Do not use it to regulate
water flow.
10.
Connect tubing from the
saddle valve to the inlet side of
the solenoid valve using
1
⁄
" O.D.
4
copper tubing (not furnished).
DOUBLE WRENCH AS SHOWN IN
FIGURE 3 TO PREVENT DAMAGE
NOTE: BEFORE LEAVING THE
JOB SITE, MAKE SURE:
TO VALVE BRACKET AND
ENSURE WATERTIGHT
1. Saddle valve is fully open.
CONNECTION.
2. There are no plumbing leaks.
3. Humidifier functions properly.
4. Bypass damper is in proper
IMPORT NT!
Be sure owner's manual 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.
Drain spud is designed to
1
⁄
" I.D. plastic hose (not
2
Open saddle valve
position.
10009370 B2205451A 4.11
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