
Annual Maintenance
For best performance, you should replace the humidifier pad in your
humidifier at least annually.
• Call your L nnox d al r for pr v ntativ maint nanc and
rplac m nt compon nts.
Annual Summer Shutdown
For th summ r humidifi r shutdown, simply turn th humidifi r con-
trol to th “OFF” s tting (all humidifi r mod ls) and clos th damp r
(Mod ls HCWB3-12, HCWB3-12K, HCWB3-12A, HCWB3-12AK,
HCWB3-17, HCWB3-17K, HCWB3-17A and HCWB3-17AK).
Dealer Instructions for Preventative Maintenance
NOTE: Annual insp ction and pr v ntativ maint nanc of your total
h ating syst m is important for ffici nt and saf op ration. Call your
L nnox d al r for humidifi r s rvic and maint nanc insp ction.
Your humidifi r is quipp d with an in-lin wat r strain r and orific
as shown b low. Th s parts should b insp ct d and cl an d p ri-
odically to assur continu d prop r humidifi r p rformanc . Insp ct
mor oft n if s ing “whit dust”.
I. Water Line Inspection and Service Instructions
II. Required Maintenance (Humidifier Models
HCWB3-12, HCWB3-12K, HCWB3-12A, HCWB3-12AK,
HCWB3-17, HCWB3-17K, HCWB3-17A & HCWB3-17AK)
1. Disconn ct main pow r to furnac .
2. Not Humidifi r Control s tting and turn dial to th “OFF” position.
3. Turn off wat r supply. Turn th int gral bypass damp r (3) to th
SUMMER position.
4. Pr ss th tabs in th latch s on th top and bottom of front cov r
(1) and pull cov r off bas with both hands. S t asid .
5. Car fully pull th plastic f d tub (2) out of th distribution tray
(5) at th top of th vaporativ ass mbly (4). Pull this ass mbly
out by grasping at top and tipping out.
6. Unsnap th distribution tray (5) from th scal control ins rt (8).
Lightly scrap out or brush off any min ral d posits, b ing car -
ful not to str tch or loos n th synth tic fabric lin r. Soaking th
tray in vin gar or a lim -r moving ag nt is h lpful wh n trying to
r mov stubborn min ral d posits.
7. Slid th Humidifi r Pad (7) out from th scal control ins rt (8).
Cl an th scal control ins rt of min ral d posits. R plac th
Humidifi r Pad annually or if p rformanc drops (Catalog No.
X2660 for Mod ls HCWB3-12, HCWB3-12K, HCWB3-12A and
HCWB3-12AK, and Catalog No. X2661 for Mod ls HCWB3-17,
HCWB3-17K, HCWB3-17A and HCWB3-17AK). Slid th Humidifi r
Pad back into th scal control ins rt with th color d spot up and
snap th distribution tray (5) back into plac .
8. Insp ct th plastic f d tub (2) by g ntly fl xing it and looking for
cracks or signs of w ar. R plac tub if it is crack d, brittl , or
has b n damag d.
9. R install th vaporativ ass mbly (4) into th humidifi r by fitting its
drain into th round r c ptacl at th bas of th humidifi r. Push th
ass mbly in at th top until it snaps into plac . Push th nd of th
f d tub (2) back firmly into th distribution tray and r plac th
front cov r (1).
4
1. Disconnect elect ical powe to the
fu nace and shut off wate supply.
2. Disconnect the wate line at the
inlet comp ession nut.
3. Remove the in-line st aine f om
inside the inlet side of the valve by
using a small nail o wi e.
4. Flush the in-line st aine clean o
eplace with a new st aine ,
Se vice Depa tment, Catalog No.
22N14.
5. Reconnect the inlet wate line.
Use 7/16” wrench to hold valve
while tightenting compression
nut with 1/2” wrench to prevent
damage to valve bracket and to
ensure watertight connection.
6. Disconnect the wate feed tube at the outlet comp ession nut.
7. Inspect the wate feed tube by gently flexing it and looking fo
c acks o signs of wea . Replace tube if it is c acked, b ittle, o has
been damaged.
8. Remove the o ifice f om the coppe o plastic wate feed tube and
make su e this small opening is unplugged.
9. Replace the o ifice and econnect the wate feed tube. Use 7/16”
wrench to hold valve while tightenting compression nut
with 1/2” wrench to prevent damage to valve bracket and to
ensure watertight connection.
10. Remove the d ain line f om the bottom of the humidifie . If applicable,
flex it to loosen any mine al deposits o blockages. Flush the d ain
line with wate unde p essu e to clea it of any deb is, and slip it
back onto the d ain fitting. If d ain line does not clean p ope ly,
eplace it. Inspect the d ain line to make su e it has a constant
downwa d slope and is not flattened o blocked.
11. Tu n on wate supply and econnect elect ical powe to the fu nace.
INLET
COMPRESSION
NUT
INLET
SOLENOID
VALVE
ORIFICE
OUTLET
COMPRESSION
NUT
IN-LINE
STRAINER
WATER
FEED TUBE
90-1053
1. Front Cov r
2. F d Tub
3. Int gral Bypass Damp r
4. Evaporativ Ass mbly
5. Distribution Tray
6. “V” Notch s
7. Humidifi r Pad
8. Scal Control
Ins rt
9. Drain Lin
90-1422
WARNING
Electrical Shock Hazard
Can caus injury or d ath.
Disconn ct all l ctrical pow r suppli s b for
s rvicing.
Shut off wat r supply b for disconn cting or
tapping into any wat r supply lin .