ENGINEERING DATA
ACCESSORIES
April 1997
Supersedes
#480015 September 1982
WS1-18
Bulletin #210116
HUMIDISPRAY HUMIDIFIER
Applications
Applicable to most forced air installations.
Installs on return air plenum or duct and connects to the supply
plenum or duct with flexible pipe provided.
Right or left hand air flow available.
Humidifier shipped in one package.
Sequence of Operation
By–passed supply (warm) air flows through the polyester foam
filter media.
Air is moistened by a fine spray of water from the nozzle assembly.
Air re-enters air stream on return air side.
Cabinet
Rugged one piece molded plastic.
Water tight and corrosion resistant.
Large front access door, which permits total access when removed.
Colored to match Lennox furnaces.
Humidifier service instructions molded inside of door.
Polyester Foam Filter Media
Provides large evaporation capacity.
Easy to clean using warm water and detergent.
Filter media and stainless steal wire media support frame is
easily removed and replaced for servicing.
Overflow Drain Furnished
Molded drain fitting in bottom of cabinet.
Drain hose and clamp provided.
Damper Starting Collar
6 inch (152 mm) starting collar with damper/air scoop furnished
for supply air connection in plenum or duct.
Pull chain for manual closing.
Flexible 6 inch (152 mm) pipe and clamps for connection of collar
to nozzle assembly inlet collar on humidifier.
Saddle Valve Furnished
All necessary fittings furnished as standard equipment.
Field installs in the water supply line.
Transformer Furnished
20VA (120/24 VAC) is furnished as standard equipment.
Mounts in or near furnace wiring junction box.
Humidistat Furnished
Can be mounted on wall or duct.
Provides automatic control of room relative humidity.
Wired in series with the humidifier water solenoid valve.
Has adjustable setting.
Nozzle Assembly
Consists of 6 inch (152mm) plastic collar, nozzle spray assembly and
24 volt solenoid valve (with integral mesh strainer) in one assembly.
Assembly inserts (twist & lock) in right or left opening of cabinet.
End cap furnished to insert in opening not being used.
OPTIONAL ACCESSORIES (Must Be Ordered Extra)
Filter Media (21308)
Replaces Polyester Foam Filter Media when necessary.
Deluxe Humidistat (38648)
Can be mounted on wall or duct.
Outdoor temperature and corresponding recommended
humidistat settings on face plate for reference.
Current Sensing Relay (26G12)
Furnaces without accessory terminal connection, require a
current sensing relay to control solenoid water valve.
Typical Applications
RETURN
AIR
HUMIDIFIER
HORIZONTAL UNIT
HUMIDIFIER
DAMPER
SUPPLY
AIR
SUPPLY
AIR
RETURN
AIR
UP–FLOW UNIT
LO–BOY UNIT
DOWN–FLOW UNIT
DAMPER
HUMIDIFIER
DAMPER
HUMIDIFIER
DAMPER
RETURN
AIR
SUPPLY
AIR
RETURN
AIR
SUPPLY
AIR
The maple leaf symbol in this bulletin denotes Canadian only usage where applicable
NOTE — Due to Lennox’ ongoing committment to quality, Specifications, Ratings and Dimensions subject to change without notice and without incurring liability.
1997 Lennox Industries Inc.
SPECIFICATIONS
Model No. WS1-18
Nozzle size – U.S. gph (L/hr) 3.00 (11)
Type of nozzle Delavan WD8
Nozzle spray angle
90_
Filter media cut size – in. (mm)
13-7/8 x 12-1/2 x 1/2
(352 x 318 x 13)
Water supply connection – in. (mm) 1/4 (6) compression
Drain connection – in. (mm) 3/4 (19) I.D.
Unit operating watts 10
Electrical characteristics 24v — 60hz— 1ph
Shipping weight – lbs (kg) (1 pkg.) 11 (5)
* Rated at 18 U.S. gallons (68 L) per day evaporation; 140_ F (60_C) supply air
temperature .20 in .w.g. (50 Pa) static pressure and 30% return air humidity.
DIMENSIONS — inches (mm)
WATER SUPPLY INLET
*AIR
FLOW
6
(152)
MOUNTING HOLES
AIR
OUTLET
OPENING
DRAIN
*NOTE — Right hand inlet air shown. Relocate inlet collar and motor assembly to obtain left hand inlet air.
FRONT VIEW RIGHT SIDE VIEW
BACK VIEW
8
(203)
7
(178)
6-5/8
(168)
1-1/8
(29)
12
(305)
10-3/4
(273)
11-3/4
(298)
3/8
(10)
1/2
(13)
11-1/4
(286)
1-3/4
(44)
2-1/8
(54)
3/8
(10)
1/2
(13)
5-3/8
(137)
NOZZLE ASSEMBLY
COLLAR (6 in. 152 mm)
SPRAY
NOZZLE
PERFORMANCE DATA
110
100
90
80
70
60
50
40
30
20
10
0
60 70 80 90 100 110 120 130 140 150 160 170
15 20 25 30 35 40 45 50 55 60 65 70 75 80
30
25
20
15
10
5
0
SUPPLY AIR TEMPERATURE (Degrees F)
EVAPORATIVE CAPACITY (U.S.gallons per day)
_C_C
_F_F
SUPPLY AIR TEMPERATURE (Degrees C)
EVAPORATIVE CAPACITY (liter per day)
WS1–18 / Page 2 "
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