• Disconnect electrical power to the furnace before starting electrical installation. Electrical
shock could result in serious injury.
• Sharp edges may cause serious injury. Use care when making openings in ducts.
• Do not drill into air conditioning coil, refrigeration line or electrical accessory.
• Follow local standards and codes.
WARNING
CAUTION
Humidifier Model DS-3200
Assembly & User Manual
• Do not install the humidifier on the furnace jacket, only on the return air duct or plenum.
• Serious water damage may result if humidifier is exposed to freezing temperatures. Do not
install humidifier in location where ambient temperatures may drop below 32F/0C.
• If the heating system also has central cooling, the humidifier supply takeoff must have a
damper. The damper should be closed during the cooling season.
• Lithium grease may be used to lubricate plastic-on-plastic contact points.
• Do not connect the transformer directly to multi-speed furnace blower motors or blower motors
other than 110 VAC. (Disregard for plug in style transformer)
• Turn off the water supply before starting water connection and release pressure in the
system by opening a tap or flushing a toilet.
• Install the water supply valve on household water supply pressure only.
• Follow furnace manufacturer recommendations for electrical connections if provided.
• You may want to install this humidifier yourself. If you do, understand that the incorrect use
of any tool can cause injury to person or product. Be sure you understand how to use the
required tools to avoid any hazards. Arrange for professional installation if required.
• To ensure that your new humidifier will provide maximum benefit, your furnace must be
operating in accordance with the manufacturer's specifications. If your furnace is operating
outside of its manufacturer's specifications, your Desert Spring warranty could be voided.
• Ensure that the hot air supply temperature does not exceed 65 Celsius (150 Fahrenheit).
• Ensure that unit is mounted level.
Toll-free: 1-877-374-9799
Email: [email protected]
TECHNICAL SUPPORT
Electrocution and Chemical Hazard. Can cause death, or blindness
CUSTOMER SERVICE
Toll-free: 1-888-486-4324
Email: [email protected]
IMPORTANT
Thank you for selecting the Desert Spring® Humidifier. Carefully read this manual before starting your
installation. Follow the step-by-step instructions as written. A helpful installation video is available on line at
www.desertspringproducts.com/products/humidifier.asp . For further assistance, please contact us as follows:
2
Parts List
Tool Suggestions
• Variety of small open end wrenches
• Level
• Slot, Philips, or #2 (red) Robertson screw driver.
• Electric drill with 1/16" and 3/16" drill bits
• Tin snips or compass cutter
• ¼” hex head screw driver
• Pencil or marker
• Tape Measure or ruler
Part #
Reference
Description
DS00004
1
Blue Basin
DS00027
2
Clear Lid
DS00013
7
Drain Assembly (Threaded insert,washer,nut)
DS00009
11
Drain Cap c/w washer
DS00015
not shown
Duct Flange (metal damper plate)
DS00019
8
Float Assembly
DS00024
12
Manual Humidistat
DS00025
6
Humidifier Duct Air Inlet (plastic snap-in)
DS00021
not shown
Humidifier Hanging Bracket (metal J-hook)
DS00091
4
Motor
(Factory mounted to End Plate)
DS00030
5
Motor Mount End Plate (plastic snap-in)
DS00036
9
Self-piercing Saddle Valve Assembly
DS00046
10
Transformer 110/24VAC Plug-in
DS
-WA
3
Wheel Assembly (disc wheel,axle assembly)
DS-AX
not shown
Axel Assembly (axel, gear, clip)
Hardware
n
ot shown
3 x 3/16” (5mm) machine nuts
4 x Marettes (wire nuts)
6 x Self
-
tapping metal screws
Water line expander (part #DS00042)
Water line
not shown
10’ (305cm) x 0.25” (6mm) clear plastic
Air duct
not shown
3’ (91cm) x 6” (15cm) flex hose
Tie wraps
not shown
24” (61cm), Nylon (2x)
LV Wire
not shown
2.5’ (76cm) low voltage wire
Teflon tape
not shown
Small roll
Instructions
not shown
Manual
Parts list
Selecting a location
Assembly
Hanging the Basin
2
3
3
3
Electrical Connections
Water Connections
Installing the Disk Wheel
Adjusting the water level
4
4
5
5
Connecting the air supply
About humidity
Startup and shutdown
Template
5
6
6
7
Contents
washer
float
adjustment
nut
basin
wall
slot in
basin
Float Assembly
stem
float
seal
6
7
11
1
8
5
2
10
3
4
9
12
2. Humidifier assembly
• Install the float into the slot in the side of the basin, ensuring that
the float seal is against the outside wall of the basin.
Hand tighten the float adjustment nut.
3
1. Selecting a location
• This humidifier is to be mounted on the COLD AIR RETURN
(preferably on the narrow side) of a forced air heating system.
If the humidifier must be mounted on a plenum/duct which is over
12" wide or on non-metal duct, the plenum/duct must be reinforced and/or
the humidifier must be supported by other means.
• Ensure that there is sufficient clearance for the humidifier, water
supply, and air supply ductwork. If clearance problems exist with
utilities, qualified tradespeople should be called.
• Air is supplied to the humidifier with a 3' flexible duct connected to
the air take-off (with sliding damper) mounted on the HOT AIR
SUPPLY coming out of the furnace. (Check clearance to Air conditioner coil)
• Follow the instructions on the humidifier TEMPLATE (Page 7)to locate
and cut holes for the humidifier and take-off.
• Note that the top of the round take-off opening should be a minimum of
1” higher than the rectangular humidifier opening (max. 8’). Mount the take-off
so that the damper can be easily opened and closed.
3. Hanging the basin
• Hang the basin from the mounting hanger on
the COLD AIR RETURN. See template for instructions to
mount the hanger. (Page 7)
• Install the drain into the bottom of the
basin and finger tighten retaining nut.
Note - Teflon tape is recommended for these
connections.
After ensuring that the drain is centered,
tighen securely but Do Not over tighten.
• Next install the cap. Optionally, connect a garden
ball valve and a length of garden hose which
extends to a floor drain, or an Auto Flush unit.
• The humidifier can be configured with either
a right or left air supply. This will depend
upon the layout of your furnace.*
• Snap the motor plate and inlet into the basin.
Ensure that the basin tabs on these parts fit
into the corresponding slots in the basin. To
remove the motor plate and inlet, squeeze the
lower tab with pliers and pull upwards.
washer
float
adjustment
nut
Blue basin
wall
slot in
basin
Air
Inl
et a
nd Mo
tor Plate are Intercha
ngea
ble
*
motor
plate
air inlet
basin tab
slot
drain
cap
*interchangeable: install air inlet on the side closest
to the hot air supply take-off.
retaining nut
basin
float
drain
washer
lid tab
overflow hole
furnace
(humidifier
shown with
inlet removed
for clarity)
basin
hanger mounts
on inside
of the cold
air plenum
Float Assembly
stem
typical
humidistat
location
Rubber float
Seal
4. Electrical connections
• Mount the humidistat according to the guidelines supplied in the humidistat box. Note Humidistat must
be located at least 8" upstream of the Humidifier.
• Before making electrical connections ENSURE THAT THE POWER IS OFF!
5. Water connections
• The humidifier can be connected to either hard or softened water. Note: Softened water will
require more frequent cleaning, therefore the optional Autoflush unit is recommended. For
hard water applications an in-line water filter is recommended. For more information visit our website.
• Before starting TURN OFF THE WATER SUPPLY and relieve the pressure.
• Install the saddle valve on a copper water line as close to the humidifier as possible.
Note: For PVC piping, use appropriately sized PVC saddle (not supplied)
• CAUTION: ensure that the piercing pin is backed up into the valve body. If installing on
galvanized pipe, pre drill a 1/8" diameter hole that the piercing pin fits into.
• Assemble one side of the top clamp to the bottom clamp and place over the water line
ensuring that the rubber gasket is in place over the piercing pin.
• Assemble the other side of the top clamp to the bottom clamp with remaining fastener
and tighten evenly until unit is firmly attached to water pipe.
• Connect supplied plastic water line to valve and float as shown below. Use the plastic
quick-connect fitting and insert one end on the float and the other on the plastic tube.
• Turn the valve handle clockwise fully to pierce the water pipe. NOTE: This is the off positio
n.
ALTERNATE POWER
SOURCES (Not shown)
i)
Hard wire transformer
power from Furnace directly
ii) 24VAC direct from furnace
board. Note: Humidifier will
only operate when the
furnace is in heat mode.
For either of these options,
strictly follow the furnace
manufacturer’s instructions.
110 V
AC
humidistat
motor
(24 Volt)
humidifier
supplied
wire
Saddle valve body
Household Copper
water line
Float
Plastic water line
Basin
Piercing pin
Saddle valve clamp
Rubber gasket
Insert
Compression sleeve (plastic)
5
motor gear
v-guide Motor Plate
v-guide
tab
tab
6. Installing the disk wheel
• Using the tabs as indicators, lower the disk wheel assembly
into the V-guides on the inlet and motor plates. Ensure that
the inlet end of the axle is seated in the bearing at the bottom
of the V-guide and that the gear on the other end of the
axle is engaged with the motor gear.
disk wheel
7. Installing the lid and adjusting
the water level
• Fit the lid onto the basin.
• Turn on the water supply and check for any leaks.
• The float assembly should be adjusted so that the water fully
covers the disks as illustrated in 7a. This will ensure maximum
humidity output and will minimize calcium build up.
Note - look through the inlet to see the water level.
• Adjust the float as required. Do Not lift installed float against
stop or damage to float seal can occur.
• Secure the float adjustment nut with a 9/16" wrench.
• As an additional measure, you can fit an overflow kit to the humidifier.
For more information visit our web site at
www.desertspringproducts.com
8. Connecting the air supply
• Use one of the supplied nylon tie-wraps to secure the
flex ducting to the hot air take-off.
• Use the remaining tie-wrap to secure the
flex duct to the humidifier's inlet.
• For maximum efficiency, do not let the flex duct
sag. If you need to trim the length of the flex duct
ensure that you cut the ends square.
• If the humidifier is located beyond 3' from the hot air
take-off, it will be necessary to buy a longer
flex duct at your local hardware store.
• Ensure damper is set in the OPEN position.
damper shown in
closed position
overflow
hole*
*punch out if required
water
ensure tabs on inlet and motor plate
fit into slots in lid flanges
float
adjustment
slot
stop
Inlet
7a
10. Startup, maintenance and shutdown
• Turn on the water supply to the humidifier (if it has not been previously done), turn on the
electrical power and adjust the humidistat so that the humidifier starts. Adjust humidistat to the
desired setting. Regularly change the setting in accordance with the outside temperature.
• If the himidifier is not in use for extended periods or at the end of the humidifying season, turn off the
water, remove the disk wheel, agitate the water in a circular motion and drain the sediment and any
water from the basin. Replace the disk wheel and lid. Turn the humidistat off. Slide the damper to the
closed position.
• Under normal conditions, minimal maintenance should be required. If you live in an area where
the mineral content of the water is high (hard water), you may wish to drain the sediment as
described above and periodically clean any minor sediment deposits from the basin and
disk wheel. Use vinegar or any cleaner approved for plastic. Additionally you can install our Auto Flush unit
to automatically drain the basin every 48 hours or you can install an in-line water filter to filter out some of
the minerals. . For more information visit our web site at www.desertspringproducts.com.
• After soaking in vinegar or cleaning solution, the disk wheel should be rinsed.
• Over time metal parts may discolor. This is a normal reaction and will not affect performance.
• For excessive mineral buildup, lower water level using ball valve and scoop minerals out. Hardened
minerals will break off cleanly with minimal effort.
6
9. About humidity
• Humidity requirements will vary from home to home. Your comfort level is the best gauge of the
correct humidity. If your windows are fogged then you have too much humidity.
• In some cases it may take a week or more for the humidity to build up to the proper level. Setting
the furnace fan to run continuously will speed up this process. For related information visit the FAQ
section on our website at www.desertspringproducts.com/utility/faq.asp.
• Humidity buildup will be hampered by sloppy fitting (or open) windows and doors, exhaust
fans, open fireplace dampers, house plants, and large attics.
• Some types of carpets produce static electricity even with the correct humidity.
• Too much humidity can cause damage to your home and furnishings, and can promote the
growth of household molds and fungi. For more information visit www.ari.org/brochures, “Facts
About Humidifiers and Mold”.
• Tests were conducted to determine safe, relative humidity levels for homes exposed to various low
outside temperatures. Recommended humidity levels are shown in the chart below.
We recommend that homeowners invest in a quality hygrometer similar to the one shown above
to monitor humidity levels. For more information visit our web site at www.desertspringproducts.com.
Disclaimer
• Except as expressly stated in this manual, Desert Spring Products Limited makes no representation or warranty with respect to the
humidifier and disclaims all implied warranties including any warranty of merchantability or fitness for a particular purpose.
In no event will Desert Spring Products Limited be liable to any customer or user of the humidifier for any indirect, incidental, or
consequential damages or loss of revenues or profits, whether the same are foreseeable or not, occasioned
by any cause whatsoever including, but not limited to, the installation or operation of the humidifier.
Outside Air
Recommended
Temperature
Control Setting
-30
°C/-22°F
15 %
-25°C/-13°F
20 %
-20°C/-4°F
25 %
-10°C/14°F
30 %
-5°C/23°F
35 %
>0°C/32°F
40 %
DESER
T SPRING
® HUMIDIFIER MOUNTING
TEMPL
ATE
TO USE
TEMPL
ATE:
-C
ut out op
ening fr
om pap
er
, r
etain inside as instr
uc
tion sheet
, outside as t
empla
te
.
-T
ap
e t
empla
te on
to RETURN duc
t/plenum so tha
t it is le
vel and dr
aw the op
ening
shap
e on
to the duc
t.
-D
rill star
ter hole in a c
or
ner
, cut out op
ening with tin snips
. U
se c
ar
e t
o cut op
ening
accur
at
ely
. C
A
UTION - CUT EDGES ARE
VER
Y SHARP
.
-H
old hanger br
ack
et against duc
t/plenum so tha
t the b
ott
om of the hanger br
ack
et is
ab
out 1/2" fr
om the t
op edge of the op
ening in the duc
t/plenum.
Ensur
e tha
t it is
le
vel and mar
k the thr
ee moun
ting b
olt lo
ca
tions
. D
rill thr
ee 3/16" holes in the
duc
t/plenum.
M
oun
t the hanger br
ack
et on the inside of the duc
t/plenum using the
3/16" machine scr
ew
s and nuts
.
Hanger ma
y b
e dr
opp
ed up t
o 3/4" t
o acc
ommo
da
te lar
ger pr
ee
xisting holes
.
HO
T AIR SUPPL
Y
TEMPL
ATE
-U
se the sheet metal hot air tak
e-off as a t
empla
te
.
-H
old H
ot A
ir
Tak
e-off against the HO
T AIR supply and tr
ac
e inside the op
ening
.
-D
rill a star
ter hole inside the line and cut with c
ompass cutt
er or tin snips
.
-H
old the air tak
e-off o
ver the op
ening and mar
k the scr
ew lo
ca
tions
.
-D
rill 1/16" pilot holes and or dr
iv
e the scr
ew
s dir
ec
tly in
to the SUPPL
Y duc
t.
-S
lide the damp
er in
to plac
e b
ef
or
e final tigh
tening of the moun
ting scr
ew
s.
-R
ota
tion of the hot air tak
e-off dep
ends on y
our clear
anc
es t
o slide the damp
er pla
te
op
en and closed
.
star
ter hole
Damper
Air
Take
-off
Hanger
Installed
inside
plenum/duc
t
Dr
ill holes
Hold hanger lev
el
and mar
k
hole loca
tions
1/2"
____
7
7.8”
____
6”
U.S. Patents 5,795,505, 5,171,486
© 2008 Desert Spring Products Limited, 7490 Pacific Circle Unit 1, Mississauga, ON, Canada, L5T 2A3
In the interest of continuous improvement the manufacturer reserves the right to change specifications without notice
4
Push to
lock
Rev 2.1
