Honeywell He360 Installation Information 69 1572 Humidifier Kit

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HE360 Humidifier
Installation Kit
INSTALLATION INSTRUCTIONS

WELCOME

INSTALLATION

To the comfortable world of humidified air. When you use
your Honeywell humidifier, you notice that your skin is not
as dry, and that your scratchy throat and irritated nasal
passages that aggravate allergies and asthma are
steadily improving.

Preparing for the Installation

You have also taken the first step in reducing the zapping
you create when you walk on your carpet and then touch
your TV, computer, metal door knob or your pet. Your
furniture and woodwork are also benefitting from the
difference that humidified air makes.

Required Accessories (Included)

Be sure to identify all the required (Table 1) accessories
(included) and make sure the appropriate tools are
available before beginning the installation.

Table 1. Required Accessories.
Quantity

Congratulations! You have just made a great investment
in improving the comfort of your home.

APPLICATION
This installation kit contains all the parts necessary to
install your new Honeywell HE360 Humidifier.

Accessory

20 ft (6.2m)

18 gauge, two-strand thermostat wire

20 ft (6.2m)

1/4 in. (6.35 mm) OD feed water tubing

10 ft (3.1m)

1/2 in (12.7 mm) ID drain tubing

1 bag

Connecting and mounting hardware:
Wire nuts (4)
No. 8 sheet metal screws (18)
Drain tube clamp
Feed tube mounting clamps (6)
Brass inserts (2)
Plastic compression rings (2)

1

Sail switch

1 roll

Duct tape

Required Tools
Tools required for installation include:
•
•
•
•
•

Tin snip.
Screwdriver.
Adjustable or open-end wrench.
Drill, punch or awl.
Level.

Determining Best Location for Humidifier
• Select a location for the humidifier on the supply
(warm air stream) plenum. See Fig. 1.
• Select a location that cannot damage the air
conditioner A-coil during installation.
• Do not locate the humidifier on the furnace body.

® U.S. Registered Trademark
Copyright © 2001 Honeywell •

•All Rights Reserved

69- 1572

HE360 HUMIDIFIER INSTALLATION KIT
• Allow adequate clearance in front of and above the
humidifier so you can easily remove the cover to
perform routine maintenance.
— Mount the humidifier at least 3 in. (78 mm) above
the furnace body to allow adequate space for the
solenoid valve and drain line.
— Mount the humidifier in a conditioned space to
prevent freezing.

• Mount the switch at least 6 in. (152 mm) upstream
from an elbow or junction, and at least 15 in.
(381 mm) downstream from an elbow or junction.
• Locate the switch on the opposite side of the duct
from the air entrance. (See Fig. 1-3 in S688
Installation Instructions.)

Selecting Location for Humidistat
• Select a location for the humidistat on the return
plenum or on the wall in the living space.
— Mounting on the return plenum is the easiest
installation for the control wiring circuit.
For return duct mounting, the humidistat should be
mounted upstream from the humidifier or bypass so that
it is properly sensing the relative humidity of the living
space. Locate the control at least 8 in. (203 mm)
upstream from the humidifier in the return air duct. (See
Fig 2.)

RN
TU
RE
TAL
ON
RIZ
HO

RN
TU
RE

RN
TU
RE

OY
HB
HIG

RN
TU
RE
WN
DO O
FL

ALTERNATE LOCATION
RETURN
AIR

RETURN
AIR

OY
WB
LO

6 in. (152 mm)
MINIMUM
M12808A

BEST
LOCATION

RETURN AIR DUCT

Fig. 1. Typical humidifier installation locations.

Selecting Water Supply Location

M12831

Fig. 2. Selecting duct location for humidistat.

• Use either hard or soft water in the humidifier and
either hot or cold water. The water flow rate, with the
humidifier running, is 3.5 gal/hr (13 liters/hr) to flush
the pad and provide moisture for evaporation.
• Make sure that the 20 ft (6.2m) of feed water tubing
provided is adequate to connect the water supply
(saddle valve) with the humidifier solenoid valve.

Locating Closest 120V Electrical Outlet
• Select location with access to an outlet. If not
available, contact an electrician to have one installed.
• Make sure that the humidifier cord is adequate to
reach from the humidifier to the outlet.
• Make sure that the 20 ft (6.2m) of thermostat wire is
adequate to reach from the humidifier solenoid, to the
sail switch, to the humidistat.

Locating Closest Floor Drain
• Select location with access to a floor drain to provide
drainage for air conditioner condensation and
humidifier drainage.
• If you do not have a drain available, we recommend
that you install the Honeywell Whole House Drum or
Disk Humidifier. Make sure that the 10 ft (3.1m) of
drain tubing is adequate to reach from the humidifier
drain connection to the floor drain.

INSTALLING HUMIDIFIER

WARNING
Hazardous Voltage
Can cause personal injury or equipment
damage.
Do not cut or drill into any air conditioning or
electrical accessory.

Selecting Location for Sail Switch
• Select a location for the sail switch in the cold air
return duct where the sail is in the direct path of an
unrestricted air stream.
— Sail switch detects when furnace fan is operating.
• Select a location where the air duct is at least 12 in.
(305 mm) deep and 8 in. (203 mm) wide to allow
operation of the sail without affecting the smooth flow
of air in the duct.
— Airflow at the location can be vertical (up or
down) or horizontal.

CAUTION
Sharp Edges Installation Hazard.
Can cause personal injury.
Wear gloves and safety glasses.
1.
2.

IMPORTANT
Mounting the S688 in warm air supply duct can
reduce the sail life.

69-1572

15 in. (381 mm)
MINIMUM

3.

2

Turn off power to the air handing system at the circuit breaker.
Draw a level line on the plenum in the location
chosen for the humidifier. (Leveling assures optimal humidifier performance.)
Locate the template in the Humidifier Installation
Instructions.

HE360 HUMIDIFIER INSTALLATION KIT
4.
5.
6.

Tape the template in position and trace around the
template.
Remove the template and carefully cut the rectangular opening.
Disassemble the humidifier; remove the cover and
take out the humidifier pad assembly. See Fig. 3.

10.

Hinge the cover in place and secure with the
thumbscrew located at the bottom of the cover.

CONNECTING PLUMBING
Use hot or cold water and either hard or softened water
in the humidifier.

FEED TUBE NOZZLE
WATER
DISTRIBUTION TRAY

1.

Shut off the water.

HUMIDIFIER
PAD ASSEMBLY

CAUTION
Chemical Hazard.
Can cause personal injury or equipment
damage.
Do not use any line connected to an air
conditioner.
Do not use gas line.
2.
HUMIDIFIER
HOUSING
COVER
ASSEMBLY

THUMB
SCREW

Use the self-piercing saddle valve (included) to tap
into the water supply line at the location selected.
See Fig. 5. If tapping into galvanized pipe, drain
line and pre-drill 3/17 in. tap for saddle valve.

M12809

NOTE: The saddle valve is not designed to regulate
water flow. The valve is either open or closed.

Fig. 3. Disassembling humidifier.
7.

8.

Make sure the humidifier housing is level, then
position it in the opening so the plastic tabs are in
place on the lower sheet metal edge of the opening. Use pliers, as necessary, to flatten cut edges.
See Fig. 4.
Secure the humidifier housing to the opening at the
top and bottom using sheet metal screws.

IMPORTANT
To prevent debris from clogging the solenoid inline filter, be sure to install the saddle valve handle pointing toward the ceiling.

SCREW DRIVER

SHEET METAL
SCREWS (4)

LEVEL

DUCT

WATER LINE

OPENING
TO AIR DUCT
M20175

Fig. 5. Installing saddle valve.
3.
PLASTIC
TABS (2)
DRAIN TUBING

M20204

Fig. 4. Installing humidifier on duct.
9.

Reinstall the humidifier pad assembly in the humidifier housing.

Use 1/4 in. (6 mm) OD tubing and connect the saddle valve to the inlet side of the solenoid valve (see
Fig. 6).
a. Place the brass compression nut over the
tubing.
b. Install brass insert into end of tubing.
c. Slide the plastic compression ring over the
tubing. (Discard copper compression ring provided with valve.)

NOTE: To prevent leaking, use plastic (Delrin) sleeve
rings with plastic tubing. Use copper sleeve
rings only with copper tubing.

IMPORTANT
Be sure to reconnect the water feed tube and
ensure that the tube is not pinched or kinked.
3

69-1572

HE360 HUMIDIFIER INSTALLATION KIT

Installing Sail Switch

d. Insert the tubing into the solenoid valve fitting
and support the valve while tightening the compression nut.

Adapting Switch to Air Flow Direction

NOTE: Do not over-tighten the compression nut. Moderate tightness prevents leaking.

The S688A Sail Switch is provided with two
counterbalancing springs in place as shown in Fig 8.
These springs offset the effect of gravity for air flow
direction.

e. Repeat steps a. through d. for solenoid valve
fitting.
f. Secure tubing with clamps provided.

IMPORTANT:
Do not use the sail switch with both springs
attached. Be sure to select air flow direction and
remove spring(s) not required for installation.

BRASS COMPRESSION NUT
PLASTIC
COMPRESSION RING
BRASS INSERT

M20176

UP

Fig. 6. Installing feed tubing.
4.

Connect a 1/2 in. (13 mm) drain tube to the humidifier drain fitting and run to the floor drain (see Fig.
7).
a. Slide the drain clamp over the tubing.
b. Push the tubing over the drain nipple on the
humidifier.
c. Hand-tighten the clamp around the tubing to
secure the humidifier drain.
d. Fasten the drain tubing (can use duct tape)
along the route to prevent movement and
ensure downward slope for correct drainage.

M3014

Fig. 8. Adapting sail switch to air flow direction or
mounting position.

NOTE: Cut tubing to correct length so the tubing terminates at the drain.

• Vertical downward air flow: Leave the spring in
place that is attached to the bracket marked Down.
Remove the spring that is attached to the bracket
marked Up.
• Vertical upward air flow: Leave the spring in place
that is attached to the bracket marked Up. Remove
the spring that is attached to the bracket marked
Down.
• Horizontal air flow: Remove both springs.
1.

Mount the template (provided with the sail switch)
at the desired location.

NOTE: Be sure the arrow (indicating air flow) points in
the correct direction.

2.

M20177

3.
Fig. 7. Installing drain tubing.
4.

69-1572

4

a. For horizontal mounting, level the long dimension shown on the template.
b. For vertical mounting, plumb the long dimension.
Cut the hole (indicated on the template) in the ductwork.
Center punch the screw holes indicated and drill
out with a 1/8 in. (13 mm) drill.
Attach the sail to the switch as shown in Fig 9.

HE360 HUMIDIFIER INSTALLATION KIT
4.
5.
6.
7.

Position the foam gasket on the H8908 base.
Position the base on the duct with the arrow up.
Secure the base to the duct using the four
1 in. (25 mm) mounting screws provided with humidistat.
Connect the low-voltage wires to the leads and
replace the H8908 case. See Fig. 11.

NOTE: For wall mounting instructions, see the H8908
Installation Instructions.
– LOOSEN SETSCREW
– INSERT SAIL
– TIGHTEN SETSCREW

HUMIDISTAT BASE

REAR OF HUMIDISTAT

SAIL

M20181

Fig. 9. Attaching sail to switch.
5.

Press together the sides of the wire loop. Insert the
sail into the duct. (When in the Off position, the sail
should point into the direction of airflow as shown
in Fig.10.)

WIRE SLOT

HUMIDISTAT WIRES

M20179

Fig. 11. Humidistat base and rear view.

AIRFLOW

WIRING

CAUTION
Hazardous Voltage.
Can cause personal injury or equipment
damage.
Disconnect power supply before installing or
servicing equipment.

IMPORTANT
All wiring must comply with applicable local
code, ordinances and regulations.

M20178

Wire the humidifier solenoid valve, sail switch, humidistat
and transformer.See Fig. 12.

Fig. 10. Inserting sail switch in direction of airflow.
6.
7.

Secure the switch by using the sheet metal screws
provided.
After wiring, snap on the cover.
HUMIDISTAT

INSTALLING HUMIDISTAT

OUTDOOR

Humidity Control
Régulateur d'humidité

TEMPERATURE
-30 ¡C
-20 ¡F
-25 ¡C
-10 ¡F
-20 ¡C
0 ¡F
-10 ¡C
+10 ¡F
-5 ¡C
+20 ¡F
Over 0 ¡C
Over 20 ¡F

HUMIDITY
SETTING
15%
20%
25%
30%
35%
40%

SAIL
SWITCH

Mounting Duct
1.
2.

3.

Apply the template to the duct location chosen for
the humidistat. Make sure the template is level
before drilling the holes.
Refer to the template (provided with the H8908
Humidistat Installation Instructions) to drill the control assembly opening and mounting holes for the
H8908.
Remove the H8908 case from the base.

HUMIDIFIER
SOLENOID
VALVE

BLACK
WHITE

WHITE
M20205

Fig. 12. Wiring the controls.

5

69-1572

HE360 HUMIDIFIER INSTALLATION KIT
1.
2.

TESTING HUMIDIFIER OPERATION

Run the two-strand thermostat wire from the
humidifier to the humidistat, and from the humidistat to the sail switch.
Cut lengths of thermostat wire to reach between
components, leaving adequate wire at both ends
for connections.

Checklist
❑
❑
❑
❑
❑

Humidifier is level.
Control wiring was reviewed using circuit diagram.
Humidifier is plugged in.
Feed line has no kinks.
Drain line slopes continuously down and ends at floor
drain.
❑ Water hose inside humidifier is connected to
PerfectFlow™ water distribution tray.

NOTE: Humidistat and sail switch can be wired in any
order.
3.
4.
5.

At the humidifier, connect the black and white conductors to the two yellow humidifer wires. (The red
wires from the humidifier are not used.)
At the humidistat, connect both black conductors to
the two humidistat terminals. Use a wire nut to connect together the two white conductors.
At the sail switch, connect the black and white conductors to the Com and NO sail switch terminals
(NC terminal is not used).

After installation use the following steps to check the
humidifier operation:
1. Turn on the power and the water supply
2. Turn the H8908 Humidity Control to On and turn on
the heat by setting the thermostat to 10ºF (6ºC)
above room temperature.

IMPORTANT
The furnace blower must be on to activate the
humidifier.
3.
4.
5.

69-1572

6

Make sure that water is flowing out of the drain
hose. If water does not flow, see Troubleshooting
Your Humidifier section.
Check for leaks.
Reset the thermostat and H8908 Humidity Control
to a comfortable setting for automatic operation.

HE360 HUMIDIFIER INSTALLATION KIT

TROUBLESHOOTING YOUR HUMIDIFIER (TABLE 2)
Table 2. Troubleshooting Humidifier.
Problem
Water leakage

No water to drain.

What to look for

What to do

Leaking joints.

Shut off water.
Tighten connections.

Brass tubing inserts

Verify that brass tubing inserts are
used.

Saddle valve leaking.

Verify rubber pad is installed on
saddle valve.

Electrical

Verify control circuit wiring.
Check all connections.

Humidistat

Turn humidistat up and down and
listen for contact to click.

Humidifier power

Verify that outlet has power.

Sail switch

Remove sail cover; turn on furnace
fan and listen for faint click.
Verify that sail can move freely in
duct; check sail switch instructions
to trim sail, if necessary.

Solenoid

After verifying other wiring
components, turn on furnace fan,
turn humidistat up and down, and
listen for solenoid to click.
Verify plumbing connections.
Check for kinks.

Plumbing
Saddle valve

Verify that needle pierces water
line and then backs out needle to
open valve.

Humidifier

Remove cover and verify that water
flows into distribution tray.

Drain tubing

Verify no obstructions.

7

69-1572

HE360 HUMIDIFIER INSTALLATION KIT

Home and Building Control Home and Building Control
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422

69-1572 G.H. 09-01

Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario
M1V 4Z9

Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.

www.honeywell.com/yourhome



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