HE360 Humidifier and
Installation Kit
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INSTALLATION INSTRUCTIONS |
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WELCOME |
Required Accessories (Included) |
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To the comfortable world of humidified air. When you use |
Required Tools |
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your Honeywell humidifier, notice that your skin is not as |
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dry, and that your scratchy throat and irritated nasal |
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Table 1. Required Accessories. |
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passages that aggravate allergies and asthma are |
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steadily improving. |
Quantity |
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Accessory (Item Quantity) |
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You have also taken the first step in reducing the zapping |
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Humidifier Parts and Accessories |
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you create when you walk on your carpet and then touch |
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your TV, computer, metal door knob or your pet. Your |
20 ft |
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18 gauge, two-strand thermostat wire |
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furniture and woodwork are also benefitting from the |
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(6.2m) |
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difference that humidified air makes. |
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Congratulations! You have just made a great investment |
20 ft |
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1/4 in. (6.35 mm) OD feed water tubing |
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(6.2m) |
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in improving the comfort of your home. |
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10 ft |
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1/2 in (12.7 mm) ID drain tubing |
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APPLICATION |
(3.1m) |
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1 bag |
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Connecting and mounting hardware: |
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This kit contains your new Honeywell HE360 Humidifier, |
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Wire nuts (4) |
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No. 8 sheet metal screws (18) |
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H8908 Humidistat and all the accessories required for |
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Drain tube clamp |
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installation. |
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Feed tube mounting clamps (6) |
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INSTALLATION |
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Brass inserts (2) |
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Plastic compression rings (2) |
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1 |
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H8908 Humidistat |
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Preparing for the Installation |
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1 bag |
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Saddle Valve Assembly: |
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Be sure to identify all the required (Table 1) accessories |
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Saddle valve and top clamp (1) |
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(included) and make sure the appropriate tools are |
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Threaded bottom clamp (1) |
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available before beginning the installation. |
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Bolts (2) |
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Rubber gasket (1) |
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Brass insert (1) |
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Plastic bushing (1) |
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69-2517EF-01
HE360 HUMIDIFIER AND INSTALLATION KIT
Table 1. Required Accessories.
Quantity |
Accessory (Item Quantity) |
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Air Pressure Switch and Accessories
2 Black rubber gasket
M27302
2 Tubing Fitting Elbow
M27323
10 ft |
Tubing, 1/4 in. ID |
(3.1m) |
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1Differential Pressure Switch
2Screws, #8 x 3/4 in. sheet metal
2Terminal Adaptor
Tools required for installation include:
•Tin snip.
•Screwdriver.
•Adjustable or open-end wrench.
•Drill, punch or awl.
•Level.
•3/4-in. Sheet Metal Drill Bit
Determining Best Location for Humidifier
CAUTION
Temperature and Static Pressure Hazard. Can cause property or equipment damage.
Locate humidifier where ambient temperature is between 32°F (0°C) and 160°F (71°C).
Do not install humidifier where freezing temperatures could occur.
Be sure supply plenum static pressure is no greater than 0.4 in. wc and water pressure is no greater than 124 psi.
•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.
•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.
RETURN
HORIZONTAL
HIGHBOY
RETURN
DOWN
FLO
BOY
LOW
M12808B
Fig. 1. Typical humidifier installation locations.
Selecting Water Supply Location
•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 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.
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.)
69-2517EF—01 |
2 |
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ALTERNATE LOCATION |
RETURN |
RETURN |
AIR |
AIR |
6 in. (152 mm)
MINIMUM
15 in. (381 mm) MINIMUM
BEST
LOCATION
RETURN AIR DUCT 
M12831A
Fig. 2. Selecting duct location for humidistat.
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.
Installing the Humidifier
WARNING
Hazardous Voltage
Can cause personal injury or equipment damage.
Do not cut or drill into any air conditioning or electrical accessory.
CAUTION
Sharp Edges Installation Hazard.
Can cause personal injury.
Wear gloves and safety glasses.
1.Turn off power to the air handing system at the circuit breaker.
2.Draw a level line on the plenum in the location chosen for the humidifier. (Leveling assures optimal humidifier performance.)
3.Locate the template (form number 69-1651 included in the box).
HE360 HUMIDIFIER AND INSTALLATION KIT
4.Tape the template in position and trace around the template.
5.Remove the template and carefully cut the rectangular opening.
6.Disassemble the humidifier; remove the cover and take out the humidifier pad assembly. See Fig. 3.
FEED TUBE NOZZLE
WATER
DISTRIBUTION TRAY
HUMIDIFIER
PAD ASSEMBLY
HUMIDIFIER
HOUSING
COVER
ASSEMBLY
M12809
Fig. 3. Disassembling humidifier.
7. Position the securing clips as shown in Fig. 4.
CLIP |
CLIP |
M12813
Fig. 4. Position securing clips.
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.
5.
9.Push in securing clips until completely seated.
10.Drill holes and install the three sheet metal screws on the top of the humidifier housing. Secure the housing with the three remaining screws.
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69-2517EF—01 |
HE360 HUMIDIFIER AND INSTALLATION KIT
SHEET METAL |
LEVEL |
DUCT |
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SCREWS (4) |
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NOTE: The saddle valve is not designed to regulate water flow. The valve is either open or closed.
IMPORTANT
To prevent debris from clogging the solenoid inline filter, be sure to install the saddle valve handle pointing toward the ceiling.
OPENING
TO AIR DUCT
BRASS COMPRESSION NUT
PLASTIC
COMPRESSION RING
BRASS INSERT
M20176
PLASTIC
TABS (2)
DRAIN TUBING |
M20204 |
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Fig. 5. Installing humidifier on duct.
Fig. 6. Installing feed tubing.
4.Use 1/4-in. (6mm) OD tubing and connect the saddle valve to the inlet side of the solenoid valve on the humidifier (See Fig. 9).
5.Repeat step 2, a - d for saddle valve fitting.
11.Reinstall the humidifier pad assembly in the humidiNOTE: Cut tubing to correct length so the tubing termi-
fier housing.
IMPORTANT
Be sure to reconnect the water feed tube and ensure that the tube is not pinched or kinked.
12.Hinge the cover in place and secure with the thumbscrew located at the bottom of the cover.
Connecting the Plumbing
1.Shut off the water.
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.First, connect 1/4-in. line to the humidifier’s solenoid valve, located at the bottom of the humidifier.
a.Remove the compression nut.
b.Discard the brass ring, replacing it with the plastic ring.
c.Install the brass insert into the end of the tubing.
d.Insert the tubing into the solenoid valve fitting and support the valve while tightening the compression nut.
NOTE: Do not over-tighten the compression nut. Moderate tightness prevents leaking.
3.Use the saddle valve (included) to tap into the water supply line at the location selected. See Fig. 8. If tapping into galvanized pipe, drain line and pre-drill 3/17-in. tap for saddle valve.
nates at the drain.
M20177
Fig. 7. Installing the drain tubing.
Air Pressure Switch Installation
IMPORTANT
Do not install the switch in an area where temperature exceeds rating of -40F to 190F (-40C to 88C)
1.Disconnect power from the humidifier before installing.
2.Mount the switch vertically with pressure connectors facing down, using provided self-tapping screws to secure the switch to the duct.
69-2517EF—01 |
4 |
IMPORTANT
Calibration accuracy requires that the switch be mounted vertically (as pictured in Fig. 8).
HE360 HUMIDIFIER AND INSTALLATION KIT
4.Cut a 3/4-in. diameter hole in the duct within 10 feet of the switch to ensure the provided tubing reaches the pressure tap elbow.
5.Insert the black rubber gasket into the duct hole.
6.Connect the tubing to the tubing fitting elbow and insert the tubing fitting elbow into the black rubber gasket.
7.Connect the other end of the tubing to the applicable pressure connection on the switch.
e.Black connection if installed on the supply
f.Grey connection if installed on the return
g.Both grey and black if installed on both
IMPORTANT
With low-speed airflow or variable speed systems it is recommended to run tubing to both the supply and return ducts.
M27300
Fig. 8. Pressure switch—oriented vertically.
3.The return duct is recommended, however the switch can also be mounted to the supply duct.
A
B
SUPPLY DUCT INSTALL - AIR LINE ONLY TO TAP A, CONNECTED TO THE + PORT ON THE AIR FLOW SWITCH
RETURN DUCT INSTALL - AIR LINE ONLY TO TAP B, CONNECTED TO THE – PORT ON THE AIR FLOW SWITCH
SUPPLY/RETURN DUCT INSTALL - AIR LINE CONNECTED TO BOTH THE + AND – PORTS ON THE AIR FLOW SWITCH
M27303
Fig. 9. Mounting the pressure switch.
INSIDE
OF DUCT
1
1CONNECT TUBING TO + CONNECTION IF PRESSURE TAP IS MOUNTED TO SUPPLY DUCT. CONNECT TO – IF PRESSURE
TAP IS MOUNTED TO RETURN DUCT. |
M27304 |
Fig. 10. Install tubing.
8.You may cut the tubing to fit the connection length between the tubing fitting elbow and switch. It is also recommended to secure the hose to existing structures to avoid accidental disconnection.
Installing the Humidistat
Installing on Mounting Duct
1.Apply the template to the duct location chosen for the humidistat. Make sure the template is level before drilling the holes.
2.Refer to the template (provided with the H8908 Humidistat Installation Instructions) to drill the control assembly opening and mounting holes for the H8908.
3.Remove the H8908 case from the base.
4.Position the foam gasket on the H8908 base.
5.Position the base on the duct with the arrow up.
6.Secure the base to the duct using the four
1 in. (25 mm) mounting screws provided with humidistat.
7.Connect the low-voltage wires to the leads and replace the H8908 case. See Fig. 12.
NOTE: For wall mounting instructions, see the H8908 Installation Instructions.
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69-2517EF—01 |
HE360 HUMIDIFIER AND INSTALLATION KIT
HUMIDISTAT BASE |
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REAR OF HUMIDISTAT |
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WIRE SLOT |
HUMIDISTAT WIRES |
M20179 |
Fig. 11. Humidistat base and rear view.
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.
Wire the humidifier solenoid valve, pressure switch, humidistat and transformer.See Fig. 13.
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HUMIDISTAT |
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AIR PRESSURE |
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SWITCH |
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HUMIDIFIER |
BLACK |
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SOLENOID |
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WHITE |
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VALVE |
M28969
Fig. 12. Wiring the controls.
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ATTACH ADAPTER |
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WIRE TO HUMIDIFIER |
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C TERMINAL |
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COMMON (C) TERMINAL |
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C |
1 |
ASSEMBLED |
MEXICOIN |
1/4 (6) X 1/32 (1) THICK |
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1 |
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QUICK CONNECT |
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2 |
3 |
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2 |
3 |
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NORMALLY OPEN (NO) |
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2 |
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3 |
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TERMINAL 1/4 (6) X 1/32 (1) |
NO |
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NC |
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THICK QUICK CONNECT |
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+ PI |
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WIRE TO HVAC |
ATTACH |
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ADAPTOR |
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C TERMINAL |
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M27398A |
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Fig. 13. Close-up of pressure switch wiring.
1.Run the two-strand thermostat wire from the humidifier to the humidistat, and from the humidistat to the pressure switch and back to complete the wiring loop to the humidifier. This is illustrated in Fig. 12.
2.Cut lengths of thermostat wire to reach between components, leaving adequate wire at both ends for connections.
NOTE: Humidistat and pressure switch can be wired in any order.
3.At the humidifier, connect the black and white conductors to the two yellow humidifier wires. (The red wires from the humidifier are not used.)
4.At the humidistat, connect both black conductors to the two humidistat terminals. Use a wire nut to connect together the two white conductors.
TESTING HUMIDIFIER
OPERATION
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.
After installation use the following steps to check the humidifier operation:
1.Turn on the power and the water supply
2.Turn the H8908 Humidistat 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.Make sure that water is flowing out of the drain hose. If water does not flow, see Troubleshooting Your Humidifier section.
4.Check for leaks.
5.Reset the thermostat and H8908 Humidistat to a comfortable setting for automatic operation.
69-2517EF—01 |
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