Read these instructions carefully, failure to follow them could damage the product and
cause a hazardous situation.
Check the ratings given in the instructions and on the product to make sure the
product is suitable for your application
Installer must be a trained, experienced service technician.
After installation is complete, check out product operation as provided in these
instructions.
Cautions
Electrical shock or equipment damage may occur.
Disconnect power supply before beginning installation.
2
Duct Installation (recommended) OR
M34567
1. Choose a location on the RETURN
duct.
ALTERNATE
RETURN
AIR
LOCATION
RETURN
AIR
Remote Mount Installation
1. Choose a location in the living area.
NOTE: Select a location clear of drafts
or excessive humidity. Avoid mounting
near doors or windows, or in bathrooms
or kitchens.
6 IN (152 MM)
MINIMUM
BEST
LOCATION
RETURN
AIR DUCT
15 IN (381 MM)
MINIMUM
M34579
Warning: Product must be mounted
on the RETURN side of the duct for
proper RH% sensing.
NO
YES
NO
3
Duct-Mount Installation
2. Separate wallplate from humidistat.
05,,(%2%
2EPLACE"ATT
)NSIDE
(5-)$)49"//34
!UTO
Caution: Electrical Hazard
Can cause electrical shock or equipment damage.
Disconnect power before beginning installation.
,IGHT
3YSTEM
. EXT!UTO
3ETTING
-
3. Mark the duct-tube hole.
M34580
Hold the wallplate up to the desired
location on the duct and make a mark
inside the duct tube hole.
4
4. Drill the duct-tube hole.
M34581
Find your mark and drill a 1/2 in. hole in
the duct. This is where the duct tube will
be inserted to capture air.
5. Insert the duct tube.
Insert the duct tube through
the wallplate before securing
to the duct.
M34671
5
6. Secure the wallplate.
7. Run wires through the back plate.
RUN WIRES
THROUGH THE
C
R
U
U
S
S
TOP OR BOTTOM
CHANNEL
M34610
Secure the wallplate to the duct with
sheet metal screws (provided).
M34582
Run wires through the top or bottom
channel on the back plate when ductmounted. If installing like a thermostat on
a wall, run the wires through the back.
6
Wiring the Humidistat
This humidity control is wired the same way a manual humidistat (H8908) is wired. The
only difference is that you also wire in power (24 VAC) and an outdoor sensor.
24 VAC (CONSTANT)
TERMINAL DESIGNATION
C 24 VAC POWER FROM EQUIPMENT
R 24 VAC POWER FROM EQUIPMENT
U HUMIDIFIER/DEHUMIDIFIER
U HUMIDIFIER/DEHUMIDIFIER
S OUTDOOR SENSOR
S OUTDOOR SENSOR
NOTES: C AND R MUST BE CONSTANT 24VAC! RECOMMENDED TO WIRE TO
FURNACE/AIR HANDLER CONTROL BOARD.
DO NOT WIRE C AND R TO HUMIDIFIER TRANSFORMER!
TO HUMIDIFIER
OR DEHUMIDIFIER
OUTDOOR
TEMPERATURE
SENSOR
7
C
R
U
U
S
S
M34569
Wiring HumidiPRO with Fan Interlock
M34570
FAN CONTROL
L1
(HOT)
POWER
SUPPLY
L2
1
12PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
24 VAC WIRING.
FURNACE
FAN
MOTOR
TRANSFORMER
8
C
24 VAC (CONSTANT)
R
U
U
S
OUTDOOR SENSOR
S
2
HUMIDIFIER
Wiring HumidiPRO with Fan Interlock for 2 Speed Motor
C
24 VAC (CONSTANT)
R
U
U
S
OUTDOOR SENSOR
S
HUMIDIFIER
M34571
L1
(HOT)
L2
FAN CONTROL
POWER
SUPPLY
1
H
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
2
24 VAC WIRING.
DPST
SWITCHING
RELAY
L
2-SPEED
FAN MOTOR
C
TRANSFORMER
2
9
Wiring HumidiPRO with Current Sensing Relay
M34572
C
24 VAC (CONSTANT)
R
U
U
S
OUTDOOR SENSOR
S
CURRENT
SENSING
RELAY
1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
LO
HI
C
10
L2
L1
(HOT)
1
HUMIDIFIER
Wiring HumidiPRO with Sail/Pressure Switch
C
24 VAC (CONSTANT)
R
U
AIR PRESSURE
SWITCH/SAIL
SWITCH
1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
U
S
OUTDOOR SENSOR
S
1
L1
L2
(HOT)
HUMIDIFIER
11
M34573
Wiring HumidiPRO to FORCE FAN ON (Basic Humidifier)
R
C
W
Y
G
DPST RELAY
1
4
NOTES: USE DPST RELAY FOR HUMIDITY ON DEMAND
WITH A BASIC HUMIDIFIER.
HUMIDIFIER MUST BE PLUMBED TO HOT WATER
WHEN FORCING FAN.
HONEYWELL ADVANCED HUMIDIFIERS DO NOT
NEED A RELAY TO FORCE FAN.
3
2
6
5
C
24 VAC (CONSTANT)
R
U
U
S
OUTDOOR SENSOR
S
12
HUMIDIFIER
L2
L1
(HOT)
M34574
1
Wiring HumidiPRO to TrueEASE Advanced Humidifier
with Fan Interlock (HE150/HE250/HE300)
HumidiPRO
HVAC
GYWR C
C
R
U
U
S
OUTDOOR
S
SENSOR
THERMOSTAT
G “FAN”
24VAC
CONSTANT
POWER IN
NOT REQUIRED
ON HE300
NOTE: SEE TrueEASE INSTALL GUIDE FOR DETAILED WIRING INFORMATION.
13
M34577
Wiring HumidiPRO to TrueSTEAM Advanced Humidifier
HumidiPRO
C
R
U
U
S
OUTDOOR SENSOR
S
HVAC
R
C
W
Y
G
THERMOSTAT
G “FAN”
NOTE: SEE TrueSTEAM INSTALL GUIDE FOR DETAILED WIRING INFORMATION.
24V
24V
HUM
HUM
C
GT
R
RT
GF
EXT
2
3
1
ON
OFF
AFS MONITOR RECOMMENDED
14
645
M34576
Wiring HumidiPRO to Dehumidifier
RFloat DHUMFanC
15
C
R
U
U
S
S
24 VAC
(CONSTANT)
M34595
Mounting the Outdoor Sensor
(Not required if window protection isn’t needed)
Location
Mount the sensor where:
• it cannot be tampered with.
• there is good air circulation.
• surface is flat.
• wire distance between sensor and humidistat is less than 200 feet.
• it can measure true outdoor ambient temperature.
Do NOT mount the sensor:
• in direct sunlight.
• where snow, ice or debris can cover it.
• where hot or cold air blows on the sensor. (For example, a discharge line from
an outdoor compressor unit, vent or fan can cause inaccurate temperature
readings.)
16
Steps to mount the sensor
1. Remove the sensor from the mounting
clip.
2. Mark the area on the location selected
for mounting the sensor mounting clip.
3. Mount the clip. Image on right shows
typical locations for outdoor sensor.
M7514A
17
Wiring the sensor
Caution
Electrical Interference (Noise) Hazard. Can cause erratic system operation.
• Keep wiring at least one foot away from large inductive loads such as motors,
line starters, lighting ballasts and large power distribution panels.
Use shielded cable to reduce interference when rerouting is not possible.
• Be sure wires have a cable separate from the thermostat cable.
• Do not route temperature sensor wiring with building power wiring, next to control
contactors or near light dimming circuits, electric motors or welding equipment.
• Avoid poor wiring connections.
• Avoid intermittent or missing building earth ground.
18
Caution
Electrical Shock Hazard. Can cause
electrical shock or equipment damage.
Disconnect power supply before connecting wiring.
Wiring must comply with applicable
codes, ordinances and regulations:
1. Wire the C7089 Outdoor Sensor to the
S terminals on the humidity control. If
leadwire provided with C7089 is not
long enough (60 in.), run a cable to a
hole at C7089 location.
• Using color-coded, 18-gauge,
shielded thermostat wire is
recommended. For example of
general wiring of C7089, see image
at right.
• Pigtail wiring can be used.
2. Mount C7089 in its mounting clip.
3. Plug wiring hole using nonhardening
caulk or putty.
1
C7089
C
R
U
U
S
S
1
USE APPROPRIATE MOUNTING MEANS FOR THE
TYPE OF STRUCTURE.
2
PLUG WIRING HOLE WITH NON-HARDENING
CAULK OR PUTTY.
19
WIRING HOLE
THROUGH
STRUCTURE
M34611
2
Mount Humidity
Control
Align the 4 tabs on the
wallplate with the slots on the
back of the control, then push
gently until the control snaps
in place.
SLOTS ON
BACK OF
HumidiPRO
WALLPLATE
TABS
TABS
M34583
20
Checkout
Allow C7089B Outdoor Sensor to absorb
outdoor air for a minimum of twenty
minutes before taking a reading.
With an accurate thermometer (±1°F
[0.5°C]), measure the temperature at
the sensor location, allowing time for the
thermometer to stabilize before reading.
Then verify the sensor accuracy by
going into installer Test #20. This will
show you the outdoor temperature.
Calibration
The C7089 Outdoor Sensor is calibrated
at the factory. However, you can offset
the outdoor sensor reading using
Function 35 in Installer Setup.
21
You’ve just installed your Humidity Controller!
This Humidity Control has been preprogrammed to the ideal settings for most homes.
If you installed this control with an outdoor sensor, the control will operate in
AUTOMATIC MODE, which automatically adjusts humidity to help prevent window
condensation.
If you installed this control without an outdoor sensor, the control will operate in
MANUAL MODE, giving the homeowner simple, direct control of their humidifier (RH%
Setting Only).
Advanced Installer Setup
See next page to customize feature operation.
Installer System Test
If Advanced Installer Setup is not required, skip to “Installer System Test/Checkout” on
page 27.
22
Advanced Installer Setup
Honeywell has already programmed this control to work properly in most applications.
However, you can adjust the advanced settings by following the steps below.
To begin, press and hold the p and
LIGHT buttons until the display changes.
1
DoneNext
Press p or q to change settings.
Press NEXT to advance to the next
function.
Press DONE to exit and save settings.
23
1
M29387A
Function Number
1 Syste m Type
4 Control Mode
Automatic Mode is Default when Outdoor Sensor Detected Manual Mode is Default when NO Outdoor Sensor Detected
5 Automatic Mode RH% (Hum) This is the humidity setpoint (RH%) the control will operate to. The homeowner does not change this and will only need to set the appropriate window protection setting.
11Automatic Mode Humidity Boost
Increases Preset RH% (#5) when user sets window protection
to 11.
17 Automatic Mode High Temp Shut-Off Turns humidifier OFF when Outdoor Temperature is greater
than selected setting.
19High Hum Limit
24
Setting
Displayed Description
1Humidifier
2Dehumidifier
1Automatic
2Manual
Range: 20%-60%
Default = 35%
0OFF
5%5%
10%10%
Range: 40° - 90°
0 = OFF
Default = 65°
Range: 10% - 90%
Default = 60%
Function Number
20 Low Hum Limit
21 High Dehum Limit
23 Low Dehum Limit
25 Dehumidifier Compressor Lockout
30 Humidity Sensing Calibration
This feature will offset the sensed indoor humidity. 35 Outdoor Temperature Sensor Calibration
This feature will offset the sensed outdoor temperature if
*Black Numbers show highest humidity allowed when Default RH% (35%) is Selected.
Note: Smaller grey numbers show highest humidity allowed when Maximum RH%
(60%) is selected.
26
Installer System Test/Checkout
Test numberSystem status
10
To begin, press and hold the p and
q buttons until the display changes.
Function Number
10 System Test
20 View Outdoor TemperatureShows Outdoor Temperature
Press p / q to turn system on/off.
Press NEXT to advance to next test.
Press DONE to terminate system test.
Setting
NumberDescription
0OFF
1ON
27
0
M29388A
Installer System Test/Checkout (continued)
NOTE: Most humidifiers require airflow in the system to operate. Make sure to turn on
the system fan when testing humidifier operation.
Caution: If running a dehumidifier, compressor protection is bypassed
during testing; avoid cycling the compressor too quickly.
Note: Some dehumidifiers may already have built in compressor protection.
Specifications
Humidity Ranges:
Humidify:
• Default: 10% to 60%
• Total Range Available: 10% to 90%
Dehumidify:
• Default: 40% to 80%
• Total Range Available: 10% to 90%
Operating Ambient Temperature
• 32° to 120°F (0° to 48.9°C)
Operating Relative Humidity
• 5% to 90% (non-condensing)
28
Troubleshooting
If you have difficulty with your humidity control, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is
blank
• Check circuit breaker and reset if necessary.
• Check for 24VAC between R and C at the wall plate.
• Make sure power switch at heating and cooling system is on.
• Make sure furnace door is closed securely.
Humidity
settings do
not change
Make sure the humidity is set to an acceptable range:
• Check current range stop settings in Installer Setup.
• Auto Mode: 1–10 (up to 11 if Humidity Boost is enabled)
• Manual Mode: 20%–60%
• Dehumidification Mode: 40%–80%
29
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