Honeywell VisionPRO THM5421C1008 User manual

PRODUCT DATA
68-0287-1
VisionPRO®IAQ
Total Home Comfort System
APPLICATION
The VisionPRO®IAQ Total Home Comfort System features an
effortless, 7-Day programmable touchscreen thermostat that
provides control of temperature, humidification,
dehumidification, and ventilation.
FEATURES
• Large, clear display with backlight shows the current
and set temperature and time—even in the dark.
• Touchscreen interaction
• Real-time clock keeps time during power failures and
automatically updates to daylight savings.
• Change/check reminders let you know when to service
or replace filters.
• Various Hold options allow you to override the
program schedule, as desired.
• Controls humidification to increase homeowner
comfort while protecting woodwork and furnishings.
• Controls dehumidification using air conditioner with
high or low speed fan or a whole house dehumidifier.
• Controls ventilation with other HRV, ERV, or Freshair
damper. Vent on demand and automatically using
patented advanced ventilation control.
• Advanced heat pump control featuring balance point
plus 2°F droop to increase homeowner comfort.
Contents
Application/Features.......................................................... 1
Specifications/Ordering Information .................................. 2
Installation ........................................................................ 4
Wiring ............................................................................... 5
Power the Thermostat ...................................................... 8
Installer Setup .................................................................. 12
Operation .......................................................................... 19
Programming .................................................................... 25
Troubleshooting ................................................................ 35

VISIONPRO®IAQ TOTAL HOME COMFORT SYSTEM
68-0287—1 2
SPECIFICATIONS
Thermostat Description:
Electrical Ratings:
Temperature Setting Range:
Heating: 40°F to 90°F(4.5°C to 32°C).
Cooling: 50°F to 99°F (10°C to 37°C).
Operating Ambient Temperature:
VisionPRO®IAQ Thermostats: 0°F to 120°F
(-18°C to 49°C).
THM5421C1008: -30°F to 150°F (-34°C to 66°C).
C7089U1006: -40°F to 120°F (-40°C to 49°C).
C7189U1005: 45°F to 88°F (7°C to 32°C).
Shipping Temperature:
VisionPRO®IAQ Thermostats: -30°F to 150°F
(-34°C to 66°C).
THM5421C1008: -30°F to 150°F (-34°C to 66°C).
Operating Relative Humidity (Non-condensing):
VisionPRO®IAQ Thermostats: 5% to 90%.
THM5421C1008: 5% to 90%.
C7089U1006: 5% to 95%.
C7189U1005: 5% to 95%.
Humidification Setting Range:
Heating: 10% to 60% RH.
Dehumidification Setting Range:
Heating: 40% to 80% RH.
Humidity Display Range:
0% to 99%.
Cycle Rates (at 50% Load):
Heating: Selectable 1 - 12 cycles per hour.
Cooling: Selectable 1 - 6 cycles per hour.
Finish:
VisionPRO®IAQ Thermostats: Premier White®color.
THM5421C1008: Premier White®color.
C7189U1005 Wall Mount Remote Indoor Sensor: Premier
White®color.
Clock Accuracy: +/- 1 minute per year.
Resistance Characteristics of Remote Sensors:
C7089U1006 Outdoor Sensor: Negative temperature coeffi-
cient (NTC) means that resistance decreases as the tem-
perature increases. See Table 12 in the Operation section
for sensor resistance characteristics.
C7189U1005 Remote Indoor Sensor: Negative temperature
coefficient (NTC), means that resistance decreases as the
temperature increases. See Table 13 in the Operation sec-
tion for sensor resistance characteristics.
Cool Indication:
VisionPRO®IAQ Comfort Systems show “Cool On” on the
thermostat screen when Cool is activated.
Heat Indication:
VisionPRO®IAQ Comfort Systems show “Heat On” on the
thermostat screen when Heat is activated.
Auxiliary Heat Indication:
VisionPRO®IAQ Comfort Systems show “Aux. Heat On” on
the thermostat screen when Auxiliary Heat is activated.
Calibration:
C7089U1006, C7189U1005 and VisionPRO
®
IAQ Comfort Sys-
tems are factory-calibrated and require no field calibration.
Interstage Differential:
VisionPRO®IAQ Comfort Systems operate with droopless
control. Once the thermostat senses that 1st stage is run-
ning at 90% capacity, the thermostat energizes 2nd stage.
Mounting Means:
VisionPRO®IAQ Comfort System: Thermostat mounts directly
on the wall in the living space using mounting screws and
anchors provided. Fits a vertical or horizontal 2 x 4 in. junc-
tion box.
THM5421C1008 Equipment Interface Module (EIM) mounts on
HVAC equipment or on a wall in the equipment room.
C7089U1006 Outdoor Sensor: Mounts outside of living space
with mounting clip and screws provided.
C7189U1005 Remote Indoor Sensor: Mounts directly on the
wall using mounting screws and anchors provided.
Cover Plate:
32003796-001 Cover Plate is used to cover marks left on the
wall by the old thermostat.
Dimensions:
VisionPRO®IAQ Comfort System: see Fig. 1.
THM5421C1008: see Fig. 2
C7089U1006 Outdoor Sensor Mounting Clip: see Fig. 3.
32003796-001 Cover Plate: see Fig. 4.
C7189U1005 Remote Indoor Sensor: see Fig. 5.
Feature Description
Powering method •Common wire only
System types (up to
4 heat/2 cool)
•Gas, oil or electric heat with air
conditioning
•Warm air, hot water, high-efficiency
furnaces, heat pumps, steam and
gravity
•Heat only with fan
•Cool only
Changeover Manual or Auto changeover selectable
System setting Heat-Off-Cool-Auto
Fan setting Auto-On-Circ
Terminal Voltage (50/60 Hz) Running Current
W1 Heating 20 - 30 Vac .02 - 1.0A
W2/Aux Heating 20 - 30 Vac .02 - 1.0A
W3/Aux2 Heating 20 - 30 Vac .02 - 1.0A
Y Cooling 20 - 30 Vac .02 - 1.0A
Y2 Cooling 20 - 30 Vac .02 - 1.0A
G Fan 20 - 30 Vac .02 - 1.0A

VISIONPRO®IAQ TOTAL HOME COMFORT SYSTEM
368-0287—1
Fig. 1. VisionPRO®IAQ Comfort System
dimensions in in. (mm).
Fig. 2. THM5421C1008 Equipment Interface Module
dimensions in in. (mm).
Fig. 3. C7089U1006 Outdoor Sensor Mounting Clip
dimensions in in. (mm).
Fig. 4. 32003796-001 Cover Plate dimensions in in. (mm).
M23539
6 (152)
THERMOSTAT
4-9/16
(116)
3-3/8 (86)
WALLPLATE
3-3/8 (86)
THERMOSTAT
AND WALLPLATE
1-3/8 (35)
7-9/32
(185)
1-21/64
(34)
6-57/64
(175)
4-35/64
(116)
M23544
FRONT VIEW SIDE VIEW
M4488
1-1/2 (38)
7-7/8 (200)
3-5/16 (84)
3-5/16
(84)
M22139
5-1/2
(140)

VISIONPRO®IAQ TOTAL HOME COMFORT SYSTEM
68-0287—1 4
Fig. 5. C7189U1005 Remote Indoor Sensor dimensions in in. (mm).
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow the
instructions can damage the product or cause a hazard-
ous condition.
2. Check the ratings given in the instructions to make sure
the product is suitable for your application.
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions to
verify the product operation.
Selecting Location
Install the thermostat about 5 ft. (1.5m) above the floor in an area
with good air circulation at average temperature. See Fig. 6.
Fig. 6. Selecting thermostat location.
Do not install the thermostat where it can be affected by:
— Drafts or dead spots behind doors and in corners.
— Hot or cold air from ducts.
— Radiant heat from sun or appliances.
— Concealed pipes and chimneys.
— Unheated (uncooled) areas such as an outside wall behind
the thermostat.
Installing Wallplate
CAUTION
Electrical Hazard.
Can cause electrical shock or equipment damage.
Disconnect power before wiring.
The thermostat can be mounted horizontally on the wall or on a
4 in. x 2 in. (101.6 mm x 50.8 mm) wiring box.
1. Position and level the wallplate (for appearance only).
2. Use a pencil to mark the mounting holes.
3. Remove the wallplate from the wall and, if drywall, drill
two 3/16-in. holes in the wall, as marked. For firmer
material such as plaster, drill two 7/32-in. holes. Gently
tap anchors (provided) into the drilled holes until flush
with the wall.
M23522
2-9/32
(58)
1-1/2 (38)
2-9/32
(58)
1-1/2 (38)
45/64
(18)
FRONT VIEW SIDE VIEW FRONT VIEW (COVER OFF)
5 FEET
[1.5 METERS]
YES NO
NO
NO
M19925