Honeywell THM5421C1008 Manual - Free PDF Download

Page 2 - SPECIFICATIONS

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 4...

Page 3 - IAQ Comfort System; FRONT VIEW

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 3 68-0287—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 dimens...

Page 4 - INSTALLATION; CAUTION; Can cause electrical shock or equipment damage.

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. Chec...

Page 5 - Installing Equipment Interface Module (EIM); Communication LED; WIRING

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 5 68-0287—1 4. Position the wallplate over the holes, pulling wires through the wiring opening. See Fig. 7. 5. Insert the mounting screws into the holes and tighten. Fig. 7. Mounting wallplate. Installing Equipment Interface Module (EIM) CAUTION Electrical H...

Page 6 - and cool system with single transformer

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 6 Fig. 9. Inserting wires in terminal block. IMPORTANT Use 18-gauge thermostat wire. NOTES: 1. When used in a single-transformer system, leave the metal jumper wires in place between R and Rc, and Rc and Rh. If used on a two-transformer sys- tem, r...

Page 7 - Fig. 12. Typical hookup of conventional system with up to; dler for dehumidification with air conditioner and a; Fig. 17. Typical hookup of powered whole house; KEY

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 7 68-0287—1 Fig. 12. Typical hookup of conventional system with up to three-stage heat and two-stage cool with one transformer (3H/2C, 2H/2C, 2H/1C, 1H/2C, 1H/1C conventional). Fig. 13. Typical hookup of heat pump system (up to 4H/2C heat pump). Fig. 14. Typ...

Page 8 - Fig. 20. Hookup of Honeywell DH90 with fresh air intake for; POWER THE THERMOSTAT; Wiring 24 Vac Common

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 8 Fig. 18. Typical hookup of fresh air damper. NOTE: Use this hookup for ventilation using a fresh air damper. Fig. 19. Typical hookup of powered ventilation. Fig. 20. Hookup of Honeywell DH90 with fresh air intake for ventilation. POWER THE THERMO...

Page 9 - Can cause erratic system operation.; IMPORTANT; Electrical Shock Hazard.

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 9 68-0287—1 Locate and Mount C7089U1006 Outdoor Temperature Sensor (Optional) Mount the sensor where (see Fig. 23): • cannot tamper with settings. • there is good air circulation. • it can measure true outdoor ambient temperature. • surface is flat. • wire d...

Page 11 - ONE REMOTE INDOOR SENSOR INSTALLED (OPTIONAL); Install Discharge Air Temperature Sensor

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 11 68-0287—1 Fig. 26. Wiring a single C7189U1005 Indoor Sensor. Fig. 27. Wiring Multiple C7189U1005 Sensors. If a remote indoor temperature sensor is installed, the thermostat has several options for displaying the current indoor temperature. This is configu...

Page 12 - INSTALLER SETUP; Using Auto Discover

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 12 INSTALLER SETUP Auto Discover is available when the TH9421C thermostat is connected to an EIM. The EIM communicates information to the thermostat. Thermostat settings can be specified using the up and down arrow keys on the screen or set to Auto...

Page 18 - INSTALLER SYSTEM TEST; Equipment Damage Hazard.; How to Use the Installer System Test; Fig. 28. Review thermostat buttons used during Installer

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 18 INSTALLER SYSTEM TEST Use the Installer System Test to test the heating, cooling and fan (and emergency heat for heat pump systems). CAUTION Equipment Damage Hazard. Minimum compressor off time is bypassed during Installer System Test Avoid cycl...

Page 19 - Installer System Tests; OPERATION; Thermostat Keys

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 19 68-0287—1 Installer System Tests When VisionPRO® IAQ is used in a zoning system you must exit the installer test on one thermostat before entering the installer test on another thermostat. OPERATION Thermostat Keys Thermostat Display Table 4. Installer Sy...

Page 20 - System and Fan Settings; System; Control Humidification Level; WITH FROST PROTECTION; Control Dehumidification Level; With Air Conditioner

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 20 System and Fan Settings System The System key selections vary based on your heating and/or cooling system type. Heat — Thermostat controls the heating system. Off — Both heating and cooling systems are off. Cool — Thermostat controls the cooling...

Page 21 - DEHUMIDIFICATION DROOP CONTROL; With Whole House Dehumidifier; Ventilation Control; AUTOMATIC; HEAT PUMP OPERATION; Heat Pump LED Indication

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 21 68-0287—1 DEHUMIDIFICATION DROOP CONTROL In extremely high humidity conditions, the thermostat keeps the air conditioner running (energizing Y/Y2 and G) for up to 3°F below the temperature setpoint. It does this while trying to achieve the desired humidit...

Page 22 - Heat Pump Emergency Heat LED Indication; AUXILIARY LOCKOUT FOR ELECTRIC HEAT BACKUP; Operation in Heat Mode

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 22 Heat Pump Emergency Heat LED Indication The thermostat uses a red LED indicator that lights when the thermostat is in the Emergency Heat mode. The LED is located in the upper right corner of the thermostat. It is visible only when on. Heat Pump ...

Page 23 - Operation in Emergency Heat Mode

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 23 68-0287—1 Fig. 32. Heat Pump Operation with Lockout Temperatures Set. When the outdoor temperature is between the two temperatures, both the Compressor and Auxiliary Heat operate. Operation in Emergency Heat Mode Once the thermostat is placed into the Eme...

Page 24 - Multi-Stage Heat and Cool Control; User Setup

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 24 a Humidification only operates in heating or when last call was for heating. b Dehumidification only operates in cooling or when last call was for cooling. c Must be set up in installer setup (ISU 379) for dehumidification with air conditioning....

Page 25 - PROGRAMMING; Preprogrammed Energy Star Settings

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 25 68-0287—1 4. See the screen below to review how the thermostat keys are used during the User Setup. See Table 8 for the User Setup numbers and settings. 5. Press the Done key to exit the User Setup screen. PROGRAMMING Preprogrammed Energy Star Settings Ta...

Page 26 - Sleep; Edit Schedule; to pick multiple days.; Cancel a Schedule Period

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 26 back to a comfortable temperature. Sleep —Period when you are asleep and want an energy- saving temperature. NOTE: Schedule times are in 15-minute intervals. Edit Schedule 1. Press Sched key. 2. Press Edit key. 3. It is OK to pick multiple days....

Page 27 - Fan Schedule

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 27 68-0287—1 6. The time, temperature(s) and fan setting disappear. The bar above the selected period is removed, indicating the scheduled period was cancelled. NOTE: To reinstate a schedule period, press arrow keys to set desired time and temperatures. 7. P...

Page 28 - OPERATE VISIONPRO; Set Time; Set Temperature Overrides; PERMANENT HOLD

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 28 OPERATE VISIONPRO ® IAQ Set Time 1. Press Clock. 2. Use arrows to set current time. 3. Press Done key. IMPORTANT The current day of the week should already be set correctly. If not, see Installer Setup to set the day. Set Temperature Overrides T...

Page 29 - SOUTHERN DEHUMIDIFICATION AWAY SETTING; Clean Thermostat Screen; Screen Locks; Partially Locked Screen; Humidification Control

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 29 68-0287—1 4. To cancel the Vacation Hold override early, press the Cancel key. NOTE: When the number of days of Vacation Hold expires, the screen shows “Following Schedule” to indicate that Vacation Hold has ended. SOUTHERN DEHUMIDIFICATION AWAY SETTING S...

Page 30 - Filter Change Reminder

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 30 If you don’t have a dehumidifier, the thermostat activates the air conditioner to reduce humidity (may cool as much as 3°F lower than your temperature setting). 1. Press MORE until the dehumidifier screen is displayed. 2. Press the Up or Down ar...

Page 31 - Humidifier Pad Reminder; Temperature Recovery

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 31 68-0287—1 5. Press the Reset key to activate the new number of days selected in the previous screen. 6. Press the Done key to return to the Home screen. Humidifier Pad Reminder The Humidifier Pad change reminder must be turned on from the Installer Setup....

Page 32 - Inside Humidity Level

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 32 NOTE: It takes about a week for the thermostat to adjust to local weather, the schedule, the construction of the home and the heating and/or cooling system. Each day it adjusts the next day’s recovery start time accordingly. P+I Control The ther...

Page 33 - Sensor; Operation

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 33 68-0287—1 C7089U1006 Outdoor Temperature Sensor Operation When installed with Thermostat Installer Setup Number 0342 set to 1, the outside temperature can be displayed on the thermostat. See Fig. 34. Fig. 34. Outside temperature reading on VisionPRO ® IAQ...

Page 34 - Checkout; COMMUNICATION ERROR CODES

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 34 installed with Thermostat Installer Setup Number 340 set to 2, the temperature displayed on the thermostat home screen as Inside Temperature will be a 50/50 average between the temperature sensed at the remote sensor location and the temperature...

Page 35 - TROUBLESHOOTING; Symptom

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 35 68-0287—1 TROUBLESHOOTING Table 15. Troubleshooting. Symptom Possible Cause Action Display does not come on Thermostat is not being powered Check if the thermostat is mounted and latched on the wall plate. If not: — Mount and latch the thermostat on the w...

Page 38 - COMPATIBILITY; Recommend the following products for use with the VisionPRO® IAQ.; Table 16. Humidifiers

VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM 68-0287—1 38 COMPATIBILITY Recommend the following products for use with the VisionPRO® IAQ. Following is a list of compatible communicating products. * T8635L thermostats used with TH9421C thermostats must be used with a W8835A Zone Panel and the TH9421C mu...

Page 40 - Automation and Control Solutions; Honeywell International Inc.

Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9 customer.honeywell.com VISIONPRO ® IAQ TOTAL HOME COMFORT SYSTEM ® U.S. Registered Trademark© 2006 Honeywell In...