Honeywell VisionPRO Catalog Page

Programmable Thermostats

Z-Wave Touch Screen Programmable Thermostat

VisionPRO Z-Wave offers you top-of-the-line features like
touchscreen interaction, a real-time clock, and a large, easy-to­read backlit display.

Color: Premier White®
Changeover: Auto or Manual
Electrical Ratings: 18 to 30 Vac

Product Number Programmability Terminal Designations

YTH8320ZW1007/U Universal Programming from 7 Day to Non-Programmable R, RC, C, W-O/B, W2-E/Aux, Y, Y2, G, L, K, S1, S2

VisionPRO® IAQ Total Home Comfort System

The VisionPRO IAQ touchscreen universal programmable
thermostat provides electronic control of 24 Vac heating and
cooling systems in addition to humidification, dehumidification
and ventilation all with just 3 wires to the thermostat.

• Advanced dual-fuel control

• Three wires to the living space allows for easy equipment upgrade
without having to run additional thermostat wire

• Thermostat connects with Equipment Interface Module or
EnviraZONE panel to control temperature, humidification,
dehumidification and ventilation from a single point in the home

• Automatically raises humidity levels throughout all rooms in the
home, moisturizing air to prevent symptoms of dryness and
to protect hardwood flooring and woodwork

• Removes air pollutants by exchanging the stale air in a house
with fresh, filtered air better than having an open window

Dimensions, Approximate: 4 9/16 in. high x 6 in. wide x 1 1/4 in. deep

(116 mm x 152 mm x 32 mm)

Color: Premier White®
Programmability: 7 Day Multiple Day Programming or Non-

Programmable

Changeover: Auto/Manual Selectable
Electrical Ratings: THM5421 is rated 20 to 30 Vac
Humidity Setting Range: Dehumid.: 40 to 80% RH, Humid.: 10 to 60%

RH

Operating Humidity Range (% RH): 5 to 90% RH, non-condensing
Temperature Setting Range: Cooling: 60 F to 99 F (15 C to 37 C),

Heating: 40 F to 90 F (4.5 C to 32 C)

Differential Temperature: ± 1 F (±0.5 C)
Powe r Method: Communicating

Sensor Element: Thermistor
Switch Type:

Yes, optional

Outdoor Sensor: Yes, optional
Remote Sensor: Yes, optional
Comments: Includes Humidification Control with or without Frost

Protection, Dehumidification using Whole House Dehumidifier or Air
Conditioning with High or Low speed fan, Advanced Patented
Ventilation Control and Advanced Dual Fuel Heat Pump Control

Accessories:

32003796-001-Premier White® cover plate 7 7/8 in. x 5 1/2 in.

(200 mm x 140 mm)

C7089U1006-Remote Outdoor Sensor
C7189U1005-

Remote Indoor Sensor

Controls

Home

Product Number Application Stages

TH9421C1004/U Conventional

THM5421C1008/U Heat/Cool or

YTH9421C1002/U Heat/Cool or

YTH9421C1010/U Heat/Cool or

and Heat
Pump
systems

Heat Pump
with Auxiliary
Heat

Heat Pump
with Auxiliary
Heat

Heat Pump
with Auxiliary
Heat

Up to 3 Heat/2 Cool
Conventional; Up to
4 Heat/2 Cool Heat
Pump

Up to 3 Heat/2 Cool
Conventional; Up to
4 Heat/2 Cool Heat
Pump

Up to 3 Heat/2 Cool
Conventional Up to
4 Heat/2 Cool Heat
Pump

Up to 3 Heat/2 Cool
Conventional Up to
4 Heat/2 Cool Heat
Pump

Switch

Display
Size Mounting

10 sq in. Horizontal HEAT-

— Vertical — — 1, 2, 3, C, R, Rc,

10 sq in. Horizontal HEAT-

10 sq in. Horizontal HEAT-

Positions

OFF­COOL­AUTO­EM.HEAT

OFF­COOL­AUTO­EM.HEAT

OFF­COOL­AUTO­EM.HEAT

70-6910 11

Termi nal
Designations Used With IncludesSystem Fan

AUTO

1, 2, 3 THM5421C1008

-ON­CIRC

Rh, R, W1-O/B,
W2-Aux, W3­Aux2, Y, Y2, G,
L, Out1, Out2,

AUTO

In1, In2, Dats1,

-ON­Dats2, Hum1,

CIRC

Hum2, Dhm1,
Dhm2, Vnt1,
Vnt2

AUTO

-ON-

CIRC

Equipment
Interface
Module

TH9421
VisionPRO IAQ
Thermostat

— TH9421C1004

— TH9421C1004

Thermostat only

Equipment Interface
Module Only

Thermostat and
THM5421C1008
Equipment Interface
Module

Thermostat,
THM5421C1008
Equipment Interface
Module and
C7089U1006 Outdoor
Temperature Sensor