Programmable Thermostats
THM5421 Equipment Interface Module for Prestige® IAQ and
®
VisionPRO
Product Number Terminal Designations Stages Includes Used with
THM5421R1021/U R, RC, RH, C, W-O/B, W2-AUX1, W3-
YTHM5421R1010/U R, RC, RH, C, W-O/B, W2-AUX1, W3-
8000 with RedLINK™
AUX2, Y, Y2, G, A-L/A, U1, U1, U2, U2,
U3, U3, S1, S1, S2, S2, S3, S3, S4, S4,
A, B, C, D
AUX2, Y, Y2, G, A-L/A, U1, U1, U2, U2,
U3, U3, S1, S1, S2, S2, S3, S3, S4, S4,
A, B, C, D
Up to 4 Heat / 2 Cool Heat Pump or
Up to 3 Heat / 2 Cool Conventional
Up to 4 Heat / 2 Cool Heat Pump or
Up to 3 Heat / 2 Cool Conventional
Equipment Interface Module controls up to 4-stages of heat and 2stages of cool in a heat pump system and up to 3-stages of heat
and 2-stages of cool in a conventional system. Three sets of
Universal IAQ contacts to control humidification, dehumidification,
and ventilation. Four sensor inputs for wired sensors or dry
contact devices.
Application: Gas, oil, electric, heat pump, forced warm air, hot water,
steam or gravity
Dimensions, Approximate: 9 5/16 in. High, 4 13/16 in. Wide, 1 5/8 in.
Deep (237.4 mm High, 122.5 mm Wide, 40.6 mm Deep)
Color: Gray
Electrical Connections: Screw terminals
Electrical Ratings: 18 to 30 Vac
Operating Humidity Range (% RH): 5 to 95% RH, non-condensing
Operating Temperature Range: -40 F to 165 F (-40 C to 73.9 C)
Currents (Cooling): 1.0 A running
Currents (Heating): 1.0 A running
Currents (Fan): 0.5A running
Frequency: 50 Hz; 60 Hz
Power Method: Hardwired
Mounting: Ver tica l
— Prestige® IAQ 2-Wire
THM5421R1021 and
2 Duct Sensors
Thermostat and VisionPRO®
Thermostat with RedLINK™
Prestige® IAQ 2-Wire
Thermostat and VisionPRO®
Thermostat with RedLINK™
Wi-Fi VisionPRO® 8000 Thermostat
Application: Wi-Fi VisionPRO Thermostat, Heat/Cool or Heat Pump
with Auxiliary Heat
Dimensions, Approximate: 4 9/16 in. high x 6 in. wide x 1 1/4 in. deep
(116 mm high x 152 mm wide x 32 mm deep)
Color: Premier White®
Display Size: 10 sq in
Programmability: 7 Day Multiple Day Programming or Non-
Programmable
Changeover: Auto/Manual Selectable
Electrical Ratings: 20 to 30 Vac or 750 mV
Switch Positions
Product Number
TH8320WF1029/U HEAT-OFF-
System Fan (F) (C)
COOL-AUTOEM.HEAT
AUTO-ONCIRC
Terminal Designations Stages
R, RC, W (O/B), W2 (AUX),
Y, Y2, L, E, G, C, S1, S2
Expanding your business has just been made easier. Offer your
customers the VisionPRO® Wi-Fi thermostat from Honeywell, a
trusted name and leader of thermostats. Millions of homes today
are equipped with Wi-Fi enabled devices, and while a consumer
might not understand the technology, they certainly understand
what it allows them to do on a daily basis. This could translate into
an easy selling opportunity for you. Conscientious homeowners
who want a simple way to remotely monitor and help manage their
energy costs will have the peace of mind with this latest Wi-Fi
offering from Honeywell. And, they will have you to thank.
• Get Connected - Connect to home's existing Wi-Fi network.
• Remote Control - Convenience, comfort and control from anywhere
through web, tablet or smartphone access.
• Dual Fuel Capable.
• Touchscreen Interaction.
Operating Humidity Range (% RH): 5 to 90% RH, non-condensing
Differential Temperature: ± 1 F (±0.5 C)
Currents (Cooling): 1.0 A running
Currents (Heating): 1.0 A running
Currents (Fan): 0.6A running
Frequency: 50 Hz; 60 Hz
Power Method: Battery or Hardwired
Mounting: Horizontal
Comments:
terminal is an input or output.
Up to 2 Heat/2 Cool Conventional;
Up to 3 Heat/2 Cool Heat Pump
Selectable: Programmable or Non-Programmable; The L
Temperature Setting Range
Heat: 40 F to 90 F;
Cool 50 F to 99 F
Heat: 4.5 C to 32 C;
Cool: 10 C to 37 C
10 customer.honeywell.com 70-6910
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