T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS
SPECIFICATIONS
Table 1.
Models
Applications Features Switches Control
Voltag e
2-Pipe
Fan Coil
4-Pipe
Fan Coil
Number
of
Relays
Energy
Savings
Input
Fan
On/
Auto
Auto
Changeover
Deadband Adjust
Remote
Sensor
On/Off
(SPST)
3-Speed
Fan
(SP3T)
Heat/
Cool
Wiring
Diagram
T6574B •2 1 • • • • Fig. 6
120V, •1 1 • • • • Fig. 7
208~ •3 1 • • • Fig. 8
T6575B 277V, • 2 • • • • Fig. 9
50 - • 2 • • • • Fig. 10, 13
T6575C 60 Hz • 2 • • • • Fig. 11, 13
T6575D • 2 • • • • • Fig. 12, 13
T8574B •2 1 • • • • Fig. 15
24V, •1 1 • • • • Fig. 16
T8575B 50 - • 2 • • • • Fig. 17
60 Hz • 2 • • • • Fig. 18
T8575C • 2 • • • • Fig. 19
T8575D • 2 • • • •4 • • Fig. 20
1 Heating application
2 Cooling application
3 2-pipe system with external aquastat.
4 optional accessory.
Setpoint Range: 10°C to 30°C (50°F to 90°F). Enclosure: (cover, base, and wallplate) Plastic.
Supply Voltages: 24 (NEMA - rated transformer), 120, 230, Control Performance: On/Off control with P+I algorithm
277 Vac (±10%), 50/60 Hz. (depending on model select ed) gives typical control to 0.75°C (1.5°F) at 22°C (72°F) and
0.5 A. 50% duty cycle.
Ambient Ratings: Junction Box Mounting: Direct mounting on single gang
Temperature: NEMA 2" x 4" surface mount electrical box, or on 4" x 4"
Operating Range: 5°C to 45°C (41°F to 113°F). box with optional 272878 adapter plate.
Shipping and Storage Range: -20°C to 55°C (-4°F to
131°F). Wiring: 11 terminals; screw-in terminals capable of accepting
Humidity Range: 5 to 95% RH, non-condensing at 26°C up to 2 x 18 AWG, 1 x 14 AWG, or 1.5 mm2 wires. Some
(79°F). terminals pre-fitted with color-co ded flyleads.
Thermostat Output: 1spdt or 2 spst relay outputs (depending
on model).
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada–Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
95C-10897–6 2