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T6570, T8570 Series

Digital Fan-Coil Thermostats

PRODUCT DATA

APPLICATION

T6570 Series Digital Fan-Coil thermostats provide line voltage

on/off control for fans, valves, compressors or auxiliary

electric heaters in fan-coil and small air-conditioner

applications.

T8570 Series provides low voltage control of these functions.

Models are available for control of single stage air-conditioner

and various fan-coil units

–2-pipe.

– 2-pipe with manual heat/cool changeover.

– 4-pipe with manual heat/cool changeover.

– 4-pipe with automatic heat/cool changeover.

All models are suitable for multiple applications. Changes in

output wiring and external links between wiring terminals can

configure the thermostat for the appropriate application.

The fan can also be controlled from the thermostat. In some

cases it is wired to run continuously and can be switched off

with the On/Off switch. Other models can be installed with fan

running continuously or cycling with the thermostat.

Compressors and auxiliary electric heaters can be controlled

using a relay or contactor controlled by the thermostat.

FEATURES

• Simple user interface.

• Attractive modern styling ideal for offices or hotels.

• Digital display of ambient temperature, with user

activated temperature display.

• Digital display shows mode icons when cooling or

heating relays operate, or when energy savings mode

is active.

• Push button setpoint adjustment.

• Switches allow manual control of system operation

and fan speed.

• Energy savings mode - external energy savings input

from time switch, occupancy sensors or hotel cardkey

overrides comfort setpoint with setback heating or

cooling setpoint.

• Energy savings input configurable, normally open or

normally closed.

• Proportional plus integral (P+I) control algorithm for

precision temperature regulation.

• Mounts directly onto wall or standard junction box or

vertical junction box with optional adapter plate.

• Installer setup mode allows changes of operating

parameters.

• Selectable °C or °F display.

• Adjustable deadband (some models) for heat and cool

control.

• Selectable energy savings setup cooling and setback

heating setpoints.

• Adjustable maximum heating and minimum cooling

setpoint limits.

• Adjustable minimum relay off-times (heating or

cooling) for compressor short-cycle protection.

• EEPROM permanently retains user settings during

power loss (no batteries required).

• Capability to display temperature sensor failure for

easier troubleshooting.

• Optional remote sensor (T8575D only).

Contents

Application......................................................................... 1

Features ............................................................................ 1

Specifications .................................................................... 2

Ordering Information ......................................................... 2

Installation ......................................................................... 3

Operation........................................................................... 4

Operating Modes............................................................... 5

Wiring ................................................................................ 6

95C-10897-6

1 2 3 4 5 6 ... 11 12

Sommario

Pagina 1 - Digital Fan-Coil Thermostats

T6570, T8570 SeriesDigital Fan-Coil Thermostats PRODUCT DATA APPLICATION T6570 Series Digital Fan-Coil thermostats provide line voltage on/off control

Pagina 2 - ORDERING INFORMATION

T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS Fig. 19. Wiring 4-pipe 24V auto heat/cool changeover withcontinuous fan. Fig. 20. Wiring 4-pipe 24V a

Pagina 3

T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS 95C-10897–6 11

Pagina 4

T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 19

Pagina 5 - OPERATING MODES

T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS SPECIFICATIONS Table 1. Models Applications Features Switches Control Voltage 2-PipeFan Coil 4-Pip

Pagina 6 - Additional Switches

T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS Table 2. Electrical Rating 50-60 Hz 24V 120V 208V 230V 277V Amps (Resistive) 3.8 3.8 3.8 3.8

Pagina 7 - WIRING

40007507-001 T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS Mounting Any T6570, T8570 series thermostat can be mounted directly on the wall on a 65x

Pagina 8 - 95C-10897–6 8

T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS SINGLE STAGE COOLING C 23.0 PROPORTIONAL 22.5 BAND22.0 21.5 21.0 USER 20.5 SETPOINT 20.01 1 USER SET

Pagina 9 - Fan-Relay Control Center

T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS Table 4. Energy Saving Mode Default Settings Energy Savings Mode – Setpoints Heating Setpoint Coolin

Pagina 10 - CAUTION

T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS Table 5. Thermostat Parameter Options Parameter ID Description °C Scale °F Scale Default Values

Pagina 11 - 95C-10897–6 11

T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS Fig. 10. Wiring 4-pipe, heat/cool with manual heat/coolFig. 7. Wiring 2-pipe heat-only thermostat wit

Pagina 12 - ® U.S. Registered Trademark

T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS Fig. 13. Wiring 4-pipe, heat/cool with manual heat/coolchangeover switch, cycled fan, using external