Honeywell T6590A1000, T6590B1000 PRODUCT DATA

APPLICATIONS

The T6590 range of digital thermostats is designed to control the valves, fan and auxiliary electric heater within fan-coil systems.

Modern, attractive styling and comprehensive feature set makes the T6590 suitable for a wide range of applications.

There are a total of 8 application configurations supported, and these are:

Application Description

0 2 pipe system, heating only

1 2 pipe system, cooling only

2 2 pipe system, 1 stage heat or 1 stage cool

3 2 pipe system, 1 stage heat or 1 stage cool,

auto changeover

4 4 pipe system 1 stage heat and 1 stage cool

5 4 pipe system 1 stage heat and 1 stage cool

auto changeover

6 2 pipe system, 1 stage heat or 1 stage cool

with auxiliary electric heater

7 4 pipe system, mixed manual and auto

The different applications can be selected from the installer setup mode and by altering the external wiring connections

T6590 Series

FAN-COIL CONTROLLER

PRODUCT DATA

FEATURES

• Large, easy to read LCD display with backlight

• Heat / Cool or standby mode displayed on LCD

• Lockable keypad

• Room setpoint adjustable via simple-to-use up/down

buttons

• Fan speed ON/Off, low/med/high or auto

• Auto mode, fan speed is proportional to distance of room

temperature from setpoint

• Manual or automatic heat / cool changeover

• Control of auxiliary electric heater

• Inbuilt or remote sensor (NTC20K) options available

• Simultaneous display of room temperature and user

setpoint

• Push button adjustment of setpoint

• Switches allow manual control of system operation

and fan speed

• Special energy savings mode activated by external

input from Energy Management System (EMS) – a window contact or hotel card-key - overrides the temperature setting to installer defined heating and cooling temperatures

• Energy savings input (remote setback) can be

configured to be normally open (NO) circuit or normally closed (NC) circuit

• All models have a proportional plus integral (P+I)

• T6590 meets all relevant requirements for CE

approval

• Installer setup mode allowing operating parameters

to be changed

• Installer set up settings retained in the event of a

power loss

• Central remote setback for both cooling and heating

operation

• Freeze protection

• Automatic setback to unoccupied mode with no key

operation

• °C display

• 0°C to 2°C Temperature display offset available

• Easy to use installer setup mode allows for simple

thermostat setup

• Adjustable deadband for heat & cool sequence

control

• Setpoint range 10°C to 32°C

• Installer test mode for on-site wiring checks

• Line voltage (230V~) models available

EN0H8579 R0 2009

T6590 FAN-COIL THERMOSTAT

SPECIFICATIONS

Setpoint range 10...32oC

Supply voltage

Control Performance

Electrical ratings

230 V~ (+10%, -15%), 50/60 Hz P+I algorithm applied to ON/OFF control gives typical control to ±1.0°C at 22°C at 50% duty cycle,

nominal control to ±1.0°C

Fan Motor: 230V~, 50…60Hz, 3.0A run, with inrush 6A Valve Actuators: 230V~, 50…60Hz, 1.0A run, with inrush 3.5A

Operational life

Mounting

Greater than 100,000 cycles (all loads) for thermostat contacts at 230 V~ Mounts directly onto wall or wall-box - a standard 65x65mm junction box (hole pitch 60mm). Mounting

screws supplied.

Wiring 11 screw-in terminals per unit, capable of accepting either 2 wires up to 1.5 mm

Energy Savings Input Voltage-free contact (rating 24Vdc), maximum contact resistance of 1000ohms

Enclosure Plastic 3-piece housing

Dimensions 97 x 148 x 29 mm (h x w x d)

Environmental requirements

Approvals

Operating temperature range 5 to 45ºC Shipping and storage temperature range -20 to 55ºC Humidity range 5 to 95% rh, non-condensing

CE mark, complying with standards EN60730-1 (2001), EN55014-1 (2007), EN55014-2 (1997). Product must be wired as shown for CE compliance.

T6590 APPLICATIONS

, or 1 x 2.5mm2

T6590A1000 – 2 Pipe Model

Application Description Changeover Fan speed

0 2 pipe system, heating only No

1 2 pipe system, cooling only No

2 pipe system, 1 stage heat or 1 stage cool 2 pipe system, 1 stage heat or 1 stage cool, auto changeover

2 pipe system, 1 stage heat or 1 stage cool with auxiliary electric heater

Manual

Seasonal Changeover

Manual with seasonal changeover

On/Off, 3 speed or Auto On/Off, 3 speed or Auto On/Off, 3 speed or Auto On/Off, 3 speed or Auto

On/Off, 3 speed or Auto

T6590B1000 – 4 Pipe Model

Application Description Changeover Fan speed

0 2 pipe system, heating only No

1 2 pipe system, cooling only No

2 pipe system, 1 stage heat or 1 stage cool 2 pipe system, 1 stage heat or 1 stage cool, auto changeover

4 pipe system 1 stage heat and 1 stage cool

4 pipe system 1 stage heat and 1 stage cool auto changeover

2 pipe system, 1 stage heat or 1 stage cool with auxiliary electric heater

4 pipe system, mixed manual and auto

Manual

Seasonal Changeover

Manual

Auto changeover

Manual with seasonal changeover

Manual / Auto changeover

On/Off, 3 speed or Auto On/Off, 3 speed or Auto On/Off, 3 speed or Auto On/Off, 3 speed or Auto

On/Off, 3 speed or Auto

Remote sensor

Y Y On Off

Y Y Y On Off

Y Y Y Y On Off

Remote sensor

Y Y On Off

Y Y Y On Off

Y Y On Off

Y Y Y Y On Off

Y Y On Off

Pipe sensor

Remote setback

Auxiliary Heater

Output type

EN0H8579 R0 2009

INSTALLATION

Location

The T6590 Series thermostat is the temperature control element in the fan-coil or air-conditioning system, and must be located about 1.2 to 1.5m above the floor (according to local building regulations) in a position with good air circulation at room temperature. Do not mount it where it could be affected by :-

- draughts or dead spots behind doors or in corners

- hot or cold air from ducts

- radiant heat from the sun or appliances

- unheated (uncooled) areas such as an outside wall behind the thermostat

- concealed pipes or chimneys

Mounting the thermostat

ny T6590 Series thermostat can be directly mounted on the wall or horizontally on either a 65x65mm standard junction box or a 2x4inch US junction box. Mounting screws are supplied for both alternatives.

IMPORTANT

The installer must be a trained service engineer Isolate the power supply before beginning installation

T6590 FAN-COIL THERMOSTAT

1. Locate the wall-plate in the mounting position, insert the mounting screws through the appropriate holes, and screw into position.

2. Complete the wiring.

3. Attach the thermostat to the wall-plate as follows:

4. Locate the 4 side slots on the wall plate into the appropriate slots on the back of the thermostat.

5. Press down firmly and snap the thermostat into place.

6. Tighten retaining screw in lower edge of thermostat.

Wiring the thermostat

The standard wiring access is via a hole in the centre of the thermostat wall-plate.

Removing the thermostat from the wall

If it becomes necessary to remove the thermostat from the wall-plate:

1. Isolate the power supply before removing the thermostat.

2. Loosen the retaining screw in the lower edge of the thermostat.

3. Pry the lower edge of the thermostat away from the wallplate.

4. Use both hands to pull the thermostat straight away from the wall-plate.

5. NOTE - Incorrect removal of the thermostat from the wall-plate may damage the device.

EN0H8579 R0 2009

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