T6590 Series Strandvejen 42
Saksild
8300 Odder

86 62 63 64
www.automatikcentret.dk
FAN-COIL CONTROLLER info@automatikcentret.dk

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. Fan stops when setpoint is
reached
• Manual or automatic heat / cool changeover
• Control of auxiliary electric heater on T6590B1000
model
• Inbuilt or wall mounted remote sensor (NTC20K)
APPLICATIONS options available

The T6590 range of digital thermostats is designed to control

• Simultaneous display of room temperature and user
setpoint
the valves, fan and auxiliary electric heater within fan-coil
systems. • Push button adjustment of setpoint

Modern, attractive styling and comprehensive feature set • Switches allow manual control of system operation
and fan speed
makes the T6590 suitable for a wide range of applications.
There are a total of 8 application configurations supported,
• Special energy savings mode activated by external
input from Energy Management System (EMS) – a
and these are: window contact or hotel card-key - overrides the
temperature setting to installer defined heating and
Application Description cooling temperatures
0 2 pipe system, heating only • Energy savings input (remote setback) can be
configured to be normally open (NO) circuit or
1 2 pipe system, cooling only normally closed (NC) circuit
2 2 pipe system, 1 stage heat or 1 stage cool • All models have a proportional plus integral (P+I)
3 2 pipe system, 1 stage heat or 1 stage cool, • T6590 meets all relevant requirements for CE
auto changeover approval
4 4 pipe system 1 stage heat and 1 stage • Easy to use Installer setup mode allowing operating
cool parameters to be changed

5 4 pipe system 1 stage heat and 1 stage

• Installer test mode for ease of installation
cool auto changeover • Installer set up settings retained in the event of a
power loss
6 2 pipe system, 1 stage heat or 1 stage cool
with auxiliary electric heater (T6590B only) • Central remote setback for both cooling and heating
operation
7 4 pipe system, mixed manual and auto
• Freeze protection
The different applications can be selected from the installer
setup mode and by altering the external wiring connections • Automatic setback to unoccupied mode with no key
operation
• °C display
• 0°C to 2°C Temperature display offset available
• 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
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SPECIFICATIONS
Setpoint range 10...32oC
Supply voltage 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,
Control Performance
nominal control to ±1.0°C
Electrical ratings 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 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
Mounting screws supplied.
Wiring 11 screw-in terminals per unit, capable of accepting either 2 wires up to 1.5 mm2 , or 1 x 2.5mm2
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 Operating temperature range 5 to 45ºC Shipping and storage temperature range -20 to 55ºC
requirements Humidity range 5 to 95% rh, non-condensing
Approvals 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

T6590A1000 – 2 Pipe Model

Remote Pipe Remote Auxiliary Output
Application Description Changeover Fan speed
sensor sensor setback Heater type
On/Off, 3 speed or
0 2 pipe system, heating only No Y Y On Off
Auto
On/Off, 3 speed or
1 2 pipe system, cooling only No Y Y On Off
Auto
2 pipe system, 1 stage heat or 1 On/Off, 3 speed or
2 Manual Y Y On Off
stage cool Auto
2 pipe system, 1 stage heat or 1 Seasonal On/Off, 3 speed or
3 Y Y Y On Off
stage cool, auto changeover Changeover Auto

T6590B1000 – 4 Pipe Model

Remote Pipe Remote Auxiliary Output
Application Description Changeover Fan speed
sensor sensor setback Heater type
On/Off, 3 speed or
0 2 pipe system, heating only No Y Y On Off
Auto
On/Off, 3 speed or
1 2 pipe system, cooling only No Y Y On Off
Auto
2 pipe system, 1 stage heat or 1 On/Off, 3 speed or
2 Manual Y Y On Off
stage cool Auto
2 pipe system, 1 stage heat or 1 Seasonal On/Off, 3 speed or
3 Y Y Y On Off
stage cool, auto changeover Changeover Auto
4 pipe system 1 stage heat and 1 On/Off, 3 speed or
4 stage cool Manual Y Y On Off
Auto
4 pipe system 1 stage heat and 1 Auto On/Off, 3 speed or
5 stage cool auto changeover Y Y On Off
changeover Auto
2 pipe system, 1 stage heat or 1 Manual with
stage cool with auxiliary electric On/Off, 3 speed or
6 seasonal Y Y Y Y On Off
heater Auto
changeover
4 pipe system, mixed manual Manual /
On/Off, 3 speed or
7 and auto Auto Y Y On Off
Auto
changeover

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INSTALLATION
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.

Wall Mounted Remote Sensor

Use Honeywell Home type TR21/U and connect according to
wiring diagram on the installation leaflet.
Location
The T6590 Series thermostat is the temperature control
element in the fan-coil or air-conditioning system, and must be Removing the thermostat from the wall
located about 1.2 to 1.5m above the floor (according to local If it becomes necessary to remove the thermostat from the
building regulations) in a position with good air circulation at wall-plate:
room temperature. Do not mount it where it could be affected
by:- 1. Isolate the power supply before removing the
thermostat.
- draughts or dead spots behind doors or in corners 2. Loosen the retaining screw in the lower edge of the
- hot or cold air from ducts thermostat.
- radiant heat from the sun or appliances 3. Pry the lower edge of the thermostat away from the wall-
- unheated (uncooled) areas such as an outside wall plate.
behind the thermostat 4. Use both hands to pull the thermostat straight away
- concealed pipes or chimneys from the wall-plate.
5. NOTE - Incorrect removal of the thermostat from the
Mounting the thermostat wall-plate may damage the device.
Any 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

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INSTALLER SETUP MODE (ISU) – T6590A1000 & T6590B1000

ISU Number and
Units Range
description
- 0 = 2 Pipe system Heat Only

- 1 = 2 Pipe system Cool Only

- 2 = 2 Pipe system 1H1C manual changeover

- 3 = 2 Pipe system 1H1C auto changeover (default on T6590A1000)

1 System Type
- 4 - 4 pipe system with manual changeover (not available on T6590A1000)

- 5 = 4 Pipe system auto changeover (default on T6590B1000) (Not available on T6590A1000)

6 = 2 pipe system 1H1C with Auxiliary Heater. Manual changeover (Not available on
-
T6590A1000)

- 7 = 4 pipe system, mixed manual and automatic changeover (not available on T6590A1000)

- 0 NO ON/OFF (Default)
2 Valve output type
- 1 NC ON/OFF

- 0 Onboard Sensor (Default)

3 Sensor Type
- 1 remote sensor (NTC20K)

- 0 NO input (default mode is Heat)

- 1 NO input (default mode is Cool)

4 Pipe sensor (Note: This
item will be automatically
- 2 NC input (default mode is Heat)
populated based on ISU #2
selection).
- 3 NC input (default mode is Cool)

- 4 Analog input (Default)（NTC20K, T7414C1012）

5 Threshold for pipe sensor

ºC Range: 10-18 ºC (Default 15 ºC)
cooling
6 Threshold for pipe sensor
ºC Range: 24-32 ºC (Default 27 ºC)
heating
0 User can choose Cycle or Constant (Default)
7 Fan control type -
(3 speed: Low->Med->High->Auto-> Low) – fan off when setpoint reached
1 CONSTANT ONLY
-
(3 speed: Low->Med->High-> Low) – fan off when setpoint reached

8 Dead band for four pipes ºC 1ºC, 2ºC (Default), 3ºC, 4ºC, 5ºC (not available on T6590A1000)

9 Cycles Per Hour (CPH)

- 1 – 12CPH (Default 4)
value for heating
10 Cycles Per Hour (CPH)
- 1 – 6CPH (Default 3)
value for cooling
11 Cycles Per Hour (CPH)
- 1-12 (Default 6)
value for Auxiliary Heater

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ISU Number and

Units Range
description
12 Display
Temperature ºC -2ºC - +2ºC (Default 0ºC)
adjustment
13 Temperature
- 0 display Room Temperature
Display mode

- 1 display Setpoint

- 2 display both (Default)

14 Heating setpoint
ºC 10-32ºC (default 32ºC)
Range Stops
15 Cooling setpoint
ºC 10-32ºC (default 10ºC)
Range Stops

16 Keypad Lockout - 0 All keys available(default)

- 1 System button Locked out

- 2 Fan and System button Locked out

- 3 All buttons locked out

1: Hotel card NO, with 1 second software delay going from UnOcc to Occupied; 2 minute delay
17 Remote setback -
going from Occupied to UnOcc.
2: Hotel Card NC, with 1 second software delay going from UnOcc to Occupied; 2 minute delay
-
going from Occupied to UnOcc.
3: Hotel Card enabled, NO, with 1 second software delay going from UnOcc to Occupied; 30
-
minute delay going from Occupied to UnOcc
4: Hotel Card enabled, NC, with 1 second software delay going from UnOcc to Occupied; 30
-
minute delay going from Occupied to UnOcc.
18 Remote setback
ºC Range 10-21ºC (Default 18ºC)
heating setpoint
19 Remote setback
ºC Range 22-32ºC (Default 26ºC)
cooling setpoint

20 Activity Sensing (No

single key pressed
after certain period
- 0 Disabled (Default)
which is configured in
this parameter, the
system will enter
unoccupied mode)

- 1 4 Hour Sensing

- 2 12 Hour Sensing
3 24 Hour Sensing Comment: Anytime the thermostat is not touched (no single key pressed), the
- thermostat will automatically fall back into unoccupied setpoints. When any key is pressed,
thermostat controls to occupied mode.
21 Freeze Protection - 0 Disabled (Default)

1 Enabled – Stat Cycles On Heat when room temperature reaches 4ºC and disables Heat when
-
room temperature reaches below 8ºC. This feature can not activate if the application is cool only

22 Auto Fan Reset - 0 Inactive (Default)

1 Reset back to Auto after 2 hours (Not when constant fan is selected in ISU #7). The start time is
-
calculated after the initial call for heat/cool.
2 Reset back to Auto after 4 hours (Not allowed when constant fan is selected in ISU #7). The
-
start time is calculated after the initial call for heat/cool.
23 Fan run-on time
after auxiliary heater is S 0 – 600Sec (Default 60Sec)
switched off

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DIMENSIONS

Remote wall sensor

Remote setback

Application 2: Two pipes heating or Cooling, manual

changeover wiring diagram

WIRING DIAGRAMS Remote wall sensor

Remote setback
Pipe sensor

Application 3: Two pipes, one stage heating or cooling – Auto

changeover wiring diagram

Remote wall sensor

Remote setback

Remote wall sensor

Application 0: Two Pipes, Heating-Only wiring Diagram Remote setback

Application 4, 5 & 7: Four pipes (Heat + Cool) Manual / Auto

changeover wiring diagram

N
Remote wall sensor
Remote setback

Application 1: Two Pipes, Cooling-Only wiring diagram

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WIRING DIAGRAMS (CONT)

N
Remote wall sensor

Remote setback

Pipe sensor

Application 6: Two pipe heating or cooling with Auxiliary

electric heater wiring diagram (T6590B1000 only)

ORDERING SPECIFICATIONS
OS Number Description
FCU Controller two pipe,
T6590A1000
230VAC
FCU Controller two or four
T6590B1000
pipe, 230VAC

Ademco 1 GmbH @2020 Resideo Technologies, Inc.

Hardhofweg 40 All rights reserved The Honeywell Home
74821 Mosbach trademark is used under license from
Phone: +49 1801 466 388 Honeywell International Inc. This product
info.de@resideo.com is manufactured by Resideo
www.resideo.com homecomfort.resideo.com Technologies, Inc and its affiliates.

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