Honeywell Home T6590A Fan-Coil Controller Installation Guide
Installation
Wiring
Application 0: Two Pipes, Heating only
Application 1: Two Pipes, Cooling only
Application 2: Two pipes, Heating or Cooling, Manual changeover
Application 3: Two pipes, Heating or Cooling, Auto changeover
Application 4, 5 & 7 (T6590B ONLY / SEULEMENT T6590B / T6590B SOLTANTO / SOLO T6590B): Four pipes, Heating & Cooling, Manual or Auto changeover
Application 6 (T6590B ONLY / SEULEMENT T6590B / T6590B SOLTANTO / SOLO T6590B) : Two pipes, Heating or Cooling with Auxiliary electric heater
Applications
T6590A (2 Pipe Model)
Application | Description | Changeover | Fan speed | Remote sensor | Pipe sensor | Remote setback | Auxiliary Heater | Output type |
| 0 | 2 pipe system, heating only | – | ON/OFF, 1/2/3, AUTO | • | – | • | – | ON, OFF |
1 | 2 pipe system, cooling only | – | ON/OFF, 1/2/3, AUTO | • | – | • | – | ON, OFF |
2 | 2 pipe system, 1 stage heat or 1 stage cool | Manual | ON/OFF, 1/2/3, AUTO | • | – | • | – | ON, OFF |
3 | 2 pipe system, 1 stage heat or 1 stage cool, auto changeover | Seasonal Changeover | ON/OFF, 1/2/3, AUTO | • | • | • | – | ON, OFF |
T6590B (4 Pipe Mode)
Application | Description | Changeover | Fan speed | Remote sensor | Pipe sensor | Remote setback | Auxiliary Heater | Output type |
0 | 2 pipe system, heating only | – | ON/OFF, 1/2/3, AUTO | • | – | • | – | ON, OFF |
| 1 | 2 pipe system, cooling only | – | ON/OFF, 1/2/3, AUTO | • | – | • | – | ON, OFF |
2 | 2 pipe system, 1 stage heat or 1 stagecool | Manual | ON/OFF, 1/2/3, AUTO | • | – | • | – | ON, OFF |
| 3 | 2 pipe system, 1 stage heat or 1 stage cool, auto changeover | Seasonal Changeover
| ON/OFF, 1/2/3, AUTO | • | • | • | – | ON, OFF |
4 | 4 pipe system 1 stage heat and 1 stage cool | Manual | ON/OFF, 1/2/3, AUTO | • | – | • | – | ON, OFF |
5 | 4 pipe system 1 stage heat and 1 stage cool auto changeover | Auto changeover | ON/OFF, 1/2/3, AUTO | • | – | • | – | ON, OFF |
| 6 | 2 pipe system, 1 stage heat or 1 stage cool with auxiliary electric heater | Manual with seasonal changeover | ON/OFF, 1/2/3, AUTO | • | • | • | • | ON, OFF |
7 | 4 pipe system, mixed manual and auto | Manual / Auto changeover | ON/OFF, 1/2/3, AUTO | • | – | • | – | ON, OFF |
Installer Setup Mode
The T6590 is delivered with a set of pre-configured operational values that will allow the device to function immediately. However, in order to make the device compatible with a specific system, some of the internal settings may need to be changed. For information on the default values and the configurable options, please refer to the “Installer Parameter Table”.
- To enter the Installer Setup Mode, press the (
) and 
buttons together for 3 seconds.
- To index between the individual Parameters, use the () button. It is only possible to move upwards through the parameters.
- To change a selected parameter, use the or
button.
- To save the altered settings, exit the Installer Setup Mode by Pressing the () and buttons together for 3 seconds. NB: If the Installer Setup Mode is exited by time-out (approximately 120 seconds), then the newly changed values will not be saved.
) and 
buttons together for 3 seconds.
button.
Installer Parameters Table
| Parameter No | Parameter | Setting |
| 1 | System Type | 0 = 2 Pipe system Heat Only |
| 1 = 2 Pipe system Cool Only | ||
| 2 = 2 Pipe system 1H1C manual changeove | ||
| 3 = 2 Pipe system 1H1C auto changeover (default on T6590A) | ||
| 4 = 4 pipe system with manual changeover (not available on T6590A) | ||
| 5 = 4 Pipe system auto changeover (default on T6590B | ||
| 6 = 2 pipe system 1H1C with Auxiliary Heater. Manual changeover | ||
| 7 = 4 pipe system, mixed manual and automatic changeover (not available on T6590A) | ||
| 2 | Valve output type | 0 = NO* ON/OFF (Default) |
| 1 = NC** ON/OFF | ||
| 3 | Sensor Type | 0 = Onboard Sensor (Default) |
| 1 = Remote Sensor | ||
| 4 | Pipe sensor (Note: This item will be automatically populated based on Parameter No.2) | 0 = NO* input (Default = Heat |
| 1 = NO* input (Default = Cool) | ||
| 2 = NC** input (Default = Heat) | ||
| 3 = NC** input (Default = Cool) | ||
| 4 = Analogue input (Default) (NTC20K, T7414C1012) | ||
| 5 | Threshold for pipe sensor cooling | 10 – 18°C (Default) |
| 6 | Threshold for pipe sensor heating | 24 – 32°C (Default) |
| 7 | Fan control type Fan stops in deadband | 0 = Cycle or Constant (Default) (3 speed: Low->Med->High->Auto-> Low) |
| 1 = Constant only (3 speed: Low->Med->High-> Low) | ||
| 8 | Dead band for four pipes | 1 – 5°C (Default = 2°C) (not available on T6590A) |
| 9 | Cycles Per Hour (CPH) value for heating | 1 – 12 CPH (Default) |
| 10 | Cycles Per Hour (CPH) value for cooling | 1 – 6 CPH (Default) |
| 11 | Cycles Per Hour(CPH) value for Auxiliary Heater | 1 – 12 CPH (Default) |
| 12 | Display Temperature adjustment | -2 to +2°C (Default) |
| 13 | Temperature Display mode | 0 = Room Temperature only |
| 1 = Setpoint only | ||
| 2 = Room Temperature and Setpoint (Default) | ||
| 14 | Heating setpoint Range Stops | 10 – 32°C (Default) |
| 15 | Cooling setpoint Range Stops | 10 – 32°C (Default) |
| 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 | ||
| 17 | Remote setback | 1 = Hotel card NO*, with 1 second software delay going from Unoccupied to Occupied; 2 minute delay going from Occupied to Unoccupied |
| 2 = Hotel card NC**, with 1 second software delay going from Unoccupied to Occupied; 2 minute delay going from Occupied to Unoccupied | ||
| 3 = Hotel Card enabled, NO*, with 1 second software delay going from Unoccupied to Occupied; 30 minute delay going from Occupied to Unoccupied | ||
| 4 = Hotel Card enabled, NC**, with 1 second software delay going from Unoccupied to Occupied; 30 minute delay going from Occupied to Unoccupied | ||
| 18 | Remote setback heating setpoint | 10 – 21°C (Default) |
| 19 | Remote setback cooling setpoint | 22 – 32°C (Default) |
| 20 | Activity Sensing (If no key is pressed after a certain period which is configured in this item, the system will enter Unoccupied mode) | 0 = Disabled (Default) |
| 1 = 4 Hour Sensing | ||
| 2 = 12 Hour Sensing | ||
| 3 = 24 Hour Sensing. NB: 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) |
| 21 | 1 = Enabled – Thermostat Cycles On Heat when room temperature reaches 4°C and disables Heat when room temperature reaches below 8°C. This feature can not activate if the application is cool only | |
| 22 | Auto Fan Reset | 1 = Reset back to Auto after 2 hours (Not allowed when constant fan is selected in Parameter No.7). The start time is calculated after the initial call for heat |
| 2 = Reset back to Auto after 4 hours (Not allowed when constant fan is selected in Parameter No.7). The start time is calculated after the initial call for heat/cool | ||
| 23 | Fan run-on time after auxiliary heater is switched off | 0 – 600 Sec. (Default) |
Support
Ademco 1 GmbH
Hardhofweg 40
74821 Mosbach
Phone: +49 1801 466 388
[email protected]
homecomfort.resideo.com
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