Honeywell T6580 PRODUCT SPECIFICATION SHEET
30
20
10
DESCRIPTION
A pleasing and modern appearance makes the T6580 ideal for living quarter applications, in particular offices and hotels.
In all versions, the control is Proportional + Integral (P+I). This ensures accurate temperature control in all operating conditions.
The controller is suitable for mounting on a fan-coil chassis or for wall mounting.
In 2-pipe plants the summer/winter switching can be activated by a central contact, controlled automatically through a connected thermostat or by a sensor installed on the pipe near the fan coil.
There are two pre-set room regulating levels: Comfort and Economy, to which two temperature levels are linked; the selection of which can be made through the room unit or by digital inputs.
The sensor for the temperature regulation is located inside the room unit and is overridden if the optional remote sensor is fitted.
Commands available: set-point configuration knob, fan speed knob, push button for operating mode setting; push button for summer/winter switching (Economy mode and summer/winter switch buttons are not included on the Lite model).
T6580
FAN COIL CONTROLLER
PRODUCT SPECIFICATION SHEET
FEATURES
•2-pipe or 4-pipe fan coil applications
•Installer setup mode allows 11 parameters to be changed easily on-site
•Proportional + integral digital control regulator
•Heating / cooling sequence and supplementaryheating with electrical resistance heater
•Electrical resistance / cooling sequence
•Cooling / cooling sequence
•Ventilation only
•Manual or automatic summer / winter switching
•Automatic 3-speed fan control or manual override
•Selectable valve actuators: ON-OFF, PWM
•Actuator voltage: 230 Vac
•Digital inputs: water thermostat, change of season, economy, window contact
•Analogue inputs: room temperature, inlet water temperature
•Regulator voltage: 230 Vac, 50/60 Hz
•Destratification cycle
•Filter clean timer
•CE certification
GENERAL INFORMATION
The T6580 microprocessor controls were designed to regulate heating and/or cooling within a room air-conditioning systems. The T6580 regulates the water valves, the fan speed, and the electrical resistance heater (where installed), in 2-pipe and 4-pipe fan coil systems.
Table 1. Ordering codes for the T6580 FCU Controller:
Model |
Description |
T6580A1008
FCU Controller 2/4 Pipe with S/W switch & Economy function
T6580A1016 LITE FCU Controller 2/4 Pipe
1 |
EN0H8560UK07 R0 |
RFC BASIC FAN COIL CONTROLLER
DESCRIPTION
INPUTS AND OUTPUTS
Digital Inputs
PRESENCE or TIMED PROGRAM:
The open contact indicates a presence in the room (room occupied) and the set point changes from economy to comfort. This contact can also be linked to an external timer system.
WINDOW:
The closed contact indicates that the window is open. This causes the valve(s) to close and the fan to stop (energy saving function). The anti-freeze protection function is automatically activated, with 4 °C as default.
SUMMER / WINTER SWITCHING:
A closed contact indicates that warm water is flowing through the pipes. This automatically changes the control from summer to winter mode. NB that the water temperature sensor can also be connected as an alternative for this feature to operate.
WATER TEMPERATURE THERMOSTAT:
A thermostat can be installed at the water outlet of the heat exchanger. This thermostat will automatically detect the presence of warm water in the system during the winter heating mode. The fan cannot start until warm water is detected. The temperature of the water must be set on the thermostat itself.
Analogue Inputs
RETURN AIR TEMPERATURE SENSOR:
When installed, this sensor has priority over the room unit internal sensor. The sensor is positioned at the air intake of the fan coil and is used as alternative to the room sensor.
WATER TEMPERATUR SENSOR:
This sensor can be set to either switch the summer / winter mode, or to enable fan operation, or both
A)Summer / winter switching: The sensor measures water supply temperature. When this drops below the limit value set in Parameter 14, the summer function mode is activated. When the water supply temperature is above the limit set in Parameter 15, the winter function mode is activated. Supply water between the upper and lower limits means that the thermostat stays OFF.
B)Enabling fan function: In 2 and 4-pipe fan coils the sensor is installed on the return pipe after the heating coil. This enables the fan function. Parameters 14 and 15 set the temperature that enables the fan to start.
C) Sensor set to enable both functions: In 2-pipe systems the sensor detects the supply water temperature and determines the summer or winter function mode. The fan function consent during the winter operating mode is given with a configurable delay time set in Parameter 24.
Analogue and digital outputs
FAN:
Fan speed control, from one to three speeds. A 230 Vac output, 50 Hz .Max 1.25 (3 peak)A.
HEATING VALVE:
Choice of a 230 Vac, 0.8 A command module for maximum four on-off or thermal actuators.
COOLING VALVE:
Choice of a 230 Vac, 0.8 A command module for maximum four on-off or thermal actuators.
2 |
EN0H8560UK07 R0 |
RFC BASIC FAN COIL CONTROLLER
TECHNICAL FEATURES
|
|
|
BASIC |
|
Regulation range |
10…30 °C |
|
9 |
|
Voltage |
230 Vac, 50/60 Hz |
|
9 |
|
Outputs (warm and cold |
PWM |
|
9 |
|
On-Off |
|
9 |
||
water) |
|
|||
|
|
9 |
||
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|
|
||
Selector or Keys |
|
|
|
|
Temperature levels |
Comfort / Economy |
Pushbutton |
9 |
|
Seasons |
Summer/Winter |
Pushbutton |
9 |
|
Fan |
Auto-0-1-2-3 |
5-position selector |
9 |
|
dial |
||||
|
|
|
||
Set point |
Temperature: 10,…30 °C |
Dial |
9 |
|
Analogue Inputs |
|
|
9 |
|
Room Temperature |
Air intake probe (remote) |
NTC10K |
9 |
|
Water Temperature |
Contact or immersion probe |
NTC10K |
9 |
|
Digital Inputs |
|
|
|
|
|
|
|
|
|
|
Consent thermostat/summer-winter |
|
9 |
|
|
switching/anti-condensation pump |
|
|
|
|
Window opening |
|
9 |
|
|
Presence/timed program |
|
9 |
|
Proportional band |
Selectable from 1 to 5 °C |
|
9 |
|
Dead Zone |
From 0 to 4 °C |
|
9 |
|
Applications |
Fan only |
|
9 |
|
|
2-pipe system with/without electrical |
|
9 |
|
|
resistance |
|
|
|
|
4-pipe system with/without electrical |
|
9 |
|
|
resistance |
|
|
|
Housing |
Single housing |
|
9 |
|
Automatic valve commands |
|
|
9 |
|
Local Communication |
|
|
No |
|
Centralized Communication |
|
|
No |
|
|
|
|
|
Table 2. Technical Features
3 |
EN0H8560UK07 R0 |
RFC BASIC FAN COIL CONTROLLER
FAN FUNCTION
The fan can function provided the consent thermostat is satisfied or the water temperature probe detects a temperature above the fixed value, where these inputs are present.
The fan is controlled through the 5 position-speed selector dial.
0 = fan OFF. In this position the valve is also closed.
Only the anti-freeze function is activated.
1 = always 1st fan speed
2 = always 2nd fan speed
3 = always 3rd fan speed
DESTRATIFICATION CYCLE
When the room probe is positioned at the air intake, and the setpoint is reached, the fan cycles according to the time settings made in Parameters 20 and 21 to enable correct reading of the room temperature.
FAN START DELAY DURING THE WINTER SEASON
During the heating action, the fan switches from OFF to the first speed, after the delay programmed in Parameter 22.
ELECTRICAL RESISTANCE
FAN SPEED |
|
|
HEATING PROP. BAND |
DEAD BAND |
COOLING PROP. BAND |
3 |
|
|
2 |
|
|
1 |
|
|
0 |
|
TEMPERATURE |
When using electrical resistance heater, (i.e., instead of the water heating system), the fan is started after the delay set in Parameter 23, starting as soon as the resistance heater was turned on. When the resistance heater turns off the fan continues to operate for the time set in Parameter 24.
HEATING & COOLING OUTPUT FUNCTION
WINTER SETPOINT |
SUMMER SETPOINT |
Fig. 1 Fan speed sequence
In the AUTO function, the fan and the valves are automatically activated. The fan output varies as a function of the difference between the room temperature and the set point.
Auto Position: the fan operates with the speed determined by the regulator.
In the heating mode, the fan will have speed 0 when Tamb > (set point ).
1st speed when (set point -30% of the BP) <Tamb < (set point).The minimum time at this speed is 2 minutes in normal conditions.
2nd speed when (set point -90% of the BP) <Tamb < (set point –30% of the BP).The minimum time at this speed is 2 minutes in normal conditions.
3rd speed when Tamb < (set point –90%).The minimum time at this speed is 2 minutes in normal conditions.
If a variation of more than the BP value occurs between the set point and the actual temperature, the minimum length of time in any one state is reduced to 5 seconds.
If the action is cooling, fan control will be opposite to that used during the heating action.
During the cooling cycle function, and if the set point is satisfied, the fan will continue to operate at speed 1 for 3 minutes, and will then stop.
Valve Opens
100% |
|
|
XpH |
|
|
|
0%
Set Temperature (o
2-PIPE FAN COIL WITH AN ON-OFF and PWM
ACTUATOR:
Fig. 2 :
2-PIPE FAN COIL WITH AN ON-OFF & PWM ACTUATOR
The set point is set to the upper point (to the lower point for cooling) of the proportional band, so the valve is closed when the temperature exceeds the set point.
The valve opening percentage is regulated by the P+I algorithm.
4 |
EN0H8560UK07 R0 |
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