Coster XTU 614 Manual

Temperature and humidity controller for one-battery air handling unit

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TEMPERATURE AND HUMIDITY CONTROLLER
FOR ONE-BATTERY AIR HANDLING UNIT
OPTIONAL
BUS
C
XTU 614
C1 Eng.
• Temperature & relative humidity control in air handling units
• 24-hour, 7-day, and annual programming
• Power supply 24 V~
DIN rail mounting
,
• Communication systems:
– C-Bus: XTU 614 is already wired for Telemanagement
To enable Telemanagement use C-Bus Plug-in, model ACB 460 C1 or later,
to be ordered separately as an accessory.
1. APPLICATION
XTU 614 is designed for temperature and humidity control in air handling units composed of:
• 1 battery for hot/chilled water or vapour with 3-wire modulating controll
or
or
• 1 adiabatic humidifying unit with On-Off control
or
• 1 air mixing unit with 0...10 V– air damper actuators
or 1 heat regenerator with 0...10 V- or On-Off control (CSV 304 converter).
The controller can be included in a Telemanagement system through the C-Bus connection.
2. FEATURES
The main features of XTU 614 are as follows:
• One 3-wire modulating output, or 2-stage On-Off (two equal loads) or 3-stage (two unequal loads) outputs,
configurable for:
– winter and summer room temperature control with optional summer external compensation; flow limits to
prevent cold drafts, hot air stratification and condensing in the air ducts.
– flow temperature control (heating or cooling) with optional winter and summer compensation
– pre-heating temperature control according to room temperature and humidity
– battery frost protection temperature control
• One On-off output for winter adiabatic humidifying unit control
• One 0...10 V- progressive output, configurable forr:
– control of air mixing according to temperature, with minimum limit opening external air
– external air control for room dehumidification with compensation of dew point temperature on glass windows
and with minimum limit external air
– On-Off control heat regenerator according to room-outside temperature comparison
– adjustment vapour humidifier by means of 0...10 V- control
• One 3-wire On-Off output for manual or automatic season switching.
• Two On-Off outputs for control fan and pump according to timed program in use
• Winter battery frost protection temperature control
• Programming by means of 25 24-hour programs, five 7-day programs, and 25 annual period programs
• Variation of temp. and humidity set-points by remote control
• Alarms for short and open sensor circuits and for system and equipment malfunction.
• Enabled for data transmission via C-Bus with local PCs or remote Telemanagement PC.
To enable data transmission and Telemanagement use C-Bus Plug-in type ACB 460 C1 or later
To communicate locally with a PC use test Plug-in ACX 232
3. ACCESSORIES
No.
Description
1
Discharge air temperature duct sensor
1
Outside air temperature sensor - duct type
or
wall type
1
Extract air temperature sensor - duct type
or
room type
1
Pre-heating temperature sensor - duct type
or
dew point
1
Room relative humidity and temperature sensor
or duct relative humidity sensor
or duct relative humidity sensor (swimming pools)
1
Battery frost protection temp. sensor - cable type
or
immersion type
1
0...10 V – to 2-stage On-Off converter
1
Temperature set-point adjuster
1
Relative humidity set-point adjuster
1
Outside air minimum distance positioner
Accessories for Telemanagement
1
Plug-in for communicating via C-Bus
We reserve the right to make changes without notice
COSTER
electric batteries with 1-,2-, or 3-stage On-Off control
direct expansion batteries with 1- or 2-stage On-Off control
vapour-operated, with 0...10 V- control (alternative to air damper control)
STA 010
STA 001
SAE 001
STA 010
SAB 010
STA 010
STV 010
SAU 012
SUR 012
SUR 051
SAF 010
SIH 010
CSV 304
CDB 100
CDB 200
PCS 04
ACB 460 C1
E 134 - XTU 614
Type
Application Range
0...60 °C
–30...+40 °C
–30...+40 °C
0...40 °C
0...40 °C
0...40 °C
0...40 °C
0...40 °C ; 20...80 %
20...80 %
10...90 %
0...40 °C
0...40 °C
± 5 °C
± 10 %
C1 Eng. 22.11.10 AM REV. 03
E 134
22.11.10 AM
REV.03
Code
Data sheet
Sensing element t°
NTC 10 kΩ
B1
NTC
1 kΩ
B2
NTC
1 kΩ
B2
NTC 10 kΩ
B3
NTC 10 kΩ
B3
NTC 10 kΩ
B4
NTC 10 kΩ
B4
NTC 10 kΩ
B3-B6
B6
B6
NTC 10 kΩ
B7
NTC 10 kΩ
B7
Y
Rt°
RH
Rs
1

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Summary of Contents for Coster XTU 614

  • Page 1 1. APPLICATION XTU 614 is designed for temperature and humidity control in air handling units composed of: • 1 battery for hot/chilled water or vapour with 3-wire modulating controll electric batteries with 1-,2-, or 3-stage On-Off control direct expansion batteries with 1- or 2-stage On-Off control •...
  • Page 2: Technical Data

    COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 default values in bold print Heating (flow) (B1) 1…10…40 °C 4. TECHNICAL DATA Various temp. Proportional Band multipliers: • Electrical Heating flow (B1+B3) PB amb x 0.5…5…20 Power supply 24 V ~ ±...
  • Page 3: Wiring Diagram

    ) must be : As control cs + c1 cs – Control of manual or centralised season switching or by controller with season switch type XTU 614. c1 – On-Off switch for manual control or by fan heavy duty switch,...
  • Page 4 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 8. WIRING Proceed as follows : • Separate base and cover • Mount base on DIN rail and check that securing elements (5. ) hold it firmly in place.
  • Page 5 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 10. COMMUNICATION C-Bus Telemanagement Communication (for more detailed information please see Technical Sheet T 021) XTU 614 provides: - remote Telemanagement by means of C-Bus Plug-in type ACB 460 C1 - local communication (e.g.
  • Page 6 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 11. TEMPERATURE AND HUMIDITY CONTROL – EXAMPLES – Room temperature and humidity control B2 – Outside temp. sensor (for compensation only) B3 – Room or extract air temp. sensor XTU 614 B6 –...
  • Page 7 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 12. USE OF YS OUTPUT– EXAMPLES – Temperature comparison air damper optimization 24 V ~ B2 – Outside temp. sensor B3 – Room or extract air temp. sensor 24 24 0 0 Ys –...
  • Page 8 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 13. USE OF Y OUTPUTS– EXAMPLES – 1 Heating modulating battery – 1 Humidifying On-Off unit 24 V ~ B1 – Discharge air temp. sensor B2 – Outside temp. sensor (for compensation) B3 –...
  • Page 9 X X X X X X X X X Y - S u m : C O O L I N G 14. 3 - OR 4 - BATTERY SYSTEM CONTROL (XTU644 + XTU 614) – EXAMPLES – 1 Winter pre-heating with frost protection control modulating battery –...
  • Page 10 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 – 1 Winter pre-heating modulating battery with frost protection control – 1 Summer cooling/dehumidifying modulating battery – 1 Winter post-heating modulating battery – 1 Summer post-heating On-Off battery –...
  • Page 11: Operation

    C1 Eng. 22.11.10 AM REV. 03 15. OPERATION XTU 614 is a microprocessor-based digital controller for temperature and relative humidity control in air handling units composed of: – 1 unit with 3-wire modulating control, or 1, 2 or 3-stage On-Off control which can be: Pre-heating;...
  • Page 12 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 P b D a m p e r s PB Air dampers = PB room heating x 1.0 (= ± 2 °C) P b H e a t R o o m x 1 . 0 d T R e c u p e r a t o r = PB recuperator = PB room heating x 1.0 (=±...
  • Page 13: Operating Modes

    COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 To prevent hot air stratification during the heating stage it is possible to prevent the heating di- H e a t i n g L i m i t M a x scharge air temp.
  • Page 14: Outside Temperature Compensation

    COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 • With with switch cs on winter (D-E1 closed) S e a s o n S w i t c h i n g F R C O N T R O L s s + c 1 mode is : –...
  • Page 15 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 18. RELATIVE HUMIDITY CONTROL The function is only enabled if detector B6 is connected. D e t e c t o r s L a y o u t –...
  • Page 16: Heat Pump Control

    COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 20. FROST PROTECTION TEMPERATURE CONTROL The function is enabled only if sensor B7 is connected. D e t e c t o r s L a y o u t –...
  • Page 17: Control Outputs

    COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 22. CONTROL OUTPUTS Control output Y The Y outputs can be configured as: • Y - MODULATING = modulating control for 3-wire valves or con- vertors of 3-wire signals into 0...10 V– direct...
  • Page 18 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 23. OUTPUT Ys Output Ys with 0...10V– control signal is only enabled when the Mv fan is operating, and can be used for: – AIR DAMPERS TEMP. = Control air damper according to temperature –...
  • Page 19 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 24. SEASON SWITCHING The controller switches the action of output Y and the position of season control Ycs depending on the choice: NO; WINTER; SUMMER; BY cs CONTROL; BY cs + c1 CONTROL; AUTOM. BASED ON OUTSIDE TEMP.;...
  • Page 20 E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 25. PROGRAMS & PERIODS WITH DATES XTU 614 can start and shut down the air handling sites using: – 25 24-hour programs – 5 7-day programs – 25 annual periods with dates...
  • Page 21: Complementary Functions

    COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 26. COMPLEMENTARY FUNCTIONS Transmission speed The speed of the communication bus (C-Bus) can be chosen from: 1200, 2400, 4800, 9600 bouds. The speed must be chosen above all on the basis of the other devices on the site and on the type C B U S s p e e d of modem use.
  • Page 22 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 27. ALARMS The controller processes two types of alarm: – alarms related to functional irregularities affecting the controller (LED 6. ) and the sites con- trolled (LED 6.
  • Page 23 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 29. SEQUENCE OF DISPLAY PAGES ( data and functions as stored at delivery S i t e - - - - - - - - - - - -...
  • Page 24 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 M0. NORMAL USE Ref. Display Description Notes Sect. S i t e - - - - - - - - - - - - Site name. Set in M3.
  • Page 25 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 M0. NORMAL USE Ref. Display Description Notes Sect. M u - H U M I D I F . : 1 0 0 % Output Mu load: humidification F R O S T P R O T .
  • Page 26 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 M2. ADJUSTMENT Ref. Display Description Notes Sect. T e m p e r . R o o m Heating proportional band in ± °C. Base value fom which controller, using multipliers P r o p .
  • Page 27 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 M3. SETTING Ref. Display Description Notes Sect. D e t e c t o r s L a y o u t Configuration of connected sensors (outputs 1 : Flow temp. sensorsB1.
  • Page 28 COSTER E 134 - XTU 614 C1 Eng. 22.11.10 AM REV. 03 M4. TESTING Ref. Display Description Notes Sect. O u t p u t : Y M O D U L Select outputs to be tested Output selection: S t a t u s : I D L E Select output status Y MODUL.

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