Master Slave 1 Slave (n + 1) Master Slave 1 Slave (n + 1) Simplified Master / Slave operation GENERAL is a CIAT electronic control system designed to control non-independent air conditioning terminal units (fan coil units, UTAs, Cassettes, etc.) for 2 pipe, 2 pipe / 2 wire and 4 pipe applications using recycled air. It is available for control on water (with 2-way or 4-way valves). The drives electrothermal 24V valve actuators. control is available as a flush-mounting version factory fitted in a sill-mounted fan coil unit or wall-mounting version to be connected by the installer. control can operate in Master / Slave configuration. One master can control up to 15 slaves (recommended limit). Two wires lead from the master to the first slave, then two wires lead on to the second slave, etc. There is no need for any wires to leave the last slave. The master communicates the following information to the slaves: setpoints, air and water temperatures, on/off and speeds, economy input status, window contact status. If a slave has its own sensor (air or water), this measurement takes priority over the information from the master. Single-zone centralised cabinet control possible (see example application). DESCRIPTION units use Proportional Integral control, controlling the valve(s), electric heater and three-speed ventilation. selects automatically or manually the ventilation speeds. The control parameters (proportional band, integration time) are pre-set but two configurations can be selected on site (slow or fast). There are two adjustable setpoint temperatures, for heating (factory setting 19 C) and cooling (factory setting 23 C). Temperature settings can be modified on a range of ±6 K. The heating and cooling stages start automatically (neutral zone 3 to 6K, factory setting 6K). The integrates all calculations. The control unit is used to adjust the setpoint within the predefined range and turn the unit on or off. Turning the unit off guarantees a frost protection temperature (setpoint 8 C). A window contact is used to confirm a change to frost protection operation. An economy contact can be used to set reduced mode. It may be used in conjunction with a programmable timer, key, etc. (setpoints reduced by 5 K). If using a clock, consult "single centralised zone control". See our user's brochure for more details. AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.511 A 1
RECYCLED AIR APPLICATION TERMINAL UNITS Valve KVS = 1.6 max. G 1/2" max. Max. water flow rate 1000 l/h CONTROL ASSEMBLY PI regulator, with factory parameter settings and wiring. Terminal with potentiometer and Comfort / Stand by switch. 24V valve with electrothermal actuator- no cocks. Terminal : - V: set in, mounted on the unit - H: wall-mounted to be wired by the installer V H MAJOR 300 Auxiliary drain pan included with fuse cut-out and valves factory-fitted MAJOR 2 COADIS 2 COADIS SLIM COADIS COMFORT UTA Compact UTA Standard Cassette MELODY Without fuse cut-out and valve kit delivered separately 2-pipe system - Cooling only >1 x 2-way valve V202F V210F E037737 E038342 C061395 >1 x 4-way valve* V203F V211F E037796 E038350 C061409 - Heating only >1 x 2-way valve V202C V210C E037737 E038342 C061395 >1 x 4-way valve* V203C V211C E037796 E038350 C061409 - Heating / cooling > 1 x 4-way valve with change-over fitted* V204 V212 E038164 E038369 C061417 2 pipe system + max. 2800 W electric Relays included - Cooling + electric with neutral zone > 1 x 2-way valve V205 V213 E038172 E038377 C061433 > 1 x 4-way valve* V206 V214 E038180 E038385 C061441 - Heating / cooling+ electric > 1 x 4-way valve with change-over fitted* V207 V215 E038199 E038393 C061468 - Supplement for electric heater power above 2800 W and up to 4600 W E038555 INCLUDED 4 pipe system > 2 x 2-way valves V208 E037516 E038326 C061476 > 2 x 4-way valves* V201 V209 E037680 E038334 C061484 Compulsory supplements for valves with KVS > 1.6 For : UTA 295/04-370/44 For : UTA 370 / 66 MAJOR 2 434 et 435 MELODY 63-122 - 123 1 x 4-way valve* KVS 2.5 - G 3/4" 1 x 4-way valve* KVS 4 - G 3/4" E038407 - Max. water flow : 2500 l / h 1 x 2-way valve KVS 2.5 - G 3/4" 1 x 2-way valve KVS 4 - G 3/4" E044008 - Max. water flow : 2500 l / h Reductions for units with "Slave" function only Remove user's terminal E038296 Remove any change over sensor E038318 Assistance with commissioning recommended E002003 Flat rate travelling expenses (mainland France) + Intervention supplement for each unit E002038 *3-way + by-pass valve 2 AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.511 A
SINGLE CENTRALISED ZONE CONTROL This application example enables a zone containing up to 50 terminal units to be controlled with a control loop. Pilot loops Example.A Application A : centralised control for independent office Integrated Office 1 Office 2 Terminal (2) Terminal (2) Integrated terminal bus To other offices C/O(1) Example.B Application B : single zone centralised control for one area Economy clock Integrated Anti-freeze protection clock Electrical cabinet bus Sensor Sensor (1) Change over sensor for 2-pipe reversible heat/cold application (2) If wall terminal: sensor only on the terminal (H) If built-in terminal: sensor to the fan coil inlet (V) The terminal units (fan coils or UTA) are all independent and fitted with s. A pilot control loop, fitted in an electrical cabinet outside the offices, allows a centralised remote control. This pilot control loop feeds an extra programmed and a terminal. This control loop includes an extra-parametered regulator and a terminal connected to this regulator. This terminal allows: - the setting temperature adjustment, factory adjustment at the medium point, heating setpoint: 19 C, cooling setpoint: 25 C, modifiable on a scale of ± 6K. - the automatic or manual ventilation speeds regulation: If the auto-speed is selected on the cabinet terminal, then the unit potential terminals can choose a manual ventilation speed. If a manual speed is selected on the cabinet terminal, then the unit potential terminals are fixed on this selected speed. - the operating mode adjustment: Comfort or frost free. If the is in the frost free position, the units potential terminals are blocked on stop. A clock can be wired to this pilot to program Comfort / Economy modes. A second clock can be wired to program anti-freeze modes during office vacations for example (weekends, holidays, ) Two applications are available: A : Centralised control for independent offices. The independent terminal units are fitted with a terminal and a temperature sensor, users will be allowed to change the temperature set-point within ±2 C of the value sent by the pilot, switch on the anti-freeze mode by the on/off button, and control manually fan speeds. Master/Slave groups per office cannot be re-created in this function. B : Centralised single-zone control Each independent terminal unit has its own temperature sensor. All commands are managed by the pilot. Note: For more technical details, consult us. AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.511 A 3
and settings Control on water, RECYCLED AIR APPLICATION TERMINAL UNITS Pilot loop (to integrate in an electrical cabinet): Terminal Programmable timer module Digital display programmable clock module (plan 2 modules). Opening and closing control of one or several independent circuits according to an hourly program, memorized and indicated by the user (can be associated to any regulation fitted with an auxiliary contact: V20C, and 0 ) Changeover sensor (for 2-pipe reversible units) Pipe adapter control loop fitted on the terminal unit: valve KVS = 1.6 max. G 1/2" max. Max. water flow rate 1000 l/h CONTROL ASSEMBLY PI regulator, with factory parameter settings, wiring and testing. Terminal with potentiometer, Comfort / Stand by / 3 speeds switch (except application B) 24V valve with electrothermal actuator- no cocks. Terminal: - V: set in, mounted on the unit Application A Application B - H: wall-mounted to be wired by the installer - S: Without terminal, with air inlet sensor V H S 2-pipe system - Heating only or Cooling only or Heating / cooling >1 x 2-way valve >1 x 4-way valve* - Cooling + electric with neutral zone or heating/cooling + electric with dead zone > 1 x 2-way valve > 1 x 4-way valve* - Supplement for electric heater power above 2800 W and up to 4600 W > 2 x 2-way valve > 2 x 4-way valve* MAJOR 300 / MAJOR 2 / COADIS2 / COADIS SLIM / COADIS COMFORT Cassette MELODY UTA Compact / UTA Standard 2-pipe 4-pipe 2-pipe + 2-wire 2-pipe 4-pipe 2-pipe + 2-wire E040169 E040142 E040185 7036674 703676 7036677. 7021469 0596095 5204001 5203017 MAJOR 300 MAJOR 2 / COADIS 2 COADIS SLIM COADIS COMFORT UTA Compact UTA Standard Auxiliary drain pan included with fuse cut-out and valves factory-fitted Cassette MELODY Without fuse cut-out and valve kit delivered separately E044423 E044331 232 240 E044458 E044466 252 C061395 E044474 E044482 233 241 E044490 E044504 C061409 253 2 pipe system + max. 2800 W electric 235 243 236 244 230 238 231 239 Extra compulsory elements for valves with KVS>1.6 For: UTA 295/04-370/44 For: UTA 370 / 66 MAJOR 2 434 and 435 MELODY 63-122 - 123 1 x 4-way valve* KVS 2.5 - G 3/4" 1 x 4-way valve* KVS 4 - G 3/4" - - Max. water flow: 2500 l / h 1 x 2-way valve KVS 2.5 - G 3/4" 1 x 2-way valve KVS 4 - G 3/4" - Max. water flow: 2500 l / h Assistance with commissioning recommended Flat rate travelling expenses (mainland France) + Intervention supplement for each unit *3-way +by-pass valve E044512 E044520 E044539 E044547 C061433 E044555 E044563 E044571 E044598 C061441 E038555 4 AIR CONDITIONING - HEATING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 08.511 A 255 256 4-pipe system 250 251 E044601 E044628 E044636 E044644 C061476 E044652 E044660 E044679 E044687 C061484 E038407 E044008 E002003 E002038
This document is non-contractual.as part of its policy of continual product improvement, CIAT reserves the right to make any technical modification it feels appropriate without prior notification. Head office Avenue Jean Falconnier - B.P. 14 01350 - Culoz - France Tel.: +33 (0)4 79 42 42 42 - Fax: +33 (0)4 79 42 42 10 info@ciat.fr - www.ciat.com CIAT Service Tel.: +33 (0)4 79 42 42 90 - Fax: +33 (0)4 79 42 42 13 Compagnie Industrielle d Applications Thermiques - S.A. with a registered capital of 26 000 000 - R.C.S. Belley B 545 620 114