Page 2
Rapid guide Remote On - Off Cool Signals CN33 CN24 Antifreeze heater...
Page 3
Modular unit Unit addressing - ENC4 UNIT 1 - MASTER 2 - Slave 3 - Slave 16 - Slave Addr. ENC4 Controller addressing - MENU + ► 3 sec 16 unit max: master unit + 15 slave unit UNIT 1 - MASTER 2 - Slave 3 - Slave 16 - Slave...
Page 4
Dear Customer, We congratulate you on choosing this product Clivet has been working for years to offer systems able to assure the maximum comfort for a long time with highly-reliable, efficient, high-quality and safe solutions. The target of the company is to offer advanced systems, that assure the best comfort and reduce energy consumption as well as the installation and maintenance costs for the entire life-cycle of the system.
Page 5
Safety considerations Introduction Information on refrigerant gas Before installing Handling Selecting the installation site Installation Accessing the unit components Water connections Unit in modular configuration Electrical connections Modbus Start-up Control Troubleshooting Maintenance Disposal Residual risck Technical data...
1 SAFETY CONSIDERATIONS Meaning of the symbols DANGER, The precautions in this manual are divided as indicated on the WARNING, CAUTION and NOTE side. DAN GER They are important, so make sure you follow them closely. It indicates a situation of imminent Please read these instructions carefully before installing.
Page 7
water leaks, electric shock, fire or the unit falling from its support. Install the unit on a structure that can withstand its weight. An insufficiently robust structure may lead to the unit falling causing possible lesions. Perform installation operations considering the possibility that strong winds, hurricanes or earthquakes may occur.
Page 8
Be aware that refrigerants are odourless. Place the unit on the ground. The earth resistance should comply with the law and local regulations. Do not connect the earth cable to gas or water mains, lightning rods or phone earth cables. ...
Page 9
If installing multiple units in a centralised manner, adjust the electric load on the various phases. Do not connect multiple units to the same phase of the three-phase supply. The following subjects may use the unit if supervised or instructed on safe usage and capable of understanding the possible dangers: children who are minimum 8 years old, people with no experience or knowledge, people with limited...
Page 10
2 INTRODUCTION Saftey Operate in compliance with safety regulations in force . Use single protection devices: gloves, glasses, helmet etc. Manual Pay particular attention to: The manual provides correct unit installation, use and maintenance. warnings / prohibitions / danger indicating particularly important It is advisable to read it carefully so you will save time during operations or information, operations...
Modification All unit modifications will end the warranty coverage and the manufacturer responsibility. Breakdown/Malfunction Disable the unit immediately in case of breakdown or malfunction. Contact a certified service agent. Use original spares parts only. Using the unit in case of breakdown or malfunction: voids the warranty ...
Unit identification The serial number label is positioned on the unit and allows to indentify all the unit features. The matriculation plate shows the indications foreseen by the standards, in particular: unit type serial number (12 characters) year of manufacture ...
Page 13
3 INFORMATION ON REFRIGERANT GAS This product contains fluorinated greenhouse gases covered by the Kyoto protocol. Do not discharge gas into air. Refrigerant type: R32 Characteristics of R32 refrigerant: minimum environmental impact thanks to the low Global Warming Potential GWP low flammability, class A2L according to ISO 817 ...
4 BEFORE INSTALLING Reception Before any work read: You have to check before accepting the delivery: Chapter. MAINTENANCE SAFETY That the unit hasn’t been damaged during transport WARNINGS FOR OPERATIONS ON That the materials delivered correspond with that indicated on ...
Page 15
5 HANDLING Check that all handling equipment complies with local safety regulations (cran, forklifts, ropes, hooks, etc.). Provide personnel with personal protective equipment suitable for the situation, such as helmet, gloves, accident-prevention shoes, etc. Observe all safety procedures in order to guarantee the safety of the personnel present and the of material.
6 SELECTING THE INSTALLATION SITE Positioning Installation must be in accordance with local regulations. If they do not exist, follow EN378 . During positioning consider these elements: customer approval unit weight and bearing point capacity safe accessible position ...
Page 17
Avoid therefore: obstacles to the airflow exchange difficulties leaves or other foreign bodies that can obstruct the exchange batteries winds that hinder or favour the airflow heat or pollution sources close to the unit (chimneys, extractors etc) stratification (cold air that stagnates at the bottom) ...
Page 18
Functional spaces Safety Zone Do not smoke or use open flames within this area ≥ 800 ≥ 800 ≥ 2000 ≥ 1100 ≥ 2000 ≥ 6000 ≥ 800...
7 INSTALLATION Structure for installation. 1 Both steel and concrete bases may be suitable. 2 The base must have a height of at least 300 mm from the ground so as to provide sufficient room to install hydraulic pipes and electrical connections. 3 Verify that the base and bearing points are level.
Page 20
Size 16.2 - 24.2 Size 30.2 - 40.2 Piping inlet/outlet side Electrical panel side Anchoring bolts...
Page 21
8 ACCESSING UNIT COMPONENTS By means of a detachable service panel, the maintenance personnel can easily access the interior components of the unit. Panel 1 Access to the refrigerant safety valve, water pipe, water-side heat exchanger and gas-liquid separator compartment. Panels 2-3-4 Access to the hydraulic compartment and electrical parts.
Page 22
Size 16.2 - 24.2 Air supply Superior lid Electrical panel Compressor Evaporator Condenser Water inlet Air return Water outlet Controller Safety valve...
9 WATER CONNECTION Hydraulic system The pipes must be designed and manufactured to limit pressure drops as much as possible, i.e. optimise performance of the system. Keep the following to a minimum: overall length The warranty does not cover damages caused by limestone number of bends ...
Water filter Must be installed immediately in the water input of the unit, in a position that is easily accessible for cleaning. The filter never should be removed, this operation invalidates the guaranty. Recommended filter : 0,5 mm (30 mesh) Minimum capacity of the exchanger The minimum water flow is indicated in the technical data.
Storage tank Option Vent Drain On-Off / Inverter pump Option...
Page 27
10 MODULAR CONFIGURATION UNITS System diagram with inverted return Modular configuration units connection Maximum 16 total units. Maximum 4 units in the same water branch. The modular system is controlled by the MASTER unit (address=0), → Electrical connections All units must be electrically connected to each other with 3- ...
Page 28
Input and output manifolds Cooling (Kw) Piping water IN-OUT DN40 DN50 DN65 DN80 DN100 DN125 DN150 1300 DN200 1300 2080 DN250 Operations sequence Before starting the unit pump : 1 close all vents in the high points of the unit’s water circuit. 2 close all drain shut-off valves in the low points of the unit’s water circuit: Heat exchangers...
11 ELECTRICAL CONNECTIONS The characteristics of the electrical lines must be determined by specialized personnel able to design electrical installations; moreover, the lines must be in conformity with regulations in force. The protection devices of the unit power line must be able to stop the presumed short circuit current, whose value must be determined in function of system features.
Electric line input Fix the cables: if vacated, they may be subject to tearing. The cables must not touch the compressor and the refrigerant piping ( they reach high temperatures ). Use eyelet wire terminals. If the length of the cable exceeds the value specified in the chart or if the voltage drop exceeds the threshold, increase the section of the power supply cable in compliance with relevant regulation.
Page 31
Keypad remote connections The keypad is wired on the unit. It can be disassembled and installed remotely. Maximum distance 40 m. Power supplied by the unit. Maximum distance 300 m. Separate power supply Power supply provided with the unit. Alarm signal - ALARM Max current (RMS): 5A The door is closed with alarmed unit.
Page 32
0-F indicates the master unit and 1-F indicates the slave units (modular ENC4 unit configuration) 0 factory settings WSAT-YES S5-2 WSAT-YSi Control of the unit from the display on the machine Valid for S5-3 OFF (factory setting) S5-3 Controlling the unit through remote On-off Valid for S5-3 ON...
Page 33
MODULAR CONFIGURATION UNITS Modular unit communication bus Set the correct date and time on each unit before connecting them to the network. Set multiple configuration on each unit. The modular configuration is made up of two networks: the controller network and the unit network (main keypads). Each network can have max 16 addresses (0 to 15) and must be addressed separately.
Page 35
12 MODBUS Communication specifications: RS-485 Function codes Protocol :ModbusRTU:9600,8,N,1 query Baud rate: 9600bps reading Data bits: 8 Data bits single register writing Parity bit:None Parity multiple register writing Stop bit: 1 stop bit Connections Connect on the back of the controller. - H1 Modular unit: connect the modbus to the MASTER unit port.
Page 36
Reading and writing register; 100 - 109 read only, 110 reading and writing. Address function notes Double setpoint Enable/Disable 1st setpoint in cooling 5~20°C 2nd setpoint in cooling 5~20°C not used not used temperature compensation in cooling Enable/Disable point 1 temperature compensation in cooling 25~30°C point 2 temperature compensation in cooling 35~40°C...
Page 37
Address function notes 247+(Address)*100 Outside temperature 1°C 248+(Address)*100 Compressor speed 249+(Address)*100 Compressor input 250+(Address)*100 Fan 1 Speed Current speed 251+(Address)*100 Fan 2 Speed Current speed 252+(Address)*100 Fan 3 Speed Current speed 253+(Address)*100 EXVA Current position 254+(Address)*100 EXVB Current position 255+(Address)*100 EXVC Current position 256+(Address)*100...
Page 38
Address function notes 279+(Unit Address)*100 SV6 status 0 = OFF, 1 = ON 280+(Unit Address)*100 Compressor 2 absorption 281+(Unit Address)*100 Unit capacity 282+(Unit Address)*100 not used 283+(Unit Address)*100 Anti-freezing electric heater 0 OFF 、1 ON 284+(Unit Address)*100 Remote control 0 OFF 、1 ON Read from NO.0 ODU address 286+(Unit Address)*100 Pump control type...
Page 40
13 START-UP General The operations indicated should be performed by qualified technicians with specific training on the product. The electric, hydraulic connections and the other work of the system are the responsibility of the installer. Upon request, the service centres can perform the start-up; Please agree upon the start-up data with the service centre with sufficient advance.
Preliminary checks Unit power supply OFF Yes / No safe access suitable frame to withstand unit weight + people weight functional clearances condensation drain air flow: correct return and supply (no bypass, no stratification) considered level to be reachable by snow considered main winds Lack of chimneys/corrosive atmospheres/pollutants Structure integrity...
Start-up sequence Unit power supply ON Yes / No Compressor carter resistances operating at least since 8 hours Off-load voltage measure Phase sequence check Pump manual start-up and flow check refrigeration circuit shut-off valves opening (if applicable) Unit ON load voltage measure If remote On-Off: set dip-switch S5-3 on ON If units in modular configuration...
Cooling circuit 1 Visually inspect the refrigerating circuit: the presence of oil stains can by a symptom of leakage (caused e.g. by transportation, handling or other). 2 Verify that the refrigerating circuit is in pressure: Using the unit manometers, if present, or service manometers. 3 Make sure that all the service outlets are closed with proper caps;...
Compressor casing resistances Connect the compressor oil heating resistances at least 8 hours before the compressor is to be started: at the first unit start-up after each prolonged period of inactivity 1 Power the heaters: isolator switch on 1 / ON. 2 Check the power consumption of the resistances to make sure that they are functioning.
Page 45
Check the water flow -rate of the evaporator Check that the difference between the temperature of the exchanger's input and output water corresponds to the potential according to this formula: unit cooling power (kw) x 860 = Dt (°C) x flow rate (L/h) The cooling power is shown in the GENERAL TECHNICAL DATA chart included in this manual, referred to specific conditions, or in the...
In the event of a compressor breakdown due to operating in the above-mentioned conditions, the warranty shall not be valid and Clivet spa declines any responsibility. Periodically check the average operating times and frequency of compressor start-ups: indicatively the minimum thermal load must be such as to require a compressor to operate for at least ten minutes.
Page 47
UNITS IN MULTIPLE CONFIGURATION Complete system management is carried out by the master unit, identified by address 0. Thermoregulation takes place on the supply temperature of the entire system (Tw). At switch-on, when a load is requested, the units are switched on in sequence based on their address, in numerical order.
Page 48
14 CONTROL UNLOCK To lockout / unlock. To modify current setpoint MENU To open the various menus from the HOME screen. To move the cursor, change the selection or change the set value.The parameter can be quickly changed with a long press.
Page 49
Setpoint Number of parallel units (modular configuration) Mode : cooling Controller off Weekly timer active Compressor use value Compressor in operation Fan use value Fan in operation Pump in operation Auxiliary electric heater in operation. Manual antifreeze or defrosting in operation Remote control: the unit is set from the keypad to be controlled by a remote terminal or by a remote switch Wired controller...
Menu structure Press “UNLOCK” for 3 seconds to unlock the keypad. Modo Mode Raffreddamento Cool Menu utente User menu Interrogazione Query Visualizzazione stato State query Selezionare indirizzo da interrogare Select address Stato di funzionamento Operation state Modo di funzionamento Running mode Modo silent corrente Current silence mode Visualizzazione temperatura...
Page 51
Menu installatore * Project menu * Service menu * Service menu * Accesso storico allarmi / reset / ecc. Access alarm log/ reset / etc. Menu installatore - project menu* Project menu* Impostare l’unità Set unit air-conditioning Impostare unità parallele Set parallel unit Set DHW time (riservato) Set DHW time (reserved)
Page 52
Namely: Press or to adjust the values, scroll through the lists Press or to select Press OK to go to the next menu Press BACK to go to the previous menu Unlock/lock To lockout the screen, press UNLOCK for 3 sec. Switch-on/off Press ON/OFF to switch-on/off Units in modular configuration...
Page 53
Set MODE and TEMPERATURE Press MENU Press or to sel ect MODE Press OK Press or to selec t the mode or the temperature Press or to ad just the mode and temperature. Press OK to c onfirm. If no operations are performed for more than 60 sec onds, the system automatic ally saves the settings and returns to the home page.
Page 54
USER MENU - QUERY Only if multiple units are connected to the network To display data for the units in the network: Press MENU Press or to select QUERY Press or to select the unit’s address Press OK If STATE QUERY is selected:the unit’s address is shown at top right (only for units in modular configuration)
Page 55
USER MENU - TIMER Press MENU Press TIMER Select one of the 3 c ategories proposed If “DAILY TIMER” is sel ected , the “WEEKLY SHEDULE” cannot be ac tivated and vice versa. If the unit is c ontrolled via a remote On -Off or Mod bus, DAILY and WEEKLY timers are disabled .
Page 56
TIMER menu - WEEKLY TIMER Select WEEKLY SCHEDULE Press or to selec t the d ay Press OK to c onfirm Select WEEKLY SWITCH Press or turn ON (access to DAILY TIMER) Press OK to c onfirm Press ...
Page 57
USER menu - DOUBLE SETPOINT Press or ENABLE or DISAB LE Press or to sel ect SETPO INT Press or to adjust the parameters menu SNOW-BLOWING SWITCH” Reserved USER menu - SILENT SWITCH Press or to select the need ed mode.
Page 58
USER menu - TEMPERATURE COMPENSATION Press or to select: COOL MODE The water temperature is adjusted based on the outdoor tem- perature T4. COOLING Tw s' The following parameters can be adjusted: T4_cool_1 (25~30ºC) of f set _c ...
SERVICE MENU Pump c ontrol Press or to select: Pump Control, under “SERVICE MENU” page. Note: PUMP ON-OFF TIME is reserved FORCED PUMP OPEN Select the needed pump address, then Yes or back the selection. INV PUMP SETTING Can only be set under a single pump.
15 TROUBLESHOOTING Alarm reset: turn the unit off and on again. NO TE Before resetting an alarm, identify and remove the cause generating that. Repeated resets can cause irreversible damage. Master unit If the Master unit’s power supply is disconnected, all of the group's units stop.
Page 61
Error code Description troubleshooting EEPROM error - main board EEPROM error - inverter A module EEPROM error - inverter B module The three phases must be present at the same time and offset by 120°Restoring the power supply clears phases sequence - control from main board the error.Note: the power supply is checked only in the initial switch-on phase.
Page 62
Turn the power off to reset it.Active 120 seconds no flow (manual reset) Ddained system from the start-up antifreeze probe Taf1 fault antifreeze probe Taf2 fault Slave unit module reduction compressor drain temperature probe A compressor drain temperature probe B refrigerant temperature probe T6A refrigerant temperature probe T6B return water temperature probe...
Page 63
If the protection intervenes 3 times in 60 minutes, turn the power off to reset it. Verify: T Inlet / outlet water temperature difference hat Twi-Two probes are positioned correctly in the well. The functioning of the circulation pump Flow within the allowed range Reserved winter antifreeze evaporator low pressure in cooling...
Page 64
protection L0 or L1 intervention 3 times in circuit A bus voltage (PTC) circuit B bus voltage (PTC) Reserved radiator temperature sensor Tfin1 radiator temperature sensor Tfin2 Reserved Reserved Detection begins 15 minutes after start-up, if a pressure sensor pressure lower than 0.3 MPa is detected.Not detected during defrosting.
Page 65
STATUSES DISPLAY Press UP on the main sheet Standby: unit address (88 to the left) + online number (88 to the right)On: frequency defrosting: dFdF unit address 0.xx unit size 1.xx number of units 2.xx 3.xx — Operation Mode (8: Off; 1: Cooling) 4.xx Mode Setting (8: Off;...
Page 66
electronic expansion valve opening B (/20) 26.xx electronic expansion valve opening C (/4) 27.xx 28.xx — low pressure L.xx overheating 30.xx intake temperature 31.xx Silent (1: silent mode; 2: super silent mode; 3: Standard mode) 32.xx static pressure 33.xx -- (reserved) 34.xx -- (reserved) 35.xx...
16 MAINTENANCE SAFETY WARNINGS FOR OPERATIONS ON UNITS CONTAINING R32 Area checks Before working on systems containing flammable refrigerants, perform safety checks to reduce the risk of combustion to the minimum. Before performing any reparation operations on the cooling system, comply with the following warnings.
Page 68
Make sure markings and symbols are always readable; cooling pipes or components must be installed in a position that makes improbable their exposure to substances that may corrode the components containing refrigerant, unless they are manufactured with material intrinsically resistant to corrosion or suitably protected against corrosion.
Page 69
Check that the detector is not a possible source of ignition and that it is suitable for the refrigerant. Leak detection equipment must always be set to an LFL percentage and calibrated depending on the refrigerant used, so the correct gas percentage (25% max) must be verified. Leak detection fluids are suitable for most refrigerants, although using detergents containing chlorine should be avoided as this substance may react with the refrigerant and corrode copper pipes.
Page 70
Electrically isolate the system. Before attempting the procedure, check that: The mechanical manipulation equipment is available, if necessary, to handle refrigerant tanks; All the personal protection equipment is available and employed correctly; The recovery procedure is monitored at all times by skilled personnel; ...
Page 71
2 Marking of equipment with symbols Compliance with local regulations 3 Disposal of equipment employing flammable refrigerants Compliance with national regulations 4 Storage of equipment/devices The equipment must be stored in compliance with the instructions provided by the manufacturer. 5 Storing packed (unsold) equipment Packing must be performed in such a way that mechanical damage to the equipment inside it does not cause refrigerant leaks.
Page 72
Saftey Operate in compliance with safety regulations in force . Use single protection devices: gloves, glasses, helmet etc. usare dispositivi di protezione: guanti, occhiali, elmetto ecc. General Maintenance must be performed by authorized centres or by qualified personnel The maintenance allows to: maintaining the unit efficient ...
Page 73
intervention frequency (months) Presence of corrosions Panel fixing Fan fixing coil cleaning Water filter cleaning water: quality, pH, glycol concentration check exchanger efficiency circulation pump Check of the fixing and the insulation of the power lead 10 earth cable check 11 Electric panel cleaning 12 power remote controls status 13 clamp closure, cable isolation integrity...
Unit booklet Foresee a unit schedule to keep trace of the interventions made on the unit. In this way, it will be easier to adequately schedule the various interventions and facilitate any troubleshooting. On the schedule note: date intervention description ...
Page 75
Compressor casing heater Check: closure Operation water side heat exchanger The exchanger must to be able to provide the maximum thermal exchange, therefore it is essential for the inner surfaces to be clean of dirt and build-up. Periodically check the difference between the temperature of the supply water and the condensation temperature: if the difference is greater than 8°C–10°C it is advisable to clean the exchanger.
Page 76
Air coil Accidental contact with the exchanger fins can cause cuts: wear protective gloves. The coil must allow maximum thermal exchange, therefore, the surface must be clear from dirt and scaling. It is recommended a quarterly cleaning of the coils, as the minimum.
17 DECOMMISSIONING Disconnection WARNIN G Before performing any operation, read the warnings found in the Maintenance chapter. Avoid leak or spills into the environment. Warning: Before disconnecting the unit, the following must be recovered, if present: Fire hazard refrigerant gas Flammable materials ...
RESIDUAL RISKS General In this section the most common situations are indicated,as these cannot be controlled by the manufacturer and could be a source of risk situations for people or things. Danger zone This is an area in which only an authorised operator may work. The danger zone is the area inside the unit which is accessible only with the deliberate removal of protections or parts thereof.
Page 79
If there is a fire the temperature of the refrigerant could reach values that in-crease the pressure to beyond the safety valve with the consequent possible projection of the refrigerant itself or explosion of the circuit parts that remain isolated by the closure of the tap. Do not remain in the vicinity of the safety valve and never leave the refriger-ating system taps closed.
Sound levels Standard mode Sound power level Sound Sound Sound levels refer to units with nominal test conditions. pressure power The sound pressure level refers to a distance level level SIZE Octave band (Hz) of 1 meter from the outer surface of the unit operating in open field.
Operating range Cooling - Size 16.2 - 20.2 - 24.2 - 30.2 - 35.2 - 40.2 Twu [°C] = Leaving exchanger water temperature Tae [°C] = External exchanger inlet air temperature 1. Normal operating range. Low water temperature function: Operating range where the use of ethylene glycol is mandatory in a percentage above to 10% Operating range where the use of ethylene glycol is mandatory in a percentage above to 20%...