Technibel Cmhgv 2101 User manual

July 2006 10 11 369 - GB - 05

INSTALLATION INSTRUCTIONS

AIR COOLED WATER CHILLER

WITH BUILT-IN HYDRAULIC MODULE

AIR / WATER

R 407 C refrigerant

CMHGV 2101 / 2140

SUMMARY

1 - Generalities ................................................................................... 2

2 - Dimensions.................................................................................... 3

3 - Installation ..................................................................................... 3

4 - Connections................................................................................... 4

5 - Option and accessories................................................................. 5

6 - Starting .......................................................................................... 7

7 - Operation of "ECH" electronic control ........................................... 8

8 - Proportional condensation pressure control operation................ 14

9 - Maintenance ................................................................................ 14

10 - Pressure curves........................................................................... 17

MARKING

This product marked conforms to the essential requirements of the Directives:

- Low voltage no. 73/23 EEC, modified 93/68 EEC.

- Electromagnetic Compatibility no. 89/336 EEC, modified 92/31 and 93/68 EEC.

- Pressure Equipment Directive No. 97/23/CE.

APPLIANCES FILLED WITH R 407 C

R 407 C

• Fluid R 407 C, as opposed to R22, is not a pure fluid but a blend

composed of:

- 23% R 32 + 25% R 125 + 52% R 134 A.

• The compressors approved for operation with this fluid are filled

beforehand with polyalcohol oil.

Contrary to mineral oil, it is very hygroscopic: it absorbs the

humidity of the ambient air very quickly. This can modify its

lubricant properties and lead in time to the destruction of the

compressor.

MAINTENANCE INSTRUCTIONS

1- Never add oil to the appliance; the compressor is filled with

polyalcohol oil, a special oil which cannot tolerate the presence

of other oils.

2- The instruments used for:

- filling,

- pressure measurements,

- emptying under vacuum,

- recovering the fluid,

must be compatible and only used for the R 407 C fluid.

3- Theweight ofthe refrigerantcontainedinthe storage bottle must

be checked constantly. Do not use it from the moment the

remaining weight is less than 10% of the total weight.

4- In the case of a new charge:

- do not use the charging cylinder,

- use a balance and a dip pipe type R 407 C cylinder,

- chargetheweightofR407Casperthevalueindicatedonthe

unit’s identification plate,

- IMPORTANT: see instruction 3 above.

5- The charge must be undertaken in liquid phase.

6- In case of leakage, do not complete the charge: recover the

remaining refrigerant for recycling and perform a total charge.

Recovery, recycling or the destruction of the fluid must be done

in compliance with the laws in force in the country concerned.

7- If the refrigerant circuit is opened, you must:

- avoid the entry of air into the circuit as much as possible,

- replace the filter drier,

- perform the "vacuum operation" at a minimum level of 0.3

mbar (static).

1 - GENERALITIES

• Theequipment must beinstalled, started-up andmaintainedby authorisedandqualified personnel, inaccordance with local

rules and professional standards.

• The recommendations and instructions presented in the manual and on labels must be followed.

1.1 - GENERAL SUPPLY CONDITIONS

• The units must be securely anchored to the truck’s trailer during transport.

• Generally speaking, the material is transported at the consignee’s risk.

• Intheeventof damagesduringtransport,theconsigneemustnotifythecarrierbyregistered letterwithinthreedays following

delivery.

1.2 - VOLTAGE

• Before carrying out any operation, check that the voltage indicated on the unit corresponds to the mains voltage.

• Before servicing the unit, ensure that the electrical power supply has been shut off and warning signs installed.

1.3 - TECHNICAL AND PHYSICAL CHARACTERISTICS

• See technical data.

2,200

2,000

896

460

232

742

2 - DIMENSIONS

4 Ø 37 mm holes for

sling attachment

Dimensions (in mm) are given

for standard units without

options.

General tolerance ±10 mm.

Condenser air discharge

Condenser air suction

AWater inlet connection

BWater outlet connection

DPressure gauge (accessory)

Power supply

GCentre of gravity

3 - INSTALLATION

Clearances to be respected

1000

300

800

3000

• Prior to all servicing or other actions on the equipment, installation,

commissioning,operation,ormaintenance,thepersonnelinchargeofthese

operations shall become familiar with the instructions and

recommendations provided in the installation manual of the unit as well as

the elements of the project's technical file.

• The personnel responsible for receiving the unit must conduct a visual

inspection in order to identify all damage to which the unit may have been

subjected during transport: refrigerating circuit, electrical cabinet, cassis

and cabinet.

• The unit must not be installed near the following:

- sources of heat,

- combustible materials,

- return/air intake of an adjacent building.

• The unit must be installed, started, maintained and repaired by qualified

servicing personnel in compliance with the requirements of all directives,

laws and regulations and in accordance with standard trade practices.

• Duringinstallation,troubleshootingandmaintenanceoperations,theuseof

pipes as a step: under the stress, the pipe may rupture and the refrigerant

may cause serious burns.

• The unit is delivered on a wooden pallet and shrink-wrapped.

• A lift truck may be used to remove the unit from its pallet.

• Handle the unit with care.

• Crane installation: once the plastic film has been removed, the machine may be lifted by placing the hoisting hooks into the

four Ø 37 holes.

• Spacers or protective pads should be placed between the slings and body to avoid damage.

• The unit's centre of gravity and weight are indicated on the space requirement diagrams and in the table of the technical

documentation.

• Before installation, verify the following points:

- the unit must be installed outside in an appropriate location and in compliance with environmental requirements (sound

level, integration, etc...),

- the unit’s installation location must be perfectly level and strong enough to support the weight of the unit and must have

adequate inundation protection,

- sufficient space around the unit should be provided in order to facilitate servicing and maintenance operations (see

drawing page 3),

- air suction to the coil and fan discharge must not be obstructed,

- install the unit above the region’s average snowfall level,

- vibrations and noise must not be transmitted to adjacent buildings,

- install the machine on anti-vibration pads and fit hoses on piping elements, as required,

- if necessary, consult an acoustics specialist concerning the unit’s optimum location.

• AVOID:

- excessive exposure to sea-air or corrosive gases,

- the proximity of the extractor fan,

- projections of mud (next to a roadway or path, for example),

- areas where there is strong wind blowing against the unit's air exhaust.

• Protection index of the unit: - IP 44 : for the electrical equipment,

(IPXXB : for the mechanical hazards).

4 - CONNECTIONS

4.1 - HYDRAULIC CONNECTION

• Connect the water pipes to the corresponding connections: male 2" 1/2 (66 x 76).

• Connect the hydraulic filter (supplied with the unit) onto the water intake. Also provide 2 isolation valves for intake cleaning

purposes.

• The pipes must be at a sufficient distance from the removable panels to enable servicing operations to be performed.

• Make the connection with flexible hoses preferably.

•The diameter of the pipes must be calculated according to the installation (take care with high head losses).

4.2 - ELECTRICAL CONNECTION

4.2.1 - GENERALITIES

• In all cases, refer to the wiring diagrams supplied with the unit or supplied upon request.

• The acceptable voltage variation is: ±10% during operation.

• The electrical connection conduits must be fixed.

• Short circuit current: 10 kA as per IEC 947-2.

• Class 1 unit.

• Use the holes fitted with grommets for passing cables into the unit.

• To pass the cables inside the electric box, use stuffing box (not supplied) to be assembled on the plate at the back of the

electric box.

• The electrical installation must comply with the standards and regulations applicable where the unit is being installed (in

particular NFC 15-100 ≈CEI 364).

• The unit is designed to be connected to a mains supply with a TT, IT or TN.S neutral point connection (as per

NF C 15-100).

• Electrical diagram 10 05 814.

4.2.2 - MAINS SUPPLY

• Thepowersupplymust bethree-phase400V/50Hz, connectedtothepowersupplyswitchintheunit’selectricalbox(see

electrical diagrams).

Place cable glands (not supplied) for the passage in the bottom of the box.

• CAUTION:

Before starting the unit, ensure that the phase rotation order is correct. The phase-sequence controller restricts

the unit from operating if the 3 supply phases are not in order or if a phase is absent.

• The power supply must come from an isolation and electric protection device (not supplied) in accordance with existing

regulations.

• The sizing of the power supply cables is to be ensured by the installer in accordance with the installation conditions and

as per current standards.

Cable sizes, indicated below, are given for information purposes.

They are calculated in accordance with NFC 15-100 ( ≈CEI 364) with the following hypotheses:

- Maximum current, see table below.

- Multi-pole copper cable with PR insulation.

- Installation in non-ventilated cable duct (installation method No. 41). No other power cable.

- Ambient temperature 40°C.

• The complete electrical specifications are given in the table of the technical documentation.

4.2.3 - CONTROL BY EXTERNAL CONTACT

• Theunitcanbecontrolledremotelybyconnectingagood-quality,

potential-free external contact (not supplied) for the remove

ON/OFF signal (contact closed = operation authorized, contact

open = OFF).

• The ON/OFF signal is connected to terminals 17 and 18 of the

terminal strip located in the electrical box (remove the existing

jumper - see diagram).

• The wiring of this contact must not be routed near power cables

in order to avoid electromagnetic disturbances.

• Use shielded cable with twisted pair (shielding grounded on

generator side).

• Max. connection cable length: 100 m.

• Minimum wire size: 0.5 mm2.

4.2.4 - REMOTE CONTROL

• See § 5.

4.2.5 - MISCELLANEOUS

• Alarm transfer:

Potential-free contact (2A resistive - 250 VAC maximum) available on terminals 25 and 26 of the terminal strip in the

electrical box.

- Contact open = Alarm or power supply loss.

Note: this contact's direction of actuation may be changed through parameterisation. See § 7.

• The lengths indicated below correspond to a voltage drop less than 5% in the cable.

CMHGV

Starting current A

Max. total current A

Power supply cable section mm2

Max. connection length m

2101

220

113

200

2124

240

135

200

2140

290

143

200

CMHGV

ON/OFF

(❋)

(❋) Jumper to be removed

5 - OPTION AND ACCESSORIES

5.1 - OPTION (FACTORY INSTALLATION)

5.1.2 - BACKUP PUMP OPTION

• Code 70601105.

•

The switchover of the electrical supply onto the 2

pump is performed manually by a switch box placed near the

pumps

Procedure: This operation is to be performed by qualified personnel.

- Stop the generator and the pump (time delay).

- Close the valve of the pump to be shut down.

- Open the valve of the pump to be started.

- Select the pump to be started with the switch located in the box.

- Restart the generator.

- Check that the pump is operating.

5.2 - ACCESSORIES

5.2.1 - ANTI-VIBRATION KIT

• The kit includes:

-1 set of 6 anti-vibration plates, thickness 25 mm code 70600036,

5.2.2 - HP AND LP PRESSURE GAUGES

• Code 70970007.

• The accessory includes 1 set of 2 pressure gauges (HP and LP). Two per apparatus must be controlled.

- Remove the caps on the riser of the front panel.

- Install the pressure gauges.

- Connect the capillary tubes to the pressure taps.

CONN A CONN B

_S+

24 (S)

25 (+)

26 (-)

5.2.3 - REMOTE CONTROL

• Code 70250057.

• The functions and display are exactly the same as those on controller.

• The only difference concerns the buttons and which are

separated by the “ON/OFF” and “Mode” buttons.

•The controller is designed to be installed inside sheltered rooms.

• Connection:

- ontheelectroniccontrolboard locatedintheelectricbox (inparallel

with the box's display unit connection),

- use twisted pair shielded cable with a cross section of at least

0.5 mm2(shielding of the ground on unit side),

max. length: 100 meters.

CAUTION:

Do not route this cable near power cables.

The operation must take performed with the unit's power supply

off and locked out.

5.2.4 - RS 485 COMMUNICATION INTERFACE (MODBUS

protocol)

• Code 70250056.

• Secure the communication interface on the DIN rail next to the

electronic board located in the electric box.

• Connect the ribbon cable (supplied) between the interface and the

electronic control board located in the electric box.

• Connect the interface's 230 VAC power supply to terminals 1 and 2 on

the terminal strip using the Blue and Black wires supplied, as shown

opposite.

5.2.5 - 800 W ANTI-FREEZE RESISTANCE

• Code 70200010.

• Power supply and control of this resistance shall be separate from all

other installation circuits. It must be installed by qualified service

personnel who are familiar with this type of equipment and in

compliance with local regulations and recognized trade practices.

• Before all operations on the unit, make sure that the power supply

is disconnected and locked out.

• The 230 VAC electrical power supply must be fitted with a separate overcurrent protection and disconnect switch in

compliance with the rules and regulations in force.

• The power supply wiring must be secured. Use the cable gland located on the resistance cover.

- Note 1: The resistance is equipped with an adjustable limiting thermostat set at approximately 7°C.

- Note 2: Power to the resistance must be turned on only when the circuit is full of water.

- Note 3: Make sure that wiring is securely

clamped in the terminal block and the ground

connection is correctly attached.

Electronic control board

Remote control (rear

view)

GND

DTR

+5V

987654

RS 485

230 Vac

321

BUS ADAPTER

Blue

Black

Ribbon cable

Electronic control board

800W

230V

2 1

Thermostat

Cover

Thermostat

-35°C / +35°C

preset at 7°CPhase Neutral

Ground

6 - STARTING

6.1 - CHECK:

• That all hydraulic connections are properly tightened and that the hydraulic system functions correctly:

- purge the circuits,

- position of valves,

- hydraulic pressure.

• That there are no leaks.

• That the machine is stable.

• That the power cables are well fixed to their connection terminals (loose terminals can cause heat build-up on the terminal

board).

• That the electric cables are well insulated from any sections of sheet metal or metal parts which could damage them.

• That electrical wiring is a safe distance from refrigeration lines.

• That probe, control and power cables are properly separated.

• That the machine is earthed.

• That there are neither tools nor other foreign objects in the unit.

• IMPORTANT: If antifreeze is added (monopropylene glycol), a minium rate of 15% to 20% is needed to avoid any

risk of corrosion.

6.2 - STARTING-UP THE UNIT

• Power up the unit.

• Start the unit. The water circulating pump must function. See details in § 7.5.

6.3 - CHECKS TO BE MADE

• Checkthat therotation directionof thefan(s) andthe pumpiscorrect.

If not, reverse 2 phases on the electrical power supply.

• HP and LP pressure and amperages are in accordance with the

commissioning sheet.

• Check water flow.

• Check control system operation.

• Water circuit pressure.

NOTE: The equipment's buffer tank is equipped with a safety

pressure switch which prohibits the water circulating

pump from operating and thus the unit in case of insufficient pressure (cut-out 0.6 bar, interlocking

1.4 bar).

•Purge the hydraulic system, with special attention given to the circulating pump.

IMPORTANT:

• The unit's electronic control features a frost protection device that automatically starts the water circulating pump

depending on the outside temperature (threshold: 0°C), even if the unit is turned off.

• When the unit is turned on, It is thus important to make sure that the hydraulic circuit is ready to operate (purge, water

pressure, position of valves).

• The following must be undertaken in the event the unit is taken out of service or if there is a high risk of freezing:

- either drain the installation,

- or add glycol to the hydraulic circuit.

Draining

• See wiring diagrams supplied with the machine.

7.1 - DELIVERY STATE

• The control unit is supplied fitted in the

machine and factory pre-set.

• Alltheconnectionsaremadeexceptthose

concerning the available signals or the

options.

7.2 - PRINCIPLE

• The microprocessor controls the

operation of the machine and of the

associated alarms.

It continuously compares the water

temperature measured by the probe (Ai1)

and the setpoint temperature value

entered via the keyboard.

Each operating request generated by the

control system is signalled by indicator lights (6) or (8) - see below.

Each light flashes if a safety delay is in progress. The light shines steady when the corresponding circuit is in operation.

• The control probe is located on the water inlet in the factory.

7.3 - PRESENTATION

7.3.1 - DISPLAY KEYBOARD

(1) Key for:

- local On / Off control,

- access to parameters (in combination with button (2)),

- alarm clearance,

- hour counter reset.

(2) Key for:

- access to parameters (in combination with button (1)).

(3) LED display.

(4) Cooling mode indicator.

(5) Heating mode indicator (not used).

(6) Compressor on indicator, circuit A.

(7) Anti-freeze on indicator (not used).

(8) Compressor on indicator, circuit B.

(9) Decimal point: if illuminated when the operating time is displayed, the value must be multiplied by 100.

7.3.2 - CTN TYPE TEMPERATURE PROBE

• 10 kΩat 25°C

7 - OPERATION OF "ECH" ELECTRONIC CONTROL

ECH 420 SRD

MICROPROCESSOR

CARD

Temperature

probe Ai2

(water outlet for

anti-freeze

protection)

Temperature

probe Ai1

(water inlet for

control) DIGITAL INPUTS

ACTUATORS

12 VAC

SUPPLY

TRANSFORMER

Outside

temperature

probe Ai4

Temperature (°C)

-20

-10

Ohmic value (Ohm)

67,740

42,450

27,280

17,960

12,090

10,000

8,313

5,820

4,161

3,021

2,229

6 4 2

83 9 1

DISPLAY

KEYBOARD

7.3.3 - INPUT / OUTPUT BOARD

Water inlet probe - Ai1

Water outlet probe - Ai2

(not used) - Ai13

Outside temperature sensor - Ai4

GND

(not used) - AN1

12V

AN2 - (not used)

GND

ID11 - Thermic, ventilation, circuit B

Ai6 - (not used)

Ai5 - (not used)

12345678910

CONN A

CONN B

12V

12C

TC1

LP pressure switch, circuit A - ID5

HP pressure switch, circuit A - ID4

Water output - ID3

(not used) Heating / Cooling - ID2

On / Off - ID1

ID6 - Thermic, compressor, circuit A

ID7 - Thermic, ventilation, circuitA

ID8 - HP pressure switch, circuit B

ID9 - LP pressure switch, circuit B

ID10 - Thermic, compressor, circuit B

TC2

12C

Keyboard / display unit

terminal strip

Extension board connector

(not used)

TTL series port:

for connection:

- communication interface,

- parameterisation key.

Compressor, circuit A

Compressor, circuit B

Ventilation, circuit A

Ventilation, circuit B

Pump

Common

Alarm

Common, inputs

Triac control

output (not used)

Common, inputs

12 VAC

power supply

Triac control

output (not used)

Digital outputs

Alarm report digital output

7.4 - OPERATING MODE COOLING

• Staged triggering of cooling circuits depending on the

difference in relation to the water setpoint temperature.

• Note: An automatic refrigerating circuit switchover

system allows their operating time to be shared.

7.5 - STARTING

• Initial condition:

- Machine hydraulically and electrically connected ready to operate.

- If connected, the remote On/Off contact is open (Off ).

•Turn the installation on:

- The display unit is off (except for the "decimal" point which remains illuminated); this

meansthat the controlleris off. Turnit off bypressing andholdingthe "ON/OFF" button

for 2 seconds.

- The cooling indicator light (4)illuminates and the display unit then indicates the

message "E00" which identifies shutdown by the remote On/Off contact (if used).

• To start the unit:

- Close the remote On/Off contact. The water inlet temperature is displayed. The circulating pump starts.

- Theoperatinglightsofthecompressors(6)and(8)illuminateifrequired(seediagram,paragraph7.4). Ifthelightflashes,

it means that the compressor is starting required but that a safety delay is in progress. This light stays on when the

compressor has started.

C03

C05

C03

1st circuit

Water temperature

Difference between

stages

Cooling setpoint

Hystereris Hystereris

2nd circuit

2 seconds

• To stop the unit:

- Open the remote Off (stop) contact.

- The indicator lights of compressors (6) and (8) go off and the message "E00" is displayed.

- The water circulating pump stops after 1 minute.

Note: the unit can be shut off locally by pressing and holding the "ON/OFF" button for 2

seconds. Locally-controlled shut-off has priority over the remote control command. The

display unit is off at this time (except for the "decimal" point which remains illuminated).

7.6 - PARAMETERS - DISPLAYING AND ADJUSTING

7.6.1 - GENERALITIES

• Parameter access is structured within a multi-level menu, see the diagram below. Simultaneously pressing the

"ON/OFF" (1) and "Mode" (2) buttons for a brief moment (less than 2 seconds) gives access to the next level.

Simultaneously pressing for a long moment (longer than 2 seconds) turns you to the previous level.

• Button (1) or button (2) is used to scroll through the entries ("Label") within the same level or to increase or decrease a

parameter value.

7.6.2 - PARAMETERS ACCES DIAGRAM

(*) Accessible to qualified personnel only after entering the password (PSS).

Note 1: Indicator lamps (6) and (8) flash when levels 1 and above are accessed.

Note 2: The normal display (level 0) returns automatically after 5 minutes if no buttons are pressed.

Level 0

Normal display Level 1 Level 2 Level 3 Level 4

Temperature S1

Alarm active Set value SET Cooling setpoint

Coo Setpoint value

Temperature

probes TP Probe code t01…t04 Temperature value

Alarms Err Alarm code E00...

Digital inputs Id (*) Input code 01… input status

Parameters PAr (*) Config. para. CnF Parameters codes

H01… Parameter value

Compressor

parameter CP Parameters codes

C01… Parameter value

Fan parameter FAn Parameters codes

F01… Parameter value

Alarm parameter

ALL Parameters codes

A01… Parameter value

Pump para. PUP Parameters codes

P01… Parameter value

Frost. para. Fro

Password PSS

Hour counters OHr Counter value

Counter value

Pump counter OHP Counter value

Compressor counter

circuit A OH1

Compressor counter

circuit B OH3

Not used

Password value

t < 2 sec. --> Upper level t > 2 sec. --> Return to the previous

level

7.6.3 - SET POINT ADJUSTMENT

• Simultaneously press buttons (1) and (2) for at least 2 seconds, "SET" is displayed.

• Press the 2 buttons again, "Coo" is displayed.

• Simultaneouslypress the2 buttonsagain for2seconds. Thesetpoint valueappears. Ifneeded,modifythevalue withthe

buttons.

• Press the 2 buttons simultaneously to validate the setpoint.

• Return to the normal display by simultaneously pressing the 2 buttons for more than 2 seconds.

Reminder: control on the installation return temperature.

Note:

All units are factory configured and parameterized for optimum operation in the terminal unit application.

7.6.4 - DISPLAY OF TEMPERATURES, ALARMS, AND HOUR COUNTERS

Accessible directly via the menu, see diagram 7.6.2.

• Temperatures "TP":

Displays the values indicated by each temperature probe.

• Alarms "Err":

Displays the list of all current alarms (scroll through the alarm messages with buttons (1) and/or (2)).

• Hour counters "OHr":

Displays the operating time of the compressors on circuit A("OH1"), and the compressors on circuit B("OH3") and the

circulating pump ("OHP"). The counter can be reset by a long press (> 2 seconds) on button (1) when the counter value

is displayed.

7.6.5 - ACCESS TO THE TECHNICAL PARAMETERS "PAr"

For qualified personnel after entering the password "PSS". Any incorrect adjustment may lead to serious

malfunctions.

• Go to the "PSS" section in the menu. Briefly and simultaneously press buttons (1) and (2). The "---" message appears.

Display the password ("199") using buttons (1) and (2) and validate it by simultaneously pressing buttons (1) and (2). It

is now possible to enter the parameters section "PAr".

CAUTION:

After modifying one or more technical parameters, the controller must be turned off then back on again to reset

it with its new parameters.

7.7 - ALARMS

• When an alarm occurs:

- the alarm report is activated,

- the corresponding code flashes on the display unit. See table,

- the unit stops if necessary (see table below).

• Remedy the fault.

IMPORTANT NOTE:

All work must be carried out by qualified, experienced personnel.

•CAUTION: the alarms:- HP,

- LP (low pressure),

- Anti-freeze,

- Water flow rate,

normally with automatic reset, have an event counter that shifts the alarm to manual reset if the alarm occurs several times

during the last hour.

• The alarms are reset by briefly pressing the "ON/OFF" button (1).

• When the alarm is cleared:

- the alarm report is de-activated,

- the display reverts to normal (not flashing),

- the machine can re-start (if it was stopped).

•Note: Alarms are active in off mode.

•Special features of the alarm report:

- Potential-free contact (2A resistive - 250 VAC) available on the terminal strip of the electric box.

Contact open in case of alarm or loss of power supply.

- This report's operating logic can be changed by changing parameter H45 from 1to 0.

- The alarm report can be activated in case of shutdown by remote contact by changing parameter H72 from 1to 0.

Factory setting

(terminal units)

Coo Cooling set point 12°C 12 to 25°C

ParametersCode Adjustment range

SUMMARY TABLE OF ALARMS

A= Auto

M= Manual

7.8 - SPECIAL OPERATING FEATURES

•Water circulating pump control:

- the pump is actuated when the unit operating,

- thepumpisstoppedwhentheunitisstopped.Theshut-downofthepumpisdelayed1minuteafterthecompressorstops,

- the unit's electronic control features a frost protection device that automatically starts the water circulating pump

depending on the outside temperature (threshold: 0°C), even if the unit is turned off.

In the event of a faulty outside temperature sensor, circulating pump operation is forced, for safety reasons.

The"Water output" alarm(E41)stopsthecirculatingpumpwhenthisalarmshiftstomanual reset.Inthe eventofa fault,

the alarm report is actuated.

Alarm Code Inhibition delay Reset Remarks

ABAB

Water inlet

temperature

probe fault, Ai1 E40 XXXX A

Water inlet

temperature

probe fault, Ai2 E06 XXXX A

Outside

temperature

sensor fault, Ai4 E42 XXXX A

Force water pump

operation

H.P. circuit A E01 X X A/M

H.P. circuit B E21 X X A/M

L.P. circuit A E02 120'' at start-up X X A/M

L.P. circuit B E22 120'' at start-up X X A/M

Thermic,

compressor,

circuit A E03 X X M

Thermic,

compressor,

circuit B E23 X X M

Thermic, fan,

circuit A E04 X X M

Thermic, fan,

circuit B E24 X X M

From probe Ai2

A/M (water outlet)

Threshold = 6°C

Configuration

error E45 XXXX X Consult the After-Sales

Service Department

Shutdown by

remote contact E00 XXXX X A

No alarm report with

H72 = 1

Threshold = 35 °C

Water inlet

temperature too

high E46 2 '

XA/M

30'' at start-up

If manual reset

Water flow rate E41 10'' in operation

E05 X X

Compressor

stop Fan stop Water

pump

shutdown

See also reset of the

corresponding circuit

breaker

Anti-freeze

(water heat

exchanger)

•Pre-ventilation:

- incaseofanoperatingrequestandinordertopreparetheairexchanger,thefansareactuatedapproximately20seconds

before the first compressor starts up.

•Anti short-cycle time delays:

- the control of each cooling circuit features a time delay system in order to respect:

• a maximum number of starts per hour (12),

• a minimum stop time (150 seconds).

•Starting the compressors:

- in order to reduce start-up currents:

• the triggering of the 2nd cooling circuit is time delayed (10 seconds),

• the triggering of the 2nd compressor of a cooling circuit is delayed (time delay unit on the compressor switch set at

approximately 5 seconds).

•Control hysteresis:

- see the operating diagrams in § 7.4,

- thehysteresis ofeach stagein coolingmode isfactorysetat1.5 k.Modification ispossible. Todo this,change parameter

C03 (cooling hysteresis) in the compressor section "CP",

- the difference between the 2 stages is factory set at 1.5 k. Modification is possible. To do this, modify parameter C05 in

the compressor section "CP".

•"Dynamic" set point:

- bychanging H50 from0 to1, anautomatic setpoint compensationsystem is activatedbased ontheoutside temperature,

- the following parameters allow the compensation slopes to be set:

•Principle:

•Example: Factory setting in cooling mode

•Adjustment of the value measured by the temperature probes ("Offset"):

allows the difference between the value displayed and the verified value to be compensated.

< 0 > 0

Set point offset

H51 > 0

Outside temperature

H55 H55

H53

Set point

Outside temperature

H55

H51

Parameter Designation Factory setting

H51 = Set point "offset" in cooling mode 5 k

H53 = Outside temperature setting ("foot of slope") in cooling mode 25°C

H55 = Proportional strip in cooling mode + 10 k

Parameter Probe offset Units Factory setting

H57 Probe Ai1 offset Degree 0

H58 Probe Ai2 offset Degree 0

H60 Probe Ai4 offset Degree 0

9 - MAINTENANCE

IMPORTANT :

Before carrying out any work on the machine, make sure that it is switched off and that access to it is prevented.

Any work must be carried out by personnel qualified and authorised to work on this type of machine.

9.2 - REFRIGERANT CIRCUIT RECOMMENDATIONS

• A new filter dryer must be installed after all servicing operations performed on the refrigerant circuit.

9.2.1 - MAINTENANCE

• Prior to all servicing or other actions on the equipment, installation, commissioning, operation, or maintenance, the

personnelinchargeofthese operationsshallbecomefamiliarwith theinstructions andrecommendationsprovided inthe

installation manual of the unit as well as the elements of the project's technical file.

• The unit must be installed, started, maintained and repaired by qualified servicing personnel in compliance with the

requirements of all directives, laws and regulations and in accordance with standard trade practices.

• During installation, troubleshooting and maintenance operations, the use of pipes as a step: under the stress, the pipe

may rupture and the refrigerant may cause serious burns.

• During unit maintenance operations, the composition and the condition of the coolant will be checked, as well as the

absence of all trace of refrigerant.

• During the unit's annual seal test, in accordance with the law, check that the high and low-pressure pressure controllers

are correctly connected on the refrigerating circuit and that they disconnect the electrical circuit in case of tripping.

• During maintenance operations, make sure that there is no trace of corrosion or oil stains around the refrigerating

components.

• Priortoallmaintenanceandservicing ontherefrigeratingcircuit,onemustfirstshutdowntheunitthenwaitafewminutes

before installing temperature or pressure sensors. Certain equipment, such as the compressor and piping, may reach

temperatures above 100°C and high pressures may lead to serious burns.

9.1 - PERIODIC CHECKS

• Carryoutthefollowingoperationsatleastonceayear(thefrequencydependsontheinstallationandoperatingconditions):

- Cleaning the air exchanger.

- Checking the wear parts.

- Checking the operating set points and temperatures.

- Check the refrigerant circuit in accordance with the

regulations in force.

- Checking the safety devices.

- De-dusting the electrical equipment cabinet.

- Checking that the electrical connections are secure.

- Checking the earth connection.

- Check for leaks.

- Check the operation and parameters as per the start-up

data sheet.

- Check the hydraulic circuit in accordance with standard

trade practices (output, pressure, purge the circuit and

particularlythepump–seeparagraph6.3,filtercleaning).

- Check that the safety valve operates correctly.

GENERAL MAINTENANCE:

All equipment must be properly maintained in order to provide optimum performance over time. Faulty maintenance can result in

thecancellation oftheproduct guaranty.Depending ontheproducts, maintenanceoperations consistinthe cleaningof filters (air,

water), internal and external exchangers, casings, and the cleaning and protection of condensate tanks. Treating odours and the

disinfection of room surfaces and volumes also contributes to the cleanliness of the air breathed by users.

TECHNIBELproposesawiderangeofperfectlyadaptedprofessionalcleaning,maintenanceandrepairproductsforcompleteand

efficient maintenance. For an optimum result, TECHNIBEL air-conditioners must be maintained with TECHNIBEL maintenance

products.

8 - PROPORTIONAL CONDENSATION PRESSURE CONTROL OPERATION

• The unit is equipped with a separate condensation

pressure control device.

• 1 voltage selector per refrigeration circuit for the power

supply of the electric fans.

• Based on the information gathered by the specific

pressure sensors, the control varies the supply voltage of

theelectric fansin accordancewith thediagram opposite.

• Factory-set for optimal operation. For all other settings,

consult us.

• The variable regulators are mounted inside the electric

box.

Max. voltage

Min. voltage

Condensation pressure (Bar)

9.2.2 - TROUBLESHOOTING

• Allmaintenanceandservicingoperationsontherefrigeratingcircuitmustbeconductedinaccordancewithstandardtrade

practices and safety rules: recovery of the refrigerant, inert shielded (nitrogen) brazing, etc…

• All brazing operations must be conducted by qualified welders.

• For equipment charged with R 407 C, refer to the specific instructions in the installation manual.

• Thisunitis equipped with pressurized equipment, forexample piping. Use only genuine partslistedin the spare parts list

for replacing defective refrigeration components.

• Pipes may only be replaced by copper tubing in compliance with standard NF EN 12735-1.

• Leak detection, in the case of pressure testing:

- Never use oxygen or dry air, as the risk of fire or explosion is present

- Use dehydrated nitrogen or a nitrogen and refrigerant mix indicated on the manufacturer's plate

- The test pressure, low and high pressure, must not exceed 20 bar and 15 bar in the case where the unit is equipped

with the pressure gauge option.

• For high pressure circuit pipes made with copper tubing having a Ø = or > 1"5/8, the supplier will be requested to submit

a certificate § 2.1 in accordance with standard NF EN 10204, which will be filed in the installation's technical file.

• All part replacement with other than genuine parts, all modifications of the refrigerating circuit, all replacement of

refrigerant by a fluid other than that indicated on the manufacturer's plate, all use of the unit outside the application limits

defined in the documentation, shall result in the cancellation of PED CE marking compliance which shall fall under the

liability of the individual who carried out these modifications.

START-UP DATA SHEET

CMHGV Range

CMHGV 2101 to 2140

Code:

Serial Number:

Started by: Company: Site: Date:

Voltage measured on unit V L1-L2 L2-L3 L3-L1

FANS

Measured amperage circuit A - Fan 1

A/phase

L1 L2 L3