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English

Page 29

General Description

sight glass with humidity indicator, a differential oil

pressure switch. Furthermore, each circuit is

equipped with safety devices in accordance with

PED 97/23/EC: high and low pressure switches,

safety valves providing protection in case of fire or

malfunction of compressors.

7.5 Water heat exchanger

All units, except for SLS 3002 and SLS 3402 - 3802

- 4202, are equipped with refrigerant/water heat

exchangers with brazed plates, of “Dual Circuit”

type. This type of heat exchangers makes it possible

to obtain a high heat exchange efficiency, in spite of

its small overall dimensions.

The SLS 3002 and SLS 3402 - 3802 - 4202 units are

provided with a direct-expansion refrigerant/water

shell and tube heat exchanger with several refrigera-

tion circuits. The tube bundle can be removed for in-

spection or maintenance. The evaporators are insu-

lated with UV ray-proof 19 mm-thick anti-condensate

closed-cell polyethylene material.

The external surface is provided with wire resistors

(130 Watt), which prevent frosting at low tempera-

tures (down to -18°C) when the unit is off.

7.6 Air heat exchanger

Coils are made of copper pipes in staggered rows,

mechanically expanded inside an aluminium finned

pack.

7.7 Fans

The condenser’s fans are of large diameter (800

mm) axial type. They are provided with external dif-

fusers (nozzles), that reduce the aeraulic motor to a

large extent. Each fan is provided with galvanised

steel accident-prevention guard, painted after assem-

bly. Finally, the fans’ motors are completely closed,

protection class IP54, protection thermostat im-

mersed in windings.

SLS - Refrigerant circuit of units with plate exchanger evaporator

6 Coil
7 Liquid cock
8 Filter
9 Sight glass
10 Thermostatic valve
11 Solenoid valve

Components:

1 Screw compressor
2 Screw compressor’s

delivery cock

3 Flexible hose - absorber
4 Silencer
5 Safety valve

Note:

the units are equipped with two refrigeration

circuits. Only one circuit is illustrated for the
sake of simplicity.

Safety devices:

A HP pressure switch
C Transducer
D Differential water pressure switch

Filling/discharge and pressure

intakes Freon

Suction points for vacuum

12 Plate-type heat exchanger
13 Nonreturn valve
14 Capillary
15 Thermostat
16 Desuperheater (optional)

Manuale SLS-SLH1 2.8.2005 12:34 Pagina 29

Содержание SLH 1202

Страница 1: ...glish Air cooled chillers and heat pumps with screw compressors Installation and maintenance manual IOM SLS407 N 1GB Date November 2005 Supersedes None SLS 1202 4004 SLH 1202 3804 262 916 kW 287 853 k...

Страница 2: ...Start up 21 5 3 Checking the operation 22 5 4 Delivery to the customer 22 6 OPERATION 6 1 General Informations 23 6 2 Keyboard Display Terminal Unit 23 6 3 Functions Keys Configurations 25 7 GENERAL D...

Страница 3: ...rranty to be valid the following conditions shall be met h The machine must be operated only by skilled per sonnel from Itelco Clima s Authorised After Sales Service h Maintenance must be performed on...

Страница 4: ...high surface temperature The guards of the fans only for units pro vided with air heat exchangers must be al ways mounted and must never be removed before de energising the appliance It is the User s...

Страница 5: ...r to balance the pressure to the atmospheric value be fore disconnecting them disassemble connections filters joints or other line items h do not use your hands to check for any pressure drops h use t...

Страница 6: ...ernal disconnecting switch h place a warning sign do not turn on mainte nance in progress on the external disconnecting switch h make sure that on off remote controls are inhibited h wear suitable per...

Страница 7: ...t Identification of the refrigerant External door Identification of the unit Outside on the right hand front column Electrical warning Adjacent to the master switch Gravity centre Base TENERE SU QUEST...

Страница 8: ...tion Adjacent to fittings ATTENZIONE INSERIRE LE RESISTENZE DI RISCALDAMENTO OLIO ALMENO 12 ORE PRIMA DI OGNI AVVIAMENTO SE PREVISTE PRIMA DELLA MESSA IN TENSIONE ASSICURARSI CHE LE VITI DEI CIRCUITI...

Страница 9: ...t Very high concentrations may result in the risk of asphyxia due to the reduction in the oxygen percentage in the atmosphere Remove the patient to fresh air and keep warm and at rest If necessary giv...

Страница 10: ...le leaks ventilate the room Reduce the leak with sand earth or other absorbing substances Make sure that the liquid does is not channelled into gutters sewers or pits where the vapours are likely to c...

Страница 11: ...ess heat May corrode some types of paint or rubber Use in well ventilated rooms Always wear protective goggles or a mask Wearing protective gloves is not mandatory but is recommended in case of prolon...

Страница 12: ...ts listed in the order In case of damage note it down on the carrier s de livery note and issue a claim according to the instruc tions provided in the delivery note In the presence of any serious dama...

Страница 13: ...ance and any damage to the surfaces until the unit is ready for operation The lifting eyebolts protrude from the base of the unit it is therefore recommended to remove them once the unit has been lift...

Страница 14: ...s for example the outlets to kitchen exhaust hoods into the atmosphere Otherwise the grease is likely to deposit on the fins of the refrigerant air exchangers and would fix every type of atmos pheric...

Страница 15: ...t the jack mounted on the antivibration mount in the hole in the machine base 3 make sure that the bracket is secured and clamped to the base of the machine and that it is resting on the flat washer E...

Страница 16: ...ge tank shall be installed h A membrane expansion vessel provided with safe ty valve with vent that must be visible The capacity of the expansion vessel must allow for an expansion of at least 2 of th...

Страница 17: ...ed to fill the circuit must be treated to obtain the request ed PH Legends I Pressure gauge connection S Gate valve Fl Flow Switch GA Flexible hoses R Drain cock T Thermometer F Filter 4 4 Hydraulic c...

Страница 18: ...C the Electromagnetic Interference Directive 89 336 EC and the usual procedures and standards applicable in the place of installation The unit must not be operated if its installation has not been car...

Страница 19: ...ON SRHP DOUBLE SET POINT DAY NIGHT SDN PHASE VOLTAGE CONTROL ACCESSORY SQZ FLOW SWITCH SF EXTERNAL INTERLOK OPTIONAL CIRC PUMP ETC COMMON LOAD SHEDDING REMOTE CONTROL C 1 1 SLS OFF LOAD SHEDDING REMOT...

Страница 20: ...entering and leaving the plant they are supplied separate and must be mounted during the installation of the unit as explained in the instructions below 1 2 Gas well Manual exhaust valve 3 manifold f...

Страница 21: ...by the customer The supplied temperature control sensor for the wa ter returning from the plant is not installed on the unit The sensor through the relevant well must be posi tioned on the manifold w...

Страница 22: ...tion is correct with out any trace of leaks and air bubbles If you use ethylene glycol as antifreeze check that its per centage is correct h Check that the direction of rotation of the pumps is correc...

Страница 23: ...atures during operation at high and low pressure detected by the pressure gauges of the refrigerant are within the following range On the units not provided with HP LP pressure gauges for the refrige...

Страница 24: ...arel or Modbus type Remote Display Terminal Remote control Phase monitoring kit Black Box h Chiller Control system for SLS H two screw compressors units These cooling only water chillers are provided...

Страница 25: ...o arrest the buzzer If the key is lighted in red it means that at least one alarm was detected Pushing one time this key the buzzer is arrested and the mask related the active alarm is dis played Push...

Страница 26: ...ressure On Off On Off On AL18 Clock board failure On On On On On AL21 B1 Tin sensor failure Off Off Off Off On AL22 B2 LP1 sensor failure Off On Off On On AL23 B3 DP1 sensor failure Off On On On On AL...

Страница 27: ...ntenance Pushing the Maintenance key it is possible to ac cess to the following information masks 1 ALARM HISTORY Pushing the Enter the cursor enter in the list of the memorized alarms At this point t...

Страница 28: ...48 43 Outlet 20 50 45 Glycol setpoint Inlet 15 20 10 Outlet 15 20 8 Band Inlet 1 10 5 Dead band Outlet 1 6 2 Language Selection ITA ENG GER FRA SPA ITA Recovery System 2 ON OFF OFF ON OFF System 1 ON...

Страница 29: ...High Efficiency Temperature version HET Chillers heat pumps with air condensation work ing with R407C with R22 on demand for extra Eu ropean countries SLS D SLH D The capacity control of the step typ...

Страница 30: ...tempera tures down to 18 C when the unit is off 7 6 Air heat exchanger Coils are made of copper pipes in staggered rows mechanically expanded inside an aluminium finned pack 7 7 Fans The condenser s...

Страница 31: ...circuit of units with plate exchanger evaporator and oil cooler Note the units are equipped with two refrigeration circuits Only one circuit is illustrated for the sake of simplicity 7 Liquid cock 8 F...

Страница 32: ...Solenoid valve 12 Shell Tube type heat exchanger 13 Nonreturn valve 14 Solenoid valve Components 1 Screw compressor 2 Screw compressor s delivery cock 3 Flexible hose absorber 4 Silencer 5 Safety valv...

Страница 33: ...relay and elec tronic card a thermostat for the compressor s de livery temperature h The keyboard and the display of the Chiller Con trol microcomputer mounted on the door of the control section 19 N...

Страница 34: ...ately to be mounted on site by the installer Water flow meter Prevents the operation of the unit if the circulating chilled fluid is insufficient It is recommended to in stall a flow meter to ensure t...

Страница 35: ...SLS 1202 SLS 1402 SLS 1602 SLS 1802 SLS 1902 SLS 2002 SLS 2202 SLS 2402 K 19 3 19 3 13 2 9 8 9 8 9 8 7 2 7 2 Min water flow rate l s 7 8 8 9 10 1 11 3 12 7 13 7 15 2 15 9 Nominal water flow rate l s...

Страница 36: ...pressure drops kPa 114 1 104 6 89 2 78 0 93 3 Heat exchanger SLH SLH 1202 SLH 1402 SLH 1602 SLH 1802 SLH 1902 K 575 8 570 3 561 6 263 0 263 0 Min water flow rate l s 1 1 1 2 1 4 1 5 1 6 Nominal water...

Страница 37: ...ding Y q Evaporator Type Plate type Number 1 1 1 1 1 1 1 1 Minimum water content l 26 26 33 40 40 40 50 50 Condenser Type Coil type Al Cu Hydraulic connections Type Gas threaded male type Inlet diamet...

Страница 38: ...orator Type Plate type Shell Tube Plate type Number 1 1 1 1 1 2 2 Minimum water content l 50 207 207 222 222 40 40 Condenser Tipo Coil type Al Cu Hydraulic connections Type Gas thre male To be welded...

Страница 39: ...Evaporator Type Plate type Number 1 1 1 1 1 1 1 1 Minimum water content l 26 26 33 40 40 40 50 50 Condenser Tipo Coil type Al Cu Hydraulic connections Type Gas threaded male type Inlet diameter inch 3...

Страница 40: ...orator Type Plate type Shell Tube Plate type Number 1 1 1 1 1 2 2 Minimum water content l 50 207 207 222 222 40 40 Condenser Type Coil type Al Cu Hydraulic connections Type Gas thre male To be welded...

Страница 41: ...q Evaporator Type Plate type Number 1 1 1 1 1 1 1 Minimum water content l 26 26 33 40 40 40 50 Condenser Type Coil type Al Cu Hydraulic connections Type Gas threaded male type Inlet diameter inch 3 3...

Страница 42: ...4 4 4 4 Start up type Y q Part Winding Evaporator Type Plate type Number 1 1 2 2 2 2 Minimum water content l 50 50 26 26 33 33 40 40 40 40 Condenser Type Coil type Al Cu Hydraulic connections Type Gas...

Страница 43: ...Y q Evaporator Type Plate type Number 1 1 1 1 1 1 1 Minimum water content l 26 26 33 40 40 40 50 Condenser Type Coil type Al Cu Hydraulic connections Type Gas threaded male type Inlet diameter inch 3...

Страница 44: ...4 4 4 4 Start up type Y q Part Winding Evaporator Type Plate type Number 1 1 2 2 2 2 Minimum water content l 50 50 26 26 33 33 40 40 40 40 Condenser Type Coil type Al Cu Hydraulic connections Type Ga...

Страница 45: ...ure in the room the type of insulation and the cable laying the maximum length of the power supply line SLS ELN 1202 1402 1602 1802 1902 2002 2202 2402 Nominal voltage V ph Hz 400 10 3 50 Nominal powe...

Страница 46: ...oning of the unit s power cables is the responsibility of the installer who shall consider the rating the maximum working temperature in the room the type of insulation and the cable laying the maximu...

Страница 47: ...25 1 25 1 25 1 25 1 25 Max absorbed current per fan A 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 Standard fans SLS ELN 2602 3002 3402 3802 4202 3804 4004 Power supply V ph Hz 400 10 3 50 Number n 10 12 12 14 16...

Страница 48: ...400 400 500 400 Wire cross area 1 mm2 2x150 2x185 2x240 2x240 2x120 2x120 2x150 2x120 1 The dimensioning of the unit s power cables is the responsibility of the installer who shall consider the ratin...

Страница 49: ...16 2x129 2x140 2x150 2x169 Max current FLA A 2x96 2x124 2x140 2x162 2x168 2x180 2x196 Max start up current LRA A 2x373 2x280 2x351 2x423 2x495 2x520 2x276 Oil treater power input W 200 200 200 200 200...

Страница 50: ...power per fan kW 1 25 1 25 1 25 1 25 1 25 1 25 1 25 Max absorbed current per fan A 2 3 2 3 2 3 2 3 2 3 2 3 2 3 Standard fans SLH ELN 2402 2602 2804 3204 3604 3804 Power supply V ph Hz 400 10 3 50 Num...

Страница 51: ...LN HET Electrical Board COMPRESSORS SIDE ELECTRICAL BOARD P1 P3 P5 P2 P4 P6 c e b b e c a Electrical Board COMPRESSORS SIDE ELECTRICAL BOARD P1 P3 P5 P7 P2 P4 P6 P8 c b e d a P1 P10 Unit position SLS...

Страница 52: ...02 802 802 9520 9620 2250 1583 1208 1233 615 854 4146 SLS Al Cu Distribution Weights kg Shipping Weight kg Operat Weight kg Position P1 P12 Barycentre Position F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 k...

Страница 53: ...753 753 753 8955 9035 2250 1583 1208 615 889 4200 SLH Al Cu Distribution Weights kg Shipping Weight kg Operat Weight kg Position P1 P8 Barycentre Position F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 kg kg...

Страница 54: ...3 Technical data 8 5 Overall dimensions SLS SLH 1202 BLN LN 2200 2550 130 4030 600 245 628 SLS SLH 1402 1602 BLN LN SLS SLH 1202 1402 ELN HET 130 2550 2200 4030 628 245 600 Manuale SLS SLH2 2 8 2005 1...

Страница 55: ...ata SLS SLH 1602 1802 ELN HET SLS SLH 1802 1902 2002 BLN LN 2200 130 2550 4030 600 628 245 SLS SLH 1902 2202 ELN HET SLS SLH 2202 2402 2602 BLN LN 2200 130 2550 6030 600 628 245 Manuale SLS SLH2 2 8 2...

Страница 56: ...English Page 55 Technical data SLS SLH 2002 2402 2602 ELN HET 130 2200 2550 6030 600 628 245 SLS 3002 BLN LN 2200 170 2550 6030 2200 1800 461 Manuale SLS SLH2 2 8 2005 12 23 Pagina 55...

Страница 57: ...Page 56 Technical data SLS 3002 3402 ELN HET SLS 3402 BLN LN 2200 170 2550 6030 2200 1800 460 SLS 3802 BLN LN 2200 170 2550 460 1800 2200 8040 Manuale SLS SLH2 2 8 2005 12 23 Pagina 56...

Страница 58: ...English Page 57 Technical data SLS 3802 ELN HET SLS 4202 BLN LN 2200 170 2550 460 1800 2200 8040 SLS 4202 ELN HET 2200 170 2550 460 1800 2200 8040 Manuale SLS SLH2 2 8 2005 12 23 Pagina 57...

Страница 59: ...4 BLN LN ELN HET SLH 3204 BLN LN SLH 3204 ELN HET SLH 3604 3804 BLN LN ELN HET 2200 130 2550 245 628 600 4023 8405 8040 2200 130 2550 245 628 600 4023 8405 8040 Auxiliary Electrical Board Manuale SLS...

Страница 60: ...English Page 59 Technical data SLS 3804 4004 BLN LN ELN HET 2200 130 2550 245 628 600 4023 8070 Auxiliary Electrical Board Main Electrical Board Manuale SLS SLH2 2 8 2005 12 23 Pagina 59...

Страница 61: ...2 2 2 2 1 5 1 5 1 5 1 5 1 0 2 1 5 1 5 2 Arrangement 2 m 2 2 2 2 2 2 1 5 2 1 5 1 0 2 2 2 2 2 A wall only may be higher that the units The area between the walls must be kept free from any obstacle whic...

Страница 62: ...incurred to repair the ap pliance in its original state The provisions of this section apply only to standard units according to the order requirements other documentation may be added concerning any...

Страница 63: ...rs h Check the acidity of the oil every year h After 8000 hours of work carry out a visual in spection on the suction discharge valves for wear If necessary replace these components If com pressors ar...

Страница 64: ...th er day 9 9 Thermostatic expansion valve The circuit of the unit is equipped with a thermostatic expansion valve with external equalizer The valve is shop calibrated for an overheating of 5 C Proced...

Страница 65: ...se overheating Check the charge Excessive noise Vibration of lines Check the clamping brackets if any Whistler emitted by the thermostatic expansion valve Refill Check the dehydrating filter Noisy com...

Страница 66: ...distribution network inform the Energy Distributor Short circuit of the compressor s motor Check the continuity of the winding Seized compressor Replace the compressor Identify and remove the leak In...

Страница 67: ...Set of compressor contactors 1 Fan s contactor 1 Water sensor 1 Air sensor 1 HP pressure transductor 1 LP pressure transductor 1 Electronic card 1 Keyboard 1 Compressor oil resistor 1 11 2 Oil for com...

Страница 68: ...ion valves are installed on the cooler it might be necessary to drain the com plete hydronic system If no shutoff valves have been provided it may be necessary to drain the whole plant If a glycoled s...

Страница 69: ...oduct improvement programme our products are subject to change without prior notice Non contractual photos Wesper S A S 42 cours Jean Jaur s 17800 PONS FRANCE 33 5 46 92 33 33 33 5 46 91 38 33 www wes...

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