SH - rigelimpianti.it · These evaporators work in perfect countercurrent, and allow to have very high evaporation temperature compared other kind of evaporator, for maximize EER

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SH

Available versions . . . . . . . . . . . . . . . . . . . pag . 4

Structure of electro-galvanized and painted steel sheet . . . . . . . . . . . . . . . . . . pag . 5

Ecological refrigerant R410A . . . . . . . . . . pag . 5

Scroll compressors . . . . . . . . . . . . . . . . . . pag . 6

Finned coil exchangers . . . . . . . . . . . . . . pag . 6

Brazed plates evaporators . . . . . . . . . . . . pag . 7

Axial fans . . . . . . . . . . . . . . . . . . . . . . . . . . pag . 7

Thermostatic expansion valves . . . . . . . . pag . 8

Electronic expansion valves . . . . . . . . . . . pag . 8

4-way reversing valve . . . . . . . . . . . . . . . . pag . 9

Electronic regulation . . . . . . . . . . . . . . . . . pag . 9

Hydronic circuit . . . . . . . . . . . . . . . . . . . . pag . 10

Operating range . . . . . . . . . . . . . . . . . . . . pag . 10

Versions and accessories . . . . . . . . . . . . .pag . 11

Technical sheets . . . . . . . . . . . . . . . . . . . pag . 12

Performances . . . . . . . . . . . . . . . . . . . . . pag . 13

Dimensional drawings . . . . . . . . . . . . . . . pag . 15

INDEX

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High performances water heat pumps, axial fans, hermetic scroll compressors, brazed plate evaporators, refrigerant gas R410A .Outdoor air down to -17°CUnits designed for commercial or indu-strial applications .

Only for outdoor installation .

Cooling capacity from 21 up to 115 kW Heating capacity from 25 up to 147 kW

SH

R410Arefrigerant

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AvAilAble versions

� HEAT PUMP: with large operative range of outdoor air temperature (-17°C up to 40°C in he-ating mode); used for hydronic circuits with 2 tubes, during winter produces hot water up to 55°C even for very low outdoor air temperature, and during summer produces cold water .

� SILENT: unit equipped with soundproof compressors for limited noise levels .

� PARTIAL HEAT RECOVERY (desuperheater): an heat exchanger is inserted along the compressors discharge line before the condenser, it’s able to desuperheat the hot gas and produces hot water up to 55°C .

The amount of recovered energy is around the 30% of the cooling energy production .

The amount of recovered energy is around the 135% of the cooling energy production .

� CLIENT: units with special equipment or devices .


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structure of electro-gAlvAnized And pAinted steel sheet

ecologicAl refrigerAnt r410A

This refrigerant R410A with zero ozone depletion potential (ODP=0) together with a very low value for the global warming effective potential, is the best choice for circuits with scroll compressors .

Thanks to its characteristics of heat transfer and its heat capacity in the gas phase, allows high yields of condensers having small diameter tube, and can re-duce the airflow needed for condensation .

Features

R410A


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scroll compressors two or three high-efficiency scroll compressors, on each circuit refrigerator for maximum energy efficiency at partial loads .

The choice of scroll compressor allows you to have low vibration and noise emissions .Reliability is high thanks to the reduced number of moving parts and to the high capa-city of the compressor to adapt to many different conditions .

Due to its construction, hermetic scroll compressors withstand at flooded start much better than the piston or screw compressors (in faulty conditions) .

In addition thanks to have multiple com-pressors on the same circuit, when only one of them is started (this happen du-ring many hours in a year) it can work with oversized of the heat exchangers and this produce a bigger efficiency du-ring working conditions partialized .

The example is as follows:If a circuit with two compressors has a value of EER= 2 .70 W/W, when on the same circuit only one compressor opera-tes the EER value climbs to 3 .74 W/W; the result of this technology is that the value of ESEER (seasonal average efficiency) increases much more than in chillers with only one compressor per circuit .

finned coil exchAngers with high-efficiency design, equipped by internally grooved copper tubes for maximize the heat exchange, with small diameter to minimize the refrigerant charge .

The special design of the circuits, fins and tubes, allow to obtain excellent per-formances of heat exchange with the air, thanks to which the unit gets the ability to operate at very low outside air tempera-tures during the winterThe fins have, as standard, an hydrophilic surface treatment in order to obtain high performance of water drain during defro-sting of the finned coil .

Finned condenser

Scroll Compressor section


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brAzed plAtes evAporAtors specifically designed for R410A, made in stainless steel .

In addition to a very high mechanical re-sistance, due to the use of stainless steel, they have high corrosion resistance .These evaporators work in perfect countercurrent, and allow to have very high evaporation temperature compared other kind of evaporator, for maximize EER and COP performance .An integrated distributor guarantees a perfect equalization of the refrigerant gas flow inside each plate heat exchan-ger , for maximum performances .On heat pumps the evaporator commutates to condenser mode and produces hot water .

Brazed plate evaporator

AxiAl fAns

The chillers are normally supplied with fans equipped with AC motor, controlled by a fan speed controller (cut phase regu-lator) that allows the modulation of speed so as to manage the condensing pressure with the change of cooling load and outdoor air temperature .

Fans are available on request with a EC motor (Electronically Commutated Motor) that enable high performance .At full load, an EC motor saves 20% energy compared to a conventional AC motor, and the difference increases up to 57% when the comparison is made at partialized condi-tions, with the air flow capacity equal to half of the maximum flow . The higher cost of the fans with EC motor is repaid by the energy saving after about 2 years of unit work . In addition to energy saving the low axial fans speed,facilitate limited noise levels when the unit works during the night .

Fan with EC motor

Fan with AC motor


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thermostAtic expAnsion vAlves

Standard production is equipped by ther-mostatic expansion valves to ensure a re-turn of dry gas to the compressor .

electronic expAnsion vAlves on requestby request the unit can be equipped with electronic expansion valves .

These valves, via an electronic driver, a temperature sensor and a pressure transmitter, are able to provide a more precise value of superheating .

The graph below shows the effect of switching between the operation of a chiller with a TEV (thermostatic expansion valve) to an EEV (electronic expansion valve) . The lowering of the average superheat value, the stability of the value itself and the ope-rating pressure are clearly evident .

Its use is highly recommended in the case of heat pumps, where in winter operation, it allows to have a very low superheating (this allow COP increasing) and the correct fun-ction of unit also with much lower outdoor air temperatures, up to 3 °C less compared to use of thermostatic valves .

Carel controllers andElectronic Expansion Valve


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4-wAy reversing vAlve

Used for heat pump version converts the refrigerant circuit configuration from chil-ler to heat pump . When switched on, the unit is converted to heat pump (the chiller evaporator works at condenser mode and produces hot water) . When switched off the refrigerant circuit is converted to chiller mode (summer) or defrosting (winter) .

electronic regulAtion by A microprocessor cArd for the management and control of all functional parameters

The controls normally used is mC2-SE a pa-rametric products of Carel .The functions controlled are:

a . regulation on inlet water temperature, with the alternative possibility of adju-sting the output water temperature;

b . management of cooling or heating capacity with turning ON or OFF the compressors, depending on the request of the hydronic circuit; the control is such that the number of operating hours per year of each com-pressor, is the same for everyone;

c . prevent high pressure - this function al-lows you to turn off one of the compres-sors on the same circuit when the con-densing pressure rises too much;

d . reverse cycle for hot gas defrost;e . fan speed regulation (to handle the con-

densing pressure as a function of load and air ambient temperature) allows to use the chiller also in very low ambient temperatures;

f . management of evaporating pressure in heat pump mode - this feature allows the modulation of the fans when the outdoor air temperature is above 5-6 ° C to redu-ce noise emissions to a minimum level;

g . antifreeze heaters - a set of heaters pro-tect the parts of circuits containing water when their temperature (caused from low outdoor air temperature) drops be-low the safety threshold;

h . low noise mode – this feature as stan-dard on SILENT version, allows you to

change the fan speed adjustment in the night hours, with limited noise emission;

i . evaporator pump control; �backup evaporator pump; �rotation pumps (active only in the presence of double pump); �energy save mode (pump switched on only when needed) - this feature allows a considerable energy saving, trough turning ON the pump for only as long it is necessary - this function is useful when you have constant wa-ter flow on chiller side and variable water flow on the system side, by in-serting a manifold by-pass between them: the maximum benefit is obtai-ned when a buffer tank is installed;

j . water flow switch;k . variable set point of water temperature de-

pending on outdoor air temperature (sliding set temperature) or by external contact;

l . start compressors by external contacts (only condensing units);

m . communication with supervisory systems;n . anti freeze alarm;o . high – low pressure alarmsp . compressors alarmq . water flow alarmr . pump alarm

4 ways reversing valve

μC2SE


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operating ranges forcooling and heating

modes

hydronic circuit

The unit is normally equipped with Vic-taulic flexible couplings complete with clamps and solder terminals .On request the unit can be completed with the provision of pump, safety valve, water filter, buffer tank and backup pump .It is possible to choose between low pres-sure pump, and high pressure pump with standard performance .

For special requirements is possible to install special pumps, but in this case the buffer tank is not available .The circuits are protected against free-zing by heaters, down to outdoor air tem-perature of -15°C .The expansion vessel is not supplied .

operAting rAnge thank to the use of fan speed controller the operating range is very wide .


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versions And Accessories on demAnd

� N . . . . . . . . . .Basic

� R . . . . . . . . . . . .Partial recovery (desuperheater)

� S . . . . . . . . . .Silent

� CLIENT . .Special features on specific customer needs

� EEV . . . . . .Electronic expansion valve/s

� P1 . . . . . . . . .Hydronic Kit with pump, safety valve, water filter

� P2 . . . . . . . . .Hydronic Kit with double pump, safety valve, water filter

� P3 . . . . . . . . . Hydronic Kit with high pressure pump, safety valve, water filter

� P4 . . . . . . . .Hydronic Kit with double high pressure pump, safety valve, water filter

� P1S . . . . . . .P1 + Buffer tank, electric hea-ter and expansion vessel

� P2S . . . . . .P2 + Buffer tank, electric hea-ter and expansion vessel



� RIC . . . . . . . . configuration with bypass of pri-mary circuit integrated on unit

� RS485 . . .RS 485 serial interface (MODBUS protocol)

� RS232 . . .RS 232 serial interface

� LON . . . . .LonWorks interface

� KON . . . . .Konnex interface

� BAC1 . . . .Bacnet MS/TP interface

� BAC2 . . . .Bacnet Ethernet/IP interface

� WEB . . . . .WEB server for remote control

� CK . . . . . . . .Clock board

� RIF . . . . . . .Power factor corrector

� ST . . . . . . . .Low starting current device

� AV . . . . . . . .Anti-vibration mountings

� PR . . . . . . . .Remote control panel

� TP . . . . . . . .Tropical adaptation

� EF . . . . . . . .Fan with EC motor


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Size 25 34 43 60 75 97 113 129 147

Cooling capacity (kW) 21,6 27,7 36,6 48,1 58,8 80,1 91,1 101,1 114,7

Power input (kW) 7,4 10,1 12,5 18,0 24,0 29,0 35,4 43,4 48,9

Maximum power input at limit conditions (kW) 9,9 12,7 16,6 23,4 29,5 38,3 45,6 53,7 60,8

Maximum outdoor air temperature (°C) 46,0 42,5 44,0 44,0 40,5 44,5 43,5 41,0 40,7

Water flow (m3/h) 3,7 4,8 6,3 8,3 10,1 13,8 15,7 17,4 19,7

Pressure loss of hydronic circuit (kPa) 29 28 41 50 60 44 61 51 50

EER (kW/kW) 2,91 2,74 2,92 2,67 2,45 2,76 2,57 2,33 2,35

ESEER (kW/kW) 4,12 4,01 4,13 3,96 3,78 4,03 3,88 3,67 3,69

Heat capacity (kW) 24,9 33,1 42,6 59,3 74,3 96,1 113,0 128,5 146,9

Power input (heating mode) (kW) 7,0 9,0 11,4 16,5 20,8 27,0 31,9 37,8 42,2

Water flow (heating mode) (m3/h) 4,3 5,7 7,3 10,2 12,8 16,5 19,4 22,1 25,3

Pressure loss of hydronic circuit (kPa) 39 40 55 76 96 63 94 82 82

Minimum operating outdoor air temperature in heating mode (°C) -17,0 -17,0 -17,0 -17,0 -17,0 -17,0 -17,0 -17,0 -17,0

COP (kW/kW) 3,55 3,67 3,73 3,59 3,57 3,55 3,54 3,40 3,48

Sound pressure at 10m (dB(A)) 42,5 43,3 43,5 48,1 48,6 51,0 46,6 51,2 51,2

Total air flow (m3/h) 10500 10500 14000 19750 19750 37500 37000 37000 37000

Number of compressors (n .) 1 1 1 2 2 2 2 2 2

Number of circuits (n .) 1 1 1 1 1 1 1 1 1

Rated current at nominal conditions (A) 14 20 24 35 47 57 69 85 95

Maximum current at full load (A) 28 33 36 47 59 79 92 105 119

Maximum starting current (A) 105 149 162 165 186 240 254 268 305

Buffer tank capacity (lt) 25 25 330 330 330 330 330 330 330

Maximum operating pressure PS (bar) 6,0 6,0 6,0 6,0 6,0 6,0 6,0 6,0 6,0

Power input of low pressure pump (kW) 0,54 0,76 0,59 0,75 0,92 1,18 1,30 1,75 1,91

Amperage of low pressure pump (A) 1,1 1,6 1,2 1,5 1,9 2,4 2,7 3,6 3,9

Available pressure with low prevalence hydronic kit (kPa) 128 142 96 88 106 105 83 140 134

Power input of high pressure pump (A) NA NA 0,7 0,9 1,2 1,6 2,0 2,6 2,7

Amperage of high pressure pump (A) NA NA 1,5 1,9 2,5 3,3 4,2 5,3 5,6

Available pressure with high prevalence hydronic kit (kPa) NA NA 176 168 208 208 183 240 224

technicAl sheets shheAt pump - high energy efficiency - silent version

Technical daTa aT following condiTions cooling: waTer (in/ouT) 12/7°c; ouTdoor air 35°c; (evaporaTing 4,5°c for condensing uniT)

heaTing: waTer (in/ouT) 40/45°c; ouTdoor air 7°c d.b./87% rhfree cooling: waTer (in/ouT) 15/10°c, ouTdoor air 2°c

power supply: 400v - 3 - 50hz sound pressure on free field reflecTing surface (direcTiviTy facT. 2) according To iso 3744


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SHOutlet water temperature (°C) Outlet water temperature (°C)

5 7 10 40 45 50

Cc(kW)

Pi(kW)

Cc(kW)

Pi(kW)

Cc(kW)

Pi(kW)

Hc(kW)

Pi(kW)

Hc(kW)

Pi(kW)

Hc(kW)

Pi(kW)

Out

door

air

tem

pera

ture

(°C

)

32

25 27,2 2,4 27,2 2,4 27,2 2,4

Out

door

air

tem

pera

ture

(°C

)

-8

18,8 -2,0 18,8 -2,0 18,8 -2,0

34 34,9 3,3 34,9 3,3 34,9 3,3 25,0 -2,6 25,0 -2,6 25,0 -2,6

43 46,1 4,1 46,1 4,1 46,1 4,1 32,1 -3,3 32,1 -3,3 32,1 -3,3

60 60,6 5,9 60,6 5,9 60,6 5,9 44,8 -4,7 44,8 -4,7 44,8 -4,7

75 74,1 7,9 74,1 7,9 74,1 7,9 56,1 -6,0 56,1 -6,0 56,1 -6,0

97 100,9 9,6 100,9 9,6 100,9 9,6 72,5 -7,7 72,5 -7,7 72,5 -7,7

113 114,8 11,7 114,8 11,7 114,8 11,7 85,3 -9,1 85,3 -9,1 85,3 -9,1

129 127,4 14,3 127,4 14,3 127,4 14,3 97,0 -10,8 97,0 -10,8 97,0 -10,8

147 144,6 16,1 144,6 16,1 144,6 16,1 110,9 -12,1 110,9 -12,1 110,9 -12,1

Out

door

air

tem

pera

ture

(°C

)

35

25 27,2 2,4 27,2 2,4 27,2 2,4

Out

door

air

tem

pera

ture

(°C

)

-5

18,8 -2,0 18,8 -2,0 18,8 -2,0

34 34,9 3,3 34,9 3,3 34,9 3,3 25,0 -2,6 25,0 -2,6 25,0 -2,6

43 46,1 4,1 46,1 4,1 46,1 4,1 32,1 -3,3 32,1 -3,3 32,1 -3,3

60 60,6 5,9 60,6 5,9 60,6 5,9 44,8 -4,7 44,8 -4,7 44,8 -4,7

75 74,1 7,9 74,1 7,9 74,1 7,9 56,1 -6,0 56,1 -6,0 56,1 -6,0

97 100,9 9,6 100,9 9,6 100,9 9,6 72,5 -7,7 72,5 -7,7 72,5 -7,7

113 114,8 11,7 114,8 11,7 114,8 11,7 85,3 -9,1 85,3 -9,1 85,3 -9,1

129 127,4 14,3 127,4 14,3 127,4 14,3 97,0 -10,8 97,0 -10,8 97,0 -10,8

147 144,6 16,1 144,6 16,1 144,6 16,1 110,9 -12,1 110,9 -12,1 110,9 -12,1

SHOutlet water temperature (°C) Outlet water temperature (°C)

5 7 10 40 45 50

Cc(kW)

Pi(kW)

Cc(kW)

Pi(kW)

Cc(kW)

Pi(kW)

Hc(kW)

Pi(kW)

Hc(kW)

Pi(kW)

Hc(kW)

Pi(kW)

Out

door

air

tem

pera

ture

(°C

)

38

25 27,2 2,4 27,2 2,4 27,2 2,4

Out

door

air

tem

pera

ture

(°C

)

0

16,3 5,6 16,0 6,6 15,7 7,6

34 34,9 3,3 34,9 3,3 34,9 3,3 21,7 7,3 21,3 8,5 20,9 9,7

43 46,1 4,1 46,1 4,1 46,1 4,1 27,9 9,2 27,4 10,7 26,8 12,3

60 60,6 5,9 60,6 5,9 60,6 5,9 38,8 13,2 38,1 15,5 37,4 17,7

75 74,1 7,9 74,1 7,9 74,1 7,9 48,7 16,7 47,7 19,5 46,8 22,4

97 100,9 9,6 100,9 9,6 100,9 9,6 62,9 21,7 61,7 25,4 60,5 29,1

113 114,8 11,7 114,8 11,7 114,8 11,7 74,0 25,6 72,6 30,0 71,2 34,3

129 127,4 14,3 127,4 14,3 127,4 14,3 84,2 30,4 82,6 35,5 81,0 40,7

147 144,6 16,1 144,6 16,1 144,6 16,1 96,3 33,9 94,4 39,6 92,6 45,4

Out

door

air

tem

pera

ture

(°C

)

40

25 32,3 2,5 34,4 2,5 37,5 2,5

Out

door

air

tem

pera

ture

(°C

)

7

16,3 5,6 16,0 6,6 15,7 7,6

34 41,6 3,4 44,2 3,4 48,2 3,5 21,7 7,3 21,3 8,5 20,9 9,7

43 54,9 4,2 58,4 4,2 63,7 4,3 27,9 9,2 27,4 10,7 26,8 12,3

60 72,1 6,0 76,7 6,1 83,6 6,1 38,8 13,2 38,1 15,5 37,4 17,7

75 88,2 8,1 93,9 8,1 102,3 8,2 48,7 16,7 47,7 19,5 46,8 22,4

97 120,1 9,7 127,7 9,8 139,2 9,9 62,9 21,7 61,7 25,4 60,5 29,1

113 136,6 11,9 145,4 12,0 158,4 12,1 74,0 25,6 72,6 30,0 71,2 34,3

129 151,6 14,6 161,3 14,7 175,8 14,8 84,2 30,4 82,6 35,5 81,0 40,7

147 172,0 16,4 183,0 16,5 199,5 16,7 96,3 33,9 94,4 39,6 92,6 45,4

cc = cooling capaciTy ; pi = power inpuT; hc= heaTing capaciTy

correcTion facTors for silenT version: cooling capaciTy: 0,95; power inpuT: 1,055correcTion facTors for freecooling version: cooling capaciTy:0,97 power inpuT:1,02correcTion facTors for eThylen glicol percenTage and for difference TemperaTure of waTer aT inleT-ouTleT, see aT end of chapTer

cooling main value; heaTing main value

performAnces


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correction fActors for ethylene glycol content

Weight percentage of glycol % 0 10 20 30 40 50

Freezing point (°C) 0 -3,6 -8,8 -15,7 -24,9 -37,1

Minimum outlet water temperature allowed (°C) 5,5 1,9 -3,3 -10,2 -19,4 -31,6

Cooling capacity correction factor (dT=5°C) 1,000 0,993 0,985 0,978 0,970 0,963

correction fActors for differentiAl wAter temperAture in-out

Differential water temperature (Inlet - Outlet) °C 3 4 5 6 7 8 9 10

Cooling capacity correction factor 0,970 0,985 1,000 1,008 1,016 1,024 1,032 1,040

The Technical daTa in This documenT are noT binding. rigel impianTi s.r.l. keeps righTs To make any Technical modificaTions aT any Time wiThouT noTice due To iTs improvemenT process.


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DIMeNsIONaL DraWINGsunit sh sizes 25, 34


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unit sh sizes 43


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unit sh sizes 60, 75


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unit sh sizes 97, 113, 129, 147

Cold InnovationZona Industriale Padule - 06020, Gubbio (PG) - Italy

Tel . +39 075 929 11 13 Fax +39 075 929 92 94info@coldinnovation .it

www.coldinnovation.it

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Documents

SH - rigelimpianti.it · These evaporators work in perfect countercurrent, and allow to have very high evaporation temperature compared other kind of evaporator, for maximize EER