General information on refrigerant controllers

Transcription

1 General information on refrigerant controllers Condensing pressure controller The condensing or condenser pressure controller is a back pressure controller and its task is to maintain the condensing pressure of a refrigeration system at a specific minimum level. If when using two-way controllers there is the risk that the pressure in the receiver falls too low, a bypass line with a receiver pressure controller (differential pressure valve) must be included. When using a condensing pressure controller it should be ensured that the receiver volume and the refrigerant charge are assessed correctly. It regulates depending on the pressure at the inlet side. The condensing pressure regulator is installed at the outlet of the condenser. The selection is made on the basis of the manufacturers' performance data. Evaporating pressure regulators The evaporating or suction pressure regulator has the task of maintaining the evaporating pressure above a set value independent of cooling load fluctuations or capacity changes. It regulates depending on the pressure at the inlet side. The evaporating pressure controller is installed in the suction line after the evaporator. The selection is made on the basis of the manufacturers' performance data. Start controller The start controller has the task of protecting the compressor against overload due to excessively high suction pressure during start-up. (e.g. after defrosting the refrigeration system, long standstill periods) It regulates depending on the pressure at the outlet side. The start controller is installed in the suction line before the compressor. The selection is made on the basis of the manufacturers' performance data. Capacity controller The capacity or hot gas bypass controller has the task of adapting the compressor capacity to the evaporator capacity for fluctuating system capacities. It regulates depending on the compressor suction pressure by bypassing hot gas from the discharge side to the suction side. The capacity controller is either installed between discharge side and suction side or between discharge line and evaporator of a refrigeration system. When installing it between discharge side and suction side, it is necessary to install a reinjection valve for desuperheating the suction vapour. The selection is made on the basis of the manufacturers' performance data. Application and installation: There are two typical applications. Hot gas bypass into the evaporator inlet (100% capacity regulation possible) Fig.1 Hot gas bypass into the suction line (max. 40% capacity regulation) Fig.2 Temperature controller The temperature controller has the task of keeping the set media temperature constant by controlling the refrigerant mass flow at the evaporator outlet. It regulates depending on the sensor temperature. The temperature controller is installed in the suction line after the evaporator. The selection is made on the basis of the manufacturers' performance data. Edition 2014 Components Catalogue Page 4/87

2 Refrigerant Controllers Hot Gas Bypass Controller Series ACP Characteristics ALCO Direct acting hot gas bypass controllers Compact valve with angle solder connection Internal pressure equalisation Adjustment range: 1,0-6,0 bar abs Max. operating pressure: 31 bar Long service life due to high-quality materials and special manufacturing processes EDP-No. Connections ODF Nominal bypass capacity Q N [kw] Inlet Outlet R 134a R 407C R404A R507 ACP /4" 3 0,21 0,41 0,30 0,30 ACP /4" 3 0,50 0,89 0,68 0,68 ACP ,18 2,12 1,59 1,59 The nominal capacities are based on an evaporating temperature (saturated vapour) of +4 C and a condensing temperature (saturated liquid) of +38 C, as well as a liquid subcooling of 1K at the valve inlet. For other operating conditions see factors on page 4/89. Refrigerant Controller Hot Gas Bypass Controller Series CPHE Characteristics ALCO Direct acting hot gas bypass controllers Exchangeable valve inserts Valve bases with angle solder flange Valve bonnets with external pressure equalisation Adjustment range: -0,4-5,0 bar Max. operating pressure: 35 bar Long service life due to high-quality materials and special manufacturing processes Outstanding partial load behaviour due to double seat design of the valve inserts Special pipe connections and flanges available on request. Product name Nominal bypass capacity Q N [kw] Valve insert Standard flange Valve bonnet R134a R407C R404A R507 EDP-No. EDP-No. EDP-No. CPHE - 1 3,5 5,8 4,5 4,5 CPHE - 2 6,4 10,4 8,1 8,1 CPHE ,0 20,0 15,0 15,0 X B5B X B8B X B5B C MM Internal soldering 12 x A 576 MM Internal soldering 16 x Internal soldering 22 x CPHE - 3,5 13,0 22,0 17,0 17,0 X 9117-B7B X CPHE ,0 27,0 21,0 21,0 CPHE ,0 34,0 26,0 26,0 X 9117-B9B X 9166-B10B Internal soldering 22 x CPHE ,0 58,0 45,0 45,0 X 9144-B13B Internal soldering 22 x The nominal capacities are based on an evaporating temperature (saturated vapour) of +4 C and a condensing temperature (saturated liquid) of +38 C, as well as a liquid subcooling of 1 K at the valve inlet. For other operating conditions see factors on page 4/89. Dimensions Product name A [mm] CPHE CPHE CPHE CPHE-3,5 210 CPHE CPHE CPHE Page 4/88 Components Catalogue Edition 2014

3 Refrigerant Controller Hot Gas Bypass Controller Series ACP and CPHE Correction table for series ACP and CPHE ALCO For different evaporating temperatures the refrigerating capacity to be reduced, referred to as bypass capacity Q Byp, must be multiplied by the correction factor K Byp. The result is the nominal bypass capacity Q N, for which the controller must be selected. Q Byp x K Byp = Q N Refrigerant R134a R407C R404A R507 Condensing temperature [ C] Correction factor K Byp Evaporating temperature [ C] ,78 0,77 0,78 0, ,99 0,94 0,93 0, ,35 1,21 1,15 1, ,83 0,82 0,83 0, ,99 0,95 0,95 0, ,26 1,17 1,13 1, ,86 0,85 0,87 0,91 0,97 1, ,99 0,95 0,94 0,96 1,00 1, ,26 1,13 1,09 1,08 1,10 1, ,86 0,85 0,87 0,91 0,97 1, ,99 0,95 0,94 0,96 1,00 1, ,26 1,13 1,09 1,08 1,10 1,14 Edition 2014 Components Catalogue Page 4/89

4 Evaporating pressure controllers PRE Evaporating pressure controllers of the PRE series prevent the evaporating pressure from falling below a preset value. The most important application is the operation of multiple evaporators with different evaporating temperatures on a common suction line. Characteristics ALCO Compact housing for easy installation also under limited space conditions Schrader valve as standard equipment for easy adjustment Direct acting controller Balanced port design for precise control characteristics also under unfavourable conditions (pressure fluctuations) Adjustment range: 0,5-6,9 bar Factory setting: 2 bar Max. operating pressure: 25 bar Pressure change per rotation: PRE-11: 0,6 bar PRE-21: 0,4 bar Weight: PRE-11 0,6 kg PRE-21 1,3 kg Nominal capacity 1) Pipe connection Orig. Nr. EDP-No. [kw] Flare Solder Solder R 134a R404A R507 R 407C [UNF] [in] [mm] PRE-11A ,0 4,5 4,5 4, PRE-11B ,0 4,5 4,5 4, PRE-21C ,4 11,1 11,1 11,1 28 PRE-21D ,4 11,1 11,1 11,1 1 1 The nominal capacities are based on an evaporating temperature (saturated vapour) of +4 C and a condensing temperature (saturated liquid) of +38 C, as well as a liquid subcooling of 1K at the valve inlet. Correction table for series PRE ALCO Valve selection for operating conditions deviating from +38 C / +4 C and 1 K subcooling at the valve inlet. Q n x Q 0 = K t Q n = Nominal capacity of the valve Q 0 = Required refrigerating capacity PRE-*** Refrigerant R134a R407C R404A R507 Condensing temperature [ C] Correction factor K Byp Evaporating temperature [ C] ,04 1,51 2, ,92 1,34 1, ,83 1,20 1, ,76 1,10 1, ,02 1,42 2, ,94 1,31 1, ,84 1,17 1, ,77 1,06 1, ,35 1,91 2,77 4,18 6, ,05 1,46 2,07 3,05 4, ,88 1,22 1,71 2,48 3, ,77 1,06 1,48 2,12 3, ,35 1,91 2,77 4,18 6, ,05 1,46 2,07 3,05 4, ,88 1,22 1,71 2,48 3, ,77 1,06 1,48 2,12 3,13 Page 4/90 Components Catalogue Edition 2014

5 Start controller PRC Start controllers of the PRC series have the task of protecting the compressor motor against overload in systems in which high suction pressures can occur. High suction pressures can occur during start-up of a refrigeration system, under high cooling loads as well as after defros- Characteristics ALCO Compact housing for easy installation also under limited space conditions Schrader valve as standard equipment for easy adjustment Direct acting controller Balanced port design for precise control characteristics also under unfavourable conditions (pressure fluctuations) Adjustment range: 0,5-6,9 bar Factory setting: 2 bar Max. operating pressure: 25 bar Pressure change per rotation: PRC-11: 0,6 bar PRC-21: 0,4 bar Weight: PRC-11 0,6 kg PRC-21 1,3 kg Nominal capacity 1) Pipe connection Orig. Nr. EDP-No. [kw] Flare Solder Solder R 134a R404A R507 R 407C [UNF] [in] [mm] PRC-11A ,0 4,5 4,5 4, PRC-11B ,0 4,5 4,5 4, PRC-21C ,4 11,1 11,1 11,1 28 PRC-21D ,4 11,1 11,1 11,1 1 1 PRC-21E ,4 11,1 11,1 11, The nominal capacities are based on an evaporating temperature (saturated vapour) of +4 C and a condensing temperature (saturated liquid) of +38 C, as well as a liquid subcooling of 1K at the valve inlet. Performance tables for series PRC ALCO Valve selection for operating conditions deviating from +38 C / +4 C and 1 K subcooling at the valve inlet. (Capacities are based on a pressure drop of 0,07 bar) PRC-11* PRC-21* Refrigerant R134a R407C R404A R507 Refrigerant R134a R407C R404A R507 Evaporating temperature [ C] Capacity [kw] Valve setting [ C] ,1 3,9 5,3 1 2,4 4,7 7 3,3-6 3,1 4,8-1 2,9-27 1,6 2,9 3,7 3,9-20 1,9 3,5 4,5-14 2,2 4,5-10 3,1-27 1,6 2,9 3,7 3,9-20 1,9 3,5 4,5-14 2,2 4,5-10 3,1 Evaporating temperature [ C] Capacity [kw] Valve setting [ C] ,2 10,3 12,9 1 6,1 12, ,9 13,9-1 9,2-27 4,8 8,2 8,2 8,2-20 5,7 9,8 9,8-14 6,8 11,6-10 8,1-27 4,8 8,2 8,2 8,2-20 5,7 9,8 9,8-14 6,8 11,6-10 8,1 Edition 2014 Components Catalogue Page 4/91

6 Condensing Pressure Controllers KVR Characteristics DANFOSS The controller KVR is used to maintain a constant and sufficiently high condensing pressure in the air-conditioning units and refrigeration systems with air-cooled condensers. It regulates as a function of the input pressure. Vibration damping ensures long service life and precise control. Schrader valve for manometer connection Can be used as a relief valve between the high and low pressure sides Hermetically brazed housing For R 22, R 134a, R 404A, R 12, R 502 and other fluorinated refrigerants Control range: 5 to 17,5 bar Max. temperature: 105 C (130 C with Schrader valve removed) Min. temperature: -40 C Perm. operating pressure: 28 bar Orig. No. EDP-No. Nominal liquid capacity 1 ) (evaporator capacity) [kw] Nominal hot gas capacity 1 ) (evaporator capacity) [kw] Pipe connection R 134a R 404A R 507 R 407C R 134a R 404A R 507 R 407C Flare 2 ) Solder KVR L /4"UNF 034L mm KVR L ,3 36,6 36,6 54,4 11,6 12,0 12,0 14,3 7 UNF 034L mm KVR L mm KVR L mm 93,7 93,7 139,3 34,9 34,9 37,3 KVR L mm 1) Specified at t 0 = -10 C, condensing temperature t k = +30 C and a pressure drop across the valve of Δp = 0,2 bar for the liquid capacity and 0,4 bar for the hot gas capacity, offset = 3 bar 2) KVR is supplied without flare union nuts. Separate union nuts can be supplied. The chosen connection sizes must not be too small, since flow velocities over 40 m/s in the nozzles of the controller can cause flow noises. KVR 12 KVR 15 KVR 22 KVR 28 KVR 35 KVR 12 KVR 15 KVR 22 KVR 28 KVR 35 KVR 12 KVR 15 KVR 22 KVR 28 KVR 35 Condensing temperature t K [ C] Offset 3 bar Offset 3 bar Pressure drop Δp [bar] Pressure drop Δp [bar] 0,1 0,2 0,4 0,8 1,6 0,1 0,2 0,4 0,8 1,6 R 134a R 134a Liquid capacity Q 0 [kw] (Evaporator capacity) R 134a Hot gas capacity Q 0 [kw] (Evaporator capacity) ,7 57,5 81,4 115,0 163,0 5,4 7,6 10,7 14,7 19, ,1 52,5 74,2 105,0 149,0 5,6 7,9 11,1 15,4 20, ,4 47,3 66,9 94,7 134,0 5,8 8,2 11,6 16,1 21, ,7 42,0 59,4 84,1 119,0 6,0 8,5 11,9 16,6 22, ,9 36,6 51,8 73,3 104,0 6,1 8,6 12,1 16,9 23, ,0 147,0 208,0 295,0 418,0 14,4 20,2 28,2 38,8 51, ,9 134,0 190,0 269,0 361,0 15,0 21,0 29,5 40,8 55, ,5 121,0 171,0 242,0 343,0 15,5 21,8 30,6 42,5 57, ,0 108,0 152,0 215,0 305,0 15,9 22,4 31,5 43,9 60, ,3 93,7 133,0 188,0 266,0 16,1 22,7 32,0 44,7 61,7 R404A/R507 R404A/R507 Liquid capacity Q 0 [kw] (Evaporator capacity) R404A/R507 Hot gas capacity Q 0 [kw] (Evaporator capacity) ,9 46,4 65,6 92,9 131,3 5,8 8,1 11,3 15,8 21, ,4 41,6 58,8 83,2 117,6 6,1 8,4 11,8 16,5 22, ,9 36,6 51,8 73,3 103,7 6,1 8,5 12,0 16,8 23, ,4 31,6 44,7 63,3 89,7 6,1 8,6 12,1 16,9 23, ,8 26,6 37,6 53,2 75,4 6,1 8,6 12,1 16,9 23, ,0 118,7 168,0 238,3 337,1 15,8 22,2 31,1 43,2 58, ,2 106,1 150,2 213,2 301,4 16,7 23,5 33,1 46,1 63, ,3 93,7 132,3 188,0 265,7 17,6 24,8 34,9 48,7 67, ,2 81,0 114,5 161,7 228,9 18,3 25,9 36,4 51,0 70, ,1 68,0 96,2 136,5 193,2 18,9 26,6 37,5 52,6 73,2 R407C R407C Liquid capacity Q 0 [kw] (Evaporator capacity) R407C Hot gas capacity Q 0 [kw] (Evaporator capacity) ,9 65,0 91,9 130,0 184,1 6,5 9,1 12,7 17,6 24, ,3 59,8 84,7 119,8 169,6 6,8 9,6 13,5 18,8 25, ,4 54,4 77,0 109,0 154,3 7,1 10,2 14,3 19,9 27, ,9 49,4 69,8 98,8 139,8 7,5 10,7 14,9 21,0 29, ,0 43,9 62,0 87,9 124,4 7,8 11,1 15,6 22,0 30, ,6 166,3 235,2 332,9 471,1 17,1 24,0 33,6 46,7 63, ,2 153,1 216,6 306,5 433,8 18,0 25,4 35,7 49,8 68, ,5 139,3 197,1 278,9 394,7 19,0 26,8 37,7 52,6 72, ,3 126,2 178,7 252,7 357,7 19,9 28,2 39,7 55,6 77, ,4 112,3 158,8 224,8 318,2 20,8 29,3 41,3 57,9 80,5 Correction factors for the evaporating temperature: System capacity x Correction factor = Table capacity t 0 [ C] ±0 +10 R 134a 0,88 0,92 0,96 1,00 1,04 1,08 R 404A 0,85 0,9 0,95 1,00 1,05 1,09 R407C 0,89 0,89 0,96 1,00 1,03 1,07 R 507 0,84 0,84 0,95 1,00 1,05 1,10 Page 4/92 Components Catalogue Edition 2014

7 Receiver Pressure Controllers NRD Characteristics DANFOSS Receiver pressure controller for maintaining a sufficiently high receiver pressure for air-cooled refrigeration sytems (summer-winter operation) and heat recovery systems. NRD is a factory-set differential pressure controller which opens when the pressure drop across the valve is 1,4 bar and is fully opened at a pressure drop of 3,0 bar. Pipe connection Orig. No. EDP-No. kv-value 1) Solder Solder [in] [mm] NRD 12S ,86 12 NRD 12S ,86 1 /2" 1) kv-value is the flow rate in m3/h at a pressure drop across the valve of 1 bar, ρ = 1000 kg/m 3. Receiver Pressure Controllers KVD Characteristics DANFOSS The KVD is a modulating pressure controller. It opens when the pressure in the receiver falls and directs gas via a bypass in order to maintain the (adjustable) pressure in the receiver set at the controller. KVD and KVR constitute a control system for maintaining a constant and equal condensing and receiver pressure in systems with heat recovery as well as in air-conditioning units and refrigeration systems with air-cooled condensers. Modulating pressure controller Schrader valve for manometer connection Hermetically brazed housing For R 22, R 134a, R 407C R 404A, R 507 and other fluorinated refrigerants Control range: 3 to 20 bar Media temperature: -45 to 100 C Perm. operating pressure 28 bar Pipe connection Orig. No. EDP-No. kv-value 1) Flare Solder Solder [UNF] [in] [mm] KVD L ,75 3 /4" KVD L ,75 12 KVD L ,75 1 /2" KVD L ,75 7 KVD L , ) kv-value is the flow rate in m3/h at a pressure drop across the valve of 1 bar, ρ = 1000 kg/m 3. The chosen nominal connection diameter must not be too small since flow velocities over 40 m/s in the controller nozzle can cause flow noises. Edition 2014 Components Catalogue Page 4/93

8 Evaporating pressure controller KVP Characteristics DANFOSS The KVP is installed in the suction line after the evaporator. It is used for: 1. The maintenance of a constant evaporating pressure and consequently a constant surface temperature on the evaporator. The regulation is modulating. By throttling in the suction line, the amount of refrigerant is matched to the evaporator load. 2. Protection against too low evaporating pressure (e.g. to protect against freezing in a water cooler). The controller closes when the pressure in the evaporator falls below the set value. 3. Differentiation of the evaporating pressure of a refrigeration system with one compressor and multiple evaporators with different evaporating temperatures. Precise, adjustable pressure regulation Wide capacity and operating ranges Vibration damping Compact angle construction for easy installation in any position Hermetically brazed housing Available in many sizes in flare and ODF solder design For R 22, R 134a, R 404A, R 12, R 502 and other fluorinated refrigerants Control range: ±0 to +5,5 bar Max. temperature: 100 C Perm. operating pressure 18 bar Nominal capacity 1) Pipe connection Orig. No. EDP-No. [kw] Flare Solder Solder R 134a R404A R507 R 407C [UNF] [in] [mm] 034L /4" KVP L L /2" 2,8 3,6 3,6 3,7 034L KVP L KVP L L KVP L ,1 7,7 7,7 7,9 1 1 KVP L ) The nominal capacity is the capacity of the controller at evaporating temperature t 0 = -10 C, condensing temperature tk=+25 C, pressure loss in the controller Δp=0,2 bar, offset=0,6 bar. 2) KVR is supplied without flare union nuts. Separate union nuts can be supplied. The chosen connection size must not be too small, since gas velocities over 40 m/s in the nozzles of the controller can cause flow noises. Controller capacity Q 0 [kw] at offset = 0,6 bar KVP 12 KVP 15 KVP 22 KVP 28 KVP 35 Pressure drop in the controller Δp [bar] Offset 0,6 bar Evaporating temperature t 0 [ C] ±0 5 R 134a 0,1 1,8 2,1 2,3 2,6 2,9 3,2 3,6 3,9 0,2 2,5 2,8 3,2 3,6 4,0 4,5 5,0 5,5 0,3 2,9 3,4 3,8 4,3 4,9 5,4 6,0 6,6 0,4 3,2 3,7 4,3 4,9 5,5 6,1 6,8 7,6 0,5 3,4 4,0 4,6 5,3 6,0 6,8 7,5 8,3 0,6 3,5 4,2 4,9 5,7 6,4 7,3 8,1 9,0 0,1 3,9 4,5 5,0 5,6 6,2 6,9 7,6 8,4 0,2 5,3 6,1 6,9 7,8 8,7 9,6 10,6 11,7 0,3 6,3 7,2 8,2 9,3 10,4 11,6 12,9 14,2 0,4 6,9 8,0 9,2 10,5 11,8 13,2 14,6 16,2 0,5 7,3 8,6 10,0 11,4 12,9 14,5 16,1 17,9 0,6 7,5 9,0 10,5 12,1 13,8 15,6 17,4 19,3 The values specified in the performance table are based on the evaporator capacity at a liquid temperature t V =+25 C at the inlet of the thermostatic expansion valve, a pressure drop Δp in the controller as well as a controller offset s=0,6 bar. Dry saturated vapour at the inlet of the controller is preconditioned. When dimensioning, the evaporator capacity must be multiplied by a correction factor depending on the liquid temperature t V at the inlet of the thermostatic expansion valve and the permissible offset of the controller. The corrected capacity is then looked up in the performance table. Page 4/94 Components Catalogue Edition 2014

9 Controller capacity Q 0 [kw] at offset = 0,6 bar DANFOSS KVP 12 KVP 15 KVP 22 KVP 28 KVP 35 KVP 12 KVP 15 KVP 22 KVP 28 KVP 35 KVP 12 KVP 15 KVP 22 KVP 28 KVP 35 Pressure drop in the controller Δp [bar] Evaporating Pressure Controllers KVP Offset 0,6 bar Evaporating temperature t 0 [ C] ±0 5 R 404A 0,1 1,4 1,6 1,8 2,1 2,3 2,6 2,8 3,2 0,2 1,9 2,2 2,5 2,8 3,2 3,6 4,0 4,4 0,3 2,2 2,5 3,0 3,5 3,9 4,4 4,8 5,4 0,4 2,4 2,9 3,3 3,9 4,3 4,9 5,5 6,2 0,5 2,5 3,1 3,6 4,2 4,8 5,5 6,1 6,8 0,6 2,6 3,2 3,9 4,4 5,1 5,8 6,5 7,4 0,1 2,9 3,4 3,9 4,4 5,0 5,5 6,0 6,8 0,2 4,0 4,7 5,4 6,2 6,8 7,7 8,4 9,6 0,3 4,7 5,5 6,4 7,3 8,2 9,2 10,3 11,6 0,4 5,1 6,1 7,2 8,2 9,3 10,5 11,7 13,2 0,5 5,5 6,6 7,7 9,0 10,2 11,4 12,9 15,4 0,6 5,7 6,9 8,2 9,6 10,9 12,4 13,8 15,7 R 507 0,1 1,4 1,6 1,8 2,1 2,3 2,6 2,8 3,2 0,2 1,9 2,2 2,5 2,8 3,2 3,6 4,0 4,4 0,3 2,2 2,5 3,0 3,5 3,9 4,4 4,8 5,4 0,4 2,4 2,9 3,3 3,9 4,3 4,9 5,5 6,2 0,5 2,5 3,1 3,6 4,2 4,8 5,5 6,1 6,8 0,6 2,6 3,2 3,9 4,4 5,1 5,8 6,5 7,4 0,1 2,9 3,4 3,9 4,4 5,0 5,5 6,0 6,8 0,2 4,0 4,7 5,4 6,2 6,8 7,7 8,4 9,6 0,3 4,7 5,5 6,4 7,3 8,2 9,2 10,3 11,6 0,4 5,1 6,1 7,2 8,2 9,3 10,5 11,7 13,2 0,5 5,5 6,6 7,7 9,0 10,2 11,4 12,9 15,4 0,6 5,7 6,9 8,2 9,6 10,9 12,4 13,8 15,7 R 407C 0,1 1,6 1,8 2,0 2,3 2,7 3,0 3,3 3,6 0,2 2,2 2,5 2,8 3,2 3,7 4,1 4,6 5,1 0,3 2,6 3,0 3,4 3,9 4,4 4,9 5,5 6,2 0,4 2,8 3,3 3,8 4,4 5,1 5,7 6,3 7,1 0,5 2,9 3,6 4,2 4,8 5,5 6,2 7,0 7,9 0,6 3,1 3,7 4,5 5,1 5,9 6,7 7,5 8,4 0,1 3,4 3,9 4,5 5,0 5,7 6,3 7,1 7,9 0,2 4,6 5,4 6,1 6,9 7,9 8,8 9,8 10,9 0,3 5,4 6,4 7,3 8,4 9,5 10,7 11,8 13,3 0,4 6,0 7,0 8,2 9,4 10,8 12,1 13,5 15,2 0,5 6,4 7,6 8,9 10,3 11,8 13,3 14,9 16,8 0,6 6,5 7,9 9,4 11,0 12,7 14,3 16,1 18,1 The values specified in the performance table are based on the evaporator capacity at a liquid temperature t v = +25 C at the inlet of the thermostatic expansion valve, a pressure drop Δp in the controller as well as a controller offset s=0,6 bar. Dry saturated vapour at the inlet of the controller is preconditioned. When dimensioning, the evaporator capacity must be multiplied by a correction factor depending on the liquid temperature t v at the inlet of the thermostatic expansion valve and the permissible offset of the controller. The corrected capacity is then looked up in the performance table. Correction factors for the liquid temperature t V t V [ C] R 134a 0,92 0,96 1,0 1,05 1,10 1,16 R 404A/R 507 0,89 0,94 1,0 1,07 1,16 1,26 R 407 C 0,91 0,95 1,0 1,05 1,11 1,18 Correction factors for offset Offset [bar] 0,2 0,4 0,6 0,8 1,0 1,2 1,4 KVP 12 KVP 15 2,5 1,4 1,0 0,77 0,67 0,59 KVP 22 KVP28 KVP35 1,4 1,0 0,77 0,67 0,59 0,53 Edition 2014 Components Catalogue Page 4/95

10 Start Controllers KVL Characteristics DANFOSS Kvl start controllers are installed in the suction line before the compressor. The KVL protects the compressor motor against overload during start-up after long standstill periods or after the defrosting period (high pressure in the evaporator). Precise, adjustable pressure regulation Large capacity and operating ranges Vibration damping Compact angle construction for easy installation in any position Hermetically brazed housing Control range: 0,2 bis 6,0 bar Max. Medium temperature 150 C Perm. operating pressure: 18 bar Nominal capacity [kw] 1 ) Pipe connection Orig. No. EDP-No. Flare R 134a R 404A R 507 R 407C 2 ) Solder Solder [UNF] [in] [mm] 034L /4" KVL L ,3 6,3 6,3 6, L /2" 034L KVL L ,3 6,3 6,3 6, KVL L L KVL L ,2 15,9 15,9 16,4 1 1 KVL L ) The nominal capacity is the capacity of the controller at evaporating temperature t 0 = -10 C, condensing temperature t K =+25 C, Pressure drop in the controller Δp=0,2 bar. 2) KVR is supplied without flare union nuts. Separate union nuts can be supplied. The chosen connection size must not be too small, since gas velocities over 40 m/s in the nozzles of the controller can cause flow noises. Page 4/96 Components Catalogue Edition 2014

11 Start Controllers KVL Capacity R 134 a DANFOSS Pressure Max suction Maximum controller capacity Q 0 [kw] drop in the pressure at suction gas temperature t controller S at the outlet of the controller [ C] p Δp [bar] S [bar] ± ,8 1,2 2 2,9 3,3 3,1 2,2 0,3 0,1 3 2,9 3,3 3,7 4,1 4,1 2,4 4 2,9 3,3 3,7 4,1 4,6 5,1 4,4 0,7 5 2,9 3,3 3,7 4,1 4,6 5,1 5,6 5,6 1,8 6 2,9 3,3 3,7 4,2 4,6 5,1 5,6 6,2 6,7 KVL 12 KVL 15 KVL 22 KVL 28 KVL 35 0,2 0,3 0,1 0,2 0,3 1 2,6 1,6 2 4,2 4,7 4,4 3,1 0,4 3 4,2 4,7 5,3 5,9 5,8 3,4 4 4,2 4,7 5,3 5,9 6,5 7,2 5, ,2 4,7 5,3 5,9 6,5 7,2 7,9 8 2,6 6 4,2 4,7 5,3 5,9 6,5 7,2 7,9 9,5 8,7 1 3, ,2 5,8 5,5 3,8 0,5 3 5,2 5,8 6,5 7,2 7,1 4,2 4 5,2 5,8 6,5 7,2 8,0 8,9 7,3 1,1 5 5,2 5,8 6,5 7,2 8,0 8,9 9,8 9,8 3,2 6 5,8 6,5 7,2 8,0 8,9 9,8 10,7 10,7 11,7 1 4,0 2,5 2 7,3 7,8 6,9 4,8 0,6 3 7,3 8,2 9,3 10,3 9,1 5,2 4 7,3 8,2 9,3 10,3 11,5 12,7 9,2 1,4 5 7,3 8,2 9,3 10,3 11,5 12, ,6 3,9 6 7,3 8,2 9,3 10,3 11,5 10,7 14,0 15,4 15,3 1 5,6 3,5 2 10,5 11,1 9,8 6,7 0,9 3 10,5 11,8 13,2 14,7 12,9 7,2 4 10,5 11,8 13,2 14,7 16,3 18,1 13, ,5 11,8 13,2 14,7 16,3 18,1 19,9 17,8 5,6 6 10,5 11,8 13,2 14,7 16,3 18,1 19,9 21,9 15,3 1 6,9 4,3 2 12,9 13,7 12,1 8,2 1,1 3 12,9 14,5 16,2 18,1 15, ,9 14,5 16,2 18,1 20,1 22,2 5 12,9 14,5 16,2 18,1 20,1 22,2 24,5 21,9 6,8 6 12,9 14,5 16,2 18,1 20,1 22,2 24,5 26,9 26,6 The values specified in the performance tables are based on the evaporator capacity at a liquid temperature t V =25 C at the inlet of the thermostatic expansion valve. Correction factors When dimensioning, the evaporator capacity must be multiplied by a correction factor depending on the liquid temperature t v at the inlet of the thermostatic expansion valve. The corrected capacity is then looked up in the performance table. t V [ C] R 134a 0,88 0,92 0,96 1,00 1,05 1,10 1,16 1,23 1,31 System capacity x Correction factor = Table value Edition 2014 Components Catalogue Page 4/97

12 Start Controllers KVL Capacity R 404A / R 507 DANFOSS Pressure Max suction Maximum controller capacity Q 0 [kw] drop in the pressure at suction gas temperature t controller S at the outlet of the controller [ C] p Δp [bar] S [bar] ± ,9 2 2,5 2,4 1,7 0,3 0,1 3 2,5 2,9 3,2 3,2 1,9 4 2,5 2,9 3,2 3,6 4,0 3,4 0,5 5 2,5 2,9 3,2 3,6 4,0 4,5 4,5 1,5 6 2,5 2,9 3,2 3,6 4,0 4,5 4,9 5,5 2,1 KVL 12 KVL 15 KVL 22 KVL 28 KVL 35 0,2 0,3 0,1 0,2 0,3 1 1,3 2 3,6 3,4 2,5 0,4 3 3,6 4,0 4,6 4,5 2,7 4 3,6 4,0 4,6 5,1 5,7 4,8 0,8 5 3,6 4,0 4,6 5,1 5,7 6,3 6,4 2,2 6 3,6 4,0 4,6 5,1 5,7 6,3 7,0 7,8 2,9 1 1,6 2 4,4 4,2 3,0 0,4 3 4,4 5,0 5,6 5,6 3,3 4 4,4 5,0 5,6 6,3 7,0 5,9 1,0 5 4,4 5,0 5,6 6,3 7,0 7,8 7,8 2,6 6 4,4 5,0 5,6 6,3 7,0 7,8 8,6 9,6 3,5 1 2,0 2 5,9 5,4 3,7 0,5 3 6,2 7,1 8,0 7,2 4,2 4 6,2 7,1 8,0 9,1 10,0 7,4 1,2 5 6,2 7,1 8,0 9,1 10,0 11,2 10,1 3,3 6 6,2 7,1 8,0 9,1 10,0 11,2 12,4 12,4 4,4 1 2,7 2 8,4 7,6 5,4 0,9 3 8,9 10,1 11,4 10,3 5,9 4 8,9 10,1 11,4 12,9 14,3 10,6 1,7 5 8,9 10,1 11,4 12,9 14,3 15,9 14,4 4,6 6 8,9 10,1 11,4 12,9 14,3 15,9 17,5 17,6 6,3 1 3,1 2 10,4 9,3 6,5 1,1 3 10,9 12,5 14,0 12,5 7,2 4 10,9 12,5 14,0 15,8 17,6 13,0 2,1 5 10,9 12,5 14,0 15,8 17,6 19,6 17,7 5,6 6 10,9 12,5 14,0 15,8 17,6 19,6 21,6 21,7 7,7 The values specified in the performance tables are based on the evaporator capacity at a liquid temperature t V = 25 C at the inlet of the thermostatic expansion valve. Correction factors When dimensioning, the evaporator capacity must be multiplied by a correction factor depending on the liquid temperature t v at the inlet of the thermostatic expansion valve. The corrected capacity is then looked up in the performance table. t V [ C] R 404A/R 507 0,84 0,89 0,94 1,00 1,07 1,16 1,26 1,40 1,57 System capacity x Correction factor = Table value Page 4/98 Components Catalogue Edition 2014

13 Start Controllers KVL Capacity R 407C DANFOSS Pressure Max suction Maximum controller capacity Q 0 [kw] drop in the pressure at suction gas temperature t controller S at the outlet of the controller [ C] p Δp [bar] S [bar] ± ,6 1,0 2 2,5 2,8 2,7 1,9 0,2 0,1 3 2,5 2,8 3,2 3,6 3,6 2,0 4 2,5 2,8 3,2 3,6 4,1 4,6 3,6 0,1 5 2,5 2,8 3,2 3,6 4,1 4,6 5,1 4,9 1,0 6 2,5 2,8 3,2 3,6 4,1 4,6 5,1 5,6 6,0 1,3 KVL 12 KVL 15 KVL 22 KVL 28 KVL 35 0,2 0,3 0,1 0,2 0,3 1 2,2 1,5 2 3,5 4,0 3,8 2,7 0,2 3 3,5 4,0 4,6 5,3 5,0 2,9 4 3,5 4,0 4,6 5,3 5,9 6,5 5,1 0,1 5 3,5 4,0 4,6 5,3 5,9 6,5 7,3 6,9 6 3,5 4,0 4,6 5,3 5,9 6,5 7,3 8,0 8,4 1,8 1 2,7 1,7 2 4,4 5,0 4,7 3,3 0,3 3 4,4 5,0 5,7 6,4 6,2 3,5 4 4,4 5,0 5,7 6,4 7,2 8,1 6,2 0,2 5 4,4 5,0 5,7 6,4 7,2 8,1 8,9 8,5 1,6 6 4,4 5,0 5,7 6,4 7,2 8,1 8,9 9,9 10,3 2,2 1 3,4 2,2 2 6,2 6,8 6,1 4,1 0,4 3 6,2 7,1 8,1 9,2 8,0 4,3 4 6,2 7,1 8,1 9,2 10,3 11,3 7,9 0,2 5 6,2 7,1 8,1 9,2 10,3 11,6 12,8 10,9 2,1 6 6,2 7,1 8,1 9,2 10,3 11,6 12,8 14,2 13,3 2,7 1 4,9 3,1 2 8,9 9,6 8,5 5,8 0,2 3 8,9 10,1 11,5 13,1 11,3 6,1 4 8,9 10,1 11,5 13,1 14,6 16,1 11,2 0,3 5 8,9 10,1 11,5 13,1 14,6 16,4 18,2 15,4 3,0 6 8,9 10,1 11,5 13,1 14,6 16,4 18,2 20,1 18,8 3,9 1 5,9 3,8 2 10,9 11,9 10,5 7,1 0,5 3 10,9 12,6 14,2 16,0 13,9 7,5 4 10,9 12,6 14,2 16,0 17,9 19,8 13,7 0,3 5 10,9 12,6 14,2 16,0 17,9 20,1 22,4 18,8 3,6 6 10,9 12,6 14,2 16,0 17,9 20,1 22,4 24,7 23,1 4,8 The values specified in the performance tables are based on the evaporator capacity at a liquid temperature t V = 25 C at the inlet of the thermostatic expansion valve. Correction factors When dimensioning, the evaporator capacity must be multiplied by a correction factor depending on the liquid temperature t v at the inlet of the thermostatic expansion valve. The corrected capacity is then looked up in the performance table. t V [ C] R 407C 0,88 0,91 0,95 1,00 1,05 1,11 1,18 1,26 1,35 System capacity x Correction factor = Table value Edition 2014 Components Catalogue Page 4/99

14 Capacity Controllers KVC Characteristics DANFOSS The KVC is a Placed in a bypass between high and low pressure sides of the refrigeration system, KVC imposes a lower limit on the suction pressure of the compressor by letting hot gas overflow from the high pressure side to the low pressure side. Exact, adjustable pressure regulation Wide capacity and operating ranges Vibration damping Compact angle construction for easy installation Hermetically brazed design For R 22, R 134a, R 404A, R 12, R 502 and other fluorinated refrigerants Control range: 0.2 to 6,0 bar Max. Medium temperature 150 C Perm. operating pressure: 28 bar Pipe connection Nominal capacity [kw] Orig. No. EDP-No. 1 ) Flare 2 ) Solder Solder R 134a R 404A R 507 R 407C [UNF] [in] [mm] 034L /4" KVC L ,8 6,9 6,9 8, L /2" 034L KVC 15 9,4 13,6 13,6 16,4 034L KVC L ,0 17,4 17,4 21, ) The nominal capacity is the capacity of the controller at evaporating temperature t 0 = -10 C, condensing temperature t K =+25 C, Offset=0,7 bar 2 ) KVR is supplied without flare union nuts. Separate union nuts can be supplied. The chosen connection size must not be too small, since gas velocities over 40 m/s in the nozzles of the controller can cause flow noises. If the discharge line temperature, according to the compressor specifications, is too high, it is recommended to install an injection valve into a bypass between the liquid line and the suction line of the compressor. Spare capacity R 134a DANFOSS Offset Q 1 ) [kw] at suction gas temperature t S after the pressure reduction [ C] Δp [bar] ,10 1,4 1,4 1,5 1,7 1,7 0,15 2,1 2,3 2,4 2,5 2,6 0,20 2,9 3,0 3,1 3,2 3,4 KVC 12 0,30 3,7 3,9 4,1 4,3 4,5 0,50 4,2 4,3 4,5 4,8 4,9 0,70 4,4 4,5 4,8 5,0 5,2 1,00 4,8 5,0 5,2 5,5 5,8 1,20 5,1 5,4 5,6 5,8 6,1 0,10 2,1 2,3 2,4 2,5 2,6 0,15 2,9 3,0 3,1 3,2 3,4 0,20 3,7 3,9 4,1 4,3 4,5 KVC 15 0,30 5,1 5,4 5,6 5,8 6,1 0,50 7,4 7,7 8,0 8,4 8,7 0,70 8,7 9,1 9,4 9,9 10,2 1,00 9,9 10,2 10,7 11,3 11,7 1,20 10,6 11,1 11,6 12,2 12,6 0,10 2,3 2,4 2,5 2,6 2,8 0,15 3,2 3,3 3,5 3,6 3,7 0,20 4,3 4,4 4,6 4,9 5,1 KVC 22 0,30 5,2 5,5 5,7 6,0 6,3 0,50 8,9 9,3 9,7 10,1 10,5 0,70 11,0 11,6 12,0 12,6 13,1 1,00 13,7 14,3 14,9 15,6 16,3 1,20 15,0 15,7 16,3 17,2 17,8 1) The nominal capacities are based on a liquid temperature t V = 25 C at the inlet of the evaporator Correction factors When dimensioning, the bypass capacity must be multiplied by a correction factor depending on the liquid temperature t K. The corrected capacity is then found in the performance table. t V [ C] R 134 a 0,90 0,93 0,96 1,00 1,05 1,10 1,13 1,18 1,24 Page 4/100 Components Catalogue Edition 2014

15 Spare capacity R 404A/R 507 DANFOSS KVC 12 KVC 15 KVC 22 Spare capacity R 407 C DANFOSS Capacity Controllers KVC Offset Q 1 ) [kw] at suction gas temperature t S after the pressure reduction [ C] Δp [bar] ,10 1,9 2,0 2,1 2,2 2,3 2,4 0,15 3,0 3,1 3,3 3,4 3,5 3,6 0,20 3,9 4,1 4,2 4,5 4,7 4,7 0,30 5,1 5,4 5,6 5,8 6,0 6,1 0,50 5,7 6,0 6,4 6,6 6,8 7,0 0,70 6,0 6,4 6,6 6,9 7,2 7,3 1,00 6,6 6,9 7,2 7,5 7,8 8,0 1,20 7,0 7,4 7,7 8,0 8,4 8,5 0,10 3,0 3,1 3,3 3,4 3,5 3,6 0,15 3,9 4,1 4,2 4,5 4,7 4,7 0,20 5,1 5,4 5,6 5,8 6,0 6,1 0,30 7,0 7,4 7,7 8,0 8,4 8,5 0,50 10,1 10,6 11,1 11,6 12,0 12,3 0,70 11,8 12,5 13,0 13,6 14,1 14,4 1,00 13,5 14,2 14,8 15,5 16,1 16,4 1,20 14,5 15,3 16,0 16,6 17,3 17,7 0,10 3,2 3,3 3,5 3,6 3,7 3,8 0,15 4,3 4,6 4,8 5,0 5,2 5,3 0,20 5,8 6,1 6,4 6,7 7,0 7,1 0,30 8,2 8,6 8,9 9,3 9,8 9,9 0,50 12,1 12,8 13,4 13,9 14,4 14,7 0,70 15,2 16,0 16,6 17,4 18,1 18,4 1,00 18,8 19,8 20,7 21,5 22,4 22,8 1,20 20,5 21,6 22,6 23,5 24,5 25,0 Offset Q 1 ) [kw] at suction gas temperature t S after the pressure reduction [ C] Δp [bar] R 407C 0,10 2,4 2,6 2,7 2,8 2,9 3,0 0,15 3,7 3,9 4,0 4,2 4,3 4,6 0,20 4,8 5,0 5,2 5,4 5,6 5,8 KVC 12 0,30 6,3 6,5 6,9 7,0 7,2 7,6 0,50 7,0 7,3 7,7 7,9 8,1 8,6 0,70 7,4 7,7 8,1 8,4 8,7 9,0 1,00 8,1 8,5 8,8 9,1 9,4 9,8 1,20 8,7 9,1 9,5 9,8 10,1 10,6 0,10 3,7 3,9 4,0 4,2 4,3 4,6 0,15 4,8 5,0 5,2 5,4 5,6 5,8 0,20 6,3 6,5 6,9 7,0 7,2 7,6 KVC 15 0,30 8,7 9,1 9,5 9,8 10,1 10,6 0,50 12,4 12,9 13,5 14,0 14,4 15,0 0,70 14,5 15,2 15,9 16,4 16,9 17,7 1,00 16,5 17,3 18,2 18,7 319,2 20,2 1,20 17,8 18,6 19,5 20,1 20,8 21,7 0,10 3,9 4,1 4,3 4,4 4,6 4,8 0,15 5,4 5,6 5,9 6,1 6,2 6,5 0,20 7,2 7,5 8,0 8,1 8,3 8,8 KVC 22 0,30 8,9 9,2 9,7 10,0 10,3 10,8 0,50 14,9 15,5 16,4 16,8 17,3 18,1 0,70 18,7 19,4 20,4 21,0 21,6 22,7 1,00 22,7 24,0 25,2 26,0 26,8 27,9 1,20 25,2 26,3 27,7 28,5 29,3 30,7 1) The nominal capacities are based on a liquid temperature t V = 25 C at the inlet of the evaporator Correction factors When dimensioning, the bypass capacity must be multiplied by a correction factor depending on the liquid temperature t K. The corrected capacity is then found in the performance table. t V [ C] R 404A/R 507 0,84 0,89 0,94 1,00 1,07 1,16 1,26 1,40 1,57 R 407C 0,88 0,91 0,95 1,00 1,05 1,11 1,11 1,26 1,35 Edition 2014 Components Catalogue Page 4/101

16 Capacity Controllers CPCE and LG Characteristics DANFOSS CPCE is used as a capacity controller for adapting the compressor capacity to the actual evaporator load. The CPCE is installed in a bypass between the low and high pressure sides of refrigeration systems. It is specially designed for hot gas induction between the evaporator and the thermostatic expansion valve. Injection should be done by an LG liquid gas mixer. Excellent control accuracy. Direct connection to the suction line regulates hot gas induction independent of the pressure drop in the evaporator. The LG ensures homogeneous mixing of liquid and gaseous refrigerants in the evaporator. Suitable for use with R 22, R 134a, R 404A, R507, R407C and other fluorinated refrigerants. The addition of hot gas into the evaporator ensures better oil transport to the compressor. Protection against low evaporating temperatures, i.e. prevents icing of the evaporator. LG by itself can be used for adding hot gas when hot gas defrosting. Control range: 0 to 6 bar Maximum medium temperature: 140 C Perm. operating pressure: 21,5 bar Maximum test pressure: 28 bar Capacity Controllers Pipe connection Nominal capacity Orig. No EDP-No. 1) [kw] Flare Solder Solder R 134a R 404A R 507 R 407C [UNF] [in] [mm] 034N /4" CPCE 12 7,9 16,4 16,4 19,0 034N /2" 12 CPCE N ,6 24,2 24,2 27, CPCE N ,2 32,0 32,0 37, ) The nominal capacity is the controller capacity at a suction gas temperature of t S =-10 C and a condensing temperature of t k =+25 C. Subcooling temperature Δt S =4 K. Liquid gas mixer Pipe connection [mm] Orig. No. EDP-No. Expansion valve Hot gas Liquid distributor Solder ODM Solder ODF Solder ODF [in] [mm] [in] [mm] [in] [mm] LG G /2" LG G /2" LG G LG G Dimensioning The following specifications should be available for the selection of a CPCE capacity controller: Refrigerant Min. suction gas temperature t S Compressor capacity P V at min. suction gas temperature Min. evaporator capacity Q 0 Condensing temperature t k The controller capacity can then be calculated as the compressor capacity minus the evaporator capacity at minimum suction gas temperature and condensing temperature. The LG liquid gas mixer is dimensioned according to the connection nozzles. Capacity The capacities resulted by reducing the suction pressure / the suction gas temperature by Δt S = 4K. The specified suction gas temperatures are minimum values, i.e. values after the reduction. The specified capacities are composed of the hot gas capacity of the CPCE controller as well as the additional capacity of the thermostatic expansion valve in order to keep the superheat constant across the evaporator. Correction factors Suction gas temperature t S after the reduction [ C] Refrigerant suction gas temperature Δt S [K] R 134a 0,1 0,5 0,9 1,0 1,0 1,0 1,0 R 404A, R 507 0,3 0,9 1,0 1,0 1,0 1,0 1,0 ±0 R 134a 0,1 0,3 0,7 1,0 1,0 1,0 1,0 R 404A, R 507 0,2 0,9 1,0 1,0 1,0 1,0 1,0-10 R 134a 0,1 0,3 0,6 1,0 1,0 1,4 1,4 R 404A, R 507 0,1 0,5 1,0 1,0 1,0 1,0 1,0-20 R 134a 0,1 0,3 0,6 1,0 1,5 2,2 2,4 R 404A, R 507 0,1 0,3 0,7 1,0 1,0 1,0 1,0-30 R 134a 0,1 0,3 0,6 1,0 1,5 2,2 2,9 R 404A, R 507 0,1 0,3 0,6 1,0 1,3 1,4 1,4-40 R 404A, R 507 0,1 0,3 0,6 1,0 1,5 2,0 2,2 The correction table is used when the suction gas temperature change differs from 4 K. The table values are then multiplied by the found correction factor. Page 4/102 Components Catalogue Edition 2014

17 Capacity R 134a DANFOSS CPCE 12 CPCE 15 CPCE 22 Capacity R 404A/R 507 DANFOSS CPCE 12 CPCE 15 CPCE 22 CPCE 12 CPCE 15 CPCE 22 Capacity Controllers CPCE and LG Suction gas temperature t S after the pressure/temperature Controller capacity Q [kw] at condensing temperature t K [ C] reduction [ C] ,3 10,4 14,4 18,0 22,6 ±0 7,8 11,3 14,4 18,1 22,6-10 5,8 7,9 10,8 14,4 18,1-20 3,4 4,6 6,1 8,3 10,6-30 2,0 2,8 3,7 4,9 6, ,3 15,2 21,1 26,5 33,2 ±0 11,4 16,6 21,2 26,6 33,2-10 8,3 11,6 15,7 21,1 26,6-20 4,8 6,6 8,8 11,9 15,2-30 2,6 3,5 4,9 6,4 8, ,1 20,4 28,0 35,2 43,9 ±0 15,1 22,8 28,1 35,2 43, ,9 15,2 20,9 27,7 35,2-20 6,4 8,8 11,8 15,7 20,3-30 3,7 5,0 6,8 8,9 11,3-40 Suction gas temperature t S after the pressure/temperature Controller capacity Q [kw] at condensing temperature t K [ C] reduction [ C] ,5 15,5 20,6 25,7 31,1 ±0 12,2 16,4 20,6 25, ,9 16,4 20,7 25, ,1 16,4 20, ,3 13,8 17,9-40 5,5 7,5 9, ,0 22,8 30,3 37,8 46,9 ±0 18,0 24,2 30,3 37, ,1 24,2 30,4 37, ,1 24,3 30, ,0 20,3 26,5-40 8,0 10,6 13, ,6 30,2 40,1 49,9 62,3 ±0 23,8 32,0 40,1 49, ,3 32,0 40,1 50, ,3 23,1 40, ,9 26,7 34, ,6 14,2 18 Leistung R 407 C DANFOSS Suction gas temperature t S after the pressure/temperature Controller capacity Q [kw] at condensing temperature t K [ C] reduction [ C] ,7 18,3 23,5 28,2 33,4 ±0 14,4 19,0 23,2 27, ,1 19,0 23,3 27, ,1 18,8 23,1 27,4-30 8,7 11,7 15,0 18,0-40 4,6 5,9 7, ,1 26,9 34,6 41,4 49,0 ±0 21,1 27,9 34,2 41, ,2 27,9 34,2 40, ,1 27,6 33,9 40, ,5 17,0 21,6 26,3-40 6,3 8,1 10, ,7 35,5 45,8 54,9 64,9 ±0 28,0 37,0 45,4 54, ,4 37,1 45,4 53, ,3 36,6 44,8 53, ,8 22,6 28,7 34,8-40 8,6 11,1 14,3 Edition 2014 Components Catalogue Page 4/103

18 Venturi - Distributors Application Subdividing the evaporator into several parallel sections of equal pipe length and equal heat transfer capacity offers advantages where, due to the required surface, very long evaporator pipes would be a result. The advantage: When connecting large pipe lengths of the same diameter in series, the transfer capacity does not increase to the same extent as the surface according to the pipe length. The extended flow path with simultaneous increased refrigerant throughput results in a strong increase of the pressure drop. This results in an increased gas volume which leads to a reduction of the refrigerant amount drawn in by the compressor - thus also to a reduction of refrigerating capacity. Evaporators are therefore subdivided into several parallel sections with a relatively short pipe length. The individual sections are fed by a liquid distributor which has the task of distributing the refrigerant-vapour mixture coming from the throttling device equally to the individual sections. Since liquid distributors are not controllers, but rather only additional devices, they are not able to adjust the refrigerant supply according to the different demands of the individual sections. equal pipe lengths equal flow resistance equal transfer capacity and the distributor pipes to the individual coils have equal lengths and diameters. Installation The liquid distributor should be installed in vertical position. The distributor pipes must be of equal length. The liquid distributor can be mounted directly on the expansion valve. If a pipe bend between expansion valve and liquid distributor cannot be avoided, then a straight piece of pipe should be installed between the pipe bend and the liquid distributor, whose length is at least 7 times the pipe diameter. Nominal capacity Q N per distributor pipe kw Evaporating Capacity in kw for 1 m distributor pipe with Δp = 1 bar temperature Outer diameter of the distributor pipes Ø 6 mm t 0 C R 134a R 407C R 404A / R ,30 5,30 3,30 ± 0 2,30 3,70 2, ,60 2,60 1, ,10 1,80 1, ,79 1,30 0, ,55 0,88 0, ,41 0,65 0, ,27 0,43 0,27 The specified values are based on a liquid temperature t u = 35 C and a pipe length of 1 m. The pressure drop (across distributor and distributor pipes) at nominal capacity is approx. 1 bar. Example Given: Evaporator capacity Q 0 = 30 kw Refrigerant R407C Evaporating temp. t 0 = -10 C Injection n = 10-fold Distributor pipe length I = 0,8 m correction Korrekturfaktor factor K I Diagram: Pipe length correction factor K I ,3 0,4 0,5 0,6 0,7 0,8 0,9 1,5 2,0 1,0 Distributor Verteilerrohrlänge pipe length I (m) From the pipe length-correction factor diagram the factor K I =1,12 is obtained for the distributor pipe length 0,8 m. Using the equation Q RI = Q 0 n. K I 30 the length-compensated distributor capacity is determined: Q RI= = 2,67 kw 10. 1,12 Selection EDP-No. Designation Venturi distributor 12/6/2 (VK 0) Venturi distributor 12/6/3 (VK 0) Venturi distributor 12/6/4 (VK I) Venturi distributor 12/6/5 (VK I) Venturi distributor 16/6/4 (VK II) Venturi distributor 16/6/5 (VK II) Venturi distributor 16/6/6 (VK II) Venturi distributor 16/6/7 (VK II) Venturi distributor 16/6/8 (VK II) Venturi distributor 16/6/9 (VK III) Venturi distributor 16/6/10 (VK III) Venturi distributor 16/6/11 (VK III) Venturi distributor 16/6/12 (VK III) Page 4/108 Components Catalogue Edition 2014

19 Condensing Pressure Control Valve ORI, ORD, OROA These products are distributed primarily in Switzerland Characteristics SPORLAN Condensing pressure control valves were developed in order to ensure smooth operation of refrigeration systems with air-cooled condensers in the winter. If the condenser is designed properly, then there are no problems operating the system at high outside temperatures in the summer. If the system needs to be operated at cold outside temperatures, however, some problems exist if no corresponding control system is in place. For very low condensing pressures, the differential pressure at the expansion valves can become too little in winter. The result is a mass flow which is too low in relation to the compressor capacity because the evaporators are not sufficiently charged and the system oscillates to the off position via the low pressure switch. In order to solve these problems, the flow of refrigerant condensate to the receiver is reduced by means of a condensing pressure control valve. In this way, liquid refrigerant is accumulated in the condenser and therefore the effective heat transfer surface for condensation is reduced. This creates an increase in pressure on the discharge side. By transferring hot gas into the receiver (in many cases via a hot gas differential pressure valve) the pressure in the liquid line is then increased. Thus there is enough differential pressure for correct operation of the expansion valves again. For various reasons, in Germany, Sporlan condensing pressure controllers of the model series ORI(T) are preferred to the other Sporlan models OROA-5 and LAC. Technical data and dimensions Standard factory settings EDP-No. Pipe connection Dimensions Solder ODF A B C D E F G I Inlet 1 Inlet ➁ Outlet [barg] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [in] [in] [in] ORI /225-H 8,3 on request ORI /225-H ORD , ORD , OROA-5 12, ,5 on request on request Dimension drawing and type code Edition 2014 Components Catalogue Page 4/109

20 Condensing Pressure Control Valve These products are distributed primarily in Switzerland Performance data Qo [kw] for winter operation Performance data Qo [kw] for summer operation Minimum Pressure Valve type Pressure Valve type Setpoint ambient tem- drop drop Refrigeranperature valve OROA-5 ORD-4 setting Refrigerant across the across the valve OROA-5 ORI-6 ORI-10 [barg] [ C] [bar] [bar] R 407C 12,4 R 134a 6,9 R 410A 20,3 R 404A R , , , , , , , , , , , , , ,70 0,70 0,70 1, , , , , , , , , , , , , R 407C 0, , , , R 134a 0, , , R 410A 0,21 0,28 0, R 404A 0, , , , R 507 0, , , Valve capacities are based on: evaporating temperature -20 C, condensing temperature 43 C, subcooling 6 K. Valve capacities are based on: evaporating temperature -20 C, condensing temperature 35 C, subcooling 6 K. Page 4/110 Components Catalogue Edition 2014

21 Evaporating Pressure Controllers ORIT These products are distributed primarily in Switzerland Characteristics SPORLAN Evaporating pressure controllers regulate constant pressure at the valve inlet. This is why their type designation is the same as those of condensing pressure control valves (ORI Open on Rise of Inlet Pressure). Only the lower range for the setpoint value makes it clear that an ORI valve is a condensing pressure control valve. If the load at the evaporator increases, then the valve opens. Applications * The valve prevents the evaporating pressure from falling below the setpoint value, e.g. in order to avoid ice formation at the evaporator or to limit dehumidification. * Maintaining a higher evaporating temperature e.g. in refrigerated appliances for fruits, cheese or vegetables. * Evaporating temperature limitation in water cooling units. ORI(T) valve types are available with 2 different valve seat sizes. The direct-acting evaporating pressure control valve requires the evaporating pressure to rise above the setpoint value in order to achieve the desired valve capacity. The nominal capacities are based on a pressure rise of 0,55 bar at the setting range 0/3,45 barg and a pressure rise of 0,83 bar at the setting range 2,07/6,90 barg. The control valves should be selected for the maximum desired pressure rise using the correction factors below. Selection: Oper. Nominal capacity Q 1 Pressure range N ) Pipe connection pressure EDP-No. [kw] Flare Solder [Psig] [bar] [bar] R 134a R404A R507 R 407C [SAE] [ODF] /2" /2" 0/50 0-3, ORIT-6 20, ,30 3,89 3,89 4, /2" /2" 30/100 2,0-6, /50 0-3, ORIT-10 13, ,39 9,59 9,59 12, /100 2,0-6, ) The nominal capacity is based on: evaporating temperature +5 C; Δp bar Edition 2014 Components Catalogue Page 4/111