Alco Controls
Alco Controls Alco Controls
Electrical Control Valves Series EX4, EX5, EX6, EX7, EX8 0 Features • Multifunction as expansion valve, hot gas bypass, suction gas throttling, head pressure, liquid level actuator etc • Fully hermetic design (no thread joints between valve body and motor compartment) • Applicable to all common refrigerants (HCFC, HFC) and for subcritical CO2 applications • Stepper motor driven • Short opening and closing time • Very fast full stroke time • High resolution and excellent repeatability • Positive shut-off function to eliminate use of additional solenoid valve • Bi-flow versions for heat pump applications • High linear flow capacity • Extremely wide capacity range (10 … 100%) • Continuous modulation of mass flow, no stress (liquid hammering) in the refrigeration circuit • Direct coupling of motor and valve for high reliability (no gear mechanism) • Ceramic slide and port for highly accurate flow and minimal wear • Europe patent No. 0743476, USA patent No. 573550 , Japan patent No. 28225789 • Balanced force design • Corrosion resistant stainless steel body and stainless steel connections • PS: EX4/EX5/EX6/EX7: 45 bar, EX8: 35 bar • TS: Uniflow: -50 to +100°C, Biflow: -40 to +80°C Selection Chart Capacities see following pages Type Part No. Flow Pattern Capacity Inlet connection Outlet connection Electrical connection EX4-I2 800 6 5 3/8“ ODF 5/8“ ODF EX4-M2 800 6 6 0mm ODF 6mm ODF EX5-U21 800 618 5/8“(16mm) ODF 7/8“ (22mm) ODF EX6-I21 800 620 7/8“ ODF 1-1/8“ ODF M12 Plug EX6-M21 800 621 Uni-flow 22mm ODF 28 mm ODF EX7-I21 800 624 1- 1/8“ ODF 1- 3/8“ ODF EX7-M2 800 625 0 ... 00% 28mm ODF 35mm ODF EX8-M2 80 964 42mm ODF, rotalock 42mm ODF, rotalock DIN Plug EX8-U21 801 970 1- 3/8“ (35mm) ODF 1- 3/8“ (35mm) ODF DIN Plug EX4-U31 800 617 5/8“(16mm) ODF 5/8“(16mm) ODF EX5-U31 800 619 Bi-flow 5/8“(16mm) ODF 7/8“ (22mm) ODF EX6-I31 800 622 (Heat Pump) 1- 1/8“ ODF 1- 1/8“ ODF M12 Plug EX6-M3 800 623 28mm ODF 28mm ODF EX7-U31 800 626 1- 3/8“ (35mm) ODF 1- 3/8“ (35mm) ODF Note 1: EX4/EX5/EX6/EX7 are delivered without cable/connector assembly. The cable/connector assembly can be ordered separately. Note 2: EX8 are delivered with electrical plug according to DIN 43650. EX7 Cable and Connector Assemblies for EX4, EX5, EX6 and EX7 Type Part No. Temperature Range Length Connector type to valve Connector type to driver or controller Illustration EX5-N 5 804 650 .5 m EX5-N30 804 651 -25 … +80°C 3.0 m Loose wires for EXD-S / -U / -C and EX5-N60 804 652 6.0 m EC3-X32/33 EX5-L60 804 655 -50 …+80°C 6.0 m M12, 4 pins EX5-C 5 EX5-C30 EX5-C60 804 656 804 657 804 658 -25 … +80°C .5 m 3.0 m 6.0 m Phoenix type, crimp connection for EC3 controllers EX5 EX8 EX4 EX6 A2.5. /0706/E
Capacity Data Application Expansion Valve and Liquid Injection Valve - Nominal Capacity (kW) Valve Type R 407C R 22 R 134a R 404A R 410A R 23 * R 124 * R 744 EX4 2 .. 7.4 2 .. 6.5 .. 2.8 .. .5 2 .. 9.3 2 .. 7.8 .. 9.2 3 .. 33.5 EX5 5 .. 53 5 .. 50 4 .. 39 4 .. 35 6 .. 58 5 .. 54 3 .. 28 0 .. 02 EX6 5 .. 26 5 .. 20 0 .. 93 0 .. 84 5 .. 40 3 .. 30 7 .. 67 24 .. 244 EX7 35 .. 347 35 .. 330 25 .. 255 25 .. 230 40 .. 385 - - 70 .. 670 EX8 00 .. 925 90 .. 880 70 .. 680 60 .. 6 3 00 .. 027 - - 80 .. 789 *) Biflow versions are not released for R 124 and R 23 Capacity for biflow versions identical in both flow directions. Guideline for selection of electrical control valves as expansion valves A2.5. /0706/E The nominal capacity (Qn) is based on the following conditions: Refrigerant Evaporating temperature Condensing temperature Subcooling R 407C +4°C (dew point) +38°C bubble point / +43°C dew point K R 22, R 34a, R 404A, R 4 0A +4°C +38°C K R 24 +20°C +80°C K R 23 -60°C -25°C K R 744 -40°C -10°C K ALCO Selection Tool For easy and quick selection of Electrical Control Valves an Excel based selection tool can be downloaded from the Internet at www.ecopeland.com, or use the quick selection tables on the following pages. The following guideline should be taken into consideration in order to obtain full advantages of the control valves: - Published capacities are maximum and there are no reserve capacities - Larger size of valve leads to shorter pull down periodandshortertraveltimei.e.fasterresponse. For example, EX7 has maximum 3.2 seconds travel time. The valve has approximately .6 seconds travel time at 50% capacity operation. Example: System with R407C having two different operating conditions: A) 110 kW capacity at +4°C/+50°C with two stages compressor at 50% / 00% capacity B) 137 kW capacity at +4°C/+30°C with two stages compressor at 50% / 00% capacity EX6 with 26 kW covers condition A, however is not sufficient to cover condition B. It is recommended to select larger valve i. e. EX7 with 337 kW at condition A and 293 kW at condition B. Condition A: Full load ratio = 0 / 337 = 33% Partial load ratio = ( Condition B: 0/2) / 337 = 6% Full load ratio = 37 / 293 = 47% Partial load ratio = ( 37/2) / 293 = 23% The capacity ratios of system to valve are in all conditions higher than use EX7 rather than EX6. 0%. It is recommended to
- Page 1 and 2: Alco Controls Components for the Re
- Page 3 and 4: A2.5. /0706/E Electrical Control Va
- Page 5 and 6: Fan Speed, Temperature and Pressure
- Page 7 and 8: A2.5. /0706/E Electrical Control Va
- Page 9 and 10: Electrical Control Valves Series EX
- Page 11: Liquid temperature Correction Facto
- Page 15 and 16: Application Expansion Valve and Liq
- Page 17 and 18: Application Expansion Valve and Liq
- Page 19 and 20: Application Expansion Valve and Liq
- Page 21 and 22: Application Hot Gas Bypass - Nomina
- Page 23 and 24: Application Suction Pressure Regula
- Page 25 and 26: Application Condensing Pressure Reg
- Page 27 and 28: Application hot gas flow such as he
- Page 29 and 30: Application hot gas flow such as he
- Page 31 and 32: A2.5.1/0706/E Electronic Controller
- Page 33 and 34: Electronic Controllers with Network
- Page 35 and 36: Selection Table Electronic Controll
- Page 37 and 38: Universal Driver Modules Series EXD
- Page 39 and 40: Accessories Type Part No. Terminal
- Page 41 and 42: Coldroom Controller Series EC3 Temp
- Page 43 and 44: Block Diagram EC3-33x Coldroom Cont
- Page 45 and 46: Selection table TCP/IP LON Descript
- Page 47 and 48: Rack and Condenser Controllers Seri
- Page 49 and 50: Block Diagrams EC3-81x Dual Ciruit
- Page 51 and 52: Network Accessories Description Cab
- Page 53 and 54: Pressure Transmitter Series PT4 A2.
- Page 55 and 56: Electronic Fan Speed Power Module F
- Page 57 and 58: A2.5.1/0706/E Thermo ® -Expansion
- Page 59 and 60: A2.5.1/0706/E Example Cooling capac
- Page 61 and 62: TIS(E) Valve bodies - solder type m
Electrical Control Valves Series EX4, EX5, EX6, EX7, EX8<br />
0<br />
Features<br />
• Multifunction as expansion valve, hot gas bypass,<br />
suction gas throttling, head pressure, liquid level<br />
actuator etc<br />
• Fully hermetic design (no thread joints between<br />
valve body and motor compartment)<br />
• Applicable to all common refrigerants (HCFC,<br />
HFC) and for subcritical CO2 applications<br />
• Stepper motor driven<br />
• Short opening and closing time<br />
• Very fast full stroke time<br />
• High resolution and excellent repeatability<br />
• Positive shut-off function to eliminate use of<br />
additional solenoid valve<br />
• Bi-flow versions for heat pump applications<br />
• High linear flow capacity<br />
• Extremely wide capacity range (10 … 100%)<br />
• Continuous modulation of mass flow, no stress<br />
(liquid hammering) in the refrigeration circuit<br />
• Direct coupling of motor and valve for high<br />
reliability (no gear mechanism)<br />
• Ceramic slide and port for highly accurate flow<br />
and minimal wear<br />
• Europe patent No. 0743476, USA patent<br />
No. 573550 , Japan patent No. 28225789<br />
• Balanced force design<br />
• Corrosion resistant stainless steel body and<br />
stainless steel connections<br />
• PS: EX4/EX5/EX6/EX7: 45 bar, EX8: 35 bar<br />
• TS: Uniflow: -50 to +100°C, Biflow: -40 to +80°C<br />
Selection Chart Capacities see following pages<br />
Type Part No. Flow Pattern Capacity Inlet connection Outlet connection Electrical connection<br />
EX4-I2 800 6 5 3/8“ ODF 5/8“ ODF<br />
EX4-M2 800 6 6 0mm ODF 6mm ODF<br />
EX5-U21 800 618 5/8“(16mm) ODF 7/8“ (22mm) ODF<br />
EX6-I21 800 620 7/8“ ODF 1-1/8“ ODF M12 Plug<br />
EX6-M21 800 621 Uni-flow 22mm ODF 28 mm ODF<br />
EX7-I21 800 624 1- 1/8“ ODF 1- 3/8“ ODF<br />
EX7-M2 800 625 0 ... 00% 28mm ODF 35mm ODF<br />
EX8-M2 80 964 42mm ODF, rotalock 42mm ODF, rotalock DIN Plug<br />
EX8-U21 801 970 1- 3/8“ (35mm) ODF 1- 3/8“ (35mm) ODF DIN Plug<br />
EX4-U31 800 617 5/8“(16mm) ODF 5/8“(16mm) ODF<br />
EX5-U31 800 619 Bi-flow 5/8“(16mm) ODF 7/8“ (22mm) ODF<br />
EX6-I31 800 622 (Heat Pump) 1- 1/8“ ODF 1- 1/8“ ODF M12 Plug<br />
EX6-M3 800 623 28mm ODF 28mm ODF<br />
EX7-U31 800 626 1- 3/8“ (35mm) ODF 1- 3/8“ (35mm) ODF<br />
Note 1: EX4/EX5/EX6/EX7 are delivered without cable/connector assembly. The cable/connector assembly can be ordered separately.<br />
Note 2: EX8 are delivered with electrical plug according to DIN 43650.<br />
EX7<br />
Cable and Connector Assemblies for EX4, EX5, EX6 and EX7<br />
Type Part No. Temperature Range Length Connector type to valve Connector type to driver or controller Illustration<br />
EX5-N 5 804 650 .5 m<br />
EX5-N30 804 651 -25 … +80°C 3.0 m Loose wires for EXD-S / -U / -C and<br />
EX5-N60 804 652 6.0 m EC3-X32/33<br />
EX5-L60 804 655 -50 …+80°C 6.0 m M12, 4 pins<br />
EX5-C 5<br />
EX5-C30<br />
EX5-C60<br />
804 656<br />
804 657<br />
804 658<br />
-25 … +80°C<br />
.5 m<br />
3.0 m<br />
6.0 m<br />
Phoenix type, crimp connection<br />
for EC3 controllers<br />
EX5<br />
EX8<br />
EX4<br />
EX6<br />
A2.5. /0706/E
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