Superheat Control with EC3-X Controllers

The EC3-X controllers, together with the electrical control valves EX4, EX5, EX6, EX7 and EX8 take care of stable superheat control.
The pressure and the temperature of the refrigerant at the evaporator outlet are used as input signals. The controller calculates the opening of the electrical control valve [ECV] and generates the signal to drive the stepper motor. In the case of power loss, the electrical control valve is closed to protect the compressor from being flooded. To do this, a rechargeable Lead-Gel battery is built into the controller. An additional solenoid valve is no longer necessary. The refrigerant request signak us fed into the EC3-X controller through a digital input. This input is also used for temperature control and valve control.

EX4, EX5, EX6, EX7, EX8 Series Electrical Control Valves [ECV]

Since many years ago, Emerson has been producing the EX Series electrical control valves. The valves are a completely new design compared to thermal expansion valves. Produced out of high quality materials, they set new standards with respect to control stability, lifetime and corrosion resistance. The very popular family has been recently expanded to cover the rising demand for bi-low heat pumps. Today all valves [except EX8] are available in bi-low versions and allow refrigerant flow in both directions.

Driving Directions To Our Location

FROM TUAS
1. Head northwest on Jalan Ahmad Ibrahim toward Tuas West Rd 0.2 km
2. Make a U-turn at Tuas West Rd (signs for City/AYE/PIE/KJE) 83 m
3. Take the ramp onto Ayer Rajah Expy 1.9 km
4. Take the exit toward PIE/KJE 1.0 km
5. Merge onto Pan Island Expy/PIE 31.5 km
6. Take the exit toward Jalan Eunos 0.4 km
7. Turn right at Jalan Eunos 0.8 km
8. Slight left to stay on Jalan Eunos 38 m
9. Slight left at Sims Ave E 0.6 km
10. Turn right at Lorong Melayu 0.2 km
11. Turn right at Changi Rd 17 m

FROM AIRPORT
1. Head northeast on Airport Blvd 0.2 km
2. Slight right to merge onto T2 Blvd 0.2 km
3. Make a U-turn 0.4 km
4. T2 Blvd turns slightly left and becomes Airport Blvd 0.5 km
5. Continue on E Coast Pkwy 0.6 km
6. Merge onto Pan Island Expy/PIE via the ramp to TPE/SLE 9.9 km
7. Take the exit toward Jalan Eunos 0.4 km
8. Turn left at Jalan Eunos 0.6 km
9. Slight left to stay on Jalan Eunos 38 m
10. Slight left at Sims Ave E 0.6 km
11. Turn right at Lorong Melayu 0.2 km
12. Turn right at Changi Rd 17 m

FROM KEPPEL DISTRIPARK
1. Head southwest on Kampong Bahru Rd 0.3 km
2. Turn left to stay on Kampong Bahru Rd 0.5 km
3. Turn left at Keppel Rd 0.6 km
4. Take the ramp on the right to ECP 0.5 km
5. Merge onto ECP 9.9 km
6. Exit onto Still Rd S 2.1 km
7. Continue on Jalan Eunos 0.2 km
8. Turn right at Sims Ave E 0.6 km
9. Turn right at Lorong Melayu 0.2 km
10. Turn right at Changi Rd 17 m

FROM WOODLANDS
1. Head west on Woodlands Square toward S Woodlands Way 84 m
2. Slight left at S Woodlands Way 0.1 km
3. Turn left at Woodlands Avenue 5 0.3 km
4. Turn right at Woodlands Avenue 2 0.7 km
5. Take the ramp to SLE/CTE/TPE 0.5 km
6. Merge onto Seletar Expy/SLE 8.7 km
7. Take the exit on the right toward City 0.9 km
8. Merge onto Central ExpyPartial toll road6.7 km
9. Take the exit toward PIE 0.6 km
10. Merge onto Pan Island Expy/PIE 4.9 km
11. Take the exit toward Jalan Eunos 0.4 km
12. Turn right at Jalan Eunos 0.8 km
13. Slight left to stay on Jalan Eunos 38 m
14. Slight left at Sims Ave E 0.6 km
15. Turn right at Lorong Melayu 0.2 km
16. Turn right at Changi Rd 17 m

Control Valve that replaces a solenoid valve and a thermal expansion valve

A refrigeration system with electronic superheat control requires less mechanical components, because the electrical control valve combines the function of the expansion valve and the solenoid valve. The installation is much much easier because less mechanical components are used.

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EX Series Heat Reclaim Control

R22 applications.

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39kW --- EX7 heat reclaim control and EXD-U.. universal controller.
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EX series Condensing Pressure and Liquid Regulator

R22, applications.

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43kW --- EX6 Liquid mass flow control and EXD-U.. universal controller.
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463kW --- EX8 Liquid mass flow control and EXD-U.. universal controller.