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Setup/Installation/Operation of an Environmental Control Unit (ECU) U-09F01.

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Presentation on theme: "Setup/Installation/Operation of an Environmental Control Unit (ECU) U-09F01."— Presentation transcript:

1 Setup/Installation/Operation of an Environmental Control Unit (ECU) U-09F01

2 Overview Characteristics Set-Up and Installation Operations 2

3 3

4 4 Characteristics of the ECU Design Features The ECU is a package system designed to operate in a portable field capacity Ducting Built-in Control box Remote controller

5 5 Characteristics of the ECU Specifications of the ¾ Ton ECU (B0074) Provides 9,000 BTU cooling capacity Provides 3,400 BTU heating capacity The ECU operates using 120VAC, 1 Phase, 50/60Hz power Dimensions are 16.00” High, 23.75” Wide, 26.67” Deep and weighs 187 pounds Refrigerant Charge: 1 lbs 14 oz of R-22

6 6 Characteristics of the ECU Specifications of the 1.5 Ton ECU (B0003) Provides 18,000 BTU cooling capacity Provides 7,000 or 14,000 BTU heating capacity The ECU operates using 208VAC, 3 Phase, 50/60Hz power Refrigerant Charge: 3 lbs 2 oz of R-22 Manufacturer- Nordic Air, INC., Geneva, Ohio

7 7 Characteristics of the ECU Specifications of the 3 Ton ECU (B0014) Provides 36,000 BTU cooling capacity Provides 31,000 BTU heating capacity The ECU operates using 208VAC, 3 Phase, 50/60Hz power Refrigerant Charge: 5 lbs 9 oz of R-22 Manufacturer- Nordic Air, INC., Geneva, Ohio

8 8 Characteristics of the ECU Specifications of the 5 Ton ECU (B0008) Provides 60,000 BTU cooling capacity Provides 37,000 BTU heating capacity The ECU operates using 208VAC, 3 Phase, 50/60Hz power Refrigerant Charge: 9 lbs 8 oz of R-22 Manufacturer- Nordic Air, INC., Geneva, Ohio

9 9 Characteristics of the ECU Specifications of the Integrated Trailer-ECU- Generator (ITEG) (B0018) The Integrated Trailer-ECU-Generator (ITEG) is an integrated HMMWV towable ECU generator combo

10 10 Characteristics of the ECU Specifications of the 10 Ton ECU (B0010) Provides 120,000 BTU cooling capacity Provides 47,000 BTU heating capacity The ECU operates using 208VAC, 3 Phase, 50/60Hz power supplied by the generator Refrigerant Charge: 10 lbs of R-22 Manufacturer- Nordic Air, INC., Geneva, Ohio

11 11 Characteristics of the ECU Specifications of the Generator Provides 22kW of electrical power The generator is equipped with 208VAC, 3 Phase, 60Hz, 60A power supply system and two 120V, 3 phase, 15A utility outputs

12 12 Characteristics of the ECU Electrical Components Circuit Breakers The ECUs is wired with two circuit breakers, main and control breakers, that are opened when it’s rated current flow is exceeded

13 13 Electrical Components Phase Monitor This component ensures that all three phases of power are entering in the correct order and uninterrupted Characteristics of the ECU

14 14 Characteristics of the ECU Electrical Components Selector Switch 1 Used to select the operating mode needed for current conditions

15 15 Electrical Components Selector Switch 2 The remote gives the user the capability to control the desired temperature from within the confined space Characteristics of the ECU

16 16 Characteristics of the ECU Electrical Components Thermostat A control device that responds to the surrounding air temperatures of the confined space

17 17 Electrical Components Condenser Fan Cycling Switch Cycles the condenser motor to low speed to allow for low ambient temperature operation Characteristics of the ECU

18 18 Characteristics of the ECU Electrical Components Time Delay Relay 1 Prevents compressor from short cycling Compressor will not turn back on for two minutes

19 19 Electrical Components Time Delay Relay 2 Allows the ECU to start and pressurize in low ambient conditions Characteristics of the ECU

20 20 Electrical Components Fan Motors Are used to rotate the evaporator and condenser fans blades at the specified RPM Characteristics of the ECU

21 21 Characteristics of the ECU Electrical Components Main Heating Elements When electrical current is fed into the heating elements it meets resistance and heat is created

22 22 Mechanical Components Compressor The type of compressor used in the ECUs is a scroll type compressor Characteristics of the ECU

23 23 Mechanical Components Discharge Service Port Used to add or remove refrigerant Characteristics of the ECU

24 24 Mechanical Components Condenser Coil Turns high pressure, high temperature vapor into a high pressure high Characteristics of the ECU

25 25 Filter Drier Filters the impurities and absorbs moisture from liquid refrigerant. Sight Glass Used to monitor the refrigerant charge. Thermal Expansion Valve Serves two purposes, it separates the high side from the low side and it also meters the flow of refrigerant to the evaporator. Characteristics of the ECU

26 26 Mechanical Components Evaporator Turns low temperature, low pressure liquid refrigerant into low pressure, low temperature super heated vapor Characteristics of the ECU

27 27 Protection Features High Pressure Cutout Switch Opens the circuit to the compressor relay if the pressure rises above a predetermined threshold Characteristics of the ECU

28 28 Protection Features Low Pressure Cutout Switch Opens the circuit to the compressor relay if the pressure falls below a predetermined threshold Characteristics of the ECU

29 29 Pressure Relief Valve Will discharge refrigerant if the internal pressures rises above a certain threshold Heater Safety System Two high limit trip switches set to break if electric heater compartment temperature rises above 140°F Characteristics of the ECU

30 30

31 UNCLASSIFIED31 Unit Setup The ECU should be set in a level location, not be on an incline greater than 10° in any direction The ECU is should be set in a location relative to the shelter to allow the ducts to lay straight Set-up and Installation of the ECU

32 32 Gear Be sure to remove all gear stowed in the storage compartment that is located in the condenser section The storage compartment is designed to accommodate Two 10’ flexible ducts (16” compressed) Remote with 50’ cord Technical Manual 50’ Power Cord Set-up and Installation of the ECU Replace and secure storage compartment cover

33 33 Duct Installation Remove and roll up canvas covers Loosen straps and expand flexible duct Attach one end of the duct to the ECU Route the free end of the duct to the shelter Set-up and Installation of the ECU

34 34 Cable Installation First, attach the power cable to the ECU Then route the other end to the 208VAC 50/60Hz power source and attach it according to the color code in the wiring diagram Attach the remote to the ECU and route it into the shelter Set-up and Installation of the ECU

35 35 Other Preparations Be sure that the condensate drain is free of restrictions Remove the protective canvass covers that are located over the evaporator and condenser coils and condenser fan discharge Set-up and Installation of the ECU

36 36

37 37 Three operating modes Fan Cool Heat The thermostat controls the operation of the unit This controls the cooling process of the ECU Operating the ECU

38 38 Operating Modes Fan EVAPORATOR FAN STARTS Cool EVAPORATOR Heat EVAPORATOR FAN STARTS Operating the ECU

39 39 Thermostat Bypass The bypass circuit allows the unit to run continuously even after the thermostat set point has been reached Operating the ECU

40 40 Starting the Unit Before connecting any power source do a 360° Connect the external power supply to power receptacle Place the circuit breakers in the ON position Select the operating mode Fan Cool Heat Adjust thermostat to desired setting Operating the ECU

41 41 Shutdown Procedures Place the Selector Switch in the OFF position Ensure the fan and compressor stop Operating the ECU Emergency Shutdown Procedures Place the main circuit breaker in the OFF position Disconnect the power cord from the main power source to interrupt incoming power Disconnect the power from the ECU

42 42

43 Summary Characteristics Set-Up and Installation Operations 43

44 Setup/Installation/Operation of an Environmental Control Unit (ECU) U-09F01


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