Energy Tech Laboratories DSH installation instructions START-UP and Operation, Refrigerant Charges

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FORM 145.32-IOM1 (908)

START-UP AND OPERATION

Prior to starting unit for the first time, turn the thermostat system switch to OFF - or raise the cooling setpoint to the highest temperature, to prevent the unit from starting. Close the electrical disconnect switch. This will energize the compressor crankcase heater(s). WAIT A MINIMUM OF FOUR HOURS BEFORE STARTING THE SYSTEM. This period will allow the crankcase heater to vaporize any liquid refrigerant in the compressor crankcase.

Start unit and check rotation of fans and compressors.

Scroll compressors will only compress in one rotational direction. Three phase compressors will rotate in either direction depending upon phasing of the power. Since there is a 50-50 chance of connecting power in such a way as to cause rotation in the reverse direction, it is important to ensure proper rotation direction is achieved when the system is installed and operated.

Verification of proper direction is made by observing that suction pressure drops and discharge pressure rises when the compressor is energized. Reverse rota- tion also results in an elevated sound level as well as substantially reduced current draw.

If opposite rotation is needed, disconnect and reverse any two leads of the three phase supply. Reconnect power and observe for correct rotation.

Observe unit operation and check for unusual noise or vibration.

REFRIGERANT CHARGES

Ref. Charge

2 TON

3 TON

4 TON

5 TON

No. of Circuits

1

1

1

1

Per Circuit (lb)

7.625

8.125

11.188

10.938

The Air Conditioning section of this equipment is charged with R-410A; a hi- pressure refrigerant. Only qualified techni- cians, using appropriately pressure-rated test instruments, should perform trouble- shooting or service on this equipment.

PRESSURE SWITCH SETTINGS

 

 

 

 

 

ALL MODELS

 

 

High

Low

Cut Out (PSIG)

600

55

Cut In (PSIG)

450

75

There is no negative impacts on durability caused by operating three phase Scroll compressors in the re- versed direction for a short period of time (less than one hour). However, after several minutes of operation the compressors internal protector will trip.

RECCOMENEDED REFRIGERANT LINE SIZES

UNIT SIZE

LESS THAN 60 LINEAR FEET

60 - 150 LINEAR FEET

LIQUID LINE

SUCTION LINE

LIQUID LINE

SUCTION LINE

 

2 TON

5/16

5/8

3/8

3/4

3 TON

3/8

3/4

3/8

7/8

4 TON

3/8

7/8

1/2

1-1/8

5 TON

3/8

1-1/8

1/2

1-1/8

8 TON

2 X 3/8

2 X 7/8

2 X 3/8

2 X 1-1/8

10 TON

2 X 3/8

2 X 1-1/8

2 X 1/2

2 X 1-1/8

12 TON

2 X 1/2

2 X 1-1/8

2 X 1/2

2 X 1-3/8

15 TON

2 X 1/2

2 X 1-1/8

2 X 5/8

2 X 1-3/8

NOTES: - Maximum Suction Lift 60 FT

-Maximum Liquid Line Rise 40 FT (measured from condensing unit level).

-Liquid Line Solenoid Valve required on systems over 100 linear feet.

-Suction Accumulator(s) required on systems over 125 linear feet.

Johnson Controls

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Contents Model DSH Ceiling Mounted Ducted R-410A Read Before Proceeding General Safety GuidelinesTable of Contents General Information Typical Installation Drawing PRE-INSTALLATION Inspection of Equipment InstallationRigging Unit Mounting Separation of Units Interconnecting Refrigerant Tubing Split InstallationDimensional Data Dimensional Data Louver Sizing Guidelines DuctworkElectrical Wiring Packaged UnitSplit System Standard Motors Model FAN Performance DataMotor and Pulley Data Blower Speed AdjustmentPressure Switch Settings START-UP and OperationRefrigerant Charges Typical Schematic Blowers Maintenance / ServiceFilters Evaporator and Condenser CoilsComfort Alert Diagnostics Interpreting the Diagnostic LedsLED Description Status LED Troubleshooting Information Low line voltage to compressor Installation Verification Exclusions Limited WarrantyCompressor Five Year Limited Warranty Labor and Cost not Covered410A Quick Reference Guide Form 145.32-IOM1

DSH specifications

Energy Tech Laboratories DSH is a pioneering organization at the forefront of energy technology innovation. With a commitment to sustainability and efficiency, DSH focuses on developing cutting-edge solutions that address modern energy challenges. The laboratory excels in research and development, primarily emphasizing renewable energy, energy storage systems, and smart grid technologies.

One of the main features of Energy Tech Laboratories DSH is its state-of-the-art research facilities that house advanced equipment and tools for experimentation and analysis. The laboratories are equipped with simulation tools that facilitate the modeling of complex energy systems, enabling researchers to assess the performance of new technologies under various conditions. This capability is vital for optimizing energy solutions before they are deployed in real-world applications.

DSH has developed several key technologies that exemplify its innovative spirit. Solar photovoltaic (PV) integration is one of the flagship projects, focusing on enhancing the efficiency of solar panels through novel materials and designs. The laboratory continuously investigates new photovoltaic materials that can significantly increase sunlight conversion rates, reducing the overall cost of solar energy.

In addition to solar technologies, DSH is a pioneer in the field of energy storage. The laboratory works on advanced battery technologies, including lithium-sulfur and solid-state batteries, which promise higher energy densities and longer life cycles compared to conventional lithium-ion batteries. These enhancements are vital for the effective storage of renewable energy, allowing for smoother integration into the power grid.

Moreover, Energy Tech Laboratories DSH is heavily invested in smart grid technologies, which enhance the efficiency of electricity distribution through real-time data analysis and improved grid management. By deploying advanced metering infrastructure and predictive analytics, DSH aims to create resilient energy systems that can respond dynamically to consumer demand and integrate various energy sources seamlessly.

The laboratory's dedication to collaboration with industry partners, government agencies, and academic institutions ensures that its research is translated into practical solutions. This synergy fosters innovation and accelerates the adoption of sustainable technologies.

In conclusion, Energy Tech Laboratories DSH stands as a pillar of innovation in the energy sector, exemplifying a strong commitment to developing technologies that support a sustainable future. Its focus on renewable energy, energy storage, and smart grid solutions positions it as a key player in the ongoing transition towards a cleaner and more efficient energy landscape.
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