Evacuate and Dehydrate the System | Toshiba RAV-SP240AT2-UL specs

Outdoor Unit

Installation Manual

8 EVACUATE AND DEHYDRATE THE SYSTEM

CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Never use the system compressor as a vacuum pump.

Refrigerant tubes and indoor heat exchanger should be evacuated using the recommended deep vacuum method of 500 microns. The alternate triple evacuation method may be used if the procedure outlined below is followed. Always break a vacuum with dry nitrogen.

SYSTEM VACUUM AND CHARGE

Using Vacuum Pump

1.Completely tighten flare nuts A, B, C, D, connect manifold gage charge hose to a charge port of the low side service valve.

Service Valve

Outdoor Unit		Refrigerant	Indoor Unit
Outdoor Unit	A	Low Side	C
	A	Low Side	C


	B	High Side	D
Service Valve

2.Connect charge hose to vacuum pump.

3.Fully open the low side of manifold gage.

Manifold

Manifold Gage

500 microns

Low side valve

High side valve Charge hose

Charge hose

Vacuum pump

Low side valve

4.Start vacuum pump.

5.Evacuate using either deep vacuum or triple evacuation method.

6.After evacuation is complete, fully close the low side of manifold gage and stop operation of vacuum pump.

Deep Vacuum Method

The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth. The deep vacuum method is the most positive way of assuring a system is free of air and liquid water.

Deep Vacuum Graph

	5000
	4500
	4000
	3500							LEAK IN
	3500							SYSTEM
MICRONS								SYSTEM
	3000
	2500
	2000
	1500					VACUUM TIGHT
						VACUUM TIGHT

							TOO WET
	1000
	500						TIGHT DRY
	500						SYSTEM
							SYSTEM
	0	1	2	3	4	5	6	7
			MINUTES

Triple Evacuation Method

The triple evacuation method should only be used when vacuum pump is only capable of pumping down to 28 in. of mercury vacuum and system does not contain any liquid water.

Refer to “Triple Evacuation Method chart” and proceed as follows:

1.Pump system down to 28 in. of mercury and allow pump to continue operating for an additional 15 minutes.

2.Close service valves and shut off vacuum pump.

3.Connect a nitrogen cylinder and regulator to system and open until system pressure is 2 psig.

4.Close service valve and allow system to stand for 1 hr. During this time, dry nitrogen will be able to diffuse throughout the system absorbing moisture.

5.Repeat this procedure as indicated in the chart. System will then be free of any cotaminants and water vapor.

17-EN

– 17 –

RAV-SP240AT2-UL specifications

The Toshiba RAV-SP240AT2-UL is a state-of-the-art air conditioning unit that showcases Toshiba's commitment to energy efficiency, innovation, and comfort. Designed primarily for commercial use, it stands out as an ideal solution for businesses that require a reliable and effective climate control system.

One of the main features of the RAV-SP240AT2-UL is its powerful 24,000 BTU cooling capacity, which allows it to effectively cool larger spaces. This unit functions efficiently even in extreme weather conditions, providing optimal performance regardless of outside temperatures. The RAV-SP240AT2-UL also boasts a heating capacity, making it a versatile option for year-round climate control.

Energy efficiency is a significant characteristic of this model, as it comes equipped with an advanced inverter technology. This technology allows the unit to adjust its cooling and heating output according to the specific requirements of the space. As a result, users can expect lower energy consumption, reduced electricity bills, and a lower carbon footprint. The RAV-SP240AT2-UL has a high Energy Efficiency Ratio (EER) rating that further underscores its energy-saving capabilities.

In terms of installation, the RAV-SP240AT2-UL is designed for easy integration. Its compact size and lightweight design make it suitable for various commercial settings, including offices, retail spaces, and restaurants. The unit can be installed in both horizontal and vertical configurations, providing flexibility to meet the unique layout of any building.

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Overall, the Toshiba RAV-SP240AT2-UL is a robust and efficient air conditioning solution tailored for commercial spaces. With its blend of power, energy efficiency, and advanced technology, it ensures an optimal climate control experience while promoting sustainability.