Air Purging and Evacuation

Evacuation

1.Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit.

Confirm the "Lo" knob of the manifold valve is open. Then, run the vacuum pump.

The operation time for evacuation varies with tubing length and capacity of the pump.

[Each Room] The vacuum pump must be operated less than 0.8torr (0.015 psi) of the gage pressure.

2.When the desired vacuum is reached, close the "Lo" knob of the manifold valve and stop the vacuum pump.

Finishing the job

1.With a service valve wrench, turn the valve stem of liquid side valve counter-clockwise to fully open the valve.

2.Turn the valve stem of gas side valve counter-clockwise to fully open the valve.

3.Loosen the charge hose connected to the gas side service port slightly to release the pressure, then remove the hose.

4.Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an adjustable wrench. This process is very important to prevent leakage from the system.

5.Replace the valve caps at both gas and liquid side service valves and fasten them tight.

 

 

Indoor unit

 

Outdoor unit

 

Manifold valve

Pressure

Hi

gauge

Lo

 

 

 

Open

Close

 

Vacuum pump

This completes air purging with a vacuum pump.

The air conditioner is now ready for test running.

NOTICE

:Repeat evacuation procedure for each indoor unit.

Installation Manual 25

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Image 25
Heat Controller MMC24DA-1, MMC18DA-1 manual Evacuation, Finishing the job, Repeat evacuation procedure for each indoor unit

MMH18DA-1, MMH24DA-1, MMC24DA-1, MMC36TA-1, MMH36TA-1 specifications

The Heat Controller series, including models MMC18DA-1, MMH36TA-1, MMC36TA-1, MMC24DA-1, and MMH24DA-1, represents a robust line of heating and cooling solutions designed for efficiency, reliability, and user comfort. These models are popular choices for both residential and light commercial applications, offering a blend of advanced technology and user-friendly features.

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Installation flexibility is another key benefit. These heating and cooling systems can be installed in various configurations, making them suitable for a range of settings, from tight urban spaces to larger commercial environments.

With a commitment to quality and customer satisfaction, Heat Controller models MMC18DA-1, MMH36TA-1, MMC36TA-1, MMC24DA-1, and MMH24DA-1 cater to diverse heating and cooling needs, harnessing technology and design to enhance user comfort and efficiency in any environment.