Basic Functions of the Service Valves

The basic functions of the service valves are given in Table 8 below.

Table 8

Action

Narrow Tube Service

Wide Tube Service

Valve (2-Way)

Valve (3-Way)

 

 

CLOSED

O-ring

Valve cap

 

 

 

Stem

Shipping

Fully OPEN

Operating and test running

the air conditioner

 

Fully OPEN

Measuring pressure

*

and gas charging

 

 

CLOSED

Air purging with

*

a vacuum pump

 

Hose with push-pin

CAUTION

Close

*The service port on the wide tube ser- vice valve uses a Schrader core valve to access the refrigerant system.

Therefore, be sure to use a hose con- nector which has a push-pin inside. (Fig. 60a)

Service valve

When opening or closing the service valve stem,

Open

use the hex wrench. Be sure to fully seat the wrench before turning the valve.

Hex wrench

Fig. 60b

PUSH

NOTE

External diameter of service port R410A: 5/16"

Fig. 60a

Pump Down

Pump down means collecting all refrigerant gas in the system back into the outdoor unit without losing any of the gas. Pump down is used when the unit is to be moved or before servicing the refrigerant circuit.

Pump Down Procedure

Be sure to carry out pump down with the unit in cooling mode.

(1)Connect the Lo side charging hose of the manifold valve to the service port on the wide tube service valve.

(2)Using a hex wrench, turn the narrow tube service valve clockwise all the way to close the service valve. (Be sure to confirm that the wide tube service valve is fully open.)

(3)Press the operation button and start cooling oper- ation.

(4)When the low pressure gauge reading falls to 14.2 to 7.1 psi (1 to 0.5 kg/cm2), fully close the wide tube valve stem. Then quickly stop the unit.

(5)Disconnect all gauges and hoses, and replace the valve caps as they were before.

26

Page 118
Image 118
Panasonic CS-KS24NKU  Basic Functions of the Service Valves,  Pump Down, When opening or closing the service valve stem

CU-KS24NKUA, CS-KS24NKU, CU-KS24NKU specifications

The Panasonic CU-KS24NKUA, CU-KS24NKU, and CS-KS24NKU are a part of the company’s advanced air conditioning lineup, known for their efficient performance and user-friendly features. Designed to provide optimal cooling while ensuring energy efficiency, these models cater to both residential and commercial spaces, making them an ideal choice for various settings.

One of the standout features of the Panasonic CU-KS24NKUA and its counterparts is their inverter technology. This innovative approach allows the air conditioning units to adjust their cooling capacity based on the room's temperature, thus ensuring that they operate at peak efficiency. By minimizing energy consumption during low demand, the units not only lower electricity bills but also reduce environmental impact.

The CU-KS24NKU series is equipped with a powerful compressor that delivers high cooling performance, capable of rapidly cooling spaces even in extreme heat conditions. Additionally, with a robust SEER (Seasonal Energy Efficiency Ratio) rating, these models rank among the top in energy savings, making them suitable for energy-conscious consumers.

Continuous airflow is vital for maintaining a comfortable indoor environment, and the CS-KS24NKU includes features that enhance air circulation. Utilizing a multi-directional airflow system, these units ensure that cool air is distributed evenly throughout the room, minimizing hot spots and maximizing comfort.

Another significant characteristic of the Panasonic air conditioners is their silent operation. Designed with low noise levels in mind, these units ensure that cooling does not come at the expense of peace and quiet, making them perfect for bedrooms or offices where a tranquil environment is essential.

In addition to performance, the Panasonic CU-KS24NKUA, CU-KS24NKU, and CS-KS24NKU are also equipped with comprehensive filtration systems. These filters capture dust, allergens, and pollutants, promoting better air quality within indoor spaces. This is particularly beneficial for individuals with allergies or respiratory concerns.

Remote control and smart capabilities are also integral features, allowing users to operate and schedule their air conditioner from anywhere within the home. This convenience adds a layer of flexibility to managing indoor climates, especially in today's fast-paced world.

In summary, the Panasonic CU-KS24NKUA, CU-KS24NKU, and CS-KS24NKU air conditioning units represent a perfect blend of advanced technology, energy efficiency, and user comfort. Their inverter technology, effective air distribution, quiet operation, and enhanced air filtration make them a valuable addition for those seeking reliable climate control while prioritizing sustainability and comfort.