Refrigerant Piping Connections, Fixing and Piping

REFRIGERANT PIPING CONNECTIONS

■Fixing and Piping

•Piping must be performed by qualiﬁed personnel according to good refrigeration system practices.

•Piping materials and insulation materials must be of refrigerant quality.

•Select the pipe diameters according to the size of unit and cut the pipe to design length by using pipe cutter.

•Install the ﬂare nuts and ﬂare the end of the pipes.

•Check that no foreign bodies are inside the piping.

•Align the central of the connection pipes and tighten the ﬂare nut.

•Fix piping with pipe clamps and check that any pipe vibrations cannot be transmitted to the building structure.

NOTES

•Connect the pipe correctly.

•Do not apply the excessive torque.

•Use an appropriate bending tool to form curves and avoid over-tightening the refrigerant tubes.

•To prevent heat loss, the two lines must be insulated separately.

Low pressure

High pressure

Manifold

	Gas valve
	Liquid valve
	Pressure tap
Outdoor unit	Indoor unit
	Gas line
	Liquid line

R-410A

* Note: The expansion device is located in the outdoor unit.

■Maximum Piping Length

Unit size	18	24	30	36	48	60
(m)	30	30	30	30	30	30

The suction line must have a 2% gradient up to the compressor on horizontal sections.

Where piping lengths are unusually long and include a large number of oil traps, it may be necessary to adjust to compressor charge.

■Refrigerant charge to be added per extra meter of piping length when more than 5 meters.

Unit size			Models
	18	24	30	36	48	60

(g/m)	30	65	90	90	90	90

Prefabricated refrigerant piping is available as an acces- sory. If this is not used, piping and insulating materials employed must be compatible with this type of installa- tion.

The pre-charged outdoor unit does not require charging if piping length is 5 m or less. However, the interconnect- ing piping and the indoor unit must be pumped down before releasing R-410A refrigerant into them from the outdoor unit.

1.Remove the cap from the service valve.

2.Connect the line to a vacuum pump and pump down to 5 Pa.

3.When pump down is ﬁnished, wait 15 minutes to detect potential circuit leakage. Open service valves on the outdoor unit.

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YUHC 18-60, YUHC 07-18 specifications

York's YUHC (York University Hockey Club) has made a significant impact in the world of youth and community sports, with two notable teams: YUHC 07-18 and YUHC 18-60. Both squads have distinct characteristics, technologies, and features that contribute to their success and the development of young athletes.

The YUHC 07-18 team focuses on youth development, catering to players aged 7 to 18. This age group is crucial for skill acquisition, team dynamics, and personal growth. The coaching staff is trained in age-appropriate methodologies, promoting not only athletic excellence but also an environment where teamwork and sportsmanship thrive. The team utilizes innovative training technologies, such as video analysis software, which allows coaches to break down gameplay and provide personalized feedback to players. This technology enhances player performance, helping them to understand their strengths and areas for improvement.

In terms of equipment, YUHC 07-18 has access to state-of-the-art hockey gear, ensuring that players are both safe and competitive on the ice. Regular equipment checks and maintenance are conducted to ensure players have the best gear available, which helps in minimizing injuries and maximizing performance.

On the other hand, YUHC 18-60 serves older players, ranging from 18 to 60 years. This team emphasizes inclusivity and skill enhancement for both experienced players and those new to the sport. It combines recreational play with competitive elements, encouraging players to remain active while enjoying the benefits of team sports. The emphasis here is on community building and fostering lifelong friendships through hockey.

Both teams leverage technology to improve performance and engagement. Virtual training sessions and online workshops have become increasingly popular, especially during off-ice training periods. Players can connect with coaches and peers to enhance their skills from home, making the training schedule flexible and adaptable to personal commitments.

In summary, York's YUHC 07-18 and YUHC 18-60 represent a harmonious blend of youth development and community engagement. Through advanced training methods, top-tier equipment, and a focus on teamwork, these teams contribute positively to the landscape of local sports, creating an environment where players of all ages can thrive and build lasting relationships on and off the ice.