Structure; Outdoor Unit And Refrigerating System; Tools And Instruments Required For Installation - York JVOHQ Series Installation & Maintenance Manual

2. Structure

2.1 Outdoor Unit and Refrigerating System

Refer to the technical manual for the structur diagram and system cycle diagram.

2.2 Tools and Instruments Required for Installation

Check that the designed pressure of the machine is 4.15MPa.
To avoid mixing of refrigerant with cooling oil or other refrigerants in the system, the size of the
connecting device is changed.
Before installation, it is necessary to have the following tools:
No. Tool
1 Handsaw
2 Screwdriver
3 Vacuum pump
4 Charging hose
5 Megohmmeter
NOTE:
While touching to refrigerant directly, use special installation tools and instruments for the new refrigerant (R410A).
The pressure of the new refrigerant R410A is 1.4 times that of the conventional refrigerant. Water,
oxide, grease and other impurities can easily affect the performance of the refrigerant. Ensure that
the moisture, dust, other refrigerants or refrigerating oil in the refrigerating system are removed.
Therefore, if you do not use the specified material and the tool, it may cause an explosion, injury,
refrigerant leak, electrical failure or fire.
No. Tool No.
6 Pipe Bender
7 Vise
8 Pipe cutter
9 Brazing tools
10 Hex wrench
!
Tool
11 Wrench
12 Charging Cylinder
13 Manifold valve
14 Wire cutter
15 Leakage detector
DANGER
4
No. Tool
16 Leveller
17 Cutter for Wires
18 Hoist (for indoor unit)
19 Ammeter
20 Voltage meter