Carrier service manual R410a DC Inverter 60Hz
Installation 109
high fan speed first, after the system operated, test following operation parameters of the system,
including indoor units and outdoor units parameters.
1.3 Installation Preparation
1.3.1 Installation tools and instruments
All the necessary tools should be available, and their models and specifications should meet the
installation and technical requirements. The instruments and meters should be tested or verified, and
their scales and accuracy should meet the requirements. The common tools for installing refrigerant
machine are listed below.
No. Name Specification/Model No. Name Specification/Model
1 Pipe cutter 15 Electronic scale
2 Steel saw 16 Stop
3 Pipe bender Spring, mechanic 17 Thermometer
4 Pipe expander
Depend on the pipe
diameter specification
18 Meter rule
5 Flaring tool
Depend on the pipe
diameter specification
19 Screw driver “-”, “+”
6 Brazing welder
Depend on the nozzle
size
Adjustable
spanner
7 Scraper 21 Resistance tester
8 File/Rasp 22 Electro probe
9 Injection tube 23 Multimeter
10
Double-ended
pressure gauge
4.0MPa 24
Pressure reducing
valve
11 Pressure gauge 1.5MPa, 4.0MPa 25 Wire pliers
12 Vacuum gauge -756mmHg 26 Clamping pliers
13 Vacuum pump At least 4 liters/second 27
Hexagon ring
spanner
14 Horizontal rule 28 Torque wrench
In addition, tools such as electric welder, cutter, A-shape ladder, electric drill, folding machine, forming
machine, nitrogen cylinder are also generally used during the installation.
1.3.2 Audit of construction drawings
Before the engineering installation, read carefully the related drawings to understand the design
intention, audit the drawings, and then work out a detailed engineering organization plan.
1. Make sure that the pipe diameters and branch pipe models meet the technical specifications.
2. Ratio of slope, drainage mode and thermal insulation of condensate water.
3. Making of air duct and air opening, and air ventilation organization.
4. Configuration specifications, model and control mode of power cables.
5. Making, total length and control mode of control cable.
The engineering construction staff should follow the construction drawing strictly during the construction.
If any change is required, such change should be approved by the design department and be
documented.
1.3.3. Construction organization plan
Construction organization plan serves as the comprehensive technical and economic documents that
guide the construction preparation and scientific construction organization. A reasonable construction
organization plan and careful implementation of it are essential to ensure smooth construction, shorten
construction period, ensure construction quality, and improve economic results.
The construction plan should be concise and focuses on key procedures, construction method, and time
coordination, space disposal of the construction around the features of the engineering, thus to ensure
smooth construction operation.
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