Toshiba MMD-AP0181H Installation Manual

12
5. REFRIGERANT PIPE INSTALLATION
5-1. Work Procedure
5-2. Three Principles of Refrigerant Pipes
<Observe the three principles of refrigerant pipes>
<Three principles of refrigerant pipes>
Indoor unit
installation
Sizing
the pipes
Preliminary
installation
Flaring
Nitrogen gas blow
Brazing
Flushing
Leak test
Vacuum
suction
Leak test
Dry
Clean
Air-
tight
Causes of Problems Preventing Problems
• Moisture (in the form of
rainwater or water used during
installation, for example)
getting inside of the pipes
• Moisture from condensation
forming or seeping into the pipes
• Oxidation inside pipes during
brazing
• Dirt, dust, or foreign matter
getting inside pipes
• Poor brazing
• Poor flaring
Careful
handling
of pipes
Flushing
Vacuum
suction
Nitrogen gas blow
Careful handling of pipes
Flushing
Use of suitable materials
(copper pipes, solder, etc.)
Perform basic work
of brazing carefully
Perform basic work
of flaring carefully
Leak
Dry
Not good Not good Not good
Clean Airtight
Make sure there is no moisture
inside of the pipes
Make sure there is no dirt
inside of the pipes
Make sure the refrigerant
does not leak
Moisture
Dirt

Toshiba MMD-AP0181H Specifications

General

Brand	Toshiba
Model	MMD-AP0181H
Category	Air Conditioner
Language	English