Note: Additional refrigerant volume of divergent pipe is 0.1kg per item (Consider the liquid side of divergent pipe only).
4.8 Leak detection
Use soap water or leak detector to check every joint whether leaks or not.
Note: A is low pressure side stop valve.
B is high pressure side stop valve.
C and D are connecting pipes interface of indoor and outdoor units.
4.9 Heat Insulation
Do the heat insulation to the pipes of air side and liquid side separately. The temperature of the pipes of air
side and liquid side when cooling, for avoiding condensation please do the heat insulation fully.
The air side pipe should use closed cell foamed insulation material, which the fire-retardant is B1 grade
and the heat resistance over 120°C.
When the external diameter of copper pipe≤Φ12.7mm, the thickness of the insulating layer at least more
than 15mm; When the external diameter of copper pipe≥Φ15.9mm, the thickness of the insulating layer at
least more than 20mm.
Please use attached heat-insulating materials to do the heat insulation without clearance for the
connecting parts of the indoor unit pipes.
5. Electric Wiring Installations
5.1 Highlights of electrical installation
1) Please separately design the special power of indoor units and outdoor units.
2) The power adopts special circuit, and installs creepage protector and manual switch.
3) The indoor units’ power, creepage protector and manual switch connecting to the same outdoor unit must
be general. All indoor units must be the same circuit, and must simultaneously on or off; otherwise, system life
will seriously effect, and appear the situation not to solve.4) The communication line between indoor units and
outdoor units please use 3 core shielded wiring, while don’t use the multi core wiring without shielded affect, for
the interference is reduced each other
5) Purchased wiring, parts and materials should be in compliance with the local and national regulations.
6) All field wiring construction should be finished by qualified electrician.
7) Air conditioning equipment should be grounded according to the relevant local and national electrical
regulations.
8) Current leakage protection switch should be installed (select current leakage breaker in light of the 1.5-2
times of total loading rated current.)
9) When connecting wiring and wire holder, use cable clamp to fix and make sure no exposure.
To Next Page
Loading...
