Opening The Closed Valves - Panasonic U-16GE2E5 Manual De Instrucciones

• When charging with additional refrigerant, use liquid only.
• R410A cylinders are colored gray with a pink top.
• Check whether a siphon tube is present (indicated on the label at the
top of the cylinder).
• Depending on refrigerant and system pressure, conventional
refrigerant (R22, R407C) equipment may or may not be compatible
with R410A equipment, so care is needed.
In particular, the gauge manifold used must be specifi cally designed
for R410A.
• Be sure to check the limiting density.
• Refer to the section "4. OPENING THE CLOSED VALVES" (→ page 17)
when the instructions call for fully opening all valves.
3-6. Finishing the outer tubing covering
• Insulate absolutely all of the tubes to units, including
branch tubes. The surface of insulating materials is
subject to condensation, especially in a hot, humid
environment, so choose insulation that is thick enough,
as per JIS A 9501.
Further, fi ll in any gaps to prevent moisture from getting
in at the ends and joints of the insulation.
If not enough insulation is used, it may result in leaking
or dripping water.
The criteria for selecting insulation are provided in the
installation planning guide, so refer to it in selecting
materials.
Use insulation for gas tubes that is heat resistant to at
least 120°C and at least 80°C for liquid (and suction
tubes) tubes.
• Use separate piping for the power cables and the control
cables. If the cables are passed through the same pipes,
the effects of electrical noise and induction can cause
malfunctions.

4. OPENING THE CLOSED VALVES

Ball valves are used for the closed valves on the outdoor unit. Each can be opened and closed by rotating
the tab 90 degrees.
Follow the procedure below to securely open the valves.
1. Remove the cap.
2. Slowly and securely turn the tab to the left
(counterclockwise) 90 degrees.
The valve is fully open when the tab has
been rotated 90 degrees (when it contacts
the stopper). Do not forcefully attempt to
turn the tab past this point.
Be sure to open the closed valve all the way.
Thermal insulation
(120°C or higher heat resistance)
Control cable
Gas tube
3-Way Multi 3-tube Side
Discharge tube
(mid-size tube)
Thermal insulation
Rotate the tab 90 degrees.
Fully closed (time of shipping)
Fig. 20 Rotating the Tab
EN - 17
Pink
Liquid
Siphon tube
refrigerant
R410A cylinder
Duct (or similar) tape
(for waterproofi ng)
Thermal insulation
Liquid tube
Suction tube
Duct (or similar)
(largest tube)
tape
Liquid tube (small tube)
Fig. 19
Fully open