TTA-R407C-EN1113
9
Refrigerant Charging
and Evacuation
Liquid Charging
After the refrigerant pipework system
has been pressure tested and
evacuated, the refrigerant may be
charged as follows.
1. Weigh the refrigerant cylinder on
weighing
scale.
2. Attach the charging line from the
center hose of manifold gauge to
R407C
cylinder.
3. Open valve on R407C cylinder and
purge the charging line.
4. Invert the refrigerant cylinder, open
the liquid line service valve. Open
manifold valve so that only liquid
will enter the system. The sufficient
operating charge is recommended
in Table 3.
Additional Charge
Refrigerant suitable for a tube length
of 12 to 25 feet is recommended in
Table 3. When the tube is longer than
25 feet, additional charging is
necessary. For the additional amount,
using the table 4 for recommended
amounts:
Recommended Charging Amount
4
Caution
• R407C charge in liquid phase only.
• Always evacuate air from the tubing
before adding refrigerant.
• Add refrigerant through the
charging port of liquid line valve
after the completion of evacuation.
• The refrigerant provided by the
manufacturer meets all the
requirements of our units. When
using recycled or reprocessed
refrigerant, it is advisable to ensure
its quality is equivalent to that of a
new refrigerant. For this, it is
necessary to have a precise
analysis made by a specialized
laboratory. If this condition is not
respected, the manufacturer’s
warranty could be cancelled.
Note:
Refrigerant charging in liquid
phase shall be turn over refrigerant
tank.
8
8
Low side
High side
Figure 3
Suction Line Service Valve
Liquid Line Service Valve
R407C
Close
TTA-R407C-EN1113.indd 9
TTA-R407C-EN1113.indd 9
12-Sep-16 13:28:23
12-Sep-16 13:28:23
