Gree GWC09AA, Installation And Service Manual

Page: 67 / 136

GREE Service Manual GWC09AA / K5NNA6A Page 67
The Quick-Coupler Valves
To interconnect the Pipe-Set for refrigerant transfer (liquid-line and suction-line)
Quick-Coupler are used. All parts used for AC system assembling are pre-
charged with pressurised refrigerant R-290. The release of refrigerant is practi-
cally not possible during the correct connection of the quick coupler.
Advantages with the use of quick-coupler:
•
Fast and easy connection of liquid– and suction line in fixed installation
from the evaporator to the valve assembly of the outdoor unit.
•
Durable gas tight interconnection.
•
Repeated interconnection is possible (placing of the AC unit at another
suitable installation place).
The valve and quick-connector assembly consists of:
Suction Line (L)
1. Stop valve at outdoor unit (stem to be activated by Allen-key) with ½” SAE
connection.
2. Service port 1/4” SAE connection with internal Schrader valve .
3. Male Quick-Coupler part—valve side
4. Female Quick-Coupler part—Suction line side with ½” pipe joint.
Liquid Line (H)
5. Stop valve at outdoor unit (stem to be activated by Allen-key) with ¼” SAE
connection.
6. Male Quick-Coupler part—valve side
7. Female Quick-Coupler part—Suction line side with
¼
” pipe joint.
For leak free
connection of
the pipe set to
the
outdoor unit
valves
in total four (4)
mechanical
connections
have to be
tightened!
L
H
6
7
4
3
2
1
5
Tighten here!
Tighten here!
Valve
Caps
Carefully mount
the valve caps
and the service
port cap back to
the stop-valves
and include
these spots into
the leak-check
activities!
With final com-
missioning of
the system
all theses
mechanical
connections are
subject to a leak
check with ap-
propriate leak-
detector!