Purging The Refrigerant Piping - McQuay D Serie Manual De Instalación

Heat Pump Unit CC 75 / 100 DR
Indoor unit
Outdoor unit
Voltage range**
Power supply cable size* (50/60 Hz)
Number of conductors
Interconnection cable size*
Number of conductors
Recommended fuse* (50/60 Hz)
CC 75 / 100 DR
Power Supply Cable
!
There must be a double pole switch with a
minimum 3mm contact gap and fuse /
circuit breaker as recommended in the
fixed installation circuits.
IMPORTANT:
* These values are for information only, they should be checked and selected to comply with the local and/or national
codes and regulations. They are also subjected to the type of installation and size of conductors.
** The appropriate voltage range should be checked with data label on the unit. ETL listed unit is only applicable to
60Hz power supply only.
• Ensure that the colors of wires on the outdoor unit and the terminal markings are the same as the indoor unit
respectively.
Purging The Piping And The Indoor Unit
Except the outdoor unit which is pre-charged with refrigerant R22,
the indoor unit and the refrigerant connection pipes must be air
purged because the air that contain moisture remaining in the
refrigerant cycle may cause malfunction to the compressor.
The outdoor unit is equipped by two 3 ways refrigerating connecting
valves. The suction valve is the larger one while the small one is
the liquid valve. Both valves are supplied with service port valve
for connection to a manometer.
• Remove the caps from the valve and the service port.
• Connect the center manifold gauge with the vacuum pump.
• Connect the manifold gauge to the service port of the 3 ways
valve.
• Start the vacuum pump. Check the low pressure manifold gauge
until it indicate 0.9 bar. The evacuation time varies with each
vacuum pump capacity but generally in half an hour.
mm 2
2
mm
A
R S T N
!
FOR SL 30 / 40 / 50 / 60 C/CR & 4SL 30 / 40 / 50 / 60 C/CR:

PURGING THE REFRIGERANT PIPING

CC75DR
4MSS/ MSS75DR
380V-415V / 3Ph / 50Hz+N+! or 208V-230V / 3Ph / 60Hz+N+!
16/25
5
2.5
8
40/60
OF L N
4WV COMP
A OF L N
4WV COMP
CAUTION
• Close the manifold valve and stop the vacuum pump.
• On the outdoor unit, open the suction and liquid valve (anti
clockwise) with 4 mm key for hexagon sacked screw.
• The air conditioner unit is ready for start.
• If the reading is close to 0, the refrigerant circuit must be
evacuated (by vacuum pump) and charged (R22) again.
Service
Port
1-10
CC100DR
4MSS/ MSS100DR
25/35
2.5
50/75
N HP HP DS DS
To Indoor Control Board
Indoor Unit
Terminal Block
Refrigerant
Flexible Hose
Flare
Piping
Nut
Outdoor Unit
3 way Valve
5
8
Outdoor Unit
Terminal Block
4 mm
Allen
Key