Additional Charge - McQuay CC10C Installation Manual

ADDITIONAL CHARGE

The refrigerant is pre-charged in the outdoor unit. If the
piping length is less than 5m, additional charge after
vacuuming is not necessary. When the piping length is more
than 5m, use the table below.
Additional charge operation
This operation must be done by using gas cylinder and a
precise weighing machine obligatorily. The additional charge
is top up into the outdoor unit by suction valve via service
port.
• Remove the service valve plug.
• Connect the low pressure manifold to the suction service
port, center manifold to the cylinder tank and close the
high pressure manifold (see figure below).
Purge all the flexible hose with refrigerant gas.
• Start the air conditioner unit.
• Open the gas cylinder and low pressure manifold valve.
• When the required refrigerant quantity is pumped in the
unit, close the low pressure manifold and the gas cylinder
valve.
• Disconnect the manometer and the gas cylinder. Place back
the service port cap.
LIQUID VALVE
CCC-0700 (01~16) ENG*
OUTDOOR UNIT
REFRIGERANT PIPING
LOW SIDE
PRESSURE GAUGE
GAS VALVE
MANIFOLD
13
Cooling only unit
Additional charge in gram
Model 7m
CC10C 30
CC15C 30
CC20C 30
CC25C 76
CC30C 100
CC40C 100
CC50C 100
CC60C 100
Heat pump unit
Additional charge in gram
Model 7m
CC10CR 40
CC15CR 40
CC20CR 50
CC25CR 100
CC30CR 100
CC40CR 100
CC50CR 100
CC60CR 100
Check refrigerant leak
Check with refrigerant detector whether there is a leak on
the flare type connection of the indoor unit and outdoor unit.
Hints: After operation for sometime, check if there is oil
traces, there is a leak.
INDOOR UNIT
HIGH PRESSURE GAUGE
FLEXIBLE HOSE
REFRIGERANT GAS TANK
1-13
2/1/01, 10:42 AM
10m 15m 20m
75 – –
75 – –
75 150 –
190 380 –
250 500 750
250 500 750
250 500 750
250 500 750
10m 15m 20m
100 – –
100 – –
125 250 –
250 500 –
250 500 750
250 500 750
250 500 750
250 500 750