Add Refrigerant - Mistral MAS101 Operating Instructions Manual

INSTALL THE DRAIN JOINT
(heat pump type only)
• Install the double-channel drain joint in the
hole on the bottom of the outdoor unit's
bottom, then connect drain hose and joint.
CONNECT CONNECTING PIPE
• Wipe the air sealing oil on the closing valve
and the trump extended pipe; Screw down
the nut of connecting pipe with the wrench.
(the torque is as the indoor unit)
DISCHARGING THE AIR WITHIN THE UNITS:
• Unscrew cap for closing valve gas charging
hole.
• Open the closing valve with Allen key (turn
90˚ clockwise), then push in the gas charging
hole for about 10 seconds, (Until a gas like
fog appears, this indicates the air within unit
is fully discharged.)
• Screw down the screw cap of the gas
charging hole.
• Test for leaks with leak detector or soapy
water.

ADD REFRIGERANT

• If the connecting pipe is longer than 7 meters, add refrigerant as needed.
(Heat pump type) A=(Lm-7m)x50g/m. (A: add refrigerant amount, L: the length of connecting pipe)
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• Connect the refrigerant gas bottle with the gas charging hole;
(do not screw down the nut of the gas closing valve's end.)
• Open the bottle's valve of storage refrigerant, discharge the air of units with refrigerant;
• When gas like fog appears, indicating the air of unit is discharged, screw down the nut;
• Add refrigerant with the spring balance.
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TEST TEST
• Start leak test (with leak detector or soapy water) and inspect connecting cables before testing
operation. Test procedure: (Control unit by emergency operation switch or remote controller)
For detailed operation see "OPERATION OF AIR CONDITIONER."
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