7
www.kahnclimatecontrol.co.uk
8
Do not vent refrigerant into the atmosphere: refrigerant ia a fluorinated greenhouse gas, covered
by Kyoto protocol, with a Global Warming Potential (GWP) = 1900(R410A)/1600(R407C)/1700(R22)
Notice:
If any leak exists, close off allen key valves and re-tighten the leaking joint
PUMP DOWN PROCEDURE / REFRIGERANT RECOVERY PROCEDURE:
DANGER
This part (Choke coil) generates high voltages.
Never touch this part.
SPECIAL INSTALLATION SETTING
PUMP DOWN (Refrigerant collecting operation)
Perform the following procedures to collect the refrigerant
when moving the indoor unit or the outdoor unit.
(1) Press the push-button switch on the circuit board once.
The LED on the circuit board starts flashing
(one second ON/one se-cond OFF).
This indicates the start of PUMP DOWN operation.
When the switch is pressed while the compressor is in operation,
PUMP DOWN operation starts automatically.
When the switch is pressed while the compressor is in stop,
the compressor starts to operate automatically,
and then move on to PUMP DOWN operation.
(2) PUMP DOWN operation continues for about 1 minute.
When PUMP DOWN operation is completed,
the compressor stops automatically.
Then close the 2-way valve and 3-way valve immediately.
(3) Turn the power off.
OUTDOOR UNIT
PUMP DOWN SW
