Solaris SunPump MACHRW010W, Installation Instructions Manual

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6
E: After the air discharging(vacuumming),disconnect
the connecting between the pressure gauge and
indoor unit stop valve .
F: Open the stop valve at indoor unit high/low pressure
side by valve plug, then let the indoor unit's refrigerant
flow in outdoor unit(if need to add more refrigerant, please refer to 2.4).
When the pipe is too long, please add
additional refrigerant as following formula:
Additional refrigerant amount=
(one-way tube length -5)m x (0.015~0.02) kg,
choose 0.015 or 0.02 according to the size
of diameter.
When the tracheal diameter = 12.7,
choose 0.015;
when the diameter = 15.88, choose 0.02 .
The methods to add refrigerant
refer to the right diagram :
2.5 Add refrigerant
Stop valve
High pressure
side
Hose
Composite table
Outdoor unit
Indoor unit
Low pressure side
Stop valve
Scale
Refrigerant
charge tank
After discharge the air, use electronic leak detector or soapy water to test all the connectors in the
indoor and outdoor unit.
2.6 Leak check
As the picture show, connect the vacuum pump
with the pressure gauge, and then connect the
vacuumed connecting pipe with the needle valve
on the indoor unit low pressure side.
B: Unscrew the valve plug nut on the stop valve ,
and unscrew the needle nut on the indoor unit
low pressure side.
C: Open the stop valve at outdoor unit high/low
pressure side by valve plug.
Note: Do not open the indoor unit high/low
pressure side stop valve.
D: Open the compound pressure gauge and vacuum
pump to vacuum the so that
the absolute pressure not higher than 130Pa, and
keep the pressure does not rise within 5 minutes
after vacuum.
As the following steps:
A:
outdoor unit and pipe,
2.4 Air discharge (by vacuum pump)
Stop valve
Vacuum pump
High pressure side
Hose
Composite table
Outdoor unit
Indoor unit
Low pressure side
Stop valve
If the system large or after maintenance of outdoor system, should use the vacuum pump discharge way
to empty the air and water within the system.