10
Air Purging
Open/Close the valves
Leakage Test
Heat Insulation
Wrap to the foot of the piping
Field Piping side
Unit Body
Attached Heat Insulation Material
Use a vacuum pump, to vacuum from the gas side refrigerant adding mouth of the outdoor
unit.
Open/Close the spools or the valves of outdoor unit with a
f
5mm hexagon spanner.
Test if there is any leakage on the connections of the piping with soap water.
Heat insulation for the gas and liquid pipe separately.
Heat insulation should be fully and carefully done, because the liquid side pipe and gas side
pipe are easy to condense water due to low temperature when cooling.
O
Heat proof above 120 C material should be used at the gas side pipe.
The indoor unit connection parts should be no-gap heat-insulated with the attached heat insulation
materials.
Don
t use the refrigerant of the outdoor unit to do the vacuum. (A certain volume of refrigerant
had been added into the outdoor unit in factory.)
Summary of Contents for MDV-D112Q4/N2
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