Chigo SA-ZM03ENG-1 Instruction Manual page 20

Notice:
①
When the connection pipe length is more than 5m, it must be evacuated with vacuum pump; after
evaporation, it shall be refilled according to requirements of "Adjustment of refrigerant usage amount".
②
If the air conditioner is necessary to transfer to the other position, discharge the air with vacuum pump or
refrigerant.
D.After completed above operation, it is necessary to fully open the check valve or ball valve of outdoor unit.
Pressure test, vacuumizing and leak test of connecting pipe and indoor unit pipeline:
After installed the connecting pipe and indoor unit, firstly charge the nitrogen into the connecting pipe and
indoor unit pipe to 3.0Mpa and keep the pressure for 24h; at same time, check the leak with soap bubble at the
connectors and welding positions; if no leak detected any more, discharge the nitrogen and vacuumize with
vacuum pump (the vacuum degree shall be less than 30Pa), and then open the main machine valve for test run
; if the refrigerant pipe length is more than 5m, refill the refrigerant and refer to following empirical formula:
R = ( L 1*0 . 030 k g / m)+(L2*0.065kg/m) Where: L1-Totalactual length of φ6.4 liquid pipe (m)
When refilling the refrigerant, use the needle valve on low pressure valve body of outdoor unit in refrigeration
mode.
4.Install the drainage pipeline
Please confirm there are enough space at unit installation position to mount the drainage pipeline, and ensure
the drain pipe diameter is no less than that of connection pipe. (Polyethylene pipe, dimension: 25mm; outer
diameter; 32mm)
A.The drain pipe should be short, and the slope of sagging should be equal to and more than 1%, to
ensure drainage smoothness and avoid condensate lag
B.If impossible to ensure adequate slope for drainage hose, the drainage lift pipe shall be installed.
C. To avoid bending of drainage hose, it will keep 1 to 1.5m distance between hanging bracket.
D. Use the attached drainage pipe
Insert the drainage hose into drainage socket till the white rubber belt.Tighten the clamp till the distance of
screw head from hose is less than 4mm.
E.The condensation may lead to water leak, so it is necessary to fulfill thermal insulation construction for
following two components.
1. Drainage pipe in room;
2. The drainage socket refers to the figure below; insulate the thermal for clamp and drainage pipe with
attached large sealing pad
Adhesive tape (white)
4.Installation of unit
1-1. 5m
Slope above 1/100
① ②
and clamp .
⑩
.
②
Clamp (accessories)
①
Water drain pipe
18
⑩
Large sealing pad (accessories)
②
Clamp (accessories)
Below 4mm