MCAC-VTSM-2011-09
Installation
Unit Installation
71
1.3.2 General procedure
Pipe pre-install engineering
...............................
Ensure that the water drainage pipe inclines downward
Installing indoor unit
Check the model to avoid incorrect installation
Refrigerant piping engineering
...........................
Keep the refrigerant pipes dry, clean and sealed
Water drainage piping engineering
......................
Downward inclination
Air duct engineering
........................................
Ensure sufficient ventilation rate
Thermal insulation engineering
...........................
Ensure no gap between the thermal insulation materials
Electric engineering
........................................
Select proper power cables
(signal cable, power cable)
.............................
(Use 3-cores shielded wires)
On-site setup
Follow the wiring diagram (to avoid incorrect setup)
Civil work for outdoor unit
.................................
Avoid short-circuit ventilation and ensure sufficient maintenance
space
Installing outdoor unit
......................................
Avoid short-circuit ventilation and ensure sufficient maintenance
space
Air tightness test
............................................
Check whether the air pressure remains at 4.0Mpa
(R410a)
after
correction is made within 24 hours
Vacuum drying
Use vacuum pump that has a vacuum degree of less than -775mmHg
recharging refrigerant
......................................
Record the amount of refrigerant to be recharged on the outdoor
unit and document it
Installing decorative panel
................................
Ensure no gap between decorative panel and ceiling
Test Running and commissioning
........................
Run the indoor units one by one to check whether any pipe or cable
is incorrectly installed
Delivering operation instructions
.........................
Deliver related materials while providing operation instruction to the
user
Note:
The general procedure for refrigerant machine is subject to change according to the situation
