1. Training for DVM air-conditioner
System Appliances Division
Quality Control Group

2. Contents Installation Work Piping installation Charging Refrigerant2 3 4
Drain hose 5
Outdoor unit installation 6
Installation Work 1
Wiring 7
Testing operation
Charging Refrigerant

3. 1. Installation Work

4. Installation Process 1. Field surveying and Meeting
Confirm condition/position of out-door unit, ceiling structure,
position of drain
Indoor unit,outdoor unit, pipe, distribution, drain, power, wire,
communication shop
2. Map Drawing
Process grasp building, equipment, fire fighting equip
3. Process Plan and a Main power Supply
and Demand Plan.
Clear position of indoor/outdoor unit
4. Pipe and drain construction
5. abnormal materials / tools check
Copper pipe, PVC pipe, adiabatic material, wire,tools
- 1 -

5. 7. leak test of copper pipe
6. piping
Keep pipe diameter/thickness standard:dust,water,airtight
keep adiabatic material and thickness
(cooling : over13mm, H/P :20mm)
7. leak test of copper pipe
(step-1)
Input N2 and leak test : 30 kgf/㎠ , keep 10kgf/㎠
when let it more than 1 month until installing
keep drain diameter /thickness : confirm damage, leak
keep insulated material and thickness : over 5mm
8. drain piping
9. leaking test of drain
Test drain slope and containing water

6. 14. Test run Install power /communication cable
10. wiring
Install power /communication cable
11. Install in/outdoor unit
indoor unit -fix anchor strongly,
outdoor unit (anti vibration pad)
12. leaking test (step -2)
input N2 and leak test : 30 kgf/㎠ 24Hr)
13. panel install on indoor unit and
vacuum
vacuum : 2hr↑, leave: 1hr↑,
maintain 755mmHg↓,
14. Test run
noise, vibration, leak, pressure,
C/H performance, communication