Hitachi
GI503DH-32V
DC Inverter Compressor • R32
Quick Stats
Capacity
18,500 BTU/h
Power
5,422 W (~7.27 HP)
Refrigerant
R32
Type
DC Inverter
Application
AC
Technical Specifications
Performance
| Cooling Capacity | 18,500 BTU/h |
| Cooling Capacity (W) | 5,422 W |
| Displacement | 50.3 cc |
| Application | AC |
Electrical
| Voltage | 220-240V/50Hz |
| Phase | 1-Phase |
| RLA (Running Load Amps) | 7.1 A |
| LRA (Locked Rotor Amps) | A |
Physical
| Weight | 12.5 kg |
| Oil Charge | 450 cc |
| Oil Type | POE |
Refrigerant
| Primary Refrigerant | R32 |
| Compressor Type | DC Inverter |
Oil Compatibility & Lubrication
Oil Specifications
| Required Oil Type | POE |
| Full Name | Polyol Ester (POE) |
| Viscosity Grades | ISO VG 32, 46 |
| Recommended | ISO VG 32 |
| Factory Charge | 450 cc |
Compatible Oil Brands
- Emkarate RL32-3MAF
- SUNISO 3GS
Important Warnings for R32
- • R-32 is mildly flammable (A2L) - avoid open flames
- • POE oil absorbs moisture - minimize air exposure
- • Lower viscosity preferred due to better miscibility
Oil Return: Good oil return characteristics due to excellent miscibility
General Oil Guidelines
!
Never mix MO (Mineral) and POE oils - causes chemical breakdown
💧
POE absorbs moisture - keep container sealed, minimize air exposure
✓
Check oil level through sight glass after 24 hours of operation
Installation Guidelines
1
Ensure the system is properly evacuated before charging with R32 refrigerant.
2
Use POE oil only. Oil charge: 450 cc.
3
Breaker size recommendation: 9 A minimum (based on RLA × 1.25).
4
Wire size should be rated for 7.1 A continuous load at 220-240V/50Hz.
Recommended Accessories
Start Capacitor
For high starting torque applications
Run Capacitor
Improves efficiency and power factor
Overload Protector
Thermal protection for motor
Start Relay
PTC or current relay for motor starting
Manufacturer Information
Brand: Hitachi
Country: Japan