Installation Guide
Tools Needed:
- Refrigeration manifold gauge set
- Vacuum pump
- Torque wrench
- Tube cutter and bender
- Leak detector
- Multimeter
- Level
- Drill with masonry bits
Step-by-Step Installation
- Select Installation Location: Choose a location with proper clearance (minimum 30cm around unit), solid mounting surface, and away from heat sources.
- Mount Indoor Unit: Install mounting plate securely on wall, ensuring level placement at least 15cm from ceiling and 2.2m from floor.
- Install Outdoor Unit: Place on level concrete pad or mounting brackets with proper vibration isolation and minimum 50cm clearance on all sides.
- Connect Refrigerant Lines: Run insulated copper lines between units, using proper bending radius to avoid kinks. Pressure test with nitrogen.
- Electrical Connection: Connect to dedicated circuit with proper disconnect switch. Follow local electrical codes for wire sizing and grounding.
- Vacuum and Charge: Evacuate system to 500 microns, hold vacuum for 30 minutes. Charge with specified refrigerant amount by weight.
- Drainage System: Install condensate drain line with proper slope (minimum 1cm per meter) and trap where required.
- System Test: Test all modes, check temperature differential (typically 8-12°C), verify proper drainage and electrical operation.
Specifications
| Model Series | RAS-24HK / RAS-24HK |
| Type | Split System Air Conditioner |
| Cooling Capacity | 24,000 BTU/h (2.0 Ton) |
| Heating Capacity | 26,000 BTU/h (Heat Pump Models) |
| Power Supply | 230V, 60Hz, 1 Phase |
| Rated Current (Cooling) | 10.8 A |
| Refrigerant Type | R-410A |
| Refrigerant Charge | 2.2 kg (Pre-charged + Field Charge) |
| SEER Rating | 18.5 (Energy Efficient) |
| HSPF Rating | 10.0 (Heat Pump Models) |
| Noise Level (Indoor/Outdoor) | 24 dB / 56 dB |
| Air Flow (High Speed) | 1,060 m³/h |
| Dimensions Indoor (HxWxD) | 29.5 x 89.5 x 21.5 cm |
| Dimensions Outdoor (HxWxD) | 55.0 x 84.5 x 31.0 cm |
| Weight (Indoor/Outdoor) | 9.5 kg / 38.0 kg |
Warranty Information
- Compressor Warranty: 10 years parts
- Parts Warranty: 5 years parts
- Labor Warranty: 1 year (extendable)
- Registration Bonus: Additional 1 year when registered within 90 days
For warranty service, contact HVAC Customer Service at 1-800-555-1234 or visit ACServiceManual.com
Key Features
Inverter Technology
Variable speed compressor adjusts cooling/heating output to match exact requirements, reducing energy consumption by up to 40% compared to conventional units.
Wi-Fi Connectivity
Smart control via mobile app allows remote temperature adjustment, scheduling, energy monitoring, and maintenance alerts from anywhere.
Multi-Stage Filtration
Four-stage filtration system including anti-bacterial filter, deodorizing filter, dust filter, and optional HEPA filter for improved indoor air quality.
Quiet Operation
Specialized noise reduction technology including insulated compressor compartment, fan blade design, and vibration dampeners for ultra-quiet performance.
Auto Clean Function
Automatically dries the indoor unit's heat exchanger after operation to prevent mold growth and maintain optimal efficiency.
Wide Temperature Operation
Operates efficiently in extreme conditions: cooling down to -10°C outdoor temperature, heating down to -25°C outdoor temperature.
Operating Modes Explained
Cool Mode
Standard cooling operation with adjustable temperature (16-30°C) and fan speed control
Heat Mode
Heating operation for heat pump models with defrost cycle for winter operation
Dry Mode
Dehumidification without significant temperature change for humid conditions
Fan Mode
Air circulation only without cooling/heating, multiple fan speeds available
Auto Mode
Automatically switches between cooling and heating based on room temperature
Sleep Mode
Gradually adjusts temperature and reduces fan speed for comfortable sleeping conditions
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit not starting | Power loss, tripped breaker, faulty remote | Check power supply, reset breaker, replace remote batteries |
| Poor cooling/heating | Dirty filters, low refrigerant, blocked airflow | Clean filters, check refrigerant charge, clear obstructions |
| Water leakage | Clogged drain line, improper installation slope | Clear drain line, ensure proper drainage slope |
| Unusual noises | Loose parts, debris in fan, vibration | Tighten components, clean fan blades, check mounting |
| Frozen coils | Low airflow, low refrigerant, dirty coils | Check filters and fan, verify refrigerant charge, clean coils |
| Frequent cycling | Oversized unit, thermostat issues, dirty condenser | Check sizing, calibrate thermostat, clean outdoor unit |
| Bad odors | Dirty filters, mold growth, stagnant water | Clean/replace filters, use anti-bacterial treatment, ensure drainage |
Error Codes
- E1: Room temperature sensor failure - Check sensor connection
- E2: Pipe temperature sensor failure - Check sensor and wiring
- E3: High pressure protection - Check condenser airflow and refrigerant
- E4: Low pressure protection - Check for leaks and refrigerant charge
- E5: Compressor overload - Check voltage and compressor windings
- E6: Communication error - Check wiring between indoor/outdoor units
- E7: Fan motor error - Check fan motor and capacitor
- E8: Water full protection - Check drain system and float switch
Maintenance Schedule
- Monthly: Clean air filters
- Seasonally: Clean indoor and outdoor coils
- Annually: Professional inspection, check refrigerant charge, clean drain line
- Every 2-3 years: Deep clean evaporator and condenser coils
- Every 5 years: Check electrical components, capacitor testing
Manual Downloads
Current Model Manuals
RAS-24HK / RAS-24HK
24K BTU Split System AC
RAS-18HK / RAS-18HK
18K BTU Split System AC
RAS-30HK / RAS-30HK
30K BTU Split System AC
RAS-36HK / RAS-36HK
36K BTU Split System AC
Heat Pump Models
RAS-24HPA / RAS-24HPA
24K BTU Heat Pump
RAS-30HPA / RAS-30HPA
30K BTU Heat Pump
RAS-36HPA / RAS-36HPA
36K BTU Heat Pump
RAS-48HPA / RAS-48HPA
48K BTU Heat Pump
Multi-Zone Systems
MXZ-3C30NAHZ
3-Zone Multi Split System
MXZ-4C36NAHZ
4-Zone Multi Split System
MXZ-5C42NAHZ
5-Zone Multi Split System
MXZ-8C60NAHZ
8-Zone Multi Split System