Innovair SLIM4 SWV Series Indoor Unit User Manual

Safety Precautions

It is crucial to read these Safety Precautions before operation and installation. Incorrect installation can lead to serious damage or injury. Potential risks are classified as WARNING or CAUTION.

⚠️ WARNING: This symbol indicates the possibility of personnel injury or loss of life.

⚠️ CAUTION: This symbol indicates the possibility of property damage or serious consequences.

General Warnings

• This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless supervised by a responsible person. Children should be supervised to ensure they do not play with the appliance.
• Always turn off and disconnect the power before performing any cleaning, installation, or repair. Failure to do so can cause electric shock.
• If an abnormal situation arises (e.g., a burning smell), immediately turn off the unit and disconnect the power. Contact your dealer for instructions.
• Do not insert fingers or objects into the air inlet or outlet, as the fan may be rotating at high speeds.
• Do not use flammable sprays near the unit, as this may cause fire or combustion.
• Do not operate the air conditioner near combustible gases, as emitted gas may collect and cause an explosion.
• Avoid operating in wet rooms (e.g., bathrooms) as water exposure can cause electrical components to short circuit.
• Do not expose your body directly to cool air for prolonged periods.
• Do not allow children to play with the air conditioner; they must be supervised.
• If using with burners or other heating devices, ensure thorough room ventilation to avoid oxygen deficiency.
• For environments like kitchens or server rooms, specially designed units are recommended.

Electrical Warnings

• Use only the specified wire. Damaged wires must be replaced by the manufacturer, service agent, or qualified personnel.
• The product must be properly grounded during installation to prevent electric shock.
• Follow all local and national wiring standards, regulations, and the Installation Manual for all electrical work. Ensure connections are tight and secure. Improper connections can lead to overheating, fire, or shock.
• All wiring must be arranged to allow the control board cover to close properly. Improperly closed covers can lead to corrosion and heat buildup.
• Disconnection must be incorporated in the fixed wiring per wiring rules.
• Do not share electrical outlets with other appliances. Insufficient power supply can cause fire or electric shock.
• For fixed wiring connections, use an all-pole disconnection device with at least 3mm clearances and a residual current device (RCD) not exceeding 30mA, as per wiring rules.

Cleaning and Maintenance Warnings

• Turn off and disconnect power before cleaning or maintenance to prevent electric shock.
• Do not clean the air conditioner with excessive amounts of water.
• Do not use combustible cleaning agents, as they can cause fire or deformation.

Cautionary Notes

• Turn off and disconnect the power if the unit will not be used for a long time.
• Turn off and unplug the unit during storms.
• Ensure water condensation can drain unhindered.
• Do not operate the unit with wet hands to avoid electric shock.
• Use the device only for its intended purpose.
• Do not climb on or place objects on the outdoor unit.
• Avoid operating the unit for long periods with doors or windows open, or in very high humidity.

Warning for Using Flammable Refrigerants

• Do not use methods other than those recommended by the manufacturer to accelerate defrosting or cleaning.
• Store the appliance in a room without continuously operating ignition sources (e.g., open flames, gas appliances, electric heaters).
• Do not pierce or burn the unit.
• Be aware that refrigerants may not have an odor.
• The LEAK DETECTION SYSTEM requires the unit to be powered for service.
• If the refrigerant sensor detects a leak, the indoor unit will display an error code, emit a buzzing sound, the compressor will stop, and the indoor fan will run. The sensor has a 15-year service life. A malfunctioning sensor displays "FHCC" and must be replaced by the manufacturer's specified sensor.

Nomenclature

The unit's model number is structured to indicate its specifications. For example, the series is 'S' for SLIM4, 'W' for Wall Mount Unit Type, 'V' for Variable Speed Feature. Nominal capacity is indicated by numbers like 18, 24, 30, 36 (representing 18K, 24K, 30K, 36K BTU). Electrical specifications include dual voltage options (115V & 208/230V), and refrigerant types like R454B or R32 are specified.

Example Breakdown:

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Refrigerant Information and Room Area Requirements

The following tables provide details on refrigerant charge amounts and minimum room areas for different models, designed to be used as matched indoor and outdoor systems.

Regular Heat Series

Hyper Heat Series

Refrigerant Charge and Room Area Data

The following table details the minimum room area (TAmin) required based on refrigerant charge (Mc or MREL) for various capacities. 'hinst' is the height of the appliance's bottom relative to the floor.

WARNING: The minimum room area or minimum room area of conditioned space is based on releasable charge and total system refrigerant charge.

Minimum Airflow Upon Refrigerant Leak Detection

Installation and Servicing

This section outlines critical procedures and qualifications for installing and servicing the unit, especially concerning flammable refrigerants.

1. Installation Requirements

• Personnel must hold a valid certificate for handling refrigerants safely.
• Maintenance and repair must be supervised by competent persons.
• Pipe-work should be minimized and protected from physical damage.
• Ensure compliance with national gas regulations and accessibility of mechanical connections.
• Prevent foreign matter from entering piping; seal openings securely.
• Store appliances in well-ventilated areas corresponding to operational room size.
• Detachable joints are not permitted on the indoor side; use brazed or welded joints.
• Ventilation openings must be kept clear of obstructions.

2. Flammable Refrigerant Installation Requirements

• Installation space and ventilation requirements depend on refrigerant mass charge, location, and ventilation type.
• Piping material, routing, and installation must protect against physical damage and comply with standards like ASHRAE 15, IAPMO, ICC, or CSA B52. Field joints must be accessible for inspection.
• Protection devices, piping, and fittings must be shielded from adverse environmental effects (e.g., water collection, dirt).
• Piping systems should be designed to minimize hydraulic shock.
• Steel pipes and components require rustproof coating.
• Take precautions against excessive vibration or pulsation.
• Minimum floor area requirements should be clearly stated.
• Field pipework must be pressure and vacuum tested before refrigerant charging.
• Pressure Testing: Low side and high side systems must be tested to their respective design pressures. If isolation is not possible, the entire system is tested to the low side design pressure. The test pressure must be maintained for at least 1 hour with no pressure drop.
• Evacuation Test: Vacuum levels must not rise above 1500 microns within 10 minutes after isolation from the pump. The specified vacuum level is the lesser of 500 microns or the value required by local codes.
• Field-made refrigerant joints indoors must be tightness tested with a sensitivity of 5 grams/year or better under pressure. No leaks should be detected.
• Any servicing must be performed only as recommended by the manufacturer.

3. Qualification of Workers

• All maintenance, service, and repair operations require qualified personnel.
• Procedures affecting safety must be performed by competent persons with documented training.
• Training should follow national standards and may include breaking into refrigerant circuits, opening sealed components, or opening ventilated enclosures.

Information Servicing

• Checks to the area: Ensure risk of ignition is minimized before working on systems with flammable refrigerants.
• Work procedure: Undertake work under controlled procedures to minimize the risk of flammable gas presence.
• General work area: Instruct staff on the work being carried out; avoid confined spaces.
• Checking for presence of refrigerant: Use appropriate detectors to ensure the area is free of potentially flammable atmospheres. Detection equipment must be suitable for flammable refrigerants (no sparking, sealed, or intrinsically safe).
• Presence of fire extinguisher: Have appropriate fire extinguishing equipment (dry powder or CO2) available for hot work.

6. No Ignition Sources

Avoid any ignition sources (including smoking) when working on refrigerant pipes to prevent fire or explosion risks. Survey the area for hazards and display "No Smoking" signs.

7. Ventilated Area

Ensure the work area is open or adequately ventilated, and maintain ventilation during work to disperse any released refrigerant.

8. Checks to the Refrigeration Equipment

• Electrical components must be fit for purpose and to specification. Follow manufacturer's maintenance guidelines.
• Verify actual refrigerant charge matches room size.
• Ensure ventilation machinery and outlets are operating and unobstructed.
• Check secondary circuits for refrigerant if an indirect circuit is used.
• Ensure equipment markings are visible and legible.
• Refrigeration pipes and components must be positioned to avoid corrosive substances.

9. Checks to Electrical Devices

• Initial safety checks and component inspections are required for electrical repairs.
• If a fault compromises safety, do not connect electrical supply until rectified. Use temporary solutions if operation must continue, and report to the owner.
• Initial safety checks include: discharging capacitors safely, ensuring no live electrical components are exposed, and checking earth bonding continuity.

10. Sealed electrical components

Replace if damaged.

11. Intrinsically safe components

Must be replaced if damaged.

12. Cabling

Check cabling for wear, corrosion, pressure, vibration, sharp edges, and aging effects.

13. Detection of Flammable Refrigerants

• Never use naked flame detectors (e.g., halide torches) for leak detection.
• Electronic leak detectors are acceptable, but sensitivity may need recalibration for flammable refrigerants. Ensure detectors are not ignition sources and are suitable for the refrigerant.
• Leak detection fluids are suitable, but avoid those containing chlorine.
• If a leak is suspected, extinguish all naked flames.
• If brazing is required for a leak, recover or isolate the refrigerant remotely.

14. Removal and Evacuation

• Follow conventional procedures for breaking into the refrigerant circuit, with emphasis on best practices for flammable refrigerants.
• Procedures include: safely removing refrigerant, evacuating, purging with inert gas (optional for A2L), and opening the circuit.
• Recover refrigerant into correct cylinders. Purge systems containing flammable refrigerants with oxygen-free nitrogen to render them safe. This may require repetition. Compressed air or oxygen must not be used.
• Purging involves breaking vacuum with oxygen-free nitrogen, filling to working pressure, venting, and pulling a vacuum.
• Vacuum pump outlets should be away from ignition sources, with adequate ventilation.

15. Charging Procedures

• Use appropriate tools for charging flammable refrigerants.
• Prevent refrigerant contamination. Use short hoses to minimize refrigerant volume.
• Keep cylinders upright.
• Earth the refrigeration system before charging.
• Label the system upon completion.
• Do not overfill the system.
• Pressure test with oxygen-free nitrogen and perform leak tests before commissioning.

16. Decommissioning

• Technicians must be familiar with the equipment. Recover refrigerants safely.
• Take oil and refrigerant samples if analysis is required. Ensure electrical power is available.
• Become familiar with equipment operation, isolate electrically, and ensure mechanical handling equipment, PPE, and recovery equipment are available and conform to standards.
• Pump down the system or use a manifold to remove refrigerant if vacuum is not possible.
• Weigh cylinders before recovery. Start recovery machine as per instructions.
• Do not overfill cylinders (max 80% liquid charge) or exceed their working pressure.
• Remove cylinders and equipment promptly after filling and closing isolation valves.
• Recovered refrigerant must not be charged into another system unless cleaned and checked.

17. Labelling

Label equipment as de-commissioned and emptied of refrigerant. For appliances with FLAMMABLE REFRIGERANTS, ensure labels indicate this.

18. Recovery

Remove refrigerants safely for servicing or decommissioning. Use appropriate recovery cylinders and ensure correct number are available. Cylinders must be suitable for the refrigerant and in good working order. Recovery equipment must be in good working order with instructions. Calibrated weighing scales and leak-free hoses are required. Process recovered refrigerant according to local legislation. Do not mix refrigerants. Evacuate compressors and oils to acceptable levels before removal. Do not heat compressor bodies with open flames.

19. Transportation, Marking and Storage for Units

• Comply with transport regulations for equipment containing flammable refrigerants.
• Mark equipment according to local regulations.
• Dispose of equipment containing flammable refrigerants according to national regulations.
• Store equipment according to manufacturer's instructions.
• Storage package protection must prevent mechanical damage that could cause refrigerant leaks. Storage quantity limits are determined by local regulations.

Explanation of Symbols

⚠️ WARNING: This symbol indicates the appliance uses a flammable refrigerant. A leak exposed to an ignition source poses a fire risk.

ℹ️ CAUTION: This symbol indicates the operation manual should be read carefully.

ℹ️ CAUTION: This symbol indicates service personnel should handle equipment with reference to the installation manual.

ℹ️ CAUTION: This symbol indicates information is available, such as in the operating or installation manual.

Indoor Unit Parts and Major Functions

1.1 Unit Parts

The indoor unit has an air outlet at the top and an air inlet at the bottom. Air is drawn in through the inlet, conditioned, and expelled through the outlet.

[Diagram of indoor unit showing air inlet and outlet]

1.2 Operating Conditions

Use the system within the following temperature ranges for safe and effective operation. Deviating from these conditions may cause malfunction or reduced efficiency.

INVERTER SPLIT TYPE

For Outdoor Units with Auxiliary Electric Heater: When the outside temperature is below 0°C (32°F), it is strongly recommended to keep the outdoor unit powered at all times to prevent damage.

NOTICE: Maintain room relative humidity below 80%. Operating above this level may cause condensation on the air conditioner's surface.

Optimizing Performance and Energy Saving

To further optimize your unit's performance, follow these guidelines:

• Keep doors and windows closed.
• Limit energy usage by using TIMER ON and TIMER OFF functions.
• Do not block air inlets or outlets.
• Regularly inspect and clean air filters.

1.3 Features

Refrigerant Leak Detection System

In case of a refrigerant leak, the LCD screen will display "ELOC", "EHC1", or "EHC2", and the LED indicator light will flash. The initial power-on temperature is set to 60°F for refrigeration and 86°F for heating.

NOTICE: Under normal working conditions, the switch, wind speed, and temperature cannot be adjusted by remote control. The wire controller can control the AUX function for live heating.

1.4 Energy Saving Tips

• Do not set the unit to excessive temperature levels.
• While cooling, close curtains to block direct sunlight.
• Keep doors and windows closed to retain cool or warm air.
• Do not place objects near the air inlet and outlet of the unit.
• Replace the air filter every 30 to 90 days, depending on thickness and MERV rating.

[Illustration: Closing curtains during heating helps keep heat in.]

[Illustration: Doors and windows should be kept closed.]

Care and Maintenance

Cleaning Your Indoor Unit

Before Cleaning or Maintenance

• Always turn off and disconnect the power supply before cleaning or maintenance.
• Contact an authorized service technician for repairs. Improper work may cause leakage, shock, fire, or void the warranty.
• Do not substitute fuses with different amperage ratings; use identical replacements to prevent circuit damage or electrical fire.
• Ensure the drain hose is correctly set up to prevent leakage and potential damage or shock.
• Verify all wires are properly connected to prevent electrical shock or fire.

Caution for All Pipes Installation

• Use a soft, dry cloth to wipe the unit. For stubborn dirt, use a cloth soaked in warm water.
• Do not use chemicals or chemically treated cloths.
• Avoid benzene, paint thinner, polishing powder, or other solvents, as they can crack or deform plastic surfaces. Volatile cleaners may cause fire.
• Do not use water hotter than 40°C (104°F) to clean the front panel, as it can cause deformation or discoloration.
• Do not wash the unit under running water due to electrical hazard.
• Clean with a damp, lint-free cloth and neutral detergent, then dry with a dry, lint-free cloth.

NOTICE: Inspect and clean or replace the air filter each month or as needed.

Maintenance Your AC

Maintenance – Long Periods of Non-Use

If the air conditioner will not be used for an extended period:

• Clean all filters.
• Turn on the FAN function until the unit dries out completely.

[Icon: Clean all filters]

[Icon: Turn on FAN function until unit dries out completely]

Maintenance – Pre-Season Inspection

Before periods of frequent use or after long periods of non-use:

• Check for damaged wires.
• Check for leaks.
• Ensure nothing is blocking all air inlets and outlets.
• Clean all filters.

[Icon: Check for damaged wires]

[Icon: Check for leaks]

[Icon: Make sure nothing is blocking all air inlets and outlets]

[Icon: Clean all filters]

Troubleshooting

Safety Precautions

If any of the following conditions occur, turn off the unit immediately:

• Smell of burning odor.
• Loud or abnormal sounds.
• Blown fuse or frequently tripping circuit breaker.
• Water or other objects falling into or out of the unit.

DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT AN AUTHORIZED SERVICE PROVIDER IMMEDIATELY!

Common Issues

The following problems are not typically malfunctions and may not require repairs:

Troubleshooting Guide

When problems occur, check the following points before contacting a repair company.

NOTICE: If a problem persists, contact a local dealer and provide a detailed description of the malfunction and the model number.