Nortek Global HVAC, LLC

Safety Precautions

WARNING: This symbol indicates the possibility of death or serious injury.

CAUTION: This symbol indicates the possibility of injury or damage to property.

NOTICE: Indicates important but not hazard-related information, used to indicate risk of property damage.

Installation

• Installation or maintenance must be performed by qualified professionals.
• The appliance shall be installed in accordance with national wiring regulations.
• According to local safety regulations, use qualified power supply circuit and circuit breaker.
• All wires of indoor and outdoor units should be connected by a professional.
• Ensure power supply is cut off before proceeding with any electrical work.
• Verify the power supply matches the air conditioner's requirements. Unstable power supply or incorrect wiring may result in electric shock, fire hazard, or malfunction. Install proper power supply cables before use.
• Grounding resistance should comply with national electric safety regulations.
• The air conditioner should be properly grounded. Incorrect grounding may cause electric shock.
• Do not turn on power before finishing installation.
• Install a circuit breaker; otherwise, malfunction may occur.
• An all-pole disconnection switch with a contact separation of at least .12 in all poles should be connected in fixed wiring.
• Circuit breakers should include magnet buckle and heating buckle functions for overload and short-circuit protection.

Installation (Continued)

• Instructions for installation and use are provided by the manufacturer.
• Select a location out of reach for children and far from animals or plants. Add a fence for safety if unavoidable.
• The indoor unit should be installed close to the wall.
• Do not use unqualified power cords.
• If the power connection wire length is insufficient, contact the supplier for a new one.
• The appliance must be positioned so that the plug is accessible. For units with a plug, ensure it is reachable after installation. For units without a plug, a circuit breaker must be installed in the line.
• The yellow-green wire is for grounding and cannot be used for other purposes.
• The air conditioner is a Class I appliance and must be properly grounded by a professional using a specialized grounding device. Ensure effective grounding to prevent electric shock.
• The temperature of the refrigerant circuit will be high; keep the interconnection cable away from the copper tube.

Operation and Maintenance

• This appliance can be used by children aged 8 and above, and persons with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, if given supervision or instruction on safe use and understanding of hazards.
• Children shall not play with the appliance.
• Cleaning and user maintenance shall not be done by children without supervision.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons to avoid a hazard.
• Do not connect the air conditioner to a multi-purpose socket, as it may cause a fire hazard.
• Disconnect power supply when cleaning the air conditioner to avoid electric shock.
• Do not wash the air conditioner with water to avoid electric shock.
• Do not spray water on the indoor unit, as it may cause electric shock or malfunction.
• Do not repair the air conditioner yourself. Contact the dealer for repairs to avoid electric shock or damage.
• After removing the filter, do not touch the fins to avoid injury.
• Do not insert fingers or objects into the air inlet or outlet, as it may cause personal injury or damage.
• Do not spill water on the remote controller, as it may be broken.
• Do not use fire or a hair dryer to dry the filter to avoid deformation or fire hazard.
• Do not block the air outlet or air inlet, as it may cause malfunction.
• Do not step on the top panel of the outdoor unit or place heavy objects on it, as it may cause damage or personal injury.
• If the following phenomena occur, turn off the air conditioner, disconnect power immediately, and contact the dealer or qualified professionals: power cord overheating or damaged, abnormal sound during operation, circuit breaker tripping frequently, burning smell, or indoor unit leaking.

Parts Name

Outdoor Unit

The outdoor unit has an air inlet and an air outlet.

Installation Notice

WARNING: When installing or relocating the unit, ensure the refrigerant circuit is free from air or substances other than the specified refrigerant. The presence of air or other foreign substances can cause system pressure rise or compressor rupture, resulting in injury.

When installing or moving the unit, do not charge with non-compliant or unqualified refrigerant. This may cause abnormal operation, malfunction, or safety accidents.

When refrigerant needs to be recovered during relocation or repair, ensure the unit is in cooling mode. Fully close the high-pressure (liquid) valve, then after 30-40 seconds, fully close the low-pressure (gas) valve. Stop the unit and disconnect power immediately. Refrigerant recovery should not exceed 1 minute. If it takes too long, air may be sucked in, causing pressure rise or compressor rupture.

During refrigerant recovery, ensure both valves are fully closed and power is disconnected before detaching the connection pipe. If the compressor runs with stop valves open and pipes not connected, air may be sucked in.

When installing the unit, ensure the connection pipe is securely connected before the compressor starts. If the compressor runs with stop valves open and pipes not connected, air may be sucked in.

Do not install the unit where corrosive or flammable gas may leak, as this could cause explosions.

Do not use extension cords for electrical connections. If the wire is not long enough, contact an authorized service center. Poor connections can lead to electric shock or fire.

Use specified wire types for electrical connections between indoor and outdoor units. Ensure terminals are securely clamped and free from external stress. Insufficient capacity wires, incorrect connections, or insecure terminals can cause electric shock or fire.

Tools for Installation

• Level meter
• Screw driver
• Impact drill
• Drill head
• Pipe expander
• Torque wrench
• Open-end wrench
• Pipe cutter
• Leakage detector
• Vacuum pump
• Pressure meter
• Universal meter
• Inner hexagon spanner
• Measuring tape

Selection of Installation Location

Basic Requirement

Installing the unit in the following locations may cause malfunction. If unavoidable, consult the local dealer:

• Places with strong heat sources, vapors, flammable or explosive gas, or volatile objects.
• Places with high-frequency devices (e.g., welding machines, medical equipment).
• Places near the coast.
• Places with oil or fumes in the air.
• Places with sulfureted gas.
• Other places with special circumstances.
• Not in the laundry.
• Not on unstable or motive base structures (e.g., trucks) or in corrosive environments (e.g., chemical factories).

Outdoor Unit

• Select a location where noise and outflow air from the outdoor unit will not affect the neighborhood.
• The location should be well-ventilated and dry, protected from direct sunlight or strong wind.
• The location must withstand the weight of the outdoor unit.
• Ensure installation follows the dimension diagram requirements.
• Select a location out of reach for children and far from animals or plants. Add a fence if unavoidable.

Safety Precaution (Installation)

• Follow electric safety regulations during installation.
• Use qualified power supply circuits and air switches according to local safety regulations.
• Ensure the power supply matches the air conditioner's requirements. Install proper power supply cables before use.
• Properly connect the live, neutral, and ground wires of the power socket.
• Cut off power supply before proceeding with any electrical work.
• Do not restore power before installation is complete.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified persons.

Requirements for Electric Connection

• Keep the interconnection cable away from the copper tube, as the refrigerant circuit temperature will be high.
• Install the appliance in accordance with national wiring regulations.

Grounding Requirement

• The air conditioner is a Class I appliance and requires proper grounding by a professional. Ensure effective grounding to prevent electric shock.
• The yellow-green wire is the grounding wire and cannot be used for other purposes.
• Grounding resistance must comply with national electric safety regulations.
• The appliance must be positioned for accessible plug connection.
• An all-pole disconnection switch with a contact separation of at least .12 in all poles should be connected in fixed wiring.

Installation of Outdoor Unit

Step 1: Fix the support of outdoor unit

Select installation location based on house structure. Fix the support of the outdoor unit on the selected location using expansion screws.

NOTICE: Take sufficient protective measures. Ensure the support can withstand at least four times the unit's weight. The outdoor unit should be installed at least 1.18" above the floor for drain joint installation (or 7.87" if heating tube is included). The number of expansion screws required varies by cooling capacity: 2300W-5000W need 6 screws; 6000W-8000W need 8 screws; 10000W-16000W need 10 screws.

Step 2: Install drain joint (for some models)

Connect the outdoor drain joint to the chassis hole and then connect the drain hose to the drain vent.

NOTICE: Refer to the current product for the drainage joint shape. Do not install the drainage joint in areas with severe cold, as it may freeze and cause malfunction.

Step 3: Fix outdoor unit

Place the outdoor unit on the support and fix the foot holes with bolts.

Step 4: Connect indoor and outdoor pipes

1. Remove the screw on the right handle of the outdoor unit and remove the handle.
2. Remove the screw cap of the valve and align the pipe joint with the bellmouth of the pipe.
3. Pretighten the union nut by hand.
4. Tighten the union nut with a torque wrench according to the provided table (Hex nut diameter vs. Tightening torque).

Step 5: Connect outdoor electric wire

Remove the wire clip. Connect the power connection wire and signal control wire (for cooling and heating units) to the wiring terminal according to color. Fix with screws. Secure the power and signal control wires with the wire clip. After tightening the screw, pull the power cord gently to check firmness. Never cut the power connection wire to adjust its length.

Step 6: Neaten the pipes

1. Place the pipes along the wall, bent reasonably, and hidden. The minimum bending radius is 4".
2. If the outdoor unit is higher than the wall hole, create a U-shaped curve in the pipe before it enters the room to prevent rain from entering.

NOTICE: The through-wall height of the drain hose should not be higher than the outlet pipe hole of the indoor unit. The water outlet should not be placed in water. Slant the drain hose slightly downwards; avoid curves, upward bends, or fluctuations.

Test and Operation

Use vacuum pump

1. Remove valve caps and refrigerant charging vent nut.
2. Connect the piezometer's charging hose to the gas valve's charging vent and the other hose to the vacuum pump.
3. Open the piezometer fully and operate for 10-15 minutes to check if the pressure remains at -0.1MPa.
4. Close the vacuum pump and maintain this status for 1-2 minutes. If pressure decreases, there may be a leakage.
5. Remove the piezometer and fully open the valve cores of the liquid and gas valves using an inner hexagon spanner.
6. Tighten the screw caps of valves and the refrigerant charging vent.
7. Reinstall the handle.

Leakage detection

• Use a leakage detector.
• Alternatively, use soap water. Apply to suspected areas and wait for 3 minutes. Air bubbles indicate a leak.

Test operation

• Preparation: Client approves the air conditioner. Explain important notes to the client.
• Method: Turn on power. Press ON/OFF on the remote controller. Use the MODE button to select AUTO, COOL, DRY, FAN, and HEAT to check for normal operation. Note: The air conditioner may not start cooling if the ambient temperature is below 60°F (15.6°C).

Check after installation

Configuration of connection pipe

1. Standard length of connection pipe: 16.4', 24.6', 26.25'.

2. Minimum length of connection pipe is 10'.

3. Maximum length of connection pipe is shown in the table.

Additional refrigerant charging amount for R410A

4. Additional refrigerant oil and refrigerant charging is required after prolonging the connection pipe.

• After the connection pipe length is prolonged by 32.8' beyond the standard length, add 0.16 oz of refrigerant oil for every additional 16.4' of connection pipe.
• Calculation method for additional refrigerant charging (liquid pipe basis): Additional refrigerant charging amount = prolonged length of liquid pipe x additional refrigerant charging amount per meter.
• Add refrigerant according to requirements based on standard pipe length. The additional refrigerant charging amount per meter varies with the liquid pipe diameter.

Pipe expanding method

NOTICE: Improper pipe expanding is the main cause of refrigerant leakage. Please expand the pipe according to the following steps:

A: Cut the pipe

Confirm the pipe length according to the distance between the indoor unit and outdoor unit. Cut the required pipe with a pipe cutter. Ensure the cut is perpendicular, without leaning, unevenness, or burrs.

B: Remove the burrs

Remove burrs with a shaper and prevent them from entering the pipe. Ensure a smooth inner surface.

C: Put on suitable insulating pipe

Apply insulating pipe to the pipe.

D: Put on the union nut

Remove the union nut on the indoor connection pipe and outdoor valve, then install the union nut on the pipe.

E: Expand the port

Expand the port with an expander. Ensure the length is equal and the surface is smooth.

NOTICE: "A" (expansion depth) varies by diameter. Refer to the sheet below.

F: Inspection

Check the quality of the expanding port. If there are any blemishes, re-expand the port according to the steps above.

Working temperature range

Various model numbers are listed with their corresponding indoor and outdoor side temperature ranges (DB/WB in °C/°F).

NOTE: The operating temperature range (outdoor temperature) for cooling is -18°C(0°F) to 48°C(118°F); for heat pump units, it is -25°C(-13°F) to 48°C(118°F).