Cooper Hunter AB Mini Split Wall Mounted Air Conditioner Installation Guide

MINI SPLIT WALL MOUNTED AIR CONDITIONER Installation Manual

IMPORTANT NOTE:
Read this manual and SAFETY MANUAL(if any) carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference.

Accessories

The air conditioning system comes with the following accessories. Use all of the installation parts and accessories to install the air conditioner. Improper installation may result in water leakage, electrical shock and fire, or cause the equipment to fail. The items are not included with the air conditioner must be purchased separately.

Name of Accessories| Q‘ty(pc)| Shape| Name of Accessories| Q‘ty(pc)| Shape
---|---|---|---|---|---
Manual| 2~3| | Remote controller| 1|
Drain joint (for cooling &
heating models)| 1| | Battery| 2|
Seal (for cooling &
heating models)| 1| | Remote controller
holder(optional)| 1|
Mounting plate| 1| | Fixing screw for remote controller holder(optional)| 2|
 Anchor| 5~8 (depending
on models)| | (Need to be installed on
the back of main air filter
by the authorized technician while installing
the machine) Small Filter| 1~2 (depending
on models)|
Mounting plate
fixing screw| 5~8 (depending
on models)|

Installation Summary – Indoor Unit

Unit Parts

NOTE: The installation must be performed in accordance with the requirement of local and national standards. The installation may be slightly different in different areas.

1. Wall Mounting Plate
2. Front Panel
3. Power Cable (Some Units)
4. Louver| 5. Functional Filter (On Back of
Main Filter – Some Units)
6. Drainage Pipe
7. Signal Cable
8. Refrigerant Piping| 9. Remote Controller
10. Remote controller Holder
(Some Units)
11. Outdoor Unit Power Cable
(Some Units)
---|---|---

NOTE ON ILLUSTRATIONS
Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be slightly different. The actual shape shall prevail.

Indoor Unit Installation

Installation Instructions – Indoor unit
PRIOR TO INSTALLATION
Before installing the indoor unit, refer to the label on the product box to make sure that the model number of the indoor unit matches the model number of the outdoor unit.
Step 1: Select installation location
Before installing the indoor unit, you must choose an appropriate location. The following are standards that will help you choose an appropriate location for the unit.
Proper installation locations meet the following standards:
Good air circulation
Convenient drainage
Noise from the unit will not disturb other people
Firm and solid—the location will not vibrate
Strong enough to support the weight of the unit
A location at least one meter from all other electrical devices (e.g., TV, radio, computer)
DO NOT install unit in the following locations:
Near any source of heat, steam, or combustible gas
Near flammable items such as curtains or clothing
Near any obstacle that might block air circulation
Near the doorway
In a location subject to direct sunlight
NOTE ABOUT WALL HOLE:
If there is no fixed refrigerant piping:
While choosing a location, be aware that you should leave ample room for a wall hole (see Drill wall hole for connective piping step) for the signal cable and refrigerant piping that connect the indoor and outdoor units.
The default position for all piping is the right side of the indoor unit (while facing the unit).
However, the unit can accommodate piping to both the left and right.
Refer to the following diagram to ensure proper distance from walls and ceiling: Step 2: Attach mounting plate to wall
The mounting plate is the device on which you will mount the indoor unit.

• Remove the screw that attaches the mounting plate to the back of the indoor unit.
• Secure the mounting plate to the wall with the screws provided. Make sure that mounting plate is flat against the wall.

NOTE FOR CONCRETE OR BRICK WALLS:
If the wall is made of brick, concrete, or similar material, drill 5mm- diameter (0.2in-diameter) holes in the wall and insert the sleeve anchors provided. Then secure the mounting plate to the wall by tightening the screws directly into the clip anchors.
Step 3: Drill wall hole for connective piping

1. Determine the location of the wall hole based on the position of the mounting plate. Refer to Mounting Plate Dimensions.
2. Using a 2.5in (65mm) or 3.54in (90mm) (depending on models )core drill, drill a hole in the wall. Make sure that the hole is drilled at a slight downward angle, so that the outdoor end of the hole is lower than the indoor end by about 0.2-0.275in (5mm-7mm). This will ensure proper water drainage.
3. Place the protective wall cuff in the hole. This protects the edges of the hole and will help seal it when you finish the installation process.

CAUTION
When drilling the wall hole, make sure to avoid wires, plumbing, and other sensitive components. MOUNTING PLATE DIMENSIONS
Different models have different mounting plates.
For the different customization requirements, the shape of the mounting plate and the dimensions of the indoor unit may be slightly different.
See Type A and Type B for example: NOTE: When the gas side connective pipe is Φ5/8in(16mm) or more, the wall hole should be 3.54in(90mm).
Step 4: Prepare refrigerant piping
The refrigerant piping is inside an insulating sleeve attached to the back of the unit. You must prepare the piping before passing it through the hole in the wall.

1. Based on the position of the wall hole relative to the mounting plate, choose the side from which the piping will exit the unit.

2. If the wall hole is behind the unit, keep the knock-out panel in place. If the wall hole is to the side of the indoor unit, remove the plastic knock-out panel from that side of the unit.
   This will create a slot through which your piping can exit the unit. Use needle nose pliers if the plastic panel is too difficult to remove by hand.

3. If existing connective piping is already embedded in the wall, proceed directly to the Connect Drain Hose step. If there is no embedded piping, connect the indoor unit’s refrigerant piping to the connective piping that will join the indoor and outdoor units.
   Refer to the Refrigerant Piping Connection section of this manual for detailed instructions.

NOTE ON PIPING ANGLE
Refrigerant piping can exit the indoor unit from four different angles:Left- hand side,Right-hand side, Left rear, Right rear. CAUTION
Be extremely careful not to dent or damage the piping while bending them away from the unit. Any dents in the piping will affect the unit’s performance.
Step 5: Connect drain hose
By default, the drain hose is attached to the lefthand side of unit (when you’re facing the back of the unit). However, it can also be attached to the right-hand side. To ensure proper drainage, attach the drain hose on the same side that your refrigerant piping exits the unit. Attach drain hose extension (purchased separately) to the end of drain hose.

• Wrap the connection point firmly with Teflon tape to ensure a good seal and to prevent leaks.
• For the portion of the drain hose that will remain indoors, wrap it with foam pipe insulation to prevent condensation.
• Remove the air filter and pour a small amount of water into the drain pan to make sure that water flows from the unit smoothly.

NOTE ON DRAIN HOSE PLACEMENT
Make sure to arrange the drain hose according to the following figures.
Make sure there are no kinks or dent in drain hose to ensure proper drainage. NOT CORRECT
Kinks in the drain hose will create water traps. Kinks in the drain hose will create water traps. NOT CORRECT
Do not place the end of the drain hose in water or in containers that collect water.
This will prevent proper drainage.
PLUG THE UNUSED DRAIN HOLE
To prevent unwanted leaks you must plug the unused drain hole with the rubber plug provided.
BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE REGULATIONS

1. All wiring must comply with local and national electrical codes, regulations and must be installed by a licensed electrician.
2. All electrical connections must be made according to the Electrical Connection Diagram located on the panels of the indoor and outdoor units.
3. If there is a serious safety issue with the power supply, stop work immediately. Explain your reasoning to the client, and refuse to install the unit until the safety issue is properly resolved.
4. Power voltage should be within 90-110% of rated voltage. Insufficient power supply can cause malfunction, electrical shock, or fire.
5. If connecting power to fixed wiring, a surge protector and main power switch should be installed.
6. If connecting power to fixed wiring, a switch or circuit breaker that disconnects all poles and has a contact separation of at least 1/8in (3mm) must be incorporated in the fixed wiring. The qualified technician must use an approved circuit breaker or switch.
7. Only connect the unit to an individual branch circuit outlet. Do not connect another appliance to that outlet.
8. Make sure to properly ground the air conditioner.
9. Every wire must be firmly connected. Loose wiring can cause the terminal to overheat, resulting in product malfunction and possible fire.
10. Do not let wires touch or rest against refrigerant tubing, the compressor, or any moving parts within the unit.
11. If the unit has an auxiliary electric heater, it must be installed at least 40in (1m) away from any combustible materials.
12. To avoid getting an electric shock, never touch the electrical components soon after the power supply has been turned off. After turning off the power, always wait 10 minutes or more before you touch the electrical components.

WARNING
BEFORE PERFORMING ANY ELECTRICAL OR WIRING WORK, TURN OFF THE MAIN POWER TO THE SYSTEM.
Step 6: Connect signal and power cables
The signal cable enables communication between the indoor and outdoor units. You must first choose the right cable size before preparing it for connection.
Cable Types

• Indoor Power Cable (if applicable): H05VV-F or H05V2V2-F
• Outdoor Power Cable: H07RN-F or H05RN-F
• Signal Cable: H07RN-F

Minimum Cross-Sectional Area of Power and Signal Cables
North America

CHOOSE THE RIGHT CABLE SIZE
The size of the power supply cable, signal cable, fuse, and switch needed is determined by the maximum current of the unit. The maximum current is indicated on the nameplate located on the side panel of the unit.
NOTE: In North America, please choose the right cable size according to the Minimum Circuit Ampacity indicated on the nameplate of the unit.
WARNING
ALL WIRING MUST BE PERFORMED STRICTLY IN ACCORDANCE WITH THE WIRING DIAGRAM LOCATED ON THE BACK OF THE INDOOR UNIT S FRONT PANEL .

1. Open front panel of the indoor unit.

2. Using a screwdriver, open the wire box cover on the right side of the unit. This will reveal the terminal block.• For the units with conduit tube to connect the cable, remove the big plastic knock-out panel to create a slot through which the conduit tube can be installed.
   • For the units with five-core cable, remove the middle small plactic knock- out panel to create a slot through which the cable can exit.
   • Use needle nose pliers if the plastic panel is too difficult to remove by hand.

3. Unscrew the cable clamp below the terminal block and place it to the side.

4. Facing the back of the unit, remove the plastic panel on the bottom left-hand side.

5. Feed the signal wire through this slot, from the back of the unit to the front.

6. Facing the front of the unit, connect the wire according to the indoor unit’s wiring diagram, connect the u-lug and firmly screw each wire to ‘tj correspt;nfdlng tern;lnal. wire connechon§ d need to match from condenser to evaporator (indoor)
     CAUTION
   DO NOT MIX UP LIVE AND NULL WIRES
   This is dangerous, and can cause the air conditioning unit to malfunction.

7. After checking to make sure every connection is secure, use the cable clamp to fasten the signal cable to the unit. Screw the cable clamp down tightly.

8. Replace the wire cover on the front of the unit, and the plastic panel on the back.

NOTE ABOUT WIRING
THE WIRING CONNECTION PROCESS MAY DIFFER SLIGHTLY BETWEEN UNITS AND REGIONS.
Step 7: Wrappiping and cables
Before passing the piping, drain hose, and the signal cable through the wall hole, you must bundle them together to save space, protect them, and insulate them(Not applicable in North America).

1. Bundle the drain hose, refrigerant pipes, and signal cable as shown below: DRAIN HOSE MUST BE ON BOTTOM
   Make sure that the drain hose is at the bottom of the bundle. Putting the drain hose at the top of the bundle can cause the drain pan to overflow, which can lead to fire or water damage.
   DO NOT INTERTWINE SIGNAL CABLE WITH OTHER WIRES
   While bundling these items together, do not or twine or cross the signal cable with any other wiring.

2. Using adhesive vinyl tape, attach the drain hose to the underside of the refrigerant pipes.

3. Using insulation tape, wrap the signal wire, refrigerant pipes, and drain hose tightly together. Double-check that all items are bundled.

DO NOT WRAP ENDS OF PIPING
When wrapping the bundle, keep the ends of the piping unwrapped. You need to access them to test for leaks at the end of the installation process (refer to Electrical Checks and Leak Checks section of this manual).
Step 8: Mount indoor unit
If you installed new connective piping to the outdoor unit, do the following:

1. If you have already passed the refrigerant piping through the hole in the wall, proceed to Step 4.
2. Otherwise, double-check that the ends of the refrigerant pipes are sealed to prevent dirt or foreign materials from entering the pipes.
3. Slowly pass the wrapped bundle of refrigerant pipes, drain hose, and signal wire through the hole in the wall.
4. Hook the top of the indoor unit on the upper hook of the mounting plate.
5. Check that unit is hooked firmly on mounting by applying slight pressure to the left and right-hand sides of the unit. The unit should not jiggle or shift.
6. Using even pressure, push down on the bottom half of the unit. Keep pushing down until the unit snaps onto the hooks along the bottom of the mounting plate.
7. Again, check that the unit is firmly mounted by applying slight pressure to the left and the right-hand sides of the unit.

If refrigerant piping is already embedded in the wall, do the following:

1. Hook the top of the indoor unit on the upper hook of the mounting plate.
2. Use a bracket or wedge to prop up the unit, giving you enough room to connect the refrigerant piping, signal cable, and drain hose.
3. Connect drain hose and refrigerant piping (refer to Refrigerant Piping Connection section of this manual for instructions).
4. Keep pipe connection point exposed to perform the leak test (refer to Electrical Checks and Leak Checks section of this manual).
5. After the leak test, wrap the connection point with insulation tape.
6. Remove the bracket or wedge that is propping up the unit.
7. Using even pressure, push down on the bottom half of the unit. Keep pushing down until the unit snaps onto the hooks along the bottom of the mounting plate.

UNIT IS ADJUSTABLE
Keep in mind that the hooks on the mounting plate are smaller than the holes on the back of the unit. If you find that you don’t have ample room to connect embedded pipes to the indoor unit, the unit can be adjusted left or right by about 1.18-1.96in (30-50mm), depending on the model.

Outdoor Unit Installation

Install the unit by following local codes and regulations , there may be differ slightly between different regions. Installation Instructions – Outdoor unit
Step 1: Select installation location
Before installing the outdoor unit, you must choose an appropriate location. The following are standards that will help you choose an appropriate location for the unit.
Proper installation locations meet the following standards:
Meets all spatial requirements shown in Installation Space Requirements above.
Good air circulation and ventilation
Firm and solid—the location can support the unit and will not vibrate
Noise from the unit will not disturb others
Protected from prolonged periods of direct sunlight or rain
Where snowfall is anticipated, take appropriate measures to prevent ice buildup and coil damage.
DO NOT install unit in the following locations:
Near an obstacle that will block air inlets and outlets
Near a public street, crowded areas, or where noise from the unit will disturb others
Near animals or plants that will be harmed by hot air discharge
Near any source of combustible gas
In alocation that is exposed to large amounts of dust
In alocation exposed to a excessive amounts of salty air
SPECIAL CONSIDERATIONS FOR EXTREME WEATHER
If the unit is exposed to heavy wind:
Install unit so that air outlet fan is at a 90° angle to the direction of the wind. If needed, build a barrier in front of the unit to protect it from extremely heavy winds.
See Figures below. ![Cooper Hunter AB Mini Split Wall Mounted Air Conditioner

• WEATHER](https://manuals.plus/wp-content/uploads/2023/11/Cooper-Hunter-AB- Mini-Split-Wall-Mounted-Air-Conditioner-WEATHER.jpg)If the unit is frequently exposed to heavy rain or snow:
  Build a shelter above the unit to protect it from the rain or snow. Be careful not to obstruct air flow around the unit.
  If the unit is frequently exposed to salty air (seaside):
  Use outdoor unit that is specially designed to resist corrosion.
  Step 2: Install drain joint(Heat pump unit only)
  Before bolting the outdoor unit in place, you must install the drain joint at the bottom of the unit.
  Note that there are two different types of drain joints depending on the type of outdoor unit.
  If the drain joint comes with a rubber seal (see Fig. A ), do the following:

  1. Fit the rubber seal on the end of the drain joint that will connect to the outdoor unit.
  2. Insert the drain joint into the hole in the base pan of the unit.
  3. Rotate the drain joint 90° until it clicks in place facing the front of the unit.
  4. Connect a drain hose extension (not included) to the drain joint to redirect water from the unit during heating mode.

If the drain joint doesn’t come with a rubber seal (see Fig. B ), do the following:

1. Insert the drain joint into the hole in the base pan of the unit. The drain joint will click in place.
2. Connect a drain hose extension (not included) to the drain joint to redirect water from the unit during heating mode.

IN CILD CLIMATES
In cold climates, make sure that the drain hose is as vertical as possible to ensure swift water drainage. If water drains too slowly, it can freeze in the hose and flood the unit.
Step 3: Anchor outdoor unit
The outdoor unit can be anchored to the ground or to a wall-mounted bracket with bolt(M10). Prepare the installation base of the unit according to the dimensions below.
UNIT MOUNTING DIMENSIONS
The following is a list of different outdoor unit sizes and the distance between their mounting feet. Prepare the installation base of the unit according to the dimensions below.

If you will install the unit on the ground or on a concrete mounting platform, do the following:

1. Mark the positions for four expansion bolts based on dimensions chart.
2. Pre-drill holes for expansion bolts.
3. Place anut on the end of each expansion bolt.
4. Halmmer expansion bolts into the pre-drille holes.
5. Remove the nuts from expansion bolts, and place outdoor unit on bolts.
6. Put washer on each expansion bolt, then replace the nuts.
7. Using a wrench, tighten each nut until snug.

WARNING
WHEN DRILLING INTO CONCRETE, EYE PROTECTION IS RECOMMENDED AT ALL TIMES.
If you will install the unit on a wall-mounted bracket, do the following:
CAUTION
Make sure that the wall is made of solid brick, concrete, or of similarly strong material. The wall must be able to support at least four times the weight of the unit.

1. Mark the position of bracket holes based on dimensions chart.
2. Pre-drill the holes for the expansion bolts.
3. Place a washer and nut on the end of each expansion bolt.
4. Thread expansion bolts through holes in mounting brackets, put mounting brackets in position, and hammer expansion bolts into the wall.
5. Check thaF the mounting br_ackets are level.
6. Carefully lift unit and place its mounting feet on brackets.
7. Bolt the unit firmly to the brackets.
8. If allowed, install the unit with rubber gaskets to reduce vibrations and noise.

Step 4: Connect signal and power cables
The outside unit’s terminal block is protected by an electrical wiring cover on the side of the unit.
A comprehensive wiring diagram is printed on the inside of the wiring cover.
WARNING
BEFORE PERFORMING ANY ELECTRICAL OR WIRING WORK, TURN OFF THE MAIN POWER TO THE SYSTEM.

1. Prepare the cable for connection:
   USE THE RIGHT CABLE
   Please choose the right cable refer to “ Cable types” in page 22.
   CHOOSE THE RIGHT CABLE SIZE
   The size of the power supply cable, signal cable, fuse, and switch needed is determined by the maximum current of the unit. The maximum current is indicated on the nameplate located on the side panel of the unit.
   NOTE: In North America, please choose the right cable size according to the Minimum Circuit Ampacity indicated on the nameplate of the unit.
   a. Using wire strippers, strip the rubber jacket from both ends of cable to reveal about 1.57in (40mm) of the wires inside.
   b. Strip the insulation from the ends of the wires.
   c. Using a wire crimper, crimp u-lugs on the ends of the wires.
   PAY ATTENTION TO LIVE WIRE
   While crimping wires, make sure you clearly distinguish the Live (“L”) Wire from other wires.
   WARNING
   ALL WIRING WORK MUST BE PERFORMED STRICTLY IN ACCORDANCE WITH THE WIRING DIAGRAM LOCATED INSIDE OF WIRE COVER OF THE OUTDOOR UNIT.

2. Unscrew the electrical wiring cover and remove it.

3. Unscrew the cable clamp below the terminal block and place it to the side.

4. Connect the wire according to the wiring diagram, and firmly screw the u-lug of each wire to its corresponding terminal.

5. After checking to make sure every connection is secure, loop the wires around to prevent rain water from flowing into the terminal.

6. Using the cable clamp, fasten the cable to the unit. Screw the cable clamp down tightly.

7. Insulate unused wires with PVC electrical tape. Arrange them so that they do not touch any electrical or metal parts.

8. Replace the wire cover on the side of the unit, and screw it in place.

NOTE: If the cable clamp looks like the following, please select the appropriate through-hole according to the diameter of the wire. In North America

1. Remove the wire cover from the unit by loosening the 3 screws.
2. Dismount caps on the conduit panel.
3. Temperarily mount the conduit tubes(not included) on the conduit panel.
4. Properly connect both the power supply and low voltage lines to the corresponding terminals on the terminal block.
5. Ground the unit in accordance with local codes.
6. Be sure to size each wire allowing several inches longer than the required length for wiring.
7. Use lock nuts to secure the conduit tubes.

Refrigerant Piping Connection

When connecting refrigerant piping, do not let substances or gases other than the specified refrigerant enter the unit. The presence of other gases or substances will lower the unit’s capacity, and can cause abnormally high pressure in the refrigeration cycle. This can cause explosion and injury.
Note on Pipe Length
The length of refrigerant piping will affect the performance and energy efficiency of the unit. Nominal efficiency is tested on units with a pipe length of 16.5ft (5m) In North America, the standard pipe lengthis 25’ (7.5m). A minimum pipe run of 3 metres is required to minimise vibration & excessive noise.
In special tropical area, for the R290 refrigerant models, no refrigerant can be added and the maximum length of refrigerant pipe should not exceed 32.8ft (10m).
Refer to the table below for specifications on the maximum length and drop height of piping.
Maximum Length and Drop Height of Refrigerant Piping per Unit Model

Model| Capacity (BTU/h)| Max. Length (ft-m)| Max. Drop Height (ft-m)
---|---|---|---
R410A,R32 Inverter
Split Air Conditioner| < 15,000| 82ft (25)| 33ft (10)

15,000 and < 24,000| 98.5ft (30)| 66ft (20)
24,000 and < 36,000| 164ft (50)| 82ft (25)
R22 Fixed-speed
Split Air Conditioner| < 18,000| 33ft (10)| 16ft (5)
18,000 and < 21,000| 49ft (15)| 26ft (8)
21,000 and < 35,000| 661t (20)| 33ft (10)
R410A, R32 Fixed-speed
Split Air Conditioner| < 18,000| 66ft (20)| 26ft (8)
18,000 and < 36,000| 82ft (25)| 33ft (10)

Connection Instructions – Refrigerant Piping

Step 1: Cut pipes
When preparing refrigerant pipes, take extra care to cut and flare them properly. This will ensure efficient operation and minimize the need for future maintenance.

1. Measure the distance between the indoor and outdoor units. o
2. Using a pipe cutter, cgt the pipe a little longer than the measured distance.
3. Make sure that the pipe is cut at a perfect 90° angle.

DO NOT DEFORM PIPE WHILE CUTTING
Be extra careful not to damage, dent, or deform the pipe while cutting. This will drastically reduce the heating efficiency of the unit.
Step 2: Remove burrs
Burrs can affect the air-tight seal of refrigerant piping connection. They must be completely removed.

1. Hold the pipe at a downward angle to prevent burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove all burrs from the cut section of the pipe.

Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight seal.

1. After removing burrs from cut pipe, seal the ends with PVC tape to prevent foreign materials from entering the pipe.

2. Sheath the pipe with insulating material.

3. Place flare nuts on both ends of pipe. Make sure they are facing in the right direction, because you can’t put them on or change their direction after flaring.

4. Remove PVC tape from ends of pipe when ready to perform flaring work.

5. Clamp flare form on the end of the pipe.
   The end of the pipe must extend beyond the edge of the flare form in accordance with the dimensions shown in the table below. PIPING EXTENSION BEYOND FLARE FORM** Outer Diameter of Pipe (mm)| A (mm)
   ---|---
   Min.| Max.**
   Ø 0.25” (Ø 6.35)| 0.0275” (0.7)| 0.05” (1.3)
   Ø 0.375” (Ø 9.52)| 0.04” (1.0)| 0.063” (1.6)
   Ø 0.5” ( Ø 12.7)| 0.04” (1.0)| 0.07” (1.8)
   Ø 0.63″ (Ø 16)| 0.078” (2.0)| 0.086” (2.2)
   Ø 0.75” (Ø 19)| 0.078” (2.0)| 0.094” (2.4)

6. Place flaring tool onto the form.

7. Turn the handle of the flaring tool clockwise until the pipe is fully flared.

8. Remove the flaring tool and flare form, then inspect the end of the pipe for cracks and even flaring.

Step 4: Connect pipes
When connecting refrigerant pipes, be careful not to use excessive torque or to deform the piping in any way. You should first connect the low-pressure pipe, then the high-pressure pipe.
MINIMUM BEND RADIUS
When bending connective refrigerant piping, the minimum bending radius is 10cm. Instructions for Connecting Piping to Indoor Unit

1. Align the center of the two pipes that you will connect.
2. Tighten the flare nut as tightly as possible by hand.
3. Using a spanner, grip the nut on the unit tubing.
4. While firmly gripping the nut on the unit tubing, use a torque wrench to tighten the flare nut according to the torque values in the Torque Requirements table below. Loosen the flaring nut slightly, then tighten again.

TORQUE REQUIREMENTS

Outer Diameter of Pipe
(in-mm)| Tightening Torque (N.m)| Flare dimension (B) (in-mm)| Flare shape
---|---|---|---
Ø 0.25” (Ø 6.35mm )| 18~20(180~200kgf.cm)| 0.33~0.34” (8.4~8.7)|
Ø 0.375” (Ø 9.52mm )| 32~39(320~390kgf.cm)| 0.52~0.53″ (13.2~13.5)
Ø 0.5″ ( Ø 12.7mm)| 49~59(490~590kgf.cm)| 0.64~0.65″ (16.2~16.5)
Ø 0.63” (Ø 16mm)| 57~71(570~710kgf.cm)| 0.76~0.78″ (19.2~19.7)
Ø 0.75” (Ø 19mm)| 67~101(670~1010kgf.cm)| 0.91~0.93″ (23.2~23.7)

DO NOT USE EXCESSIVE TORQUE
Excessive force can break the nut or damage the refrigerant piping. You must not exceed torque requirements shown in the table above.
Instructions for Connecting Piping to Outdoor Unit

1. Unscrew the cover from the packed valve on the side of the outdoor unit.

2. Remove protective caps from ends of valves.

3. Align flared pipe end with each valve, and tighten the flare nut as tightly as possible by hand.

4. Using a spanner, grip the body of the valve.
   Do not grip the nut that seals the service valve.

5. While firmly gripping the body of the valve, use a torque wrench to tighten the flare nut according to the correct torque values.

6. Loosen the flaring nut slightly, then tighten again.

7. Repeat Steps 3 to 6 for the remaining pipe.

USE SPANNER TO GRIP MAIN BODY OF VALVE
Torque from tightening the flare nut can snap off other parts of valve.

Air Evacuation

Preparations and Precautions
Air and foreign matter in the refrigerant circuit can cause abnormal rises in pressure, which can damage the air conditioner, reduce its efficiency, and cause injury. Use a vacuum pump and manifold gauge to evacuate the refrigerant circuit, removing any non-condensable gas and moisture from the system.
Evacuation should be performed upon initial installation and when unit is relocated.
BEFORE PERFORMING EVACUATION
 Check to make sure the connective pipes between the indoor and outdoor units are connected properly .
Check to make sure all wiring is connected properly.
Evacuation Instructions

1. Connect the charge hose of the manifold gauge to service port on the outdoor unit’s low pressure valve.

2. Connect another charge hose from the manifold gauge to the vacuum pump.

3. Open the Low Pressure side of the manifold gauge. Keep the High Pressure side closed.

4. Turn on the vacuum pump to evacuate the system.

5. Run the vacuum for at least 15 minutes, or until the Compound Meter reads -76cmHG (-10°pa).

6. Close the Low Pressure side of the manifold gauge, and turn off the vacuum pump.

7. Wait for 5 minutes, then check that there has been no change in system pressure.

8. If there is a change in system pressure, refer to Gas Leak Check section for information on how to check for leaks. If there is no change in system pressure, unscrew the cap

9. from the packed valve (high pressure valve).
   Insert hexagonal wrench into the packed valve (high pressure valve) and open the valve by turning the wrench in a 1/4 counterclockwise turn. Listen for gas to exit the system, then close the valve after 5 seconds.

10. Watch the Pressure Gauge for one minute to make sure that there is no change in pressure. The Pressure Gauge should read slightly higher than atmospheric pressure.

11. Remove the charge hose from the service port.

12. Using hexagonal wrench, fully open both the high pressure and low pressure valves.

13. Tighten valve caps on all three valves (service port, high pressure, low pressure) by hand.
    You may tighten it further using a torque wrench if needed.

OPEN VALVE STEMS GENTLY
When opening valve stems, turn the hexagonal wrench until it hits against the stopper. Do not try to force the valve to open further.
Note on Adding Refrigerant
Some systems require additional charging depending on pipe lengths. The standard pipe length varies according to local regulations. For example, in North America, the standard pipe length is 7.5m (25′).
In other areas, the standard pipe length is 5m (16″). The refrigerant should be charged from the service port on the outdoor unit’s low pressure valve. The additional refrigerant to be charged can be calculated using the following formula:
ADDITIONAL REFRIGERANT PER PIPE LENGTH

R410A:
(Pipe length — standard length)
x 15g/m
(Pipe length — standard length)
x 0.160Z/ft| Liquid Side: Ø 9.52 (Ø 0.375″)
RaT0A:
(Pipe length — standard length) x 30g/m
(pipe length — standard length) x 0.320Z/ft

CAUTION DO NOT mix refrigerant types.

Electrical and Gas Leak Checks

Before Test Run
Only perform test run after you have completed the following steps:

• Electrical Safety Checks – Confirm that the unit’s electrical system is safe and operating properly
• Gas Leak Checks — Check all flare nut connections and confirm that the system is not leaking
• Confirm that gas and liquid (high and low pressure) valves are fully open

Electrical Safety Checks
After installation, confirm that all electrical wiring is installed in accordance with local and national regulations, and according to the Installation Manual.
BEFORE TEST RUN
Check Grounding Work
Measure grounding resistance by visual detection and with grounding resistance tester. Grounding resistance must be less than 0.1Q).
Note: This may not be required for some locations in North America.
DURING TEST RUN
Check for Electrical Leakage
During the Test Run, use an electroprobe and multimeter to perform a comprehensive electrical leakage test.
If electrical leakage is detected, turn off the unit immediately and call a licensed electrician to find and resolve the cause of the leakage.
Note: This may not be required for some locations in North America.
WARNING – RISK OF ELECTRIC SHOCK
ALL WIRING MUST COMPLY WITH LOCAL AND NATIONAL ELECTRICAL CODES, AND MUST BE INSTALLED BY A LICENSED ELECTRICIAN.
Gas Leak Checks
There are two different methods to check for gas leaks.
Soap and Water Method
Using a soft brush, apply soapy water or liquid detergent to all pipe connection points on the indoor unit and outdoor unit. The presence of bubbles indicates a leak.
Leak Detector Method
If using leak detector, refer to the device’s operation manual for proper usage instructions.
AFTER PERFORMING GAS LEAK CHECKS
After confirming that the all pipe connection points DO NOT leak, replace the valve cover on the outside unit. A: Low pressure stop valve
B: High pressure stop valve
C& D: Indoor unit flare nuts

Test Run

Test Run Instructions
You should perform the Test Run for at least 30 minutes.

1. Connect power to the unit.

2. Press the ON/OFF button on the remote controller to turn it on.

3. Press the MODE button to scroll through the following functions, one at a time:
   • COOL-Select lowest possible temperature
   • HEAT – Select highest possible temperature

4. Let each function run for 5 minutes, and perform the following checks:
   List of Checks to Perform| |
   ---|---|---
   No electrical leakage| |
   Unitis properly grounded| |
   All electrical terminals properly covered| |
   Indoor and outdoor units are solidly installed| |
   Al pipe connection points do not leak| Outdoor (2):| Indoor (2):
   Water drains properly from drain hose| |
   All piping is properly insulated| |
   Unit performs COOL function properly| |
   Unit performs HEAT function properly| |
   Indoor unit louvers rotate properly| |
   Indoor unit responds to remote controller| |

DOUBLE-CHECK PIPE CONNECTIONS
During operation, the pressure of the refrigerant circuit will increase. This may reveal leaks that were not present during your initial leak check. Take time during the Test Run to double-check that all refrigerant pipe connection points do not have leaks. Refer to Gas Leak Check section for instructions.

5. After the Test Run is successfully completed, and you confirm that all checks points in List of Checks to Perform have PASSED, do the following:
   a. Using remote control, return unit to normal operating temperature.
   b. Using insulation tape, wrap the indoor refrigerant pipe connections that you left uncovered during the indoor unit installation process.

IF AMBIENT TEMPERATURE IS BELOW 16°C (60°F)
You can’t use the remote controller to turn on the COOL function when the ambient temperature is below 16°C. In this instance, you can use the MANUAL CONTROL button to test the COOL function.

1. Lift the front panel of the indoor unit, and raise it until it clicks in place.
2. The MANUAL CONTROL button is located on the right-hand side of the unit. Press it 2 times to select the COOL function.
3. Perform Test Run as normal.

Packing and unpacking the unit

Instructions for packing and unpacking the unit:
Unpacking:
Indoor unit:

1. Cut the sealing tape on the carton with a knife, one cut on the left, one cut in the middle and one cut on the right.
2. Use the vice to take out the sealing nails on the top of the carton.
3. 0pen the carton.
4. Take out the middle support plate if it is included.
5. Take out the accessory package, and take out the connecting wire if it is included.
6. Lift the machine out of the carton and lay it flat.
7. Remove the left and right package foam or the upper and lower packaging foam, untie the packaging bag.

Outdoor Unit

1. Cut the packing belt.
2. Take the unit out of the carton.
3. Remove the foam from the unit.
4. Remove the packaging bag from the unit.

Packing:
Indoor unit:

1. Put the indoor unit into the packing bag.
2. Attach the left and right package foam or the upper and lower packaging foam to the unit.
3. Put the unit into the carton, then put accessory package in.
4. Close the carton and seal it with the tape.
5. Using the packing belt if necessary.

Outdoor unit:

1. Put the outdoor unit into the packing bag.
2. Put the bottom foam into the box.
3. Put the unit into the carton, then put the upper packaging foam on the unit.
4. Close the carton and seal it with the tape.
5. Using the packing belt if necessary.

NOTE: Please keep all packaging items if you may need in the future.
The design and specifications are subject to change without prior notice for product improvement. Consult with the sales agency or manufacturer for details.
Any updates to the manual will be uploaded to the service website, please check for the latest version.

CS445U1-18C(AG)(C)
16122000009614
20210715

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