Dettson GWH09AGC-D3DNA1B-O Split Air Conditioner Owner’s Manual

: June 5, 2024
: Dettson

Dettson GWH09AGC-D3DNA1B-O Split Air Conditioner

Explanation of Symbols

WARNING

This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property.
Indicates important but not hazard-related information, used to indicate risk of property damage.

Exception Clauses

Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons.

Damage the product due to improper use or misuse of the product;
Alter, change, maintain or use the product with other equipment without abiding by the instruction manual of manufacturer;
After verification, the defect of product is directly caused by corrosive gas;
After verification, the defects are due to improper operation during transportation of product;
Operate, repair, maintain the unit without abiding by instruction manual or related regulations;
After verification, the problem or dispute is caused by the quality specification or performance of parts and components that produced by other manufacturers;
The damage is caused by natural calamities, bad using environment or force majeure.

If it needs to install, move or maintain the air conditioner, please contact dealer or local service center to conduct it at first. Air conditioner must be installed, moved or maintained by appointed unit. Otherwise, it may cause serious damage or personal injury or death.
When refrigerant leaks or requires discharge during installation, maintenance, or disassembly, it should be handled by certified professionals or otherwise in compliance with local laws and regulations.
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 they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.

Safety precautions

WARNING

Installation

Installation or maintenance must be performed by qualified professionals.
The appliance shall be in- stalled in accordance with national wiring regulations. According to the local safe- ty regulations, use qualified power supply circuit and circuit breaker.
All wires of indoor unit and outdoor unit should be connected by a professional. Be sure to cut off the power supply before proceeding any work related to electricity and safety.
Make sure the power supply matches with the requirement of air conditioner. Unstable power supply or incorrect wiring may result in electric shock, fire hazard or malfunction. Please install proper power supply cables before using the air conditioner.
The grounding resistance should comply with nation- al electric safety regulations.
Air Conditioner should be properly grounded. Incorrect grounding may cause electric shock.
Do not put through the power before finishing installation.
Do install the circuit breaker. If not, it may cause malfunction.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in fixed wiring. Circuit breaker should be included magnet buckle and heating buckle function. It can protect the overload and circuit-short.
Instructions for installation and use of this product are provided by the manufacturer.
Select a location which is out of reach for children and far away from animals or plants. If it is unavoidable, please add the fence for safety purpose.
The indoor unit should be installed close to the wall. Don’t use unqualified power cord.
If the length of power connection wire is insufficient, please contact the supplier for a new one.
The appliance must be positioned so that the plug is accessible.
For the air conditioner with plug, the plug should be reachable after finishing installation.
For the air conditioner with- out plug, a circuit breaker must be installed in the line.
The yellow-green wire in air conditioner is grounding wire, which can’t be used for other purposes. The air conditioner is the first class electric appliance. It must be properly grounder with specialized grounding device by a professional. Please make sure it is always grounded effectively, otherwise it may cause electric shock. The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper tube.

Operation and Maintenance

This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without super- vision.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
Do not connect air conditioner to multi-purpose socket. Otherwise, it may cause fire hazard.
Do disconnect power supply when cleaning air conditioner. Otherwise, it may
cause electric shock. Do not wash the air conditioner with water to avoid electric shock.
Do not spray water on in- door unit. It may cause electric shock or malfunction. Do not repair air conditioner by yourself. It may cause electric shock or damage. Please contact dealer when you need to repair air conditioner.
After removing the filter, do not touch fins to avoid injury.
Do not extend fingers or objects into air inlet or air outlet. It may cause person- al injury or damage.
Do not spill water on the re- mote controller, otherwise the remote controller may be broken.
Do not use fire or hair dryer to dry the filter to avoid deformation or fire hazard. Do not block air outlet or air inlet. It may cause mal- function.
Do not step on top panel of outdoor unit, or put heavy objects. It may cause dam- age or personal injury. When below phenomenon occurs, please turn off air conditioner and disconnect power immediately, and then contact the dealer or qualified professionals for service.
Power cord is overheating or damaged. There’s abnormal sound during operation. Circuit breaker trips off frequently.
Air conditioner gives off burning smell.
Indoor unit is leaking.

Parts name

Outdoor Unit

NOTE: Actual product may be different from above graphics, please refer to actual product.

Installation notice

Safety precautions for installing and relocating the unit

WARNING

When installing or relocating the unit, be s-ure to keep the refrigerant circuit free from air or substances other than the specified refrigerant.
Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or compressor rupture, resulting in injury.
When in stalling or moving this unit, do not charge the refrigerant which is not comply with that on the nameplate or unqualified refrigerant.
Otherwise, it may cause abnormal operation, wrong action, mechanical malfunction or even serious safety accident.
When refrigerant needs to be recovered during relocating or repairing the unit, be sure that the unit is running in cooling mode. Then, fully close the valve at high pressure side (liquid valve). About 30-40 seconds later, fully close the valve at low pressure side (gas valve), immediately stop the unit and disconnect power. Please note that the time for refrigerant recovery should not exceed 1 minute.
If refrigerant recovery takes too much time, air may be sucked in and cause pressure rise or compressor rupture, resulting in injury. During refrigerant recovery, make sure that liquid valve and gas valve are fully closed and power is disconnected before detaching the connection pipe.
If compressor starts running when stop valve is open and connection pipe is not yet connected, air will be sucked in and cause pressure rise or compressor rupture, resulting in injury.
When installing the unit, make sure that connection pipe is securely connected before the compressor starts running.
If compressor starts running when stop valve is open and connection pipe is not yet connected, air will be sucked in and cause pressure rise or compressor rupture, resulting in injury.
Prohibit installing the unit at the place where there may be leaked corrosive gas or flammable gas.
If there is leaked gas around the unit, it may cause explosion and other accidents.
Do not use extension cords for electrical connections. If the electric wire is not long enough, please contact a local service center authorized and ask for a proper electric wire. Poor connections may lead to electric shock or fire.
Use the specified types of wires for electrical connections between the indoor and outdoor units. Firmly clamp the wires so that their terminals receive no external stresses. Electric wires with insufficient capacity, wrong wire connections and insecure wire terminals may 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
vaccum pump
Pressure meter
Universal meter
Inner hexagon spanner
Measuring tape

Selection of installation location

Basic requirement

Installing the unit in the following places may cause malfunction. If it is unavoidable, please consult the local dealer:

The place with strong heat sources, vapors, flammable or explosive gas, or volatile objects spread in the air.
The place with high-frequency devices (such as welding machine, medical equipment).
The place near coast
The place with oil or fumes in the
The place with sulfureted
Other places with special circumstances.
The appliance shall not be installed in the laundry.
.It’s not allowed to be installed on the unstable or motive base structure (such as truck) or in the corrosive environment (such as chemical factory).

Outdoor unit

Select a location where the noise and outflow air emitted by the outdoor unit will not affect
The location should be well ventilated and dry, in which the outdoor unit won’t be exposed directly to sunlight or strong wind.
The location should be able to withstand the weight of outdoor unit.
Make sure that the installation follows the requirement of installation dimension diagram.
Select a location which is out of reach for children and far away from animals or plants. If it is unavoidable, please add the fence for safety

Safety precaution

Must follow the electric safety regulations w- hen installing the unit.
According to the local safety regulations, use qualified power supply circuit and air switch.
Make sure the power supply matches with the requirement of air Unstable power supply or incorrect wiring or malfunction. Pl- ease install proper power supply cables before using the air conditioner.
Properly connect the live wire, neutral wire and grounding wire of power socket.
Be sure to cut off the power supply before proceeding any work related to electricity and
Do not put through the power before finishing
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard .
The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper tube.
The appliance shall be installed in accordance with national wiring regulations.
The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper tube.

Grounding requirement

The air conditioner is the first class electric appliance. It must be properly grounded with specialized grounding device by a Please make sure it is always grounded effectively, otherwise it may cause electric shock.
The yellow-green wire in air conditioner is grounding wire, which can’t be used for other
The grounding resistance should comply with national electric safety regulations.
The appliance must be positioned so that the plug is accessible.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in fixed wiring.

Installation of outdoor unit

Step 1: Fix the support of outdoor unit (select it according to the actual installation situation)

Select installation location according to the house structure.
Fix the support of outdoor unit on the selected location with expansion screws

NOTICE
Take sufficient protective measures when installing the outdoor unit. Make sure the support can withstand at least four times of the unit weight.

The outdoor unit should be installed at least 3cm above the floor in order to install drain joint. for the model with heating tube, the installation height should be no less than 20cm.)
For the unit with cooling capacity of 2300W ~ 5000W, 6 expansion screws are needed; for the unit with cooling capacity of 6000W~8000W, 8 expansion screws are needed; for the unit with cooling capacity of 10000W~16000W, 10 expansion screws are needed.

Step 2: gas pipe Install drain joint (only for some models)

Connect the outdoor drain joint into the hole on the chassis, as shown in the picture below.
Connect the drain hose into the drain vent.

NOTICE
As for the shape of drainage joint, please refer to the current product. Do not install the drainage joint in the severe cold area. Otherwise, it will be
frosted and then cause malfunction.

Step 3: Fix outdoor unit

Place the outdoor unit on the
Fix the foot holes of outdoor unit with bolts.

Step 4: Connect indoor and outdoor pipes

Remove the screw on the right handle of out- door unit and then remove the handle
Remove the screw cap of valve and aim the pipe joint at the bellmouth of pipe.
Pretighten the union nut with hand.
Tighten the union nut with torque wrench by referring to the sheet below.

Hex nut diameter	Tightening torque(N .m)
1/4”	15~20
3/8”	30~40
1/2”	45~55
5/8”	60~65
3/4”	70~75

Step 5: Connect outdoor electric wire

Remove the wire clip; connect the power connection wire and signal control wire (only for cooling and heating unit) to the wiring terminal according to the color; fix them with screws.
Fix the power connection wire and signal control wire with wire clip (only for cooling and heating unit).

NOTE:

After tighten the screw, pull the power cord slightly to check if it is firm.
Never cut the power connection wire to prolong or shorten the distance.

Step 6: Neaten the pipes

The pipes should be placed along the wall, bent reasonably and hidden Min. semidiameter of bending the pipe is 10cm.
If the outdoor unit is higher than the wall hole, you must set a U-shaped curve in the pipe before pipe goes into the room, in order to prevent rain from getting into the room.

Test and operation

Use vacuum pump

Remove the valve caps on the liquid valve and gas valve and the nut of refrigerant charging
Connect the charging hose of piezometer to the refrigerant charging vent of gas valve and then connect the other charging hose to the vacuum
Open the piezometer completely and operate for 10-15min to check if the pressure of piezo- meter remains in -0.1MPa.
Close the vacuum pump and maintain this status for 1-2min to check if the pressure of piezo- meter remains in -0.1MPa. If the pressure de- creases, there may be leakage.
Remove the piezometer, open the valve core of liquid valve and gas valve completely with inner hexagon spanner.
Tighten the screw caps of valves and refrigerant charging vent.
Reinstall the handle

Leakage detection

With leakage detector: Check if there is leakage with leakage detector. With soap water:
If leakage detector is not available, please use soap water for leakage detection. Apply soap water at the suspected position and keep the soap water for more than 3min. If there are air bubbles coming out of this position, there’s a leakage.

Check after installation

● Check according to the following requirement after finishing installation.

Items to be checked| Possible malfunction
Has the unit been installed firmly?| The unit may drop, shake or emit noise.
Have you done the refri- gerant leakage test?| It may cause insufficient cooling(heating) capacity.
Is heat insulation of pipe- line sufficient?| It may cause condensation and water dripping.
Is water drained well?| It may cause condensation and water dripping.
Is the voltage of power supply according to the voltage marked on the nameplate?| It may cause malfunction or damage the parts.
Is electric wiring and pip- eline installed correctly?| It may cause malfunction or damage the parts.
Is the unit grounded securely?| It may cause electric leakage.
Does the power cord fol- low the specification?| It may cause malfunction or damage the parts.
Is there any obstruction in the air inlet and outlet?| It may cause insufficient cooling(heating) capacity.
The dust and sundries caused during installation are removed?| It may cause malfunction or damage the parts.
The gas valve and liquid valve of connection pipe are open completely?| It may cause insufficient cooling (heating) capacity.
Is the inlet and outlet of piping hole been covered?| It may cause insufficient cooling (heating) capacity or waste electricity.

Test operation

Preparation of test operation

The client approves the air
Specify the important notes for air conditioner to the client.

Method of test operation

Put through the power, press ON/OFF button on the remote controller to start operation.
Press MODE button to select AUTO, COOL, DRY, FAN and HEAT to check whether the operation is normal or not.
If the ambient temperature is lower than 16°C(61°F), the air conditioner can’t start cooling.

Configuration of connection pipe

1. Standard length of connection pipe: 5m, 7.5m, 8m.

2. Min. length of connection pipe is 3m.

3. Max. length of connection pipe is shown as below.

Max. length of connection pipe

Cooling capacity| Max. length of connection pipe(m)
5000Btu/h (1465W)| 15
7000Btu/h (2051W)| 15
9000Btu/h (2637W)| 15
12000Btu/h (3516W)| 20
18000Btu/h (5274W)| 25
24000Btu/h (7032W)| 25
28000Btu/h (8204W)| 30
36000Btu/h (10548W)| 30
42000Btu/h (12306W)| 30
48000Btu/h (14064W)| 30
4. The additional refrigerant oil and refrigerant charging required after prolonging connection pipe. After the length of connection pipe is prolonged for 10m at the basis of standard length, you should add 5ml of refrigerant oil for each additional 5m of connection pipe. The calculation method of additional refrigerant charging amount(on the basis of liquid pipe): Additional refrigerant charging amount = prolonged length of liquid pipe × additional refrigerant charging amount per meter Basing on the length of standard pipe, add re- frigerant according to the requirement as shown in the table. The additional refrigerant charging amount per meter is different according to the diameter of liquid pipe. See the following sheet.

Cut the pipe

Confirm the pipe length according to the distance of indoor unit and outdoor unit. Cut the required pipe with pipe cutter.

Remove the burrs

Remove the burrs with shaper and prevent the burrs from getting into the pipe

Put on suitable insulating pipe

Put on the union nut

Remove the union nut on the indoor connection pipe and outdoor valve; install the union nut on the pipe

Expand the port

Expand the port with

Outer diameter (mm)	A(mm)
Max	Min
Φ6 – 6.35(1/4″)	1.3
Φ9 – 9.52(3/8″)	1.6
Φ12-12.7(1/2″)	1.8
Φ15.8-16(5/8″)	2.4

Inspection

Check the quality of expanding port. If there is any blemish, expand the port again according to the steps above.

Working temperature range

| Indoor side DB/WB(°C /°F)| Outdoor side DB/WB(°C /°F)
---|---|---
Maximum| 26.7/19.4| 50/24
cooling| (80/67)| (122/75)

GWH09AGC-D3DNA1B/O, GWH12AGC-D3DNA1A/O GWH18AGD-D3DNA1B/O, GWH24AGE-D3DNA1A/

| Indoor side DB/WB(°C /°F)| Outdoor side DB/WB(°C /°F)
---|---|---
Maximum cooling| 26.7/19.4 (80/67)| 50/24 (122/75)
Maximum heating| 26.7/-(80/-)| 30/18 (86/65)

**NOTE**