Panasonic KIT-ADC05L3E5 Air To Water Heatpump Outdoor Unit Installation Guide

Panasonic KIT-ADC05L3E5 Air To Water Heatpump Outdoor Unit

Product Information

The AIR-TO-WATER HEATPUMP outdoor unit is available in three models: WH- WDG05LE5, WH-WDG07LE5, and WH-WDG09LE5. It uses the refrigerant R290 and operates with the help of various tools and equipment.

Required Tools for Installation Works

1. Phillips screwdriver
2. Level gauge
3. Electric drill, hole core drill
4. Hexagonal wrench (4 mm)
5. Spanner
6. Pipe cutter
7. Reamer
8. Knife
9. Gas leak detector
10. Measuring tape
11. Thermometer
12. Megameter
13. Multimeter
14. Torque wrench
15. Hand gloves (for refrigerant circuit repair)
16. Vacuum pump
17. Gauge manifold
18. Recovery machine
19. Recovery cylinder

Please note that this product should only be installed or serviced by qualified personnel. It is important to refer to the National, State, Territory, and local legislation, regulations,  codes, installation & operation manuals before installation,maintenance, and/or service of this product.

Safety Precautions

The product includes symbols that provide important information regarding safety and usage:

• WARNING: This symbol indicates the possibility of causing death or serious injury.
• CAUTION: This symbol indicates the possibility of causing injury or damage to properties only.
• PROHIBITED: Items marked with this symbol should not be followed.
• MUST BE CARRIED OUT: Items marked with this symbol must be followed.

Product Usage Instructions

Follow the instructions below for safe and effective usage of the AIR-TO-WATER HEATPUMP outdoor unit:

• Do not use any means to accelerate the defrosting process or to clean the unit, other than those recommended by the manufacturer. Using unfit methods or incompatible materials may cause product damage, burst, and serious injury.
• Ensure that the outdoor unit is not installed near the handrail of a veranda. When installing the unit at a veranda of a high-rise building, there is a risk of a child climbing up to the outdoor unit and crossing over the handrail, which may cause an accident.
• Do not use unspecified cords, modified cords, joint cords, or extension cords for the power supply cord. Also, avoid sharing the single outlet with other electrical appliances. Poor contact, poor insulation, or overcurrent can lead to electrical shock or fire.
• Avoid tying up the power supply cord into a bundle using a band, as it may cause abnormal temperature rise on the cord.
• Do not insert fingers or other objects into the unit as the high-speed rotating fan may cause injury.
• Avoid sitting or stepping on the unit to prevent accidental falls.
• Keep plastic bags (packaging material) away from small children, as they may cling to the nose and mouth and prevent breathing.
• Only purchase authorized electrical parts for installation, service, maintenance, etc. Using unauthorized parts may cause electrical shock or fire.
• Do not add or replace refrigerant with any other type than the specified one. Doing so may cause product damage, burst, and injury.

For further information on installation, operation, and maintenance, refer to the provided Operation Manual and Installation Manual.

Required tools for Installation Works

1. Phillips screw driver
2. Level gauge
3. Electric drill, hole core drill
4. Hexagonal wrench (4 mm)
5. Spanner
6. Pipe cutter
7. Reamer
8. Knife
9. Gas leak detector
10. Measuring tape
11. Thermometer
12. Megameter
13. Multimeter
14. Torque wrench
15. N•m (1.8 kgf•m)
    • 42 N•m (4.3 kgf•m)
    • 55 N•m (5.6 kgf•m)
    • 65 N•m (6.6 kgf•m)
    • 100 N•m (10.2 kgf•m)
16. Hand gloves (for refrigerant circuit repair
17. Vacuum pump
18. Gauge manifold
19. Recovery machine
20. Recovery cylinder)

Explanation of symbols displayed on the indoor unit or outdoor unit.

  WARNING| This symbol shows that this equipment uses a flammable refrigerant with safety A3 group per ISO 817. If the refrigerant is leaked, together with an external ignition source, there is a possibility of fire/explosion.
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CAUTION| This symbol shows that the Installation Manual should be read carefully.
  CAUTION| This symbol shows that service personnel should be handling this equipment with reference to the Installation Manual.
CAUTION| This symbol shows that there is information included in the Operation Manual and/or Installation Manual.

SAFETY PRECAUTIONS

• Read the following “SAFETY PRECAUTIONS” carefully before installation.
• Electrical work and water installation works must be done by licensed electrician and licensed water system installer respectively. Be sure to use the correct rating and main circuit for the model to be installed.
• The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below. Incorrect installation due to ignoring or negligence of the instruction will cause harm or damage, and the seriousness is classifi ed by the following indications.
• Please leave the installation manual with the unit after installation.

 WARNING| This indication shows the possibility of causing death or serious injury.
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 CAUTION| This indication shows the possibility of causing injury or damage to properties only.

The items to be followed are classifi ed by the symbols:

| Symbol with white background denotes item that is PROHIBITED.
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| Symbol with dark background denotes item that must be carried out.

• Carry out test running to confi rm that no abnormality occurs after the installation. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.
• This appliance is not intended for accessibility by the general public.
• If there is any doubt about the installation procedure or operation, always contact the authorized dealer for advice and information.

WARNING

| Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. Any unfit method or using incompatible material may cause product damage, burst and serious injury.
| Do not install outdoor unit near handrail of veranda. When installing outdoor unit at veranda of high rise building, child may climb up to outdoor unit and cross over the handrail and causing accident.
| Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.
| Do not tie up the power supply cord into a bundle by band. Abnormal temperature rise on power supply cord may happen.
| Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
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| Do not sit or step on the unit, you may fall down accidentally.
| Keep plastic bag (packaging material) away from small children, it may cling to nose and mouth and prevent breathing.
| Do not purchase unauthorized electrical parts for installation, service, maintenance and etc.. They might cause electrical shock or fire.
| Do not modify the wiring of outdoor unit for installation of other components (i.e. heater, etc). Overloaded wiring or wire connection points may cause electrical shock or fire.
| Do not pierce or burn as the appliance is pressurized. Do not expose the appliance to heat above 370°C, flame, sparks, or other sources of ignition. Else, it may explode and cause injury or death.
| Do not add or replace refrigerant other than specified type. It may cause product damage, burst and injury etc.
| For electrical work, follow local wiring standard, regulation and this installation instruction. An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.
| Engage dealer or specialist for installation. If installation done by the user is defective, it will cause water leakage, electrical shock or fire.
| •   The refrigerant cycle is completed inside the outdoor unit.

•   Refrigerant piping work is not required.

•   Pump down operation is not also required.

| For refrigeration system work, install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electrical shock or fire.
| Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury.
| Do not use joint cable for outdoor connection cable. Use specified outdoor connection cable, refer to instruction 4 CONNECT THE CABLE TO THE OUTDOOR UNIT and connect tightly for outdoor connection. Clamp the cable so that no external force will be acted on the terminal. If connection or fixing is not perfect, it will cause heat up or fire at the connection.
| Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause fire or electrical shock.
| After completion of installation, confirm there is no leakage of refrigerant gas. It may lead to the risk of fire or explosion when the refrigerant contacts with fire.
| Ventilate the room if there is refrigerant gas leakage during operation. Extinguish all fire sources if present. It may lead to the risk of fire or explosion when the refrigerant contacts with fire.
| Only use the supplied or specified installation parts, else, it may cause unit vibrate loose, water leakage, electrical shock or fire.
| If there is any doubt about the installation procedure or operation, always contact the authorized dealer for advice and information.
| When installing electrical equipment at wooden building of metal lath or wire lath, in accordance with electrical facility standard, no electrical contact between equipment and building is allowed. Insulator must be installed in between.
| Any work carried out on the outdoor unit after removing any panels which is secured by screws, must be carried out under the supervision of authorized dealer and licensed installation contractor.
| Be aware that refrigerants may not contain an odour.
| This unit must be properly earthed. The electrical earth must not be connected to a gas pipe, water pipe, the earth of lightening rod or a telephone. Otherwise there is a danger of electrical shock in the event of an insulation breakdown or electrical earth fault in the outdoor unit.
 CAUTION
| Do not install the outdoor unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire.
| Do not release refrigerant during repairing a refrigeration parts. Take care of the liquid refrigerant, it may cause frostbite.
| Make sure the insulation of power supply cord does not contact hot part (i.e. refrigerant piping) to prevent from insulation failure (melt).
| Do not touch the sharp aluminium fin, sharp parts may cause injury.
| Select an installation location which is easy for maintenance.

Incorrect installation, service or repair of this outdoor unit may increase the risk of rupture and this may result in loss damage or injury and/or property.

| Ensure the correct polarity is maintained throughout all wiring. Otherwise, it will cause electrical shock or fire.
| Installation work.

It may need two or more people to carry out the installation work. The weight of outdoor unit might cause injury if carried by one person.

| Keep any required ventilation openings clear of obstruction.
| Water piping in the occupied space shall be installed in such a way to protect against accidental damage in operation and service.
| Precautions shall be taken to avoid excessive vibration or pulsation to water piping.
| Protect the water piping from accidental rupture due to moving furniture or reconstruction activities.
| •   Must ensure the installation of water pipe-work shall be kept to a minimum. Avoid use dented pipe and do not allow acute bending.

•   Must ensure that water pipe-work shall be protected from physical damage.

PRECAUTION FOR USING R290 REFRIGERANT

pay careful attention to the following points:

 WARNING

|

The mixing of different refrigerants within a system is prohibited.

| Operation, maintenance, repairing and refrigerant recovery should be carried out by trained and certified personnel in the use of flammable refrigerants and as recommended by the manufacturer. Any personnel conducting an operation, servicing or maintenance on a system or associated parts of the equipment should be trained and certified.
| Any part of refrigerating circuit (evaporators, air coolers, AHU, condensers or liquid receivers) or piping should not be located in the proximity of heat sources, open flames, operating gas appliance or an operating electric heater.
| The user/owner or their authorized representative shall regularly check the alarms, mechanical ventilation and detectors, at least once a year, where as required by national regulations, to ensure their correct functioning.
|

A logbook shall be maintained. The results of these checks shall be recorded in the logbook.

|

In case of ventilations in occupied spaces shall be checked to confirm no obstruction.

| Before a new refrigerating system is put into service, the person responsible for placing the system in operation should ensure that trained and certified operating personnel are instructed on the basis of the instruction manual about the construction, supervision, operation and maintenance of the refrigerating system, as well as the safety measures to be observed, and the properties and handling of the refrigerant used.
| The general requirement of trained and certified personnel are indicated as below:

a)    Knowledge of legislation, regulations and standards relating to flammable refrigerants; and,

b)    Detailed knowledge of and skills in handling flammable refrigerants, personal protective equipment, refrigerant leakage prevention, handling of cylinders, charging, leak detection, recovery and disposal; and,

c)    Able to understand and to apply in practice the requirements in the national legislation, regulations and Standards; and,

d)    Continuously undergo regular and further training to maintain this expertise.

| Ensure protection devices, refrigerating circuit and fittings are well protected against adverse environmental effects (such as the danger of water collecting and freezing in relief pipes or the accumulation of dirt and debris).
 CAUTION

| 1. Installation (Space)

•   Must comply with national gas regulations, state municipal rules and legislation. Notify relevant authorities in accordance with all applicable regulations.

•   Must ensure mechanical connections be accessible for maintenance purposes.

•   In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction.

•   When disposal of the product, do follow to the precautions in #12 and comply with national regulations.

•   Always contact to local municipal offices for proper handling.

| 2. Servicing

2-1. Service personnel

•   Any qualified person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry- accredited assessment authority, which authorizes their competence to handle refrigerants safely in accordance with an industry recognized assessment specification.

•   Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.

•   Servicing shall be performed only as recommended by the manufacturer.

•   The system is inspected, regularly supervised and maintained by a trained and certified service personnel who is employed by the person user or party responsible.

•   Ensure refrigerant charge not to leak.

2-2. Work

•   Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimised.

For repair to the refrigerating system, the precautions in #2-2 to #2-8 must be followed before conducting work on the system.

•   Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapour being present while the work is being performed.

•   All maintenance staff and others working in the local area shall be instructed and supervised on the nature of work being carried out.

•   Avoid working in confined spaces. Always ensure away from source, at least 2 meter of safety distance, or zoning of free space area of at least 2 meter in radius.

•   Wear appropriate protective equipment, including respiratory protection, as conditions warrant.

•   Keep all sources of ignition and hot metal surfaces away.

2-3. Checking for presence of refrigerant

•   The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially flammable atmospheres.

•   Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. non sparking, adequately sealed or intrinsically safe.

•   In case of leakage/spillage happened, immediately ventilate area and stay upwind and away from spill/release.

•   In case of leakage/spillage happened, do notify persons down wind of the leaking/spill, isolate immediate hazard area and keep unauthorized personnel out.

| 2-4. Presence of fire extinguisher

•   If any hot work is to be conducted on the refrigerating equipment or any associated parts, appropriate fire extinguishing equipment shall be available at hand.

•   Have a dry powder or CO2 fire extinguisher adjacent to the charging area.

2-5. No ignition sources

•   No person carrying out work in relation to a refrigerating system shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. He/She must not be smoking when carrying out such work.

•   All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which flammable refrigerant can possibly be released to the surrounding space.

•   Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks.

•   “No Smoking” signs shall be displayed.

2-6.Ventilated area

•   Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work.

•   A degree of ventilation shall continue during the period that the work is carried out.

•   The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.

2-7. Checks to the refrigerating equipment

•   Where electrical components are being changed, they shall be fit for the purpose and to the correct specification.

•   At all times the manufacturer’s maintenance and service guidelines shall be followed.

•   If in doubt consult the manufacturer’s technical department for assistance.

•   The following checks shall be applied to installations using flammable refrigerants.

–   The ventilation machinery and outlets are operating adequately and are not obstructed.

–   If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant.

–   Marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected.

–   Refrigerating pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to being corroded or are properly protected against being so corroded.

2-8. Checks to electrical devices

•   Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures.

•   Initial safety checks shall include but not limit to:-

–   That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking.

–   That there are no live electrical components and wiring are exposed while charging, recovering or purging the system.

–   That there is continuity of earth bonding.

•   At all times the manufacturer’s maintenance and service guidelines shall be followed.

•   If in doubt consult the manufacturer’s technical department for assistance.

•   If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with.

•   If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be used.

•   The owner of the equipment must be informed or reported so all parties are advised thereinafter.

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| 3. Repairs to sealed components

•   During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc.

•   If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation.

•   Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections, terminals not made to original specification, damage to seals, incorrect fitting of glands, etc.

•   Ensure that apparatus is mounted securely.

•   Ensure that seals or sealing materials have not degraded such that they no longer serve the purpose of preventing the ingress of flammable atmospheres.

•   Replacement parts shall be in accordance with the manufacturer’s specifications.

NOTE: The use of silicon sealant may inhibit the effectiveness of some types of leak detection equipment.

Intrinsically safe components do not have to be isolated prior to working on them.

| 4. Repair to intrinsically safe components

•   Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the equipment in use.

•   Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere.

•   The test apparatus shall be at the correct rating.

•   Replace components only with parts specified by the manufacturer. Unspecified parts by manufacturer may result ignition of refrigerant in the atmosphere from a leak.

| 5. Cabling

•   Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects.

•   The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.

| 6. Detection of flammable refrigerants

•   Under no circumstances shall potential sources of ignition be used in the searching or detection of refrigerant leaks.

•   A halide torch (or any other detector using a naked flame) shall not be used.

| 7. The following leak detection methods are deemed acceptable for all refrigerant systems.

•   No leaks shall be detected when using detection equipment with a sensitivity of 5 grams per year of refrigerant or better under a pressure of at least 0,25 times the maximum allowable pressure (>0.98MPa, max 3.90MPa). For example, a universal sniffer.

•   Electronic leak detectors may be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.)

•   Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used.

•   Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed and the appropriate percentage of gas (25 % maximum) is confirmed.

•   Leak detection fluids are also suitable for use with most refrigerants, for example, bubble method and fluorescent method agents. The use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.

•   If a leak is suspected, all ignition sources shall be removed/extinguished.

•   If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system. The precautions in #8 must be followed to remove the refrigerant.

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| 8. Removal and evacuation

•   When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, it is important that best practice is followed since flammability is a consideration.

The following procedure shall be adhered to:

• remove refrigerant -> • purge the circuit with inert gas -> • evacuate -> • purge with inert gas -> • open the circuit by cutting. Brazing must not be used.

•   The refrigerant charge shall be recovered into the correct recovery cylinders.

•   The system shall be purged with OFN to render the appliances safe. (remark: OFN = oxygen free nitrogen, type of inert gas)

•   This process may need to be repeated several times.

•   Compressed air or oxygen shall not be used for this task.

•   Purging shall be achieved by breaking the vacuum in the system with OFN and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum.

•   This process shall be repeated until no refrigerant is within the system. (Until the concentration of purge gas is 0.25 LFL or less by the leak detector). ø0.25LFL = 0.525Vol%

•   When the final OFN charge is used, the system shall be vented down to atmospheric pressure to enable work to take place.

•   This operation is absolutely vital if brazing operations on the pipe work are to take place.

•   Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and there is ventilation available.

| 9. Charging procedures

•   In addition to conventional charging procedures, the following requirements shall be followed.

–   Ensure that contamination of different refrigerants does not occur when using charging equipment.

–   Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.

–   Cylinders shall be kept in an appropriate position according to the instructions.

–   Ensure that the refrigerating system is earthed prior to charging the system with refrigerant.

–   Label the system when charging is complete (if not already).

–   Extreme care shall be taken not to over fill the refrigerating system.

•   Prior to recharging the system it shall be pressure tested with OFN (refer to #8).

•   The system shall be leak tested on completion of charging but prior to commissioning.

•   A follow up leak test shall be carried out prior to leaving the site.

•   Electrostatic charge may accumulate and create a hazardous condition when charging and discharging the refrigerant.

To avoid fire or explosion, dissipate static electricity during transfer by grounding and bonding containers and equipment before charging/discharging.

| 10. Decommissioning

•   Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its details.

•   It is recommended good practice that all refrigerants are recovered safely.

•   Re-use of recovered refrigerant is prohibited.

•   It is essential that electrical power is available before the task is commenced.

a)   Become familiar with the equipment and its operation. d) Make sure that cylinder is situated on the scales before recovery

b)   Isolate system electrically. takes place.

c)   Before attempting the procedure ensure that: e) Start the recovery machine and operate in accordance with

•   mechanical handling equipment is available, if required, instructions.

for handling refrigerant cylinders; f) Do not over fill cylinders. (No more than 80 % volume liquid

•   all personal protective equipment and leak detectors are charge).

available and being used correctly; g) Do not exceed the maximum working pressure of the cylinder,

•   the recovery process is supervised at all times by a even temporarily.

competent person; h) When the cylinders have been filled correctly and the process

•   recovery equipment and cylinders conform to the completed, make sure that the cylinders and the equipment

appropriate standards. are removed from site promptly and all isolation valves on the

equipment are closed off.

•   Electrostatic charge may accumulate and create a hazardous condition when charging or discharging the refrigerant.

To avoid fire or explosion, dissipate static electricity during transfer by grounding and bonding containers and equipment before charging/discharging.

| 11. Labelling

•   Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant.

•   The label shall be dated and signed.

•   Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.

| 12. Recovery

•   When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.

•   When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.

•   Ensure that the correct number of cylinders for holding the total system charge are available.

•   All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of refrigerant).

•   Cylinders shall be complete with pressure relief valve and associated shut-off valves in good working order.

•   Recovery cylinders are evacuated and, if possible, cooled before recovery occurs.

•   The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of flammable refrigerants.

•   Make sure the recovery equipment is not a potential ignition source and is suitable for the refrigerant you are using.

•   In addition, a set of calibrated weighing scales shall be available and in good working order.

•   Hoses shall be complete with leak-free disconnect couplings and in good condition.

•   Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release.

Consult manufacturer if in doubt.

•   The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant Waste Transfer Note arranged.

•   Do not mix refrigerants in recovery units and especially not in cylinders.

•   If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant.

•   The evacuation process shall be carried out prior to returning the compressor to the suppliers.

•   Only electric heating to the compressor body shall be employed to accelerate this process.

•   When oil is drained from a system, it shall be carried out safely.

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Attached accessories

Optional accessories

1

It is strongly recommended to install a Base Pan Heater (optional) if the outdoor unit is install in cold climate area. Refer the Base Pan Heater (optional) installation instruction for details of installation.

SELECT THE BEST LOCATION

• If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed.
• For WH-WDG05LE5, WDG07LE5 and WDG09LE5, avoid installations in areas where the ambient temperature may drop below-25°C.
• A protective zone is defi ned for the area close around the product. See section “2 Protective zone”.
• Do not place any obstacles which may cause a short circuit of the discharged air.
• If outdoor unit installed near sea, region with high content of sulphur or oily location (e.g. machinary oil, etc), it lifespan maybe shorten.
• Please follow the table below for water piping specifi cations.

Model

| Water piping between outdoor unit and indoor unit
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Inner diameter| Maximum length| Insulator thickness| Maximum Elevation
WH-WDG05LE5| ø20|

30 m

|

30 mm or more

|

10 m

WH-WDG07LE5| ø25
WH-WDG09LE5

PROTECTIVE ZONE

This outdoor unit is filled with R290(Extremely flammable gas, safety A3 group per ISO 817). Note that this refrigerant has a higher density than air. In case of a refrigerant leak, the leaked refrigerant may accumulate near the ground. Prevent accumulation of refrigerant in any way that is potentially dangerous, explosive or risk suffocation. Prevent refrigerant from entering the building through building openings. Prevent accumulation of refrigerant in the drain grooves. A protective zone is defined around this outdoor unit. There must be no building openings, windows, doors, light shafts, cellar entrances, escape hatches, flat-roof windows or ventilation openings in the protective zone. There must be no ignition sources, such as heat above 360°C, sparks, open flame, plug sockets, light switches, lamps, electrical switches or other permanent ignitions sources, in the protective zone. The protective zone must not extend to adjacent buildings or public traffic areas (boundaries of neighbors, the public road, neighbor’s private roads, subsidence area, depressions, pump shafts, sewers intakes, waste water shafts and so on.). In the protective zone, you are not permitted to make any subsequent structural alterations which infringe the stated rules for the protective zone.

1. Protective zone for ground installation (or fl at-roof installation) at the open areas

2. Protective zone for ground installation in front of a building wall

3. Protective zone for ground installation in a building corner

4. Protective zone for wall installation in front of a building wall
   The protective zone under the product extends to the fl oor.

5. Protective zone for wall installation in a building corner The protective zone under the product extends to the fl oor.

INSTALL THE OUTDOOR UNIT

DIMENSION DIAGRAM

It is advisable to avoid more than 2 blockage directions. For better ventilation & multiple-outdoor installation, please consult authorized dealer/specialist.

Top view

Bottom view

Rc 1″

|

88.2 N•m

Water outlet port

After selecting the best location, start installation according to Installation Diagram.

1. When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand fi rmly with bolt or nails.
2. When installing to a concrete or solid surface, use M10 or a W 3/8 bolts and nuts to secure the unit. Ensure that it installed upright on a horizontal plane. (Use an anchor bolt for the installation as shown in the diagram below.)

DISPOSAL OF OUTDOOR UNIT DRAIN WATER

• When a Drain elbow 1 is used, please ensure to follow below:
  • the unit should be placed on a stand which is taller than 50 mm.
  • cover the ø32mm holes with Rubber cap 2 (refer to illustration below).
  • use a tray (fi eld supply) when necessary to dispose the outdoor unit drain water.
• If the unit is used in an area where temperature falls below 0°C for 2 or 3 consecutive days, it is recommended not to use the Drain elbow 1 and Rubber cap 2, for the drain water freezes and the fan will not rotate.

Pressure relief valve drainage pipe-work

• Use a drain hose with inner diameter of 15mm.
• The hose must be installed in a continuously downward direction and left open to the frost-free atmosphere.
• If drain hose is long, use a metal support fi xture along the way to eliminate the wavy pattern of drain hose.
• Water will drip from this hose, therefore the outlet of this hose must be installed in an area where the outlet cannot become blocked.
• Do not insert this hose into sewage or drain pipe that may generate ammonia gas, sulfuric gas, etc.
• If necessary, use a hose clamp to tighten the hose at drain hose connector to prevent it from leaking.

CONNECT THE CABLE TO THE OUTDOOR UNIT

(FOR DETAIL REFER TO WIRING DIAGRAM AT UNIT)

1. Attach the discharge grille (left side) 3 for safety before connecting the cable.
2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed fl exible cable (see below table), type designation 60245 IEC 57 or heavier cable. Sheath diameter of connecting cable shall be within specifi cation (see below table) to fi t cable gland.
3. Route the cable as follows
   • 1 Locally procured cabtyre cables with the specifi ed diameter.
   • 2 Must be fastened with the specifi ed torque Viewpoint of gas intrusion prevention.

1. Remove the front plate (Fig. 4-1)
2. Remove the terminal cover and cable gland cap (Fig. 4-2)
3. Insert the cabtyre cable *1 (Fig. 4-3, 4-4) (Pulled in from the rear panel and inserted from the bottom of the electric controller BOX)
4. Connect to terminal block (Fig. 4-5)
5. Fasten the cable gland *2 (Fig. 4-4)
6. Set the terminal cover *2 (Fig. 4-2)
7. Set the front plate (Fig. 4-1)

PIPE INSULATION

1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.

INSTALL THE DISCHARGE GRILLE

1. Remove the 3 screws fastened to the cabinet front plate. (Fig. 6-1)
2. Insert 4 claws of the discharge grille (right side) 4 and fasten the 3 screws. (Fig. 6-2)

CAUTION: Make sure to install the discharge grille to the outdoor unit before powering ON to protect againts a rotating fan.

CAUTION: If cleaning of the outdoor unit is necessary during installation or servicing, do not clean the outdoor unit with any hydrocarbon-based solvent.
REFRIGERANT
This AIR-TO-WATER HEATPUMP contains and operates with refrigerant R290. THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED
BY QUALIFIED PERSONNEL.
Refer to National, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation, maintenance, and/or service of this product. WH-WDG05LE5, WH-WDG07LE5, WH-WDG09LE5

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