About the documentation
Meaning of warnings and symbols
For the installer
- General
- Installation site
- Refrigerant
- Brine
- Water
- Electrical
Provide adequate measures to prevent the unit from being used as a shelter by small animals. DO NOT use the unit's automatic pump down function, which allows you to collect all the refrigerant from the system in the outdoor unit. The unit is factory charged with refrigerant and depending on pipe sizes and pipe lengths, some systems require additional refrigerant charge.
The ambient temperature inside the unit can become much higher than that of the room, e.g. The use and installation of the application MUST comply with the safety and environmental precautions specified in the applicable legislation. NEVER squeeze bundled cables and make sure they DO NOT come into contact with pipes and sharp edges.
A subset of the latest technical data is available on Daikin's regional website (publicly accessible).
Installer reference guide at a glance
Make sure the user has the printed documentation and ask him/her to save it for future reference. Latest revisions of the accompanying documentation may be available on the regional Daikin website or through your dealer. The full set of latest technical data is available on the Daikin Business Portal (authorization required).
Preparation What you need to do and know before you go on site Installation What you need to do and know to install the system Configuration What you need to do and know to configure the system. This chapter describes what to do after the box with the indoor unit is delivered on site. Bring the packaged unit as close as possible to the final installation position to avoid damage during transportation.
Indoor unit
To unpack the indoor unit
To remove the accessories from the indoor unit
Operation range
Preparing the installation site
Installation site requirements of the indoor unit
In locations where a mineral oil mist, spray or vapor may be present in the atmosphere. DO NOT place objects under the indoor and/or outdoor unit that may get wet. Otherwise, condensation on the unit or refrigerant piping, air filter dirt, or drain blockage may cause dripping and items under the unit may become dirty or damaged.
Install the unit at least 1.8 m from the floor and remember the following requirements for distances from walls and ceiling:.
Preparing refrigerant piping
Refrigerant piping requirements
Outside diameter (Ø) Temper grade Thickness (t)(a). a) Depending on the applicable legislation and the maximum working pressure of the unit (see "PS High" on the unit nameplate), a larger pipe thickness may be required.
Refrigerant piping insulation
Preparing electrical wiring
About preparing electrical wiring
Secure the electrical wiring with cable ties so that the cables DO NOT come into contact with sharp edges or pipes, especially on the high pressure side. DO NOT use taped wires, stranded conductor wires, extension cords, or connections from a star system. All wiring MUST be performed by a licensed electrician and MUST comply with applicable law.
All components sourced on site and all electrical construction MUST comply with applicable legislation. This chapter describes what you need to do on site and know to install the system. For the installation of the outdoor unit (mounting the outdoor unit, connecting the refrigerant pipe to the outdoor unit, filling refrigerant, connecting the electrical wiring to the outdoor unit...), see the installation manual of the outdoor unit unit.
Opening the indoor unit
- To remove the front panel
- To re-install the front panel
- To remove the front grille
- To re-install the front grille
- To remove the electrical wiring box cover
- To open the service cover
When installing, maintaining or servicing the system, wear appropriate personal protective equipment (protective gloves, safety glasses, etc.). 5 Place both hands under the center of the front grille, push it up and then towards you. 3 Open the wiring cover by pulling the protruding part at the top of the cover.
5 To reinstall the cover, first hook the bottom tab on the electrical wiring box and slide the cover into the top 2 tabs.
Installing the indoor unit
- Precautions when installing the indoor unit
- To install the mounting plate
- To drill a wall hole
- To remove the pipe port cover
- To provide drainage
A Mounting plate for class 20~35 a Recommended mounting plate mounting locations b Pipe port cover pocket. For walls that contain a metal frame or sheet metal, use a wall-embedded pipe and wall cover in the through-hole to prevent possible heat, electric shock, or fire. 1 Drill a 65 mm through hole in the wall with a downward slope outwards.
4 After completing the wiring, refrigerant pipe and drain pipe, DO NOT forget to seal the gap with putty. To connect the pipes on the right side, right-bottom, left-side or left-bottom, the pipe port cover MUST be removed. DO NOT use tweezers to remove the tube port cover as this will damage the front grille.
If drain hose extension or integrated drain pipes are required, use suitable parts that match the front end of the hose. DO NOT forget to use a heat insulating tube on the inside of the extension hose. 1 Insert the drain hose into the drain pipe as shown in the figure below so that it DOES NOT pull out of the drain pipe.
For left side piping, remove the right side piping and install it on the left side. 1 Attach the drain hose with vinyl adhesive tape to the end of the coolant pipes. 2 Remove the drain plug on the left side and place it on the right side.
3 Place the drain hose on the left side, remembering to tighten it with the fixing screw; otherwise, water leakage may occur.
Connecting the refrigerant piping
- About connecting the refrigerant piping
- Precautions when connecting the refrigerant piping
- Guidelines when connecting the refrigerant piping
- Pipe bending guidelines
- To flare the pipe end
- To connect the refrigerant piping to the indoor unit
Use only installation tools (e.g. manifold gauge kits) used exclusively for R32 installations to withstand the pressure and to prevent foreign matter (e.g. mineral oils and moisture) from entering the system. Protect the pipes as described in the following table to prevent dirt, liquid or dust from entering the pipes. When you need to add additional refrigerant, it is recommended to open the refrigerant stop valve after filling.
Coat the inner surface of the flare with ether oil or ester oil when attaching a flare nut. ALWAYS use a wrench and torque wrench together to tighten the flare nut when connecting piping. All pipe bends should be as smooth as possible (bending radius should be 30~40mm or larger).
2 Remove the edges with the cut surface facing down so that the shavings do NOT enter the tube. 3 Remove the cone nut from the stop valve and install the cone nut on the pipe.
Connecting the electrical wiring
- About connecting the electrical wiring
- Precautions when connecting the electrical wiring
- Guidelines when connecting the electrical wiring
- Specifications of standard wiring components
- To connect the electrical wiring to the indoor unit
- To connect optional accessories (wired user interface, central user interface, wireless adapter, etc.)
If the power cord is damaged, it MUST be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard. Keep the connecting wiring away from copper pipes without thermal insulation, as such pipes will be very hot. If stranded conductor wires are used, install a round crimp terminal on the end of the wire.
Place the round clamp terminal on the wire up to the covered part and secure the terminal with the appropriate tool. The ground wire between the wire holder and the terminal must be longer than the other wires. Electrical work must be carried out in accordance with the installation manual and national electrical wiring regulations or practices.
3 Route the interconnect cable from the outdoor unit through the entry hole in the wall, through the back of the indoor unit, and through the front. Note: In case the interconnect cable has been removed beforehand, cover the ends with insulating tape. To avoid any electrical interference, the distance between the two cables must ALWAYS be at least 50 mm.
6 Match the colors of the wires with the numbers of the terminals on the terminal blocks of the indoor unit and firmly screw the wires into the corresponding terminals. 9 Pull the wires to make sure they are securely attached, then hold the wires with the wire holder. 10 Form the wires so that the service cover fits snugly, then close the service cover.
2 Attach the connection cable to the S21 connector and draw the wire harness as shown in the following figure. 3 Replace the electrical wiring box cover and wrap the wire harness around it as shown in the previous figure.
Finishing the indoor unit installation
To insulate the drain piping, refrigerant piping and interconnection cable
To pass the pipes through the wall hole
To fix the unit on the mounting plate
2 Press the lower frame of the unit with both hands to place it on the lower hooks of the mounting plate. Note: Take care that the interconnect cable does NOT get caught in the indoor unit. 3 Press the bottom edge of the indoor unit with both hands until it is firmly caught by the hooks of the mounting plate.
Be careful NOT to damage any of the surrounding parts when cutting the address jumper. Result: The indoor unit cover will be opened and closed to set the reference position.
Checklist before commissioning
This chapter describes what you need to do and know to get the system up and running after it is installed.
To perform a test run
To perform a test run in winter season
Inform the user that he can find the complete documentation at the URL mentioned earlier in this manual. Explain to the user how to operate the system properly and what to do in case of problems. DO NOT try to disassemble the system yourself: dismantling of the system, treatment of the coolant, oil and other parts MUST comply with applicable legislation.
The wiring diagram is delivered with the unit installed inside the outdoor unit (underside of the top panel).
Unified wiring diagram legend
All international, European, national and local guidelines, laws, regulations and/or codes relevant and applicable to a particular product or domain. Instruction manual specified for a particular product or application, explaining how to install, configure and maintain it. Instruction manual specified for a particular product or application, explaining (if relevant) how to install, configure, operate and/or maintain the product or application.
Labels, manuals, information sheets and equipment supplied with the product and which must be installed according to the instructions in the accompanying documentation. Equipment made or approved by Daikin that can be combined with the product according to the instructions in the accompanying documentation. Equipment NOT made by Daikin that can be combined with the product according to the instructions in the accompanying documentation.
