Airwell OU-PSINV-70TH Installation Instructions Manual

Dc inverter air conditioner

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■ R410A Models

Indoor Units

Indoor Unit Type

4-Way Air Discharge

4WK

Semi-Concealed

Wall-Mounted

Ceiling-Mounted

Concealed-Duct

Outdoor Units

* Refrigerant R410A is used in the outdoor units.

Optional Controllers

Remote Controller

Wireless Remote Controller (For 4WK type)

Wireless Remote Controller (For C type)

Wireless Remote Controller (For D type)

Wireless Remote Controller (For HW type)

Simpliﬁ ed Remote Controller

Remote Sensor

System Controller

Schedule Timer

Big_PAC_eng1.indd Sec1:a

INSTALLATION INSTRUCTIONS

– DC INVERTER Air Conditioner –

for Refrigerant R410A

IU-PSINV-

4WK18R

4WK25R

4WK36R

IU-PSINV-

HW18R

HW25R

IU-PSINV-

C18R

C25R

C36R

IU-PSINV-

D18R

D25R

D36R

OU-PSINV-70TH, OU-PSINV-90TH

NRCT-FLR

AWAC-RCIRA-FL

AWAC-RCIRD-FL

AWAC-RCIRC-FL

AWAC-RCIRE-FL

NRCB-FLR

NSDR

NRSC-FLR

NWTM-FLR

IU-PSINV-

4WK48R

IU-PSINV-

C48R

IU-PSINV-

D48R

2009/09/08 14:56:33

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Summary of Contents for Airwell OU-PSINV-70TH

Page 1 IU-PSINV- Concealed-Duct D18R D25R D36R D48R Outdoor Units Outdoor Units OU-PSINV-70TH, OU-PSINV-90TH * Refrigerant R410A is used in the outdoor units. Optional Controllers Remote Controller NRCT-FLR Wireless Remote Controller (For 4WK type) AWAC-RCIRA-FL Wireless Remote Controller (For C type) AWAC-RCIRD-FL...
Page 2: Important
IMPORTANT! When Transporting Please Read Before Starting Be careful when picking up and moving the indoor and out- door units. Get a partner to help, and bend your knees when This air conditioning system meets strict safety and oper- lifting to reduce strain on your back. Sharp edges or thin alumi- ating standards.
Page 3: Check Of Density Limit
Check of Density Limit The standards for minimum room volume are as follows. (1) No partition (shaded portion) The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its density will not exceed a set limit. The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to protect the ozone layer.
Page 4: Precautions For Installation Using New Refrigerant
Precautions for Installation Using New R407C tools Refrigerant Item compatible Remarks tool? with 1. Care regarding tubing R410A? 1-1. Process tubing Manifold Types of refrigerant, ● Material: Use C1220 phosphorous deoxidized copper gauge refrigerating machine oil, specified in JIS H3300 “Copper and Copper Alloy Seamless and pressure gauge are Pipes and Tubes”.
Page 5: Table Of Contents
CONTENTS Page Page ■ Concealed-Duct Type (D Type) ..... 26 IMPORTANT ........2 Please Read Before Starting 3-18.
Page 6 Page Page 9. HOW TO INSTALL THE CEILING PANEL ... . . 42 11. HOW TO INSTALL WIRELESS REMOTE CONTROLLER RECEIVER ..... . . 69 ■...
Page 7: General
1. GENERAL Table 1-1 (4-Way Air Discharge Semi-Concealed 4WK Type) Part Name Figure Q’ty Remarks This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of Full-scale instructions for the indoor and outdoor units and make sure all Printed on container box installation accessory parts listed are with the system before beginning.
Page 8 Table 1-3 (Ceiling-Mounted C Type) Table 1-5 (Outdoor Unit) Part Name Figure Q’ty Remarks Name Figure Q’ty Reducing Joint Tube For temporarily Special (ø19.05 → ø25.4) suspending indoor unit washer from ceiling Joint Tube (ø19.05) Drain For drain hose joint insulator For gas and liquid tube Flare insulator...
Page 9: Tubing Size
1-5. Tubing Size Simultaneous operation multi (Twin, Triple, Double-Twin) NOTE Because the indoor units run simultaneously, install them within the same room. Table 1-6 Table for Managing Tubing Length and Height Differential Symbol Actual length Item Contents Twin Triple Double-Twin Maximum One-way length of tubing from L + 1...
Page 10 Table 1-7 Connection Tube Sizes (Twin, Triple, Double-Twin) Double-Twin distribution tube (L1, L2) Indoor unit connection tube Main tubing (L) Total type capacity of indoor unit connected after ( 1, 2, 3, 4) the branch Type capacity of indoor unit 36 –...
Page 11: Optional Distribution Joint Kits
1-6. Optional Distribution Joint Kits CAUTION ● NRF-DL16R: Cooling capacity after distribution is 16.0 kW 1. This unit requires no additional refrigerant charge up to tubing length 30 m. In case of more than 30 m, additional (54,600 BTU/h) or less. refrigerant charge is required.
Page 12: Installing Distribution Joint Kit (For Twin & Double-Twin) (Nrf-Dl16R & Nrf-D1668R)
● Cut at a position that is as far away as possible from the NRF-DL28R (for simultaneous Triple) dowel pin. If the distribution joint will be cut before use, Dowel pin cut on the line marked “cutting location” in the figure below. position Dowel pin Cutting location...
Page 13: Installing Distribution Joint Kit (For Triple) (Nrf-Dl28R)
1-8. Installing Distribution Joint Kit (for Triple) (NRF-DL28R) ● Check the system combination before installing the distribution joints. ● Three indoor units must be installed within the same room. ● Use the supplied tube connectors to adjust the tube sizes of the distribution joints.
Page 14: Selecting The Installation Site
2. SELECTING THE INSTALLATION SITE Ceiling-Mounted Type CAUTION Ceiling ● When moving the unit during or after unpacking, make sure to lift it by holding its lifting lugs. Do not exert any pressure on other parts, especially the refrigerant Wall piping, drain piping and flange parts.
Page 15: Air Discharge Chamber For Top Discharge
Installation space Air intake Install the outdoor unit with a sufficient space around the Air intake outdoor unit for operation and maintenance. (1) Obstructions on the left side, right side and rear side (Front side and above the unit are opened). (Fig. 2-5) Air discharge Air discharge Anchor bolts...
Page 16: Precautions For Installation In Heavy Snow Areas
2-5. Precautions for Installation in Heavy Snow Hole-in-anchor Concrete Insert Hole-in-plug Areas (1) The platform should be higher than the max. snow depth. (Fig. 2-10) (2) The 2 anchoring feet of the outdoor unit should be used for the platform, and the platform should be installed beneath the air intake side of outdoor unit.
Page 17: Placing The Unit Inside The Ceiling
3-3. Placing the Unit Inside the Ceiling 3-4. Installing the Drain Pipe (1) When placing the unit inside the ceiling, determine the <4WK Type > pitch of the suspension bolts using the supplied full-scale (1) Prepare a standard hard PVC pipe (O.D. 32 mm) for the installation diagram.
Page 18: Checking The Drainage
■ Wall-Mounted Type (HW Type) CAUTION ● If it is necessary to increase the height of the drain pipe, 3-6. Removing the Rear Panel from the Unit the section directly after the connection port can be (1) Remove the set screws used to fasten the rear panel to the raised a maximum of 64 cm.
Page 19: Attaching The Rear Panel Onto The Wall
(3) Make sure the panel is flush against the wall. Any space Indoor Outdoor side side between the wall and unit will cause noise and vibration. b) If the Wall is Brick, Concrete or Similar Drill 4.8 mm dia. holes in the wall. Insert Rawl plugs for appropriate mounting screws.
Page 20: Preparing The Tubing
Attaching the grille Raising the clamp to lift up the indoor unit will facilitate this work. (Fig. 3-28) (1) Close the flap. Clamp (2) Keep the grille installation tabs aligned with the top portion of the grille, and reinstall the lower portion of the grille. Fit the installation tabs into the grooves and press the lower portion of the grille back into its original position.
Page 21: Installing The Drain Hose
(2) After performing a leak test, wrap the refrigerant tubing and drain hose together with insulating tape (Fig. 3-31). Then fit the tubing into the tubing storage space in the rear of the indoor unit and clamp in place. (3) Adjust the indoor unit so that it is securely mounted on the rear panel.
Page 22: Ceiling-Mounted Type (C Type)
■ Ceiling-Mounted Type (C Type) 3-13. Required Minimum Space for Installation and Air intake Service (1) Dimensions of suspension bolt pitch and unit Ceiling side Length Type 1125 1180 27.5 27.5 36, 48 1540 1595 (Suspension bolt pitch) Unit: mm Unit: mm Fig.
Page 23: Suspending The Indoor Unit
(4) Wall and ceiling side opening position WARNING Figure shows view from front. It is important that you use extreme care in supporting the indoor unit from the ceiling. Ensure that the ceiling is strong enough to support the weight of the unit. Before Ceiling hanging the ceiling unit, test the strength of each attached suspension bolt.
Page 24: Duct For Fresh Air
Suspension bolt PVC pipe (locally purchased) (field supply) OUTSIDE Wall INSIDE Washer (field supply) PVC pipe Unit Slight Washer (supplied) angle Double nut (field supply) Cut at slight angle Fig. 3-44 Fig. 3-49 3-15. Duct for Fresh Air There is a duct connection port (knock-out hole) at the right-rear Ceiling of the top panel of the indoor unit for drawing in fresh air.
Page 25: Installing The Drain Pipe
3-17. Installing the Drain Pipe * If the drain hose is routed through the left side, refer to Fig. 3-51, and follow the procedure above to install the hose. ● Prepare standard PVC pipe for the drain and connect it to Reattach the rubber stopper removed earlier onto the right the indoor unit drain pipe with the supplied hose clamps to side.
Page 26: Concealed-Duct Type (D Type)
■ Concealed-Duct Type (D Type) 3-18. Required Minimum Space for Installation and Service ● This air conditioner is usually installed above the ceiling so A (Suspension bolt pitch) Electrical that the indoor unit and ducts are not visible. Only the air component box intake and air outlet ports are visible from the unit bottom.
Page 27: Suspending The Indoor Unit
3-19. Suspending the Indoor Unit Suspension bolt Depending on the ceiling type: • Insert suspension bolts (Fig. 3-58) Hexagonal nut • Use existing ceiling supports or construct a suitable support (Fig. 3-59). Hole-in-anchor Double nuts Concrete Insert Hole-in-plug Fig. 3-61 ●...
Page 28: Installing The Drain Pipe
3-20. Installing the Drain Pipe 30 cm or less (1) Prepare standard hard PVC pipe (O.D. 32 mm) for the 50 cm or less drain and use the supplied hose band to prevent water Good leaks. The PVC pipe must be purchased separately. The transparent drain part on the unit allows you to check drainage.
Page 29: Increasing The Fan Speed
■ How to read the diagram 3-22. Increasing the Fan Speed If external static pressure is too great (due to long extension The vertical axis is the external static pressure (Pa) while of ducts, for example), the airflow volume may drop too low at the horizontal axis represents the airflow (m /minute).
Page 30: When Installing The Indoor Unit
3-23. When Installing the Indoor Unit Confirm that the indoor unit should be installed in a horizontal position. Use the level gauge or vinyl tube and check every four corner of the unit is in horizontal. If the air outlet duct flange is positioned with downward gradient, there is in danger of water splash or drainage.
Page 31: Supplement On Drain Piping
■ SUPPLEMENT ON DRAIN PIPING 1. Drain hose installation Hose band Drain port (supplied) Hard PVC socket (VP25) (Drainage check section Soft PVC socket on drain port, transparent, Hard PVC pipe ABS resin) Drain hose (VP25 fi eld supplied) (supplied) Indoor unit Bead Do not use adhesive here.
Page 32: How To Install The Outdoor Unit
4-2. Drainage Work 4. HOW TO INSTALL THE OUTDOOR UNIT Follow the procedure below to ensure adequate draining for the outdoor unit. 4-1. Installing the Outdoor Unit ● For the drain port dimensions, refer to Fig. 4-1. ● Use concrete or a similar material to make the base, and ●...
Page 33: Electrical Wiring
5-2. Recommended Wire Length and Wire Diameter for Power Supply System Outdoor unit (3-phase) (A) Power supply Time delay fuse or circuit Wire size Max. length capacity OU-PSINV-70TH 14 mm 116 m 15 A OU-PSINV-90TH 14 mm 96 m 20 A Indoor unit...
Page 34: Wiring System Diagrams
5-3. Wiring System Diagrams (for 3-phase outdoor unit: 4WK, HW, C, D Types) Indoor unit (No. 1) Power supply Outdoor unit 220 – 240 V, ~ 50 Hz INV unit Ground Power supply 380 – 415 V, 3N, ~ 50/60 Hz Remote controller Ground...
Page 35 CAUTION (1) When linking the outdoor units in a network (S-net link system), disconnect the terminal extended from the short plug (CN003, 2P Black, location: right bottom on the outdoor main control PCB) from all outdoor units except any one of the outdoor units.
Page 36: How To Install The Timer Remote Controller (Optional Part)
(5) Use shielded wires for inter-unit control wiring (c) and 6. HOW TO INSTALL THE TIMER REMOTE ground the shield on one side, otherwise misoperation CONTROLLER (OPTIONAL PART) from noise may occur. (Fig. 5-4) Connect wiring as shown in Section “5-3. Wiring System N OT E Diagrams”.
Page 37: Connecting Tubing Between Indoor And Outdoor Units
7-2. Connecting Tubing Between Indoor and NOTE Outdoor Units A good flare should have the following characteristics: ● inside surface is glossy and smooth (1) Preparing the Tubing. ● edge is smooth ● The tubing of the gas main has a diameter of ø25.4, but ●...
Page 38: Insulating The Refrigerant Tubing
● 4 Out Bottom In order to prevent damage to the flare caused by over- tightening of the flare nuts, use the table above as a guide when tightening. Flare Process ● When tightening the flare nut on the liquid tube, use an adjustable wrench with a nominal handle length of 200 mm.
Page 39: Taping The Tubes
Taping the ﬂ are nuts 7-4. Taping the Tubes Wind the white insulation tape around the flare nuts at the gas (1) At this time, the refrigerant tubes (and electrical wiring tube connections. Then cover up the tubing connections with if local codes permit) should be taped together with the flare insulator, and fill the gap at the union with the supplied armoring tape in 1 bundle.
Page 40: Leak Test, Evacuation And Additional Refrigerant Charge
8. LEAK TEST, EVACUATION AND Manifold valve ADDITIONAL REFRIGERANT CHARGE Perform an air-tightness test for this package A/C. Check that there is no leakage from any of the connections. Pressure gauge Air and moisture in the refrigerant system may have Charge hose undesirable effects as indicated below.
Page 41: Evacuation
8-2. Evacuation Manifold valve Be sure to use a vacuum pump that includes a function for prevention of back-flow, in order to prevent back-flow of pump oil into the unit tubing when the pump is stopped. ● Perform vacuuming of the indoor unit and tubing. Pressure Connect the vacuum pump to the gas tube valve and apply gauge...
Page 42: How To Install The Ceiling Panel
(2) Removing the corner cover 9. HOW TO INSTALL THE CEILING PANEL a) Slide the corner cover to the direction shown by the arrow 1 to remove the corner cover. (Fig. 9-6) ■ 4-Way Air Discharge Semi-Concealed Type (4WK Type) Checking the unit position (1) Check that the ceiling hole is within this range: 860 ×...
Page 43: Wiring The Ceiling Panel
(4) Check that the panel is attached tightly to the ceiling. 9-3. Wiring the Ceiling Panel ● At this time, make sure that there are no gaps between the (1) Open the cover of the electrical component box. unit and the ceiling panel, or between the ceiling panel and (2) Connect the 7P wiring connector (red) from the ceiling the ceiling surface.
Page 44: Checking After Installation
9-7. Adjusting the Auto Flap Hole for ceiling The air-direction louver on the ceiling panel outlet can be panel hook adjusted as follows. ● Adjust the louver to the desired angle using the remote controller. The louver also has an automatic air-sweeping mechanism. N OT E ●...
Page 45: Test Run
■ 4WK, C, D Types 10. TEST RUN 10-2. Caution 10-1. Preparing for Test Run ● Before attempting to start the air conditioner, check the ● This unit may be used in a single-type refrigerant system where 1 outdoor unit is connected to 1 indoor following: unit, and also in a system where 1 outdoor unit is (1) All loose matter is removed from the cabinet especially...
Page 46: Items To Check Before The Test Run
10-4. Items to Check Before the Test Run 10-6. Precautions ● Request that the customer be present when the test run is (1) Turn the remote power switch ON at least 12 hours in performed. At this time, explain the operation manual and advance in order to energize the crank case heater.
Page 47 Big_PAC_eng.indb 47 Big_PAC_eng.indb 47 2009/08/26 16:33:19 2009/08/26 16:33:19...
Page 48: System Control
10-8. System Control 10-8-2. Basic wiring diagram 2 Group control (when a central control device is not used) System control refers to the link wiring connection for control of ● simultaneous-operation multi systems, group control, and main- Simultaneous-operation multi system sub remote controller control.
Page 49 (Wiring procedure) 10-8-3. Setting the outdoor unit system addresses (1) Connect the remote controller to the indoor unit remote For basic wiring diagram 2 (Set the system addresses: 1, 2, 3...) controller wiring terminal plate (1, 2). (Remote controller Outdoor unit control PCB 8 –...
Page 50 10-8-4. Automatic address setting using the remote 10-8-6. Main-sub remote controller control controller Control using 2 remote controller switches When the outdoor unit shown in “10-8-2. Basic wiring diagram Main-sub remote controller control refers to the use of 2 remote 2”...
Page 51: Hw Type
■ HW Type 10-10. Test Run Procedure 10-9. Caution Recheck the items to check (See 10-11) before the test run. ● This unit may be used in a single-type refrigerant system where 1 outdoor unit is connected to 1 indoor unit, and also in a system where 1 outdoor unit is connected to multiple indoor units (maximum 4).
Page 52: Preparation For Test Run
10-12. Preparation for Test Run 10-13. Test Run Using the control unit 10-12-1. Switching the temperature sensor (1) Change the indoor control unit switch from “ON” → “TEST”. ● Temperature sensors are contained in the indoor unit (The outdoor unit will not operate for 3 minutes after the and wireless remote controller.
Page 53 Indoor unit control PCB 2 HP Varistor (black) VA002 Fuse (0.5A) CHK (2P plug) SW103 TEST 2P connector (brown) 2P connector (blue) 3 HP Fuse (0.5A) 2P connector (blue) 2P connector (brown) TEST SW103 Varistor (black) VA002 CHK (2P plug) Outdoor unit control PCB 8 –...
Page 54: Corrections
10-15. Table of Self-Diagnostic Functions and Corrections Cause Wired remote controller Indoor unit Group connection Correction display receiver lamp 1:1 connection (Single type) (Simultaneous multi (Field supply) system) Nothing is Nothing is • Indoor operation switch is OFF. • Same at left. •...
Page 55: System Control
10-16. System Control (Wiring procedure) (1) Set the No. 1 wall-mounted indoor unit so that it can be System control refers to the link wiring connection for control of operated by the wireless remote controller. (This is set at simultaneous-operation multi systems, group control, and main- the time of shipment.) sub remote controller control.
Page 56 10-16-2. Basic wiring diagram 2 (Wiring procedure) Group control (when a central control device is not used) (1) Set the No. 1 wall-mounted indoor unit so that it can be operated by the wireless remote controller. ● A maximum of 8 indoor units can be connected to a single (This is set at the time of shipment.) remote controller.
Page 57 10-16-3. Setting the outdoor unit system addresses 10-16-4. Automatic address setting from the outdoor unit For basic wiring diagram 2 (Set the system addresses: 1, 2,...) When there are multiple outdoor units as shown in basic wiring diagram 2 Outdoor unit control PCB 8 –...
Page 58: 4Wk, C, D Types (For Link Wiring)
■ 4WK, C, D Types (for Link Wiring) 10-16-6. Indoor unit address setting ● If multiple single-type units are installed in the same room, 10-17. Caution the addresses can be set to prevent signal interference. This unit may be used in a single-type refrigerant system By coordinating the numbers of the indoor unit (wireless where 1 outdoor unit is connected to 1 indoor unit, and also PCB) and remote controller addresses, up to 6 indoor units...
Page 59: Test Run Procedure
10-18. Test Run Procedure 10-19. Items to Check Before the Test Run (1) Turn the remote power switch ON at least 12 hours in Recheck the items to check (See 10-19) advance in order to energize the crank case heater. before the test run.
Page 60: Table Of Self-Diagnostic Functions And Corrections (4Wk, C, D Types)
10-21. Table of Self-Diagnostic Functions and Corrections (4WK, C, D Types) Cause Wired remote Indoor unit controller Correction Group connection and simultaneous-operation multi receiver lamp display system • Remote controller is not connected with indoor unit Connect the remote controller correctly. Turn ON the Nothing is Nothing is correctly.
Page 61 10-22. Automatic Address Setting Automatic address setting from the outdoor unit (4WK, C, D Types) 10-22-1. Basic wiring diagram Case 1 ● Link wiring ● If the power can be turned ON separately for the indoor and outdoor units in each system, the indoor unit addresses can NOTE be set without running the compressor.
Page 62 Automatic address setting using the remote controller 10-22-2. Setting outdoor unit system addresses Case 3 For the basic wiring diagram (Set the system addresses: 1, 2, 3...) ● If the power can be turned ON separately for the indoor and Outdoor unit control PCB 8 –...
Page 63 10-22-3. Checking indoor unit addresses Indoor unit control PCB Use the remote controller to check the addresses of the indoor 2 HP Varistor (black) units. Press and hold the button and button for 4 VA002 seconds or longer (simple settings mode, “ALL” appears on the remote controller).
Page 64 10-24. Test Run Procedure Recheck the items to check (See 10-11) before the test run. Check the combination (wiring) of (See 10-26-1) indoor and outdoor units. Is system “single-type”? (1 indoor unit is connected to 1 outdoor unit) Turn ON Are multiple outdoor units the indoor used?
Page 65 10-25. Table of Self-Diagnostic Functions and Corrections (HW Type) Cause Wired remote Indoor unit controller Correction Group connection and simultaneous-operation multi receiver lamp display system • Remote controller is not connected with indoor unit Connect the remote controller correctly. Turn ON the Nothing is Nothing is correctly.
Page 66: Automatic Address Setting
10-26. Automatic Address Setting Outdoor unit control PCB 8 – 10 HP 10-26-1. Basic wiring diagram System address rotary switch (Set to “0” at time of shipment) ● Link wiring System address rotary switch NOTE ● A terminal plug (black) is attached to each of the outdoor unit control PCBs.
Page 67 Automatic address setting from the outdoor unit (HW type) 10-26-3. Checking indoor unit addresses (1) Turn on the indoor and outdoor unit power for refrigerant Use the remote controller to check the addresses of the indoor system 1. units. Press and hold the button and button for 4 Press and hold the automatic address setting button...
Page 68: Caution
Installing the Remote Controller 10-27. Caution for Pump Down ● If the remote controller is to be installed onto a wall or Pump down means refrigerant gas in the system is returned other surface for use, first place the remote controller in the to the outdoor unit.
Page 69: How To Install Wireless Remote Controller Receiver
C O N T I E N E R E F R I G E R A N T E R 4 1 0 A Made in Japan Tabulation of Various data OU-PSINV-70TH OU-PSINV-90TH 380 - 415 V ~ 50 / 60 Hz 7.60 kW, 12.5 A...
Page 70: Appendix
<How to clean the filter> 13. APPENDIX 1. Remove the air filter from the air intake grille. 2. Use a vacuum cleaner to remove light dust. If there is 13-1. 4-Way Air Discharge Semi-Concealed Type (4WK Type) sticky dust on the filter, wash the filter in lukewarm, soapy water, rinse it in clean water, and dry it.
Page 71: Concealed Duct Type (D Type)
■ Troubleshooting 13-2. Concealed Duct Type (D Type) If your air conditioner does not work properly, first check the ■ Name of Parts (Indoor Unit) following points before requesting service. If it still does not work properly, contact your dealer or a service center. CONCEALED DUCT Trouble Possible Cause...
Page 72: Ceiling-Mounted Type (C Type)
■ Troubleshooting 13-3. Ceiling-Mounted Type (C Type) If your air conditioner does not work properly, first check the ■ Name of Parts following points before requesting service. If it still does not work properly, contact your dealer or a service center. CEILING-MOUNTED Trouble Possible Cause...
Page 73 ■ Troubleshooting Air filter The air filter collects dust and other particles from the air and If your air conditioner does not work properly, first check the should be cleaned at regular intervals as indicated in the table following points before requesting service. If it still does not below or when the filter indication ( ) on the display of the work properly, contact your dealer or a service center.
Page 74 13-4. Wall-Mounted Type (HW Type) Air intake grille ■ Name of Parts HW Type (Wall-Mounted) Air intake Air outlet Air filter ■ Care and Cleaning When replacing the filter, make sure that the FRONT mark is facing you. WARNING Push it up until you hear it click back into position. ●...
Page 75 ■ Troubleshooting If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or a service center. Trouble Possible Cause Remedy 1. Power failure. 1. After a power outage, conditioner press ON/OFF does not run...
Page 76 Instructions for venting ﬂ uorinated gas EN (English) Do not vent R407C into atmosphere : R407C is a ﬂ uorinated greenhouse gas, covered by Kyoto Protocol, with a Global Warming Potential (GWP) = 1530 Do not vent R410A into atmosphere : R410A is a ﬂ uorinated greenhouse gas, covered by Kyoto Protocol, with a Global Warming Potential (GWP) = 1730 IT (Italian) Non disperdere R407C nell’atmosfera : R407C è...

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Airwell OU-PSINV-70TH Installation Instructions Manual

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