Daikin FHQG71CVEB Installation Manual
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Summary of Contents for Daikin FHQG71CVEB
- Page 1 INSTALLATION MANUAL SPLIT SYSTEM Air Conditioners MODELS (Ceiling suspension type) FHQG71CVEB FHQG100CVEB FHQG125CVEB FHQG140CVEB READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLATION. KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE.
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Page 2: Table Of Contents
FHQG71CVEB FHQG100CVEB SPLIT SYSTEM Air Conditioner Installation manual FHQG125CVEB FHQG140CVEB CONTENTS 1. SAFETY PRECAUTIONS ....................1 2. BEFORE INSTALLATION ....................3 3. SELECTING INSTALLATION SITE ................5 4. PREPARATIONS BEFORE INSTALLATION..............6 5. INDOOR UNIT INSTALLATION ..................8 6. REFRIGERANT PIPING WORK ..................9 7. - Page 3 • When installing the unit in a small room, take measures against to keep refrigerant concentration from exceeding allowable safety limits in the event of refrigerant leakage. Contact the place of purchase for more information. Excessive refrigerant in a closed ambient can lead to oxygen deficiency.
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Page 4: Before Installation
2. BEFORE INSTALLATION Do not exert pressure on the resin parts when opening the unit or when moving it after opening. Be sure to check the type of R410A refrigerant to be used before doing any work. (Using an incorrect refrigerant will prevent normal operation of the unit.) •... - Page 5 FOR THE FOLLOWING ITEMS, TAKE SPECIAL CARE DURING CONSTRUCTION AND CHECK AFTER INSTALLATION IS FINISHED. a. Items to be checked after completion of work Items to be checked If not properly done, what is likely to occur Check Are the indoor and outdoor unit fixed firmly? The units may drop, vibrate or make noise.
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Page 6: Selecting Installation Site
3. SELECTING INSTALLATION SITE (1) Select an installation site where the following conditions are fulfilled and that meets your cus- tomer’s approval. • Where optimum air distribution can be ensured. • Where nothing blocks air passage. • Where condensate can be properly drained. •... -
Page 7: Preparations Before Installation
4. PREPARATIONS BEFORE INSTALLATION (1) Relation of holes for indoor unit, suspension bolt position, piping and wiring. Front view Left side piping hole Rear side piping hole(φ100) Rear wire lead-in hole A (Indoor unit) B (Suspension bolt pitch) False ceiling view Top side drain piping hole Top gas piping hole Top liquid piping hole... - Page 8 (3-2) Remove the dressing boards (left and right). • After removing the securing screws for the dressing boards (one each), pull them forward (in the direc- tion of the arrow) and remove them. (Refer to Fig. 3) • Take out the accessories. •...
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Page 9: Indoor Unit Installation
5. INDOOR UNIT INSTALLATION It may be easier to attach accessory parts before installing the indoor unit. Therefore, please also read the instruction manuals which are provided with the accessory parts. As for the parts to be used for installation work, be sure to use the provided accessories and specified parts designated by our company. -
Page 10: Refrigerant Piping Work
6. REFRIGERANT PIPING WORK 〈For refrigerant piping of outdoor units, see the installation manual attached to the outdoor unit.〉 〈Execute heat insulation work completely on both sides of the gas piping and the liquid piping. Otherwise, a water leakage can result sometimes.〉 (When using a heat pump, the temperature of the gas piping can reach up to approximately 120°C, so use insulation which is sufficiently resistant.) 〈Also, in cases where the temperature and humidity of the refrigerant piping sections might exceed... - Page 11 Not recommendable but in case of emergency You must use a torque wrench but if you are obliged to install the unit without a torque wrench, you may follow the installation method mentioned below. After the work is finished, make sure to check that there is no gas leak. When you keep on tightening the flare nut with a spanner, there is a point where the tightening torque suddenly increases.
- Page 12 Fig. 12 Procedure for thermal insulation of gas-side piping Insulating material for joints (6) Wind around the (accessory) pipe, beginning at Piping insulation Flare nut connection the base. material (main unit) Orient so that the end of Small seal material the wrapped insulation (9) (accessory) Attach to base...
- Page 13 NOTE 1. For the nitrogen exchange procedures, please refer to the Multi-split Type Series for Building Installation manual (contact your Daikin dealer). 2. Nitrogen should be set to 0.02MPa with a pressure-reducing valve if brazing while inserting nitrogen into the piping.
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Page 14: Drain Piping Work
3. Do not use flux when brazing refrigerant piping. Therefore, use the phosphor copper brazing filler metal (BCuP-2: JIS Z 3264/B-Cu93P-710/795: ISO 3677) which does not require flux. (Flux has extremely harmful influence on refrigerant piping systems. For instance, if the chlorine based flux is used, it will cause pipe corrosion or, in particular, if the flux contains fluorine, it will damage the refrigerant oil.) 4. - Page 15 • Be sure to use the included drain hose (1) and metal clamp (2). Also, insert the drain hose completely into the drain socket, and securely attach the clamp bracket inside on the inserted tip of the drain hose. (Refer to Fig. 21. 22) (Install the metal clamp (2) as shown in the picture so that the tightening section is within about a 45 degree range.) (Do not allow the drain socket to come in contact with the drain hose.
- Page 17 • Specifications for field wire The remote controller cord is a field supply part. Please prepare the wiring with reference to the Table 3. Table 3 Wire Length Size (mm H05VV - U4G Wiring between units – (NOTE 1, 2) Vinyl cord with sheath or cable Max.
- Page 18 Fig. 26 Remote control Seal with caulking material or putty terminal block (2P) (field supply) Power supply terminal block (3P) Fig. 28 Printed circuit board Wiring/Piping- through hole Refrigerant Control box piping Penetration Drain hose Remote controller cord (low current) Set apart Bushing (10) ≥50 mm...
- Page 19 Observe the notes mentioned below when wiring to the terminals. Tightening torque for the terminal screws. • Use the correct screwdriver for tightening the terminal screws. If the blade of screwdriver is too small, the head of the screw might be damaged, and the screw will not be properly tightened. •...
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Page 20: Wiring Example
9. WIRING EXAMPLE CAUTION Be sure to install an earth leakage breaker to the outdoor unit. Installation of an earth leakage breaker is mandated to avoid electric shocks or fire. For the wiring of outdoor units, refer to the installation manual attached to the outdoor units. Confirm the system type. - Page 21 Fig. 32 Group control Main power supply Main power supply Main power supply Main switch Main switch Main switch Fuse Fuse Fuse 1 2 3 1 2 3 1 2 3 Outdoor unit 1 Outdoor unit 16 Outdoor unit 2 1 2 3 1 2 3 1 2 3...
- Page 22 Fig. 34 2 remote controllers control Main power supply Main switch Fuse 1 2 3 Outdoor unit 1 2 3 Indoor unit Remote controller 2 Remote controller 1 (Optional accessories) (Optional accessories) 9-2 2 remote controllers control (Controlling 1 indoor unit by 2 remote controllers) •...
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Page 23: Attaching The Suction Grille And The Dressing Boards
10. ATTACHING THE SUCTION GRILLE AND THE DRESSING BOARDS • Once wiring is complete, firmly attach the dressing side board by reversing the steps taken to remove the suction grille. • Install the suction grille while hanging the cord of the suction grille on the hook of the indoor unit as shown below. -
Page 24: Test Operation
11-3 Setting air filter sign • Remote controllers are equiped with liquid crystal display air filer signs to display the time to clean air filters. • Change the SECOND CODE NO. according to “Table 5” depending on the amount of dirt or dust in the room. (SECOND CODE NO. - Page 25 • During the test operation, confirm that the air flow direction and air flow rate are set as specified. • If the interior finishing work is not completed upon completion of the test operation, inform the customer that practical operation must not be performed until the interior finishing work is completed. This is necessary in order to protect the indoor unit.
- Page 26 (1) Press the INSPECTION /TEST OPERATION button, “ ” is displayed and “ 0 ” flashes. (2) Press the PROGRAMMING TIME button and find the unit No. which stopped due to trouble. Number of beeps3 short beeps Perform all the following operations 1 short beep ....
- Page 27 Current sensor system malfunction (outdoor unit) Discharge pipe thermistor faulty (outdoor unit) Suction pipe thermistor faulty (outdoor unit) Heat exchanger thermistor faulty (outdoor unit) Heat exchanger (2) termistor faulty (outdoor unit) Liquid piping thermistor malfunction (heating) (outdoor) Gas piping thermistor malfunction (cooling) (outdoor) Discharge pipe pressure sensor system malfunction (outdoor unit) Intake pipe pressure sensor system malfunction (outdoor unit) INV system malfunction (outdoor unit)
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Page 28: Wiring Diagram
CAUTION If the interior finishing work is not completed upon completion of the test operation, inform the customer that practical operation must not be performed until the interior finishing work is completed. This is nec- essary in order to protect the product. If the unit is operated under this condition, paint, glue, and other materials used during the interior finishing work will contaminate the product. - Page 29 Fig. 37 English...
- Page 30 3P249378-3C EM10A019 (1008) HT...
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