Table of Contents
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Refrigerant
R410A
Multi Air Conditioning System
for Buildings (VRF System)
INSTALLATION INSTRUCTION SHEET
(PART NO. 9374241033)
Contents
1. SAFETY PRECAUTIONS ......................................................................... 2
3. ACCESSORIES ........................................................................................ 4
4. INSTALLATION WORK ............................................................................ 5
4.1.
SELECTING AN INSTALLATION LOCATION .............................................. 5
4.2.
TRANSPORTING THE PRODUCT .............................................................. 6
4.3.
INSTALLATION DIMENSIONS ..................................................................... 7
4.4
INSTALLATION THE UNIT ........................................................................... 9
4.5.
SYSTEM LAYOUT ...................................................................................... 10
4.6.
PIPE SELECTION ...................................................................................... 11
4.7.
PIPE INSTALLATION ................................................................................. 12
4.8.
INSTALLING INSULATION ........................................................................ 17
4.9.
DRAIN PROCESSING ............................................................................... 17
4.10. ELECTRICAL WIRING ............................................................................... 18
4.11. FIELD SETTING ........................................................................................ 23
5. CHARGING WITH REFRIGERANT ........................................................ 28
5.1.
SEALING TEST ......................................................................................... 28
5.2.
VACUUM PROCESS ................................................................................. 29
5.3.
ADDITIONAL CHARGING ......................................................................... 29
6. TEST RUN ............................................................................................... 31
6.1.
PRE-TEST RUN CHECK ITEMS ............................................................... 31
6.2.
TEST RUN METHOD ................................................................................. 31
6.3.
CHECKLIST ............................................................................................... 31
7. ERROR DISPLAY ................................................................................... 32
7.1.
NORMAL OPERATION MODE .................................................................. 32
7.2.
ERROR OPERATION MODE ..................................................................... 33
8. PUMP DOWN .......................................................................................... 34
9. OPTION PARTS ...................................................................................... 35
10. INFORMATION ....................................................................................... 36
OUTDOOR MODEL
MASTER
SLAVE
9374241033_IM_en_p01-17.p65
AJ
A72LBTF
AJ
A90LBTF
AJ
126LBTF
AJ
A72UBTF
AJ
A90UBTF
AJ
126UBTF
1
26/8/2008, 18:23
En-1
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Summary of Contents for Fujitsu AJ**A72LBTF
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Page 1: Table Of Contents
Refrigerant R410A Multi Air Conditioning System for Buildings (VRF System) INSTALLATION INSTRUCTION SHEET (PART NO. 9374241033) Contents 1. SAFETY PRECAUTIONS ................. 2 2. PRECAUTIONS FOR USING THE ALTERNATIVE REFRIGERANT ..3 3. ACCESSORIES ..................4 4. INSTALLATION WORK ................5 4.1. -
Page 2: Safety Precautions
1. SAFETY PRECAUTIONS • Be sure to read this Sheet thoroughly before installation. • The warnings and precautions indicated in this Sheet contain important information pertaining to your safety. Be sure to observe them. • After installing the unit, perform a test run to make sure the unit operates normally. Then, explain to the customer how to operate and maintain the unit. -
Page 3: Precautions For Using The Alternative Refrigerant
This mark indicates procedures which, if improperly performed, might possibly result in personal CAUTION! harm to the user, or damage to property. • Do not install the unit in the following areas: • Area with high salt content, such as at the seaside. It will deteriorate metal parts, causing the parts to fall or the unit to leak water. -
Page 4: Accessories
3. ACCESSORIES The following installation parts are supplied. Use them as required. Do not discard any accessories until the installation work has been completed. Description Q’ty Application Description Q’ty Application Drain pipe For outdoor unit drain Terminal resistor Install it on the board of piping work (Heat pump the outdoor unit (master model only) -
Page 5: Installation Work
4. INSTALLATION WORK Make sure to obtain the customer’s approval for selecting and installing the unit. 4.1. SELECTING AN INSTALLATION LOCATION WARNING • Install the unit in a location that can withstand its weight, and where it will not topple or fall. •... -
Page 6: Transporting The Product
4.2. TRANSPORTING THE PRODUCT Fig. 4.2-1 Transporting with ropes (Fig. 4.2-1) Product mass Protective boards • To transport the outdoor unit to the installation location by sus- About 380 kg pending it, use the four cutouts that are located in the front and back to pass a rope under the base. -
Page 7: Installation Dimensions
4.3. INSTALLATION DIMENSIONS CAUTION Be careful of the following issues for selecting position of outdoor unit. • Install with sufficient space when taking into consideration such as conveyance routes, installation space, walk space and maintenance. • Observe the installation space specifications that are shown in the figures. If installation is not performed according to the specifications, it could cause a short circuit and result in a lack of performance. - Page 8 Multiple Connections 1 Installation space must be satisfied for each wall (front, rear, sides) are shown below (Fig. 4.3-3): • There must be no obstructions on the blowing side of the fan. If there are obstructions on the blowing side of the fan, a discharge duct must be used. •...
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Page 9: Installation The Unit
3 The number of outdoor units that may be connected is 1 system (3 units connected) (Fig. 4.3-5). • To install more than 1 outdoor unit system, provide a distance between each refrigerant system. • Do not install walls at the sides. Fig. -
Page 10: System Layout
4.5. SYSTEM LAYOUT CAUTION If there are multiple outdoor units to be connected, make sure to install the master unit near the indoor unit. If 3 outdoor units are to be connected, install them in descending order, starting with the one with the largest capacity closest to the indoor unit. -
Page 11: Pipe Selection
Fig. 4.6-1 MASTER SLAVE 1 SLAVE 2 4.6. PIPE SELECTION Unit Unit Unit Pipe size CAUTION (Table 4.6-6) • This unit is designed specifically for use with the R410A Pipe size refrigerant. (Table 4.6-2) Pipe size • Pipes for R407C or R22 may not be used with this unit. (Table 4.6-3) Separation tube First separation... -
Page 12: Pipe Installation
4.7. PIPE INSTALLATION 4.7.1. BRAZING CAUTION • If air or another type of refrigerant enters the refrigeration cycle, Pressure regulating valve the internal pressure in the refrigeration cycle will become abnormally high and prevent the unit from exerting its full performance. Nitrogen gas Brazing area •... - Page 13 4.7.3. INDOOR UNIT PIPE CONNECTIONS CAUTION Separation tube Horizontal Vertical Horizontal line ±15° NO GOOD A : Outdoor unit or Refrigerant branch kit B : Indoor unit or Refrigerant branch kit Header Gas pipe = 0 mm – Horizontal 10 mm β...
- Page 14 4.7.5. PIPE CONNECTIONS CAUTION • Seal the pipe routing holes with putty (supplied locally) so that there will be no gap. If small animals such as insects enter the outdoor unit, they can cause a short circuit in the electrical box. •...
- Page 15 4.7.6. MULTIPLE CONNECTIONS CAUTION • When connecting multiple units (3 units maximum), make sure the master unit has the maximum capacity in the system. Example: Master Slave 1 Slave 2 126LBTF + AJ 126UBTF A90LBTF + AJ A72UBTF 126LBTF + AJ 126UBTF + AJ A90UBTF A72LBTF + AJ...
- Page 16 Fig. 4.7-10 Examples of multiple unit installation (Example 1) (Example 2) (Example 5) Master Slave 1 Slave 2 Master Slave 1 Slave 2 <Rear> <Rear> Master <Rear> <Front> <Front> <Front> Slave 1 <Rear> (Example 3) (Example 4) <Front> Master Slave 1 Slave 2 <Rear>...
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Page 17: Installing Insulation
Fig. 4.8-1 4.8. INSTALLING INSULATION • Install a insulation after performing “5.1. SEALING TEST”. • Use an insulation on the refrigerant pipes to prevent condensation Insulation and dripping. (Fig. 4.8-1) • Determine the thickness of the insulation material by referring to Table 4.8-1. •... -
Page 18: Electrical Wiring
4.10. ELECTRICAL WIRING WARNING • Wiring connections must be performed by a qualified person in accordance with specifications. The voltage rating for this product is 400 V at 50 Hz. It should be operated within the range of 342 to 456 V. •... - Page 19 CAUTION • Pay attention to the following points while attaching wires on the terminal board. Do not attach 2 wires on one side. Do not twist wires. Do not cross the wires. Do not shorted at edge at root. 2pcs at one side Wires twisted Wires crossed No Good...
- Page 20 4.10.2. WIRING METHOD Wiring example for the indoor unit and the outdoor unit are shown in Fig. 4.10-1 and Fig. 4.10-2. Using a knife, cut the bushing in order to route the wiring to the outdoor unit. (Fig. 4.10-3) Remove the electrical box cover and connect the wires to the terminal in accordance with the terminal nameplate. After connecting the wires, use cable clips to secure the wires.
- Page 21 (Example. 2) In case of connected three outdoor unit 230 V 1ø 50 Hz Transmission cable Indoor unit Power supply cable Circuit breaker Circuit breaker (Sub) Circuit breaker (Main) 400 V 3ø 50 Hz Remote controller cable Outdoor unit Power supply cable (Example.
- Page 22 Fig. 4.10-3 Control box metal cover Transmission cable (Indoor unit and outdoor unit connection cable) Bush Power supply cord Fig. 4.10-4 Transmission For a single transmission line terminal board Control Power terminal board Cord clamp Binder C Cable clip Ring torque Transmission terminal :M8 cable...
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Page 23: Field Setting
4.11. FIELD SETTING CAUTION Discharge the static electricity from your body before setting up the DIP switches. Never touch the terminals or the patterns on the parts that are mounted on the board. Fig. 4.11-1, Fig. 4.11-2 shows the positions of the switches on the board of the outdoor unit. Fig. - Page 24 4.11.2. FIELD SETTING The following describes the switch functions and setups that are required for installing an outdoor unit. Table 4.11-2 DIP SW1-1, 1-2 setting 1. SW1 Setting SW1-1, 1-2 (Test run) SW1-1 SW1-2 Control mode Remarks The setting SW1 is only performed on the master unit. Normal (Factory setting) Refer to There is no need to make this setting on the slave unit.
- Page 25 Table 4.11-9 DIP SW4-1, 4-2 setting 4. SW4 Setting SW4-1, 4-2 (Number of connectable outdoor units) Number of This DIP switch setting sets the number of outdoor units. SW4-1 SW4-2 connectable Remarks There is no need to make this setting on the slave unit. outdoor units 0 (Factory setting) Master unit only 1 slave unit...
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Page 26: Rotary Switch Setting
4.11.3. ROTARY SWITCH SETTING Rotary switch setting The rotary switch is for setting the refrigerant circuit address. Rotary switch (SW8) - - - Factory setting “0” Rotary switch (SW9) - - - Factory setting “0” In the case of multiple refrigerant circuits, set SW8 and SW9 as shown in the Table 4.11-15 for each refrigerant circuit. Do not use a nonexistent switch setting combination. - Page 27 4.11.4. TERMINAL RESISTOR SETTING Fig. 4.11-3 CAUTION Terminal resistor Make sure to install a termination resistor as speci- fied. Install 1 termination resistor within 500 meters of the overall length of the transmission line. Install the termination resistor as shown in Fig. 4.11-3. •...
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Page 28: Charging With Refrigerant
5. CHARGING WITH REFRIGERANT Fig. 5-1 Connection system A) In case of connected one out door unit Outdoor unit Pressure regulating valve Pressure gauge Nitrogen R410A Indoor Indoor unit unit Vaccum Scale pump B) In case of connected many outdoor units Outdoor unit Outdoor unit Pressure regulating valve... -
Page 29: Vacuum Process
5.2. VACCUM PROCESS CAUTION • If the system is not evacuated sufficiently, its performance will drop. • The location from which to evacuate the system differs whether 1 outdoor unit or multiple outdoor units are connected. Evacuation procedure • One outdoor unit connected: 1. - Page 30 Additional charge calculation formula • Additional refrigerant charge amount is calculated according to calculated value from its pipe length of liquid pipe and additional amount for outdoor unit. • Round up the calculated result to two decimal places. Calculation of additional charge refrigerant Factory charged Additional Diameter of...
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Page 31: Test Run
6. TEST RUN 6.1. PRE-TEST RUN CHECK ITEMS Fig. 6-1 Before performing a test run, check the following items by refer- 12345678 ring to the Fig. 6-1. 1ø 50 Hz Outdoor Outdoor Outdoor 1 Is there a gas leakage? (At pipe connections {flange connec- 230 V unit unit... -
Page 32: Error Display
7. ERROR DISPLAY Operation can be checked by the lighting and flashing of the LED lamps. Perform judgment in accordance with the following. 7.1. NORMAL OPERATION MODE Display LED 1 LED 2 LED 3 LED 4 LED 5 LED 6 Idling (stopped) Cooling operation Heating operation... -
Page 33: Error Operation Mode
7.2. ERROR OPERATION MODE Display LED 1 LED 2 LED 3 LED 4 LED 5 LED 6 Compressor 1 error Compressor 2 error Compressor 3 error Discharge temperature 1 error Discharge temperature 2 error Discharge temperature 3 error High pressure error Low pressure error Pump down error 4-way valve error... -
Page 34: Pump Down
8. PUMP DOWN CAUTION Do not reuse the refrigerant that has been recovered by the recovery pump. To prevent the discharge of the refrigerant into the atmosphere, follow the procedure indicated below to recover the refrigerant from an outdoor unit before moving or discarding the unit. Up to approximately 20 kg can be recovered per outdoor unit. If the volume of the refrigerant to be recovered is large, recover it into a refrigerant recovery cylinder while measuring the weight of the refrigerant. -
Page 35: Option Parts
9. OPTION PARTS CAUTION Listed below are option parts used exclusively with the R410A refrigerant. Do not use parts other than those listed below. 1. SEPARATION TUBE KIT Table 9-1 shows a outdoor unit branch kit that is used for installing multiple outdoor units. Table 9-2 shows separation tubes used for connection between outdoor and indoor units. -
Page 36: Information
Protection level against dust and water 14. Manufacture year Manufacture year Manufacturer 15. Manufacturer FUJITSU GENERAL LIMITED Address : 1116, Suenaga, Takatsu-ku, Kawasaki 213-8502, Japan 16. Origin Origin country 17. Condition of cooling/heating Dry-bulb temperature and wet-bulb temperature under standard cooling/heating condition 18.