Mitsubishi Heavy Industries FDFL71KXE6F User manual

TECHNICAL MANUAL
Manual No.'20 • KX-T-348
•Note:
(INDOOR UNIT)
VRF INVERTER MULTI-SYSTEM
AIR-CONDITIONERS
Floor standing (with casing) type
Floor standing (without casing) type
(1) This document describes the indoor units with service code /F (with motion sensor system
function).
FDFL71KXE6F
FDFU28KXE6F
45KXE6F
56KXE6F
71KXE6F
updated December 14, 2020

'20 • KX-T-348
PREFACE
Notes (1) YES: Connectable (See following table in detail), NO: Not connectable
Same series Mixed series
YES [A] 2 KXE6&KXZ (New) New (for KX6) New (for KX6)
YES [B] KXE4 series KXE6 &
KXE4 series (Previous) Previous (for KX4)
YES [C] KXE4 series KXE4 series KXE4 series Previous (for KX4)
Previous (for KX4)
Previous (for KX4)
(2) Combination with new central control, PC windows central control and BMS interface unit
SC-SL1N-E SC-SL2NA-E SC-SL4N-AE/BE SC-WGWN-A/B SC-LGWN-A
SC-BGWN-A/B
128 128 96 128
(128x1) (64x2) (48x2) (64x2)
Superlink
protocol New New New New New New
Connectable
network 1 1 1 2 2 2
144 96 96 96
(48x3) (48x2) (48x2) (48x2)
Superlink
protocol Previous Previous Previous Previous Previous Previous
Connectable
network 1 1 3 2 2 2
KXE6&KXZ
Outdoor unit
YES[B]
&
YES[C]
YES [A]
Connectable
I/U
Connectable
I/U 16 48
Central control, PC windows central control and BMS interface unit
Limitation
64
Connected Indoor unit DIP switch
setting of
outdoor unit
KXE6
Superlink
protocol
16 3
4
*5
4 4
3
3 Maximum number of AC cell is limited up to 96.
In case the number of connected indoor units are more than 96, some AC cells should hold 2 or more indoor units.
4 In case of other central control like SC-SLxN-E is connected in the same network, the connectable indoor unit is limited up to 64 (32x2).
5 In case of previous Superlink protocol, the Superlink mode of new central control should be set "Previous".
6 In case of YES[A], previous central control is available to use. But the limitation of connectable indoor unit and so on is complied with
the rule of previous Superlink.
(3) The compatibility of PFD (refrigerant flow branching control)is mentioned in following table.
(4) Compatibility of the PFD control extension cables is as per the following table.
Indoor unit
Connectable PFD control
KXE4 & KXE5 series KXE6 & KXZE1 series
PFD＊＊＊3 -E
KXRE4 series PFD-E PFD-E
PFD-ER PFD-ER PFD＊＊＊4-E
Outdoor unit
KXRE6 series PFD-E PFD＊＊＊3 -E
PFD-ER PFD
PFD＊＊＊3 -E
KXZRE1 series PFD
2 If Outdoor unit system (YES [A]) is connected to other outdoor unit systems (YES [B] and/or YES [C]) in one
Superlink network, the dip switch of outdoor unit KXE6 of (YES [A]) should be set from (New) to (Previous).
In this case the Superlink protocol and limitation of outdoor unit system (YES [A]) are switched to Previous (for KX4).
Combination table for KX4 series and KX6 series ( ) Date of launching in the market
Indoor unit
Connectable Same or
Same series Same series Same series Mixed series Mixed series Mixed series Mixed series
remote control Mixed series Same series
RC-E1 KXE4 KXE4(A) KXE4A KXE4A KXE4A KXE4A
KXE4KXE4R
KXE4BR
KXE5R
R KXE4R KXE4R KXE4R
Category
3-wire type
RC-E1R KXE4BR KXE4BR KXE4BR KXE4BR
KXE5R KXE5R KXE5R KXE5R
RC-E3 KXE6 KXE6 KXE6 KXE6
RC-E4 KXE6A KXE6A KXE6A KXE6A
2-wire type
RC-E5 KXE6B KXE6B KXE6B KXE6B
KXE6D KXE6D KXE6D KXE6D
RC-EX1A KXE6F KXE6F KXE6F KXE6F
Outdoor unit RC-EX3 KXZE1 KXZE1 KXZE1 KXZE1
FDCA-HKXE4 5HP (2004.4-) YES [C] YES [C] YES [C] NO NO NO NO NO NO
FDCA-HKXE4 8-48HP (2004.4-) NO YES [C] YES [C] NO NO NO NO NO NO
FDCA-HKXE4A 5HP (2006.2-) 1
NO YES [C] YES [C] YES [C] NO NO YES [C] NO NO
FDCA-HKXE4R 5,6HP (2006.5-)
FDC-KXZPE1 8,10HP (2014.12-)
FDCA-HKXE4A 8-48HP
FDCA-HKXE4R 8-48HP
FDCA-HKXE4BR 8-48HP
FDCA-HKXE4D 8-48HP
(2006.2-)
Heat pump
(2-pipe)
(2006.5-) NO YES [C] YES [C] YES [C] YES [C] YES [C] YES [C] YES [C] YES [C]
systems (2007.4-)
(2008.7-)
FDC-KXE6 4,5,6HP (2008.3-) NO NO NO NO NO NO NO NO YES [A] 6
6
FDC-KXE6 8-12HP (2009.2-) NO NO NO NO NO NO YES [B] YES [B] YES [A]
FDC-KXZE1 4,5,6HP (2018.2-)
FDC-KXE6 14-48HP (2009.1-) NO NO NO NO NO NO YES [B] YES [B] YES [A]
FDC-KXZEN/S1 4HP (2019.4-) NO NO NO NO NO NO NO NO YES [A]
NO NO NO NO NO NO NO NO YES [A]
FDC-KXZME1 8-12HP (2019.1-) NO NO NO NO NO NO NO NO YES [A]
NO NO NO NO NO NO NO NO YES [A]
FDCA-HKXRE4 8-48HP (2004.11-) NO NO YES [C] NO NO NO NO NO NO
FDCA-HKXRE4A 8-48HP
FDCA-HKXRE4R 8-48HP
FDCA-HKXRE4BR 8-48HP
FDCA-HKXRE4D 8-48HP
(2006.2-)
Heat recovery
(3-pipe)
(2006.6-) NO NO YES [C] YES [C] YES [C] YES [C] YES [C] YES [C] YES [C]
systems (2007.4-)
[ Note(3) ] (2008.7-)
FDC-KXRE6 8-48HP (2009.5-) NO NO NO NO NO NO YES [B] YES [B] YES [A]
FDC-KXZRE1 8-60HP (2017.4-) NO NO NO NO NO NO NO NO YES [A]
1 except FDKA71KXE5R
＊＊＊4-E
＊＊＊4-E
Note:
All indoor unit downstream PFD box must be
same series, KXZR,KX6 series or KX4/5 series
PFD-control series
PFD ＊＊＊ 3-E PFD ＊＊＊ 4-E
PFD-15WR-E Yes No
PFD4-15WR-E No Yes
FDC-KXZE1 10-60HP (2017.4-)

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CONTENTS
2. SPECIFICATIONS
3. EXTERIOR DIMENSIONS
3.1 Indoor unit
3.2 Remote control (Option parts)
8. APPLICATION DATA
8.1 Installation of indoor unit
4. ELECTRICAL WIRING
5. NOISE LEVEL
6. TEMPERATURE AND VELOCITY DISTRIBUTION
8.2 Electric wiring work instruction
8.3 Installation of wired remote control (Option parts)
9. OUTLINE OF OPERATION CONTROL BY MYCROCOMPUTER
9.1 Remote control (Option parts)
9.2 Operation control function by the wired remote control
(1) Model RC-EX3A
(2) Model RC-E5
7. CAPACITY TABLES
9.3 Operation control function by the indoor control
10. SYSTEM TROUBLESHOOTING PROCEDURE
10.1 Basics of troubleshooting
10.2 Contents of troubleshooting
10.3 Instruction of how to replace PCB
10.4 Indoor PCB setting
11. OPTION PARTS
11.1 Wireless kit (RCN-KIT4-E2)
11.3 Simple wired remote control (RCH-E3)
1. INFORMATION
11.2 Motion sensor kit (LB-KIT2)
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5
5
8
20
20
28
32
44
44
47
32
39
50
67
67
68
96
2..............................................................................................
3
14
13
15
97
98
118
98
11
108

Model description
Example: FDFL 71 KX E
Series No.
Application power source...See the specifications
Multi KX series
Nominal capacity (Nominal cooling capacity : 7.1kW)
Model name Indoor unit : FDFL, FDFU
6F
(1) Table of remote control (Option)
(a) Wired remote control
Model Type
Eco touch
RC-EX3A
RCH-E3 Simple
Standard
All models RC-E5
Remote control model
Model Wireless kit
RCN-KIT4-E2
FDFL,FDFU
(b) Wireless kit (Wireless remote control)
Model Motion sensor kit
LB-KIT2
FDFL,FDFU
(c) Motion sensor kit
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1. INFORMATION
'20 • KX-T-348
(1) Table of remote control (Option)

PGD000Z155
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3
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'20 • KX-T-348
Nominal cooling capacity*1 Nominal heating capacity*2
Power source
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Exterior dimensions
Height x Width x Depth
Exterior appearance （Munsell color ）
Net weight Refrigerant equipment Heat exchanger
Refrigerant control
Air handling equipment Fan type & Q'ty
Fan motor Starting method Air flow(Standard) Cooling
Heating
Available static pressure
Outdoor air intake
Air filter, Q'ty Shock & vibration absorber
Insulation (Noise & heat)
Operation control
Remote control switch ( Option )
Room temperature control
Safety equipment
Installation data
Refrigerant piping size
Connecting method Refrigerant
Drain hose
Insulation for piping
Accessories
Exterior dimensions
Electrical wiring
Notes (1) The data are measured at the following conditions. Adapted to RoHS directive
DB WB DB WB OPTION Model Specification
27 ℃19 ℃35 ℃24 ℃RC-EX3A PJZ000Z333
7 ℃6 ℃RC-E5 PJZ000Z295
(2) This packaged air-conditioner is manufactured and tested in conformity with the following standard. RCH-E3 PJZ000Z272
ISO-T1 "UNITARY AIR-CONDITIONERS"
Wired Wired Wired Wireless RCN-KIT4-E2 PJZ000Z323
LB-KIT2 PJZ000Z341
Sound pressure level
Heating*2
Model
Power consumption
Running current Sound power level
Item
Operation
Cooling*1
ISO-T1
Standards
Indoor air temperature
Outdoor air temperature
20 ℃
Remote
control
Motion sensor
FDFL71KXE6F
7.1 8.0
1 Phase 220-240V 50Hz
0.09 - 0.10 0.09 - 0.10 0.41 - 0.42 0.41 - 0.42
Hi：43 Me：41 Lo：40
Hi：43 Me：41 Lo：40
Ceramic white
（N8.0 ）near equivalent
40
Centrifugal fan ×２
40
Direct line start
Hi：18 Me：15 Lo：12
Hi：18 Me：15 Lo：12
0
Not possible
Polypropylene net ×１(Washable)
Rubber sleeve(for fan motor)
Polyurethane form
Wired : RC-E5, RC-EX3A
Wireless : RCN-KIT4-E2
Thermostat by electronics
Internal thermostat for fan motor
Frost protection thermostat
Liquid line: φ9.52 (3/8")
Gas line: φ15.88 (5/8")
Flare piping
R410A
Connectable with VP20
Necessary(both Liquid & Gas line)
Mounting kit,Drain hose
PGD000Z052 PGD000Z156
Electronic expansion valve
630 × 1,481 × 225
Louver fin & inner grooved tubing
Hi：62 Hi：62
kg
W
Pa
mm
m3/min
kW kW
A
dB(A)
mm
2. SPECIFICATIONS
(1) Floor standing (with casing) type (FDFL)
Model FDFL71KXE6F

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'20 • KX-T-348
Nominal cooling capacity*1 Nominal heating capacity*2
Power source
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Exterior dimensions
Height x Width x Depth Net weight kg Refrigerant equipment Heat exchanger
Refrigerant control
Air handling equipment Fan type & Q'ty
Fan motor W Starting method Air flow(Standard) Cooling
Heating
Available static pressure Pa
Outdoor air intake
Air filter, Q'ty Shock & vibration absorber
Insulation (Noise & heat)
Operation control
Remote control switch ( Option ) Room temperature control
Safety equipment Installation data
Refrigerant piping size
Connecting method
Refrigerant
Drain hose Insulation for piping
Accessories
Exterior dimensions
Electrical wiring
Notes (1) The data are measured at the following conditions.
DB WB DB WB
27 ℃19 ℃35 ℃24 ℃
7 ℃6 ℃
(2) This packaged air-conditioner is manufactured and tested in conformity with the following standard.
ISO-T1 "UNITARY AIR-CONDITIONERS"
20 ℃
Item
Operation
Cooling*1
ISO-T1
Standards
Indoor air temperature
Outdoor air temperature
mm
Sound power level
dB(A)
Model
Power consumption
Running current
kW kW
A
Sound pressure level
m3/min
Heating*2
mm
FDFU28KXE6F
2.8 3.2
1 Phase 220-240V 50Hz
0.09 - 0.10 0.09 - 0.10 0.41 - 0.42 0.41 - 0.42
Hi：41 Me：38 Lo：36
Hi：41 Me：38 Lo：36
25
Centrifugal fan ×２
30
Direct line start
Hi：12 Me：11 Lo：10
Hi：12 Me：11 Lo：10
0
Not possible
Polypropylene net ×１(Washable)
Rubber sleeve(for fan motor)
Polyurethane form
Wired : RC-E5, RC-EX3A
Wireless : RCN-KIT4-E2
Thermostat by electronics
Internal thermostat for fan motor
Frost protection thermostat
Liquid line: φ6.35 (1/4")
Gas line: φ9.52 (3/8")
Flare piping
R410A
Connectable with VP20
Necessary(both Liquid & Gas line)
Mounting kit,Drain hose
PGD000Z056 PGD000Z158
630 × 1,077 × 225
Hi：58 Hi：58
Louver fin & inner grooved tubing
FDFU45KXE6F
4.5 5.0
1 Phase 220-240V 50Hz
0.09 - 0.10 0.09 - 0.10 0.41 - 0.42 0.41 - 0.42
Hi：43 Me：41 Lo：40
Hi：43 Me：41 Lo：40
25
Centrifugal fan ×２
40
Direct line start
Hi：14 Me：12 Lo：10
Hi：14 Me：12 Lo：10
0
Not possible
Polypropylene net ×１(Washable)
Rubber sleeve(for fan motor)
Polyurethane form
Wired : RC-E5, RC-EX3A
Wireless : RCN-KIT4-E2
Thermostat by electronics
Internal thermostat for fan motor
Frost protection thermostat
Liquid line: φ6.35 (1/4")
Gas line: φ12.7 (1/2")
Flare piping
R410A
Connectable with VP20
Necessary(both Liquid & Gas line)
Mounting kit,Drain hose
PGD000Z056 PGD000Z158
630 × 1,077 × 225
Electronic expansion valve
Louver fin & inner grooved tubing
Hi：60 Hi：60
FDFU56KXE6F
5.6 6.3
1 Phase 220-240V 50Hz
0.09 - 0.10 0.09 - 0.10 0.41 - 0.42 0.41 - 0.42
Hi：43 Me：41 Lo：40
Hi：43 Me：41 Lo：40
25
Centrifugal fan ×２
40
Direct line start
Hi：14 Me：12 Lo：10
Hi：14 Me：12 Lo：10
0
Not possible
Polypropylene net ×１(Washable)
Rubber sleeve(for fan motor)
Polyurethane form
Wired : RC-E5, RC-EX3A
Wireless : RCN-KIT4-E2
Thermostat by electronics
Internal thermostat for fan motor
Frost protection thermostat
Liquid line: φ6.35 (1/4")
Gas line: φ12.7 (1/2")
Flare piping
R410A
Connectable with VP20
Necessary(both Liquid & Gas line)
Mounting kit,Drain hose
PGD000Z056 PGD000Z158
630 × 1,077 × 225
Louver fin & inner grooved tubing
Hi：60 Hi：60
Electronic expansion valve
FDFU71KXE6F
7.1 8.0
1 Phase 220-240V 50Hz
0.09 - 0.10 0.09 - 0.10
0.41 - 0.42 0.41 - 0.42
Hi：43 Me：41 Lo：40
Hi：43 Me：41 Lo：40
32
Centrifugal fan ×２
40
Direct line start
Hi：18 Me：15 Lo：12
Hi：18 Me：15 Lo：12
0
Not possible
Polypropylene net ×１(Washable)
Rubber sleeve(for fan motor)
Polyurethane form
Wired : RC-E5, RC-EX3A
Wireless : RCN-KIT4-E2
Thermostat by electronics
Internal thermostat for fan motor
Frost protection thermostat
Liquid line: φ9.52 (3/8")
Gas line: φ15.88 (5/8")
Flare piping
R410A
Connectable with VP20
Necessary(both Liquid & Gas line)
Mounting kit,Drain hose
PGD000Z057 PGD000Z158
630 × 1,362 × 225
Hi：60 Hi：60
Louver fin & inner grooved tubing
Electronic expansion valve
OPTION Model Specification
RC-EX3A PJZ000Z333 RC-E5 PJZ000Z295 RCH-E3 PJZ000Z272
Wired Wired Wired Wireless RCN-KIT4-E2 PJZ000Z323
LB-KIT2 PJZ000Z341
Remote
control
Motion sensor
Adapted to RoHS directive
Electronic expansion valve
PGD000Z157
(2) Floor standing (without casing) type (FDFU)
Models FDFU28KXE6F, 45KXE6F, 56KXE6F, 71KXE6F
#

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B
PGD000Z052
A BLiquid piping
Gas piping
(
Accessory
)
Drain piping
(
Accessory
)
Slot hole for wall mounting Metal plate for floor mounting
(
Accessory
)
D C
E
(M10)
(M8)
Symbol Content
φ15.88(5／8")(Flare)
φ9.52(3／8")(Flare)
PT20A female screw, 360mm
Floor piping space
Remote control installation section
Control box Expansion valve box
Flexible tube
Level adjusting screw
Space for installation and service
4
－
12×24
205 205
180 23
10
177
126
166
1071
1481
184
148
73
223223
32
98
197
220 250
225
1035
1091 195
197
225
195
630
80
234
315
D
B
A
C
B
EA
（slot hole）
10×30
（slot hole）
or more
150
or more
150
or more
1000
or more
600
or more
600
Floor
Air filter
Note
(
1
)
The model name label is attached
on the lid of the control box.
Unit:mm
3. EXTERIOR DIMENSIONS
3.1 Indoor unit
(1) Floor standing (with casing) type (FDFL)
Model FDFL71KXE6F

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28
45,56
B
PGD000Z056
(2) Floor standing (with casing) type (FDFU)
Models FDFU28KXE6F, 45KXE6F, 56KXE6F

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B
PGD000Z057
Model FDFU71KXE6F

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PJZ000Z333
Installation space
30mm
30mm
30mm
120mm
配線
30mm 30mm
30mm
120mm
Wiring
R/C temperature sensor
Secure minimum spaces for disassembling the case.
Upper left and Upper right sides
……30mm or more
Bottom side…120mm or more
If using L-shaped screwdriver, 50mm or more is
available.
Dimensions (Viewed from front)
37 23 23
固定穴
18.383.5
120
19
120
37 23 23 19
120
Fixing holes
83.5
120
18.3
≦200 m 0.5 mm2x 2 cores
≦300m 0.75 mm2x 2 cores
≦400m 1.25 mm2x 2 cores
≦600m 2.0 mm2x 2 cores
● Do not install the remote control at following places.
(1) It could cause break-down or deformation of remote control.
・Where it is exposed to direct sunlight
・Where the ambient temperature becomes 0 °C or below, or 40 °C or above
・Where the surface is not flat
・Where the strength of installation area is insufficient
(2) Moisture may be attached to internal parts of the remote control, resulting in a display failure.
・Place with high humidity where condensation occurs on the remote control
・Where the remote control gets wet
(3) Accurate room temperature may not be detected using the temperature sensor of the remote
control.
・Where the average room temperature cannot be detected
・Place near the equipment to generate heat
・Place affected by outside air in opening/closing the door
・Place exposed to direct sunlight or wind from air-conditioner
・Where the difference between wall and room temperature is large
(4) When you are using the automatic grille up and down panel in the IU, you may not be able to
confirm the up and down motion.
・Where the IU cannot be visually confirmed
● When installing the unit at a hospital, telecommunication facility, etc., take
measures to suppress electric noises.
It could cause malfunction or break-down due to hazardous effects on the inverter, private power
generator, high frequency medical equipment, radio communication equipment, etc.
The influences transmitted from the remote control to medical or communication equipment could
disrupt medical activities, video broadcasting or cause noise interference.
R/C cable:0.3mm2 x 2 cores
When the cable length is longer than 100 m,
the max size for wires used in the R/C case
is 0.5 mm2. Connect them to wires of larger
size near the outside of R/C. When wires are
connected, take measures to prevent water,
etc. from entering inside.
Adapted RoHS directive
3.2 Remote control (Option parts)
(1) Wired remote control
Model RC-EX3A