Fujitsu ASU18RLF Service manual

AIR CONDITIONER
Wall Mounted type
INDOOR
OUTDOOR
ASU18RLF
ASU24RLF
AOU18RLXFW
AOU24RLXFW
DESIGN & TECHNICAL MANUAL

1. INDOOR UNIT
WALL MOUNTED TYPE :
ASU18RLF
ASU24RLF
DTR_AS051E_02
2011.01.28

WALL MOUNTED TYPE ASU18-24RLF WALL MOUNTED TYPE ASU18-24RLF
CONTENTS
1. INDOOR UNIT
1. FEATURE.................................................................................................................. 01 - 01
2. WIRELESS REMOTE CONTROLLER............................................... 01 - 04
3. SPECIFICATIONS.............................................................................................. 01 - 06
4. DIMENSIONS ........................................................................................................ 01 - 07
5. WIRING DIAGRAMS........................................................................................ 01 - 09
6. CAPACITY TABLE ............................................................................................ 01 - 10
6-1. COOLING CAPACITY...................................................................................... 01 - 10
6-2. HEATING CAPACITY........................................................................................01 - 11
7. FAN PERFORMANCE.................................................................................... 01 - 12
7-1. AIR VELOCITY DISTRIBUTION..................................................................... 01 - 12
7-2. AIR FLOW.......................................................................................................... 01 - 14
8. OPERATION NOISE......................................................................................... 01 - 16
8-1. NOISE LEVEL CURVE .................................................................................... 01 - 16
8-2. SOUND LEVEL CHECK POINT..................................................................... 01 - 17
9. ELECTRIC CHARACTERISTICS........................................................... 01 - 18
10. SAFETY DEVICES ............................................................................................ 01 - 19
11. EXTERNAL INPUT & OUTPUT............................................................... 01 - 20
11-1. EXTERNAL INPUT ........................................................................................... 01 - 20
11-2. EXTERNAL OUTPUT....................................................................................... 01 - 22
12. FUNCTION SETTING...................................................................................... 01 - 23
12-1. INDOOR UNIT (Setting by remote controller)........................................... 01 - 23
13. OPTIONAL PARTS ........................................................................................... 01 - 27

- (01 - 01) -
WALL MOUNTED TYPE ASU18-24RLF WALL MOUNTED TYPE ASU18-24RLF
FEATURE1.
MODEL

ASU18RLF
ASU24RLF
FEATURES

High energy performance
z
MODEL
ASU18RLF ASU24RLF
Seasonal Energy Efciency Ratio (SEER) 19.2 18.0
Heating Seasonal Performance Factor (HSPF) BTU/hW 10.0 10.0
Energy Efcient Ratio (EER) 13.3 12.5
MEASUREMENT CONDITIONS
ANSI/ASHRAE STANDARD 37-1988
ALL DC
z
Front view
a
b
Large air flow and quiet
operation by new air
flow path
High efficiency
layout
More compact compared with conventional model
DC twin rotary compressor
b
aDC fan motor
DC fan motor
Super quiet
z
Air ow mode can be set in 4 steps and more detailed air ow setting is possible.
Easy maintenance
z
Easy maintenance and always clean. Troublesome maintenance has been made easy.
Since the front panel is easy to remove, maintenance is also easy.
MIN. HEAT Operation
z
The room temperature can be set to go no lower than 50°F,
thus ensuring that the room does not get too cold when not occupied
Caution)
When the room temperature is higher than 50°F, “MIN. HEAT” operation does not start. Operation starts and maintains the room temperature

•
at 50°F when the temperature drops below 50°F.
50°F
70°F
“MIN. HEAT”
Button ON
Indoor unit
operation START
“MIN. HEAT”
Button ON

- (01 - 02) -
WALL MOUNTED TYPE ASU18-24RLF WALL MOUNTED TYPE ASU18-24RLF
Power diffuser
z
Adoption of large power diffuser
16
Outside air conditions:35.6o
F 60%
( F)
Operation contents: Heating,
Set temperature (Max set temp) o
8492 90 88 86
86 oF , Air flow Hi,
Vertical flap : Downward
Horizontal flap : Center
7
3
0
10 20 30 40 (ft)
(ft)
Power diffuser
(full open)
46o
“Strong vertical air ow” provides
powerful oor level heating.
“Healthy horizontal air ow” does not blow
cool air directly at the occupants in the room.
Power diffuser
Outside air conditions: 95
o
F 40%
( F)
Operation contents: Cooling,
Set temperature (Min set temp)
65 o
o
F , Air flow Hi, 6559 61 63
7
3
0
10 20 30 40 (ft)
(ft)
Vertical flap : Upward
Horizontal flap : Center
Low ambient outdoor temperature design (24Model)
z
Low ambient outdoor temperature design
Cooling 0 to 115 °F
Heating 0 to 75 °F
Corresponds to maximum 164feet (50m) long piping
z

- (01 - 03) -
WALL MOUNTED TYPE ASU18-24RLF WALL MOUNTED TYPE ASU18-24RLF
Air conditioner lter features
z
Organic coating fin used
heat exchanger
Pre Filter
Antibacterial deodorizing
pre-filter with special
ceramic powder
Ion Deodorization Filter Apple-catechin Filter
Apple-
catechin Filter
Long-life Ion
Deodorization Filter
Economy operation
z
Example : Cooling operation
Economy operation is energy saving, as ●
the set temperature of indoor unit is shifted
by 2°F and the maximum electric value of
the outdoor unit is suppressed.
Temp.
Economy operation
Shift
setting
temp
Control maxmum current
Nomal operation Time
Set temperature
Blue n heat exchanger
z
Corrosion-resistance of the heat exchanger even in coastal areas has been improved by blue n
treatment of the outdoor unit heat exchanger.
Blue fin heat exchanger
Cobalt Blue protection
Standard chromate protection
Aluminium base material
Hydrophilic coating

- (01 - 04) -
WALL MOUNTED TYPE ASU18-24RLF WALL MOUNTED TYPE ASU18-24RLF
WIRELESS REMOTE CONTROLLER2.
FEATURES

Built-in timers
z
Select from four different timer programs (On / Off / Program / Sleep).
Program timer
z
The program timer operates the ON and OFF timer once within a 24 hour period.
Sleep timer
z
The sleep timer function automatically corrects the temperature thermostat setting according to the
time setting to prevent excessive cooling and heating while sleeping.
60min.
2°F (1°C) 4°F (2°C)
Timer setting
2°F (1°C) 4°F (2°C) 6°F (3°C) 8°F (4°C)
30min.
60min.
90min.
Timer setting
Cooling operation / dry operation
When the sleep timer is set, the set temperature
automatically rises 2°F (1°C) every hour. The set
temperature can rise up to a maximum of 4°F (2°C).
Heating operation
When the sleep timer is set, the set temperature
automatically drops 2°F (1°C) every 30 minutes. The
set temperature can drop to a maximum of 8°F (4°C).
Switching remote controller signal code
z
A B C D
A B CD
Mixed-up
I.U. I.U. I.U. I.U. I.U. I.U. I.U. I.U.
After code change
Code selector switch eliminates unit

•
being wrongly switched.
(Up to 4 codes can be set.)
*I.U.=Indoor unit
Four kinds of timer setup (ON / OFF / PROGRAM / SLEEP) are ●
possible.
Can be used jointly with wired remote controllers .●
Easy to change custom code (4 patterns).●

- (01 - 05) -
WALL MOUNTED TYPE ASU18-24RLF WALL MOUNTED TYPE ASU18-24RLF
FUNCTIONS

Display panel
Note: Functions will be different due to type of indoor unit.
For details, please see operation manual.
2
49
3
1
16
15
510
13
11
12
14
8
7
6
17
18
19
21
24
23
22
20
1MODE button
Selects the operating mode (AUTO, COOL, DRY, FAN, HEAT).
/Start / end R.C. custom code change. (Max 4 types)
2MIN.HEAT button
3SET TEMP. button ( / )
Set remote controller custom code buttons
Sets the indoor temp./ Sets R.C. custom code.
4ECONOMY button
5SLEEP button
Pressed to select sleep timer.
6FAN button
Selects the fan speed (AUTO, HIGH, MED, LOW, QUIET).
7START/STOP button
Pressed to start and stop operation.
8SET button (Vertical)
Air ow direction vertical set button.
9SET button (Horizontal)
Air ow direction horizontal set button.
10 SWING button
Air ow direction swing button.
11 TIMER MODE button
Pressed to select the timer mode. (OFF TIMER, ON TIMER,
PROGRAM TIMER, TIMER RESET)
12 TIMER SET ( + / - ) button
Sets the current time and on-off time.
13 CLOCK ADJUST button
Sets the current time.
14 RESET button
Used when replacing batteries.
15 TEST RUN button
Used when testing the air conditioner after installation.
16 Signal transmitter
17 Temperature set display
18 Operating mode display
19 Sleep display
20 Transmit indicator
21 Fan speed display
22 Swing display
23 Timer mode display
24 Clock display

- (01 - 06) -
WALL MOUNTED TYPE ASU18-24RLF WALL MOUNTED TYPE ASU18-24RLF
SPECIFICATIONS3.
Type WALL MOUNTED
INVERTER HEAT PUMP
Model name ASU18RLF ASU24RLF
Power source 208/230V ~ 60Hz
Available voltage range 187-253V ~ 60Hz
Capacity
Cooling
Rated kW 5.28 6.44
BTU/h 18,000 22,000
Min-Max kW 2.05 - 6.74 2.90 - 8.00
BTU/h 7,000 - 23,000 9,900 - 27,300
Heating
Rated kW 6.30 8.10
BTU/h 21,600 2 7, 6 0 0
Min-Max kW 2.05 - 8.50 2.20 - 10.61
BTU/h 7,000 - 29,000 7,500 - 36,200
Input power
Cooling Rated
kW
1.35 1.76
Max 3.01 3.42
Heating Rated 1.80 2.38
Max 3.23 3.53
Current
Cooling Rated
A
6.2 7. 9
Max 13.5 15.0
Heating Rated 8.0 10.5
Max 14.5 15.5
EER Cooling kW/kW 3.90 3.66
BTU/hW 13.3 12.5
COP Heating kW/kW 3.50 3.40
BTU/hW 12.0 11.6
SEER Cooling BTU/hW 19.2 18.0
HSPF Heating BTU/hW 10.0 10.0
POWER FACTOR Cooling %95 97
Heating 98 99
Moisture removal pints/h (l/h) 5.9 (2.8) 6.3 (3.0)
Fan
Airow
rate
Cooling
High
CFM
(m3/h)
541 (920) 659 (1,120)
Med 435 (740) 530 (900)
Low 365 (620) 435 (740)
Quiet 306 (520) 365 (620)
Heating
High 541 (920) 677 (1,150)
Med 435 (740) 530 (900)
Low 365 (620) 435 (740)
Quiet 318 (540) 365 (620)
Type × Q'ty Cross ow fan × 1
Motor output W 64 64
Sound pressure level
Cooling
High
dB(A)
43 49
Med 37 42
Low 33 37
Quiet 28 33
Heating
High 44 49
Med 37 42
Low 33 37
Quiet 28 33
Heat exchanger type
Dimensions
(H × W × D) in. (mm) Main:15-7/8 x 33-3/4 x 1-1/16 (378×832×26.6) Sub: 3-5/16 x 33-3/4 x 17/32 (84×832×13.3)
Fin pitch FPI Main:21, Sub:18
Rows x Stages Main:2×18, Sub:1×4
Pipe type Copper
Fin type Aluminium
Enclosure
Material Polystyrene
Color WHITE
Approximate color of MUNSELL N9.25/
Dimensions
( H×W×D )
Net mm 320×998×228
inch 12-5/8×39-1/4×9
Gross mm 319×1090×429
inch 12-3/5×42-15/16×16-7/8
Weight Net lbs. (kg) 31 (14)
Gross 40 (18)
Connection pipe Size Liquid in. (mm) Ø 3/8 (Ø 9.52)
Gas Ø 5 /8 (Ø 15.88)
Method Flare
Operation range Cooling °F (°C) 64 to 90 (18 to 32)
%RH 80 or less
Heating °F (°C) 88 (30) or less
Remote controller type Wireless
Drain pipe
Material PVC
Size mm
(Reference in.)
Outer diameter: 28 (1-3/32)
Inner diameter: 16 (5/8) .
Note :
Specications are based on the following conditions.
Cooling : Indoor temperature of 80°F (26.67°C)DB / 67°F (19.44°C)WB, and outdoor temperature of 95°F (35°C)DB / 75°F (23.9°C)WB.
Heating : Indoor temperature of 70°F (21.11°C)DB / 59°F (15°C)WB, and outdoor temperature of 47°F (8.33°C)DB / 43°F (6.11°C)WB.
Pipe length : 24.6ft(7.5m) [Outdoor unit - Indoor unit], Height difference : 0ft. (0m) [Outdoor unit - Indoor unit]

- (01 - 07) -
WALL MOUNTED TYPE ASU18-24RLF WALL MOUNTED TYPE ASU18-24RLF
DIMENSIONS4.
MODEL
 : ASU18RLF, ASU24RLF
Unit : in (mm)
ASU18RLF ASU24RLF
Refrigerant pipe are
connection
Liquid *ø 1/4 in. (6.35 mm) *ø 1/4 in. (6.35 mm)
Gas *ø 1/2 in. (12.70 mm) ø 5/8 in. (15.88 mm)
Drain hose connection Drain hose I.D. 15/32 in. (12 mm) , O.D. 5/8 in. (16 mm)
Drain hose : L=26-3/8 in. (670mm)
* When connecting to a connection pipe, an adapter provided as accessory along with the outdoor unit is required.
ASU18RLF ASU24RLF
Connection pipe Liquid ø 3/8 in. (ø 9.52 mm)
Gas ø 5/8 in. (ø 15.88 mm)
39-9/32 (998)
17-9/32 (439)
17-1/4 (438) 15-5/8 (397)
12-19/32 (320): Unit size
10-19/32 (269)
25/32 (20)
1-15/32 (37)
1-1/32 x 7/16 (26 x 11) hole
6/32 x 23/32 (5 x 18): 14holes
13/16 x 6/32 (21 x 5): 14holes
6/32 x 1-31/32 (5 x 50): 3holes
1/2 x 6/32 (13 x 5): 4holes
ø3-5/32 (80) hole
ø6/32 (5): 65holes
39-3/8 (1000): Unit size
Piping inlet
for tapping screw
23/32 x 7/16 (18 x 11) hole
23/32 x 7/16 (18 x 11) hole
4-13/16 (122) 6-25/32 (172)
2-15/16 (75)
15-1/4 (387)
6-11/16 (170)
5/8 (16)
15-3/4 (400)
Unit center
4-31/32 (126)
5-1/4 (133)
5-1/8 (130)
4-7/16 (113)
2-15/16 (75)
9-9/16 (243)
8-31/32
(228)
12-19/32 (320)
20-15/32 (520)
20-15/32 (520)
23-7/32 (590)
28-3/8 (721)
ø3-5/32 (80) hole
Piping inlet
1-6/32 (30)
1-6/32 (30)
5-7/8 (149)
7-3/4 (197)
10-23/32 (272)
1-23/32 (44)
15/32 (12)
1/2 (13)
1-1/32 x 7/16 (26 x 11) hole
1 (25)
ø1-1/4 (32)
ø5/8 (16)
ø15/32 (12)