Delta 80CS048J24 User manual

www.delta-dct.com
VRF STANDARD FOUR-WAY CASSETTE
INDOOR UNITS
80CS SERIES
INSTRUCTION MANUAL
WARNING!
Read and follow all safety precautions in
Instruction Manual - improper use can cause
serious injury.

USER NOTICES
ƹWhen operating, the entire capacity of the cooperating indoor units should be no larger than
that of the outdoor unit; otherwise, it would cause the shortage of cooling (heating) capacity.
ƹA breaker (or fuse) needs to be installed in every indoor unit, its capacity should accord
with the indoor unit’s electrical parameter and it is capable of preventing short circuits and
abnormal overload. All the indoor units are required to be centralized controlled by a main
switch, which can cut off the electric power supply in case of emergency. Before carrying out
the clearing and maintenance work to the indoor units, it is necessary to turn off the main
power supply switch.
ƹIn order to turn on the units successfully, the main power switch should be switched on 8 hours
before the operation.
ƹAfter receiving the turn-off signal, every indoor unit will continue to work for another 20-70s
to make use of the rest cool air or the rest heat air in the heat exchanger for preparing for the
next operation, which is absolutely normal.
ƹWhen the operating mode of the indoor unit clashes with that of the outdoor unit, the
malfunction light will blink after 5s on the indoor unit or the remote controller, then the indoor
unit will stop. At this time, change the operation mode of the indoor unit to the one that would
be compatible with that of the outdoor unit so as to make the operation return to normal. The
cooling mode won’t clash with the dry mode, while the fan mode won’t clash with any mode.
ƹThe appliance shall not be installed in the laundry.
ƹAn all-pole disconnection switch having a contact separation of at least 3mm among all poles
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ƹThe main switch provided by the end user should be black or gray and be locked in the “OFF”
position with the padlock.
ƹThe main disconnection device should be explained in the user manual and the height should
be recommended at 0.6-1.7m. Also, over current protection is required (EN 60947-3, EN
60947-2).
ƹDo not dispose this product as unsorted municipal waste. Collection of such waste separately
for special treatment is necessary.
ƹBefore obtaining access to terminals, all supply circuits must be disconnected.
ƹThis appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety.
ƹChildren should be supervised to ensure that they do not play with this appliance.

CONTENTS
1 Safety Information ...................................................................................1
2 Installation of the Cassette Type Indoor Unit...........................................2
2.1 Schematic Diagram of Installation Spaces ............................................... 2
2.2 Selection of the Installation Location of the Indoor Unit............................ 2
2.3 Important Notices...................................................................................... 3
2.4 Dimension of the Ceiling Opening and Location of the Hoisting Screw (M10) ... 3
2.5 Main body for Hoisting the Air Conditioner ............................................... 4
2.6 Connection of the Refrigerant Pipe........................................................... 4
2.7 Drainage Hose.......................................................................................... 5
2.8 Drain Raising Pipe ................................................................................... 6
2.9 Drainage Check ........................................................................................ 6
2.10 Electrical Wiring ...................................................................................... 7
2.11 Function Description of Functional DIP Switch S7.................................. 8
2.12 Installation of the Panel .......................................................................... 8
3 Structure and Part Name of the Cassette Type Indoor Unit .................. 11
4 Working Temperature Range................................................................. 11
5 Wired Controller and Wireless Controller .................................................. 12
5.1 Wired Controller...................................................................................... 12
5.2 Wireless Controller ................................................................................. 18
6 Operation Method In Case of Emergency .............................................22
7 Troubleshooting.....................................................................................23
8 Maintenance .........................................................................................25

1
1 Safety Information
(1). Please read this manual carefully before using this unit, and operate it correctly according to
the guide in this manual.
(2). Please take special note of the meaning of two marks below:
Warning! This mark means that it may cause casualty or badly hurt if the operation is
incorrect.
Note! This mark means that it may cause casualty or property loss if the operation is
incorrect.
Warning!
ƹDo not use the fuse with unsuitable capacity or iron thread instead of the fuse, otherwise some
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ƹCut down the main power switch immediately if some malfunction happens (such as burning
odor etc.).
ƹMaintain ventilation to prevent oxygen depletion in the room.
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ƹPlease make sure that the unit is installed in the place which can bear the weight of it
adequately. If the place is not strong enough, the air conditioner may drop and cause a
casualty event.
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be caused.
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move the conditioner.
Note!
Please check and make sure that the cord, drainage pipe and tubes are connected in the
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ƹThe main power must be connectable to the earth in order to assure the conditioner earthed
effectively and to prevent electric shock. Please don’t connect the earth lead with the gas pipe,
water pipe, lightning rod or the telephone line.
ƹThe air conditioner should be turned off at least after 5 minutes’ operation; otherwise it would
affect the duration of the unit.
ƹDon’t let the children operate the air conditioner.
ƹPlease don’t operate the unit by wet hands.
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ƹPlease cut off the main power if the conditioner is not to be used for long time.

2
2 Installation of the Cassette Type Indoor Unit
2.1 Schematic Diagram of Installation Spaces
H
Ground
surface
Wall
surface
Wall
surface
Wall
surface
>20
unit:mm
Fig. 1
2.2 Selection of the Installation Location of the Indoor Unit
(1). Obstruct should be put away from the intake or outlet vent of the indoor unit so that the
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(2). Make sure that the installation accords with the requirement of the schematic diagram of
installation spaces.
(3). Select the place where can stand 4 times of the weight of the indoor unit and will not
increase the operating noise and vibration.
(4). The installation place should be guaranteed to be horizontal.
(5). Select the place where condensate water can easily be drained out and access to the
outdoor unit.
(6). Make sure that there is enough space for care and maintenance and the height between the
indoor unit and ground is above 1800mm.
(7). When installing the steeve bolt, check if the installation place can stand 4 times of the weight
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where should be reinforced)
Note!
There will be lots of lampblack and dust stuck to the heat exchanger and water pump in the
dining room and kitchen, which would reduce the capacity of the heat exchanger and lead water
leakage and abnormal operation of the water pump. The following treatment should be taken under
this circumstance:
ķ
Ensure that the smoke trap above the cooker is capable of preventing indraft of lampblack by
the air conditioner.
ĸ
Keep the air conditioner far from the kitchen so that the lampblack would not be taken in by
the air conditioner.

3
2.3 Important Notices
To guarantee the good performance, the unit shall be installed by professional personnel
according to this instruction.
Please contact the local DELTA nominated service center before installation. Any malfunction
caused by the unit that is installed not by DELTA nominated service center would not be dealt with on
time owing to inconvenience of the business contact.
2.4 Dimension of the Ceiling Opening and Location of the Hoisting Screw (M10)
780(Gaps between hoisting screw rods)
840(Indoor unit)
890*(Ceiling opening)
950(Decorated surface boards)
950(Decorated surface boards)
890(Ceiling opening)
840(Indoor unit)
680(Gaps between hoisting screw rods)
A
Hoisting screw (X4)
Refrigerant pipe
Installation Dimensions
 The drilling of holes in the ceiling must be done by the professional personnel.
(160)
Ceiling
Installation stands for main body of the unit
Above 20
Fig. 2
Note:
The dimension for the ceiling openings with * marks can be as large as 910mm, but the
overlapping section of the ceiling and the decorated surface boards should be maintained no less
than 20mm.

4
2.5 Main body for Hoisting the Air Conditioner
(1). Primary Step for Installing the Indoor Unit
ƔWhen attaching the hoisting stand on the hoisting screw, do use nuts and gaskets individually
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prevent the gasket from breaking off.
(2). Use of the Installation Reference Cardboard
ƔPlease refer to the reference cardboard about the dimensions of the ceiling opening.
ƔThe center of the ceiling opening is marked on the reference cardboard.
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pipe at the outlet vent by bolts.
(3). Adjust the unit to the suitable installation place. (Refer to Fig. 2)
(4). Check if the unit is horizontal.
ƔThe inner drainage pump and the float switch are included in the indoor unit. Check if 4
corners of every unit are horizontal to water lever. (If the unit is slant toward the opposite of the
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ƔBackout the gasket anchor board used to prevent the gasket from breaking off and tighten the
nut on it.
(5). Backout the reference cardboard.
Note! Please do tighten the nuts and bolts to prevent the air conditioner break off.
2.6 Connection of the Refrigerant Pipe
ƔWhen connecting the pipe to the unit or backout it from the unit, please do use both the spanner
and the torque wrench, as shown in Fig. 3.
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hand tight and then tighten it with the spanner.
ƔRefer to Table 1 to check if the wrench has been tightened properly (too tight would mangle the
nut and lead to leakage).
ƔExamine the connection pipe to see if it leaks, then take the treatment of heat insulation, as
shown in Fig. 3.
ƔOnly use the medium-sized sponge to entwine the connector of the gas pipe and heat insulation
sheath of the gas header.

5
Thread fasten(x4)
Heat preservation
sheath of gas collection
tube (attachment)(for
gas tube)
Heat preservation
sheath of liquid inlet
tube (attachment) (for
liquid tube)
Flare nut
Wiring interface
Spanner
Liquid inlet tube
Gas collection tube
Torque wrench
Median sponge (attachment)
(entwine the wiring interface
with seal mat)
Smear freeze motoroil
here
Fig. 3
Table 1: Tightening Torques Needed for Tightening Nut
Diameter(Inch) Surface thickness(mm) Tightening torque (N·m)
ij  15-30 (N·m)
ij  30-40 (N·m)
ij  45-50 (N·m)
ij  60-65 (N·m)
ij  70-75 (N·m)
2.7 Drainage Hose
ƔThe diameter of the drain hose should be equal or larger than the connection pipe’s. (polythene
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ƔThe drain hose should be as short as possible and should slant downward at a minimum
gradient of 1/100 to prevent formation of air pockets.
ƔIf the gradient of the drain hose is too small, a raising pipe should be added.
ƔTo prevent the drain hose from bending, the distance between the hoisting stands should be 1 to
1.5m.
×(wrong)
ƻ(Correct) 1/100 or more gradient
P
ƔInsert the drain hose to the drain outlet and then tighten the clamp attached.
ƔEntwine the large-sized sponge on the clamp of the drain hose for heat insulation.
ƔHeat insulation should be done to the indoor drain hose.
Below 4mm
Sponge(attachment)
Clamp(attachment)
Clamp
Drain hose
Sponge (gray)

6
ƔThe slant gradient of the attached drain hose should be within 75mm so that the drain hole won’t
have to endure the unnecessary outside force.
ƔPlease install the drain hose according to the following process if several drain hoses join
together.
below 500mm
.
below 75mm
Drain hose(attachment)
Above100mm
The specs of the selected join drain hose should fits the running capacity of the unit.
.
T-tie in join drain hose
2.8 Drain Raising Pipe
ƔThe installation height of the raising pipe should be less than 280mm.
ƔThe drain rasing pipe should form a right angle with the unit, and distance to unit should not be
larger than 300mm.
below
500mm
Within 300mm
Drain raising
hose
220mm
Ceiling Clamp(attachment)
Hoisting stand
Roof
Drain hose
1-1.5m below280mm
(attachment)
2.9 Drainage Check
ƔCheck the smoothness of drainage after installation.
ƔCheck the drainage state by injecting 600cc water slowly from the outlet vent or test hole.
ƔAfter electric wiring, check the drainage state when the unit is performing cooling.
Drain hose Test hole cover
Test hole
Above100mm
Drain vent for repair use (plastic
stopper is included) (drain the water
in waterspout by this outlet vent)
<
Immiting water from the outlet vent terminal
>
Plastic water container (The length of the
pipe should be about 100mm.)
< Immiting water from the rest hole >

7
2.10 Electrical Wiring
Note: The entire indoor unit shall have the uniform power supply.
ƔAbout the electrical wiring, please see the circuit diagram attached to the unit.
ƔAll electrical wiring shall be done by professional personnel.
ƔPlease do take the earthing treatment.
ƔWiring method of the unit and the controller
ƔConnection wiring (communication):
ķ
Open the electric box cover(1), drag the wiring (communication)from the rubber plug A, and
secure them well individually by fasteners.
ĸ
Wiring according to the indoor side circuit diagram.
ƔFix the fasteners after connection.
ƔWrap the small-sized sponge on the electric wire ( do entwine it to prevent condensation).
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and (2).
ƔConnect the 3-wire rubber-covered cable to the corresponding terminal on the terminal board.
Cable-cross loop
Electric box cover˄1˅
Do seal here to prevent
water inleakage from here
Electric box cover˄2˅
3 core rubber wire
NL
Cable-cross loop
N
power supply
3 core rubber wire
3 way terminal board
Impact fastener
L
(1). Power Cord Size and Air Switch Capacity
Model Power Supply Air Switch
Capacity (A)
Minimum Sectional Area
of Ground Wire (mm2)
Minimum Sectional Area
of Power Cord (mm2)
80CS010J24 208-230V ~60Hz 6 1.0 1.0
80CS013J24 208-230V ~60Hz 6 1.0 1.0
80CS016J24 208-230V ~60Hz 6 1.0 1.0
80CS020J24 208-230V ~60Hz 6 1.0 1.0
80CS025J24 208-230V ~60Hz 6 1.0 1.0
80CS032J24 208-230V ~60Hz 6 1.0 1.0
80CS040J24 208-230V ~60Hz 6 1.0 1.0
80CS044J24 208-230V ~60Hz 6 1.0 1.0
80CS048J24 208-230V ~60Hz 6 1.0 1.0

8
Notes:
ķ
The size of circuit breaker and power cord in above sheet is selected based on the max
power (max current) of unit.
ĸ
Above selection requirements of power cord size: Power cord size is based on multicore
copper core cable with operation temperature of 90°C when laying on wire groove at 40°C ambient
temperature (IEC 60364-5-523). If the operation condition is different, please calculate according to
national standard.
Ĺ
Above selection requirements of circuit breaker size: Circuit breaker size is based on ambient
temperature of 40°C when the circuit breaker is working. If the operation condition is different, please
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(2). Install circuit breaking device near the unit. The minimum distance between each stage of
circuit breaking should be 3mm (The same for both indoor unit and outdoor unit).
2.11 Function Description of Functional DIP Switch S7
(1). The 3-bit DIP switch must be set before the main board is energized and it determines the
running state of the indoor unit.
(2). DIP switch functions are described as below.
DIP Switch Function ON OFF
1(S/R)
Selection of the memory mode:
A.Selection between reset mode and standby mode after energizing
B.This function is available without the wired controller.
Standby Reset
2(L/I)
Selection between the manual controller and the receiver
A.If the manual controller is selected, the remote control function of
the receiver will be disabled.
B.If the receiver is selected, the wired controller will be deactivated.
Wired
Controller Receiver
3(M/S)
Setting of the master and slave indoor units
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B.This function is available without the wired controller.
Master
Indoor Unit
Slave
Indoor Unit
2.12 Installation of the Panel
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panel to the piping position of the panel of the indoor unit as shown in Fig. 4.
(2). Installation of the Panel
ķ
Install the panel on the indoor unit temporarily. When installing, hang the latch on the hook
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ĸ
Hang the remaining 2 latches to the hooks on the sides of the indoor unit.(Be careful not to
let the swing motor lead wire get caught in the sealing material.)
Ĺ
Screw the 4 hexagon head screws under the latches inward by about 15mm. (The panel
would rise)
ĺ
Adjust the panel by turning it toward the direction pointed by the arrow as shown in Fig. 4 so
that the panel can match the ceiling very well.
Ļ
Tighten the screws until the thickness of the sealing material between the panel and the
indoor unit is reduced to 5-8mm.

9
Ļ
.
ĸ
ĺ
Ĺ
ĸ
ķ
Latch
Hook
Ceiling
5mm to 8mm
Decoration panel
Sealing material
Indoor unit
Air outlet vent
Swing flap motor
Piping positio n
Fig. 4
Note!
ķ
Improper screwing of the screws may cause the troubles shown in Fig. 5.
Water condensatation, water drop
Air leak from ceiling
Air leak
Fig. 5
ĸ
If the gap still exists between the ceiling and the decoration panel after tightening the
screws, readjust the height of the indoor unit. (As shown in Fig. 6)
If the raising lever and drain hose are
not affect, can adjust the height of
indoor unit by the hole on the corner
of panel.
Gaps are not allowed
Fig. 6
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(3). Wiring of the Decoration Panel (Fig. 7)
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10
At body At pane
At paneAt body
Fig. 7

Multi Variable Air Conditioners Cassette Type Indoor Unit
11
3 Structure and Part Name of the Cassette Type Indoor Unit
Air inlet grille
Air filter, purifier (in
air inlet grille )
Air outlet vent
Guide louver
(placed in air
outlet vent)
Connecting pipe
Drainage
hose
Drainage equipment (inside type)
Discharge condensate water from
indoor unit when cooling
4 Working Temperature Range
Working Temperature Range
Indoor side state Outdoor side state
Dry bulb temp.°C Wet bulb temp. °C Dry bulb temp. °C Wet bulb temp.°C
Rated cooling 27 19 35 24
Max. cooling 32 23 43 26
Min. cooling 21 15 18 —
Rated heating 20 15 7 6
Max. heating 27 — 24 18
Min. heating 20 15 -15 -16
80CS010J24
80CS013J24
80CS016J24
80CS020J24
80CS025J24
80CS032J24
80CS040J24
80CS044J24
80CS048J24

12
5 Wired Controller and Wireless Controller
5.1 Wired Controller
SPEED
AUTO
ROOM TEMP
SWING
HOUR
SET TEMP
MELT
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
MODE
FAN
SWING
TIMER
ON/OFF
Fig. 8
Every Part of the Wired Remote Controller
1 Operating mode display (Cool, Dry, Fan, Heat) 9 On/Off button
2 Sleep mode display 10 Timer button
3 Environmental temp. display /Malfunction display 11 Sleep button
4 Fan control display (automatic, high, media, low) 12 Swing display
5 Set Temp. display 13 Fan control button
6 Defrosting display 14 Temp./ Timer decrease button
7 Timer display 15 Temp./ Timer increase button
8 Signal receiver 16 Mode button
ƹOn/Off (Fig. 9)
When pressing the ON/OFF button, the unit will start.
When pressing the ON/OFF button again, the unit will stop.
SWING
ON/O FF
TIMER
FAN
MODE
Fig. 9
Note: The display in Fig. 2 is the turn-off state after the power supply is applied. When the
power supply is applied and the communication is normal, the environmental temperature will be

13
displayed on LCD no matter the unit is turned on or off. At this time, as shown in Fig. 3 there is no
graticule displayed on LCD, which means that the air conditioner is turned off.
ƹTimer setting (Fig. 10 ):
Press TIMER under the OFF state to set the ON time and press TIMER under the ON state to
set the OFF time.
Under the circumstance without the setting time ( there isn’t information in the Timer Zone),
press TIMER, then the LCD will display the pattern of “ xx.x HOUR”, and also the“ ”and“HOUR”will
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once more and the pattern“ ”and “HOUR” will no longer blink, which indicates that TIMER has been
set.
Press TIMER once the unit is energized, and “ 0.5 HOUR” will be displayed and both
patterns will blink on the LCD, next, repress TIMER once again, then the TIMER pattern will
disappear, which indicates that the TIMER setting has been cancelled.
Under the circumstance that the TIMER time has been set ( i.e. the state that “
”and“HOUR”don’t blink), repress TIMER, then the “ xx.x HOUR” will be displayed on the LCD again
(note:“xx.x” indicates the set time last time, and will be cancelled after the controller is energized),
and both “ ´DQG³+285´ZLOOEOLQNDWWKLVWLPHDGMXVW³Ÿ´RU³ź´WRUHVHWWLPHURUUHSUHVV7,0(5WR
FRQ¿UPWKH7,0(5VHWWLQJ
7KH7,0(5VHWWLQJUDQJHVIURPKRXUV(YHU\VLQJOHSUHVVRI³Ÿ´RU³ź´ZLOOPDNHWKH
setting increased or decreased by 0.5 hour, and the long-term press will make the setting increased
or decreased by 0.5 hour every 0.5s, ranging from 0.5 to 24.
MODE
ON/OFF
TIMER
FAN
SWING
ROOM TEMP
HOUR
Fig. 10
ƹ³Ÿ´EXWWRQ
ƹ³ź´EXWWRQ
ƹSLEEP Setting (Fig. 11)
 Under the COOL or DRY mode, after receiving the SLEEP order for 1 hour, the previous set
temperature will rise by 1°C, and another 1°C after 2 hours, that is, the temperature rises by 2°C
within 2 hours. Then the unit will run at this set temperature.
Under the HEAT mode, after receiving the SLEEP order for 1 hour, the previous set
temperature will drop by 1°C, and another 1°C after 2 hours, that is, the temperature drops by 2°C

14
within 2 hours. Then the unit will run at this set temperature.
There is no SLEEP mode under the FAN mode.
Note: The SLEEP button is not available for the wired remote controller. If required, this
function should be performed through the wireless remote controller.
Fig. 11
ƹSwing Control(Fig. 12)
Press the Swing button and then the swing mode will be operated by the air conditioner.
Repress the Swing button once to stop the swing mode.
SWING
ROOM TEMP
SWING
Fig. 12
Note: There is no swing mode for the duct type indoor unit
ƹFan Speed Control(Fig. 13)
Every press of the fan speed button will change the fan speed according to the following
order:
Under the DRY mode: The fan will be set to the low speed automatically.

15
SWING
ROOM TEMP
Fig. 13
ƹTemperature Adjustment (Fig. 14)
8QGHUWKHVWDWHZLWKRXWWKHWLPHVHWWLQJSUHVV³Ÿ´DQG³ź´WRDGMXVWWKHWHPSHUDWXUH
Ÿ7RULVHWKHVHWWHPSHUDWXUH
ź7RUHGXFHVHWWHPSHUDWXUH
(Every press of this button will increase or decrease the temperature by 1°C.)
Temperature adjustment ranges 16°C~30°C under any running mode.
SWING
Fig. 14
ƹSetting of the Running Mode (Fig. 15)

16
SWING
Fig. 15
Every press of the Mode button will change the running mode according to the following
order:
Under the COOL mode, the display of the COOL icon will on. The set temperature should be
lower than the present room temp. If not, the air conditioner would not perform cooling.
Under the DRY mode, the display of the DRY icon will on. Fan will run at the low speed in
VRPHFHUWDLQWHPSHUDWXUHUDQJH7KHHI¿FLHQF\XQGHUWKLVPRGHLVEHWWHUWKDQWKDWXQGHUWKH&22/
mode and saves more energy.
Under the HEAT mode, the display of the HEAT icon will on. The set temperature should be
higher than the room; If not, the air conditioner would not perform heating.
Under the FAN mode, the display of the FAN icon will on.
ƹError Display (Fig. 16)
Fig. 16
When some error happens, the error code will be shown in the environmental temperature
display zone. Fig. 9 indicates that the compressor is under high pressure protection.
When some error happens, except the FAN mode under which the unit will still work normally,

17
the outdoor unit and fan will stop under the COOL, DRY and HEAT mode, but the LCD display will not
be affected.
When some error is displayed on the controller, please turn off the unit to stop and has it
repaired by the specialized personnel.
The meaning of each error code is described
Error Code Descritpion
E1 High pressure protection of the compressor
E2 Indoor anti-freeze protection
E3 Low pressure protection of the compressor
E4 Discharge temperature protection of the compressor
E5 Compressor overload protection
E6 Communication error
E7 0RGHVFRQÀLFW
F0 Indoor environment temperature sensor error
F1 Indoor coil inlet temperature sensor error
F2 Indoor coil mid-way temperature sensor error
F3 Indoor coil outlet temperatudre sensor error
F4 Outdoor environment temperature sensor error
F5 Outdoor coil inlet temperature sensor error
F6 Outdoor coil mid-way temperature sensor error
F7 Outdoor coil outlet temperature sensor error
F8 Discharge temperature sensor 1 (rated frequency) error
F9 Discharge temperature sensor 2 (digital) error
FA Oil temperature sensor 1 (rated frequency) error
Fb Oil temperature sensor 2 (digital) error
Fc High pressure sensor error
Fd Low pressure sensor error