Delta INSPIRE Ultra 20 User manual

www.delta-dct.com
MINI SPLIT INVERTER- INSPIRE Ultra 20
INSTRUCTION MANUAL
WARNING!
Read and follow all safety precautions in
Instruction Manual - improper use can cause
serious injury.
26WD012I24-035DWKXZ

This 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.
Children should be supervised to ensure they are away from the appliance.
Do not dispose this product as unsorted municipal waste. Collection of
such waste separately for special treatment is necessary.
Content
Operation Notices
Precautions............................................................................................................1
Parts name............................................................................................................6
Screen Operation Guide
Buttons on remote controller .................................................................................7
Introduction for icons on display screen ................................................................7
Introduction for buttons on remote controller.........................................................8
Function introduction for combination buttons.....................................................12
Operation guide...................................................................................................13
Replacement of batteries in remote controller.....................................................13
Emergency operation ..........................................................................................14
Maintenance
Clean and maintenance.......................................................................................14
Malfunction
Malfunction analysis............................................................................................17
Installation Notice
Installation dimension diagram............................................................................21
Tools for installation.............................................................................................22
Selection of installation location ..........................................................................22
Requirements for electric connection..................................................................23
Installation
Installation of indoor unit......................................................................................24
Installation of outdoor unit ...................................................................................29
Vacuum pumping.................................................................................................32
Leakage detection...............................................................................................32
Check after installation........................................................................................33
Test and operation
Test operation......................................................................................................33
Attachment
Conguration of connection pipe.........................................................................34
Pipe expanding method.......................................................................................36

1
Precautions
Warning
Do not connect air conditioner to multi-purpose socket.
This appliance can be used by children aged from 8
Operation and Maintenance
If the supply cord is damaged, it must be replaced by
the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
Do not spray water on indoor unit. It may cause electric
shock or malfunction.
Otherwise, it may cause fire hazard.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by
children without supervision.
years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe
way and understand the hazards involved.
Do not wash the air conditioner with water to avoid
electric shock.
After removing the filter, do not touch fins to avoid injury.
Do not use fire or hair dryer to dry the filter to avoid
deformation or fire hazard.
Do disconnect power supply when cleaning air
conditioner. Otherwise, it may cause electric shock.

Do not block air outlet or air inlet. It may cause
malfunction.
remote controller may be broken.
●Power cord is overheating or damaged.
●There’s abnormal sound during operation.
●Circuit break trips off frequently.
●Air conditioner gives off burning smell.
●Indoor unit is leaking.
contact the dealer or qualified professionals for service.
When turning on or turning off the unit by emergency
operation switch, please press this switch with an insulating
object other than metal.
outlet. It may cause personal injury or damage.
2
Precautions
Warning
conditioner and disconnect power immediately，and then
If the air conditioner operates under abnormal conditions,
it may cause malfunction，electric shock or fire hazard.
Do not spill water on the remote controller, otherwise the
electric shock or damage. Please contact dealer when
you need to repair air conditioner.
Do not repair air conditioner by yourself. It may cause
objects. It may cause damage or personal injury.
Do not step on top panel of outdoor unit, or put heavy
When below phenomenon occurs, please turn off air
Do not extend fingers or objects into air inlet or air
Maintenance must be performed by qualified
professionals. Otherwise, it may cause personal injury
or damage.

Do install the circuit break. If not, it may cause malfunction.
of at least 3mm in all poles should be connected in fixed
wiring.
magnet buckle and heating buckle function, it can protect
the circuit-short and overload.
power supply circuit and circuit break.
3
Precautions
Warning
note the following table.Air switch should be included
Make sure the power supply matches with the
requirement of air conditioner.Unstable power supply or
incorrect wiring or malfunction. Please install proper power
supply cables before using the air conditioner.
An all-pole disconnection switch having a contact separation
Must follow the electric safety regulations when installing
the unit.
grounding wire of power socket.
Properly connect the live wire, neutral wire and
any work related to electricity and safety.
Be sure to cut off the power supply before proceeding
Including an circuit break with suitable capacity, please
Air Conditioner should be properly grounded. Incorrect
Don't use unqualified power cord.
grounding may cause electric shock.
According to the local safety regulations, use qualified
Installation must be performed by qualified professionals.
Otherwise, it may cause personal injury or damage.
Attachment

Installation must be performed in accordance with the
persons in order to avoid a hazard.
must be properly grounding with specialized grounding
device by a professional. Please make sure it is always
grounded effectively, otherwise it may cause electric shock.
The appliance must be positioned so that the plug is
accessible.
If the length of power connection wire is insufficient，please
contact the supplier for a new one. Avoid extending the
wire by yourself.
All wires of indoor unit and outdoor unit should be
connected by a professional.
national wiring regulations.
requirement of NEC and CEC by authorized personnel
only．
4
Precautions
Warning
wire, which can't be used for other purposes.
The grounding resistance should comply with national
electric safety regulations.
The air conditioner is the first class electric appliance. It
keep the interconnection cable away from the copper
tube.
The temperature of refrigerant circuit will be high, please
the manufacturer, its service agent or similarly qualified
If the supply cord is damaged, it must be replaced by
The yellow-green wire in air conditioner is grounding
The appliance shall be installed in accordance with
Do not put through the power before finishing installation.

The indoor unit should be installed close to the wall
reachable after finishing installation.
far away from animals or plants.If it is unavoidable,
please add the fence for safety purpose.
5
Precautions
Warning
place, only the qualified person can perform the work.
Otherwise, it may cause personal injury or damage.
If you need to relocate the air conditioner to another
must be installed in the line.
For the air conditioner without plug, an circuit break
Select a location which is out of reach for children and
For the air conditioner with plug,the plug should be
Working temperature range
Indoor side DB/WB(℉) Outdoor side DB/WB(℉)
Maximum cooling 95/75 115/86
Maximum heating 70/59 70/--
● The operating temperature range (outdoor temperature) for cooling unit is
0.4℉~109.4℉.

6
(Display content or position may be different from above
graphics, please refer to actual products)
Parts name
Indoor Unit
Outdoor Unit
air inlet
panel
lter
aux.button
horizontal louver
air outlet
heating
indicator temp. indicator
cooling
indicator power indicator receiver window
drying
indicator
display
remote control
Notice:
Actual product may be different from above graphics, please refer to actual
products.
air inlet
Connection wire
air outlet

7
Buttons on remote controller
Introduction for icons on display screen
1
2
5
7
9
11
10
12
8
6
4
3
1
2
3
4
5
6
7
8
9
10
11
12
ON/OFF button
MODE button
+/- button
FAN button
button
X-FAN button
Note: X-FAN is the same with BLOW
TEMP button
TURBO button
LIGHT button
SLEEP button
TIMER ON/TIMER OFF
button
CLOCK button
Send signal
Turbo mode
Set temperature
Set time
TIMER ON / TIMER OFF
Child lock
Up & down swing
Set fan speed
X-fan mode
Light
Temp. display type
:Set temp.
:Outdoor ambient temp.
:Indoor ambient temp.
Sleep mode
Clock
Heat mode
Fan mode
Dry mode
Cool mode
Auto mode
Operation mode

8
● When selecting auto mode, air conditioner will operate automatically according
to ex-factory setting. Set temperature can’t be adjusted and will not be displayed
as well. Press "FAN" button can adjust fan speed. Press " " button can adjust
fan blowing angle.
● After selecting cool mode, air conditioner will operate under cool mode. Cool
indicator " "on indoor unit is ON. Press "+" or "-" button to adjust set tempe-
rature. Press "FAN" button to adjust fan speed. Press " " button to adjust fan
blowing angle.
● When selecting dry mode, the air conditioner operates at low speed under dry
mode. Dry indicator " " on indoor unit is ON. Under dry mode, fan speed can’t
be adjusted. Press " " button to adjust fan blowing angle.
● When selecting fan mode, the air conditioner will only blow fan, no cooling and
no heating. All indicators are OFF. Press "FAN" button to adjust fan speed. Press
" " button to adjust fan blowing angle.
● When selecting heating mode, the air conditioner operates under heat mode.
Heat indicator " " on indoor unit is ON. Press "+" or "-" button to adjust set
temperature. Press "FAN" button to adjust fan speed. Press " " button to adjust
fan blowing angle. (Cooling only unit won’t receive heating mode signal. If setting
heat mode with remote controller, press ON/OFF button can’t start up the unit).
Note:
● For preventing cold air, after starting up heating mode, indoor unit will delay 1~5
minutes to blow air (actual delay time is depend on indoor ambient temperature).
● Set temperature range from remote controller: 16~30°C(61~86°F); Fan speed:
auto, low speed, medium speed, high speed.
Introduction for buttons on remote controller
Note:
● After putting through the power, the air conditioner will give out a sound.
Operation indictor " " is ON (red indicator). After that, you can operate the air
conditioner by using remote controller.
ON/OFF button
MODE button
1
2
Press this button can turn on or turn off the air conditioner. After turning on the air
conditioner, operation indicator " "on indoor unit’s display is ON (green indicator.
The colour is different for different models), and indoor unit will give out a sound.
Press this button to select your required operation mode.
AUTO COOL FANDRY HEAT

9
Introduction for buttons on remote controller
FAN button
4
Pressing this button can set fan speed circularly as: auto (AUTO), low( ) ,medium
( ), high( ).
Auto
Note:
● Under AUTO speed, air conditioner will select proper fan speed automatically
according to ex-factory setting.
● Fan speed under dry mode is low speed.
5
Press this button can select up&down swing angle. Fan blow angle can be selected
circularly as below:
● When selecting " ", air conditioner is blowing fan automatically. Horizontal
louver will automatically swing up & down at maximum angle.
● When selecting " 、、、、
● When selecting " 、、
● Hold " "button above 2s to set your required swing angle. When reaching your
required angle, release the button.
Note:
● " 、、 " may not be available. When air conditioner receives this signal, the
air conditioner will blow fan automatically.
button
no display
(horizontal louvers stops
at current position)
+/- button
3
● Press "+" or "-" button once increase or decrease set temperature 1℃(1°F).
Holding "+" or "-" button, 2s later, set temperature on remote controller will
tor on indoor unit will change accordingly. (Temperature can’t be adjusted under
auto mode)
● When setting TIMER ON, TIMER OFF or CLOCK, press "+" or "-" button to
adjust time. (Refer to CLOCK, TIMER ON, TIMER OFF buttons) When setting
TIMER ON, TIMER OFF or CLOCK, press "+" or "-" button to adjust time. (Refer
to CLOCK, TIMER ON, TIMER OFF buttons)

10
Press this button to set clock time. " " icon on remote controller will blink. Press
"+" or "-" button within 5s to set clock time. Each pressing of "+" or "-" button, clock
time will increase or decrease 1 minute. If hold "+" or "-" button, 2s later, time will
change quickly. Release this button when reaching your required time. Press
Note:
● Clock time adopts 24-hour mode.
●The interval between two operation can’t exceeds 5s. Otherwise, remote contro-
ller will quit setting status. Operation for TIMER ON/TIMER OFF is the same.
CLOCK button
6
Introduction for buttons on remote controller
TIMER ON / TIMER OFF button
7
●TIMER ON button
"TIMER ON" button can set the time for timer on. After pressing this button, " "
icon disappears and the word "ON" on remote controller blinks. Press "+" or "-"
button to adjust TIMER ON setting. After each pressing "+" or "-" button, TIMER
ON setting will increase or decrease 1min. Hold "+" or "-" button, 2s later, the
time will change quickly until reaching your required time.
resumes displaying. Cancel TIMER ON: Under the condition that TIMER ON is
started up, press "TIMER ON" button to cancel it.
●TIMER OFF button
"TIMER OFF" button can set the time for timer off. After pressing this button," "
icon disappears and the word "OFF" on remote controller blinks. Press "+" or "-"
button to adjust TIMER OFF setting. After each pressing "+" or "-" button, TIMER
OFF setting will increase or decrease 1min. Hold "+" or "-" button, 2s later, the
time will change quickly until reaching your required time.
Press "TIMER OFF" word "OFF" will stop blinking. " " icon resumes displaying.
Cancel TIMER OFF. Under the condition that TIMER OFF is activating up, press
"TIMER OFF" button to cancel it.
Note:
● Under on and off status, you can set TIMER OFF or TIMER ON simultaneously.
● Before setting TIMER ON or TIMER OFF, please adjust the clock time.
●After activating up TIMER ON or TIMER OFF, set the constant circulating valid.
After that, air conditioner will be turned on or turned off according to setting time.
ON/OFF button has no effect on setting. If you don’t need this function, please
use remote controller to cancel it.

11
TEMP button
9
Introduction for buttons on remote controller
By pressing this button, you can see indoor set temperature, indoor ambient temp-
erature or outdoor ambient temperature on indoor unit’s display. The setting on
remote controlleris selected circularly as below:
no display
● When selecting " " or no display with remote controller, temperature indicator
on indoor unit displays set temperature.
● When selecting " " with remote controller, temperature indicator on indoor unit
displays indoor ambient temperature.
● When selecting " " with remote controller, temperature indicator on indoor unit
displays outdoor ambient temperature.
Note:
● Outdoor temperature display is not available for some models. At that time, indoor
unit receives " "signal, while it displays indoor set temperature.
● It’s defaulted to display set temperature when turning on the unit.There is no
display in the remote controller.
● Only for the models whose indoor unit has dual-8 display.
● When selecting displaying of indoor or outdoor ambient temperature, indoor
temperature indicator displays corresponding temperature and automatically turn
to display set temperature after three or ve seconds.
X-FAN button
8
Press this button under cool and dry mode to start up x-fan function, and " " icon
on remote controller will be displayed. Press this button again to cancel x-fan
function, and " "icon will disappear.
Note:
● When x-fan function is on, if the air conditioner is turned off, indoor fan will still
operate at low speed for a while to blow the residual water inside the air duct.
● During x-fan operation, press X-FAN button to turn off x-fan function. Indoor fan
will stop operation immediately.
TURBO button
10
Under COOL or HEAT mode, press this button to turn to quick COOL or quick
HEAT mode. " " icon is displayed on remote controller. Press this button again
to exit turbo function and " " icon will disappear.

12
Function introduction for combination buttons
Child lock function
Press "+" and "-" simultaneously to turn on or turn off child lock function. When
child lock function is on, " " icon is displayed on remote controller. If you operate
the remote controller, the " " icon will blink three times without sending signal to
the unit.
Temperature display switchover function
Under OFF status, press "-" and "MODE" buttons simultaneously to switch temp-
erature display between ℃and ℉.
Introduction for buttons on remote controller
Press this button to turn off display light on indoor unit. " " icon on remote
controller disappears. Press this button again to turn on display light. " " icon is
displayed.
Under COOL, HEAT or DRY mode, press this button to start up sleep function.
" " icon is displayed on remote controller. Press this button again to cancel sleep
function and " " icon will disappear.
SLEEP button
LIGHT button
11
12

13
1. After putting through the power, press "ON/OFF" button on remote controller to
turn on the air conditioner.
2. Press "MODE" button to select your required mode: AUTO, COOL, DRY, FAN,
HEAT.
3. Press "+" or "-" button to set your required temperature. (Temperature can’t be
adjusted under auto mode).
4. Press "FAN" button to set your required fan speed: auto, low, medium and high
speed.
5. Press " " button to select fan blowing angle.
Operation guide
Replacement of batteries in remote controller
1. Press the back side of remote controller marked
with " ", as shown in the g, and then push out
the cover of battery box along the arrow direction.
2. Replace two 7# (AAA 1.5V) dry batteries, and
make sure the position of "+" polar and "-" polar
are correct.
3. Reinstall the cover of battery box.
signal sender battery
Cover of battery box
remove
reinstall
Note:
● During operation, point the remote control signal sender at the receiving
window on indoor unit.
● The distance between signal sender and receiving window should be no
more than 8m, and there should be no obstacles between them.
● Signal may be interfered easily in the room where there is uorescent lamp
or wireless telephone; remote controller should be close to indoor unit during
operation.
● Replace new batteries of the same model when replacement is required.
● When you don’t use remote controller for a long time, please take out the
batteries.
● If the display on remote controller is fuzzy or there’s no display, please
replace batteries.

14
Emergency operation
If remote controller is lost or damaged, please use auxiliary button to turn
on or turn off the air conditioner. The operation in details are as below:
As shown in the g. Open panel, press aux. button to turn on or turn off the
air conditioner. When the air conditioner is turned on, it will operate under
auto mode.
aux. button
panel
Clean and maintenance
Note:
■ Turn off the air conditioner and disconnect the power before cleaning the air
conditioner to avoid electric shock.
■ Do not wash the air conditioner with water to avoid electric shock.
■ Do not use volatile liquid to clean the air conditioner.
Clean surface of indoor unit
When the surface of indoor unit is dirty, it is recommended to use a soft dry cloth
or wet cloth to wipe it.
Note:
● Do not remove the panel when cleaning it.

15
Clean and maintenance
1
2
3
4
Open panel
Pull out the panel to a certain ● Use dust catcher or water to
the water (below 45℃) to clean
it, and then put it in a shady
and cool place to dry.
panel cover tightly.
Note:
operating environment, cleaning frequency can be increased.

16
Clean and maintenance
Checking before operating-season
Checking after operating-season
1. Check whether air inlets and air outlets are blocked.
2. Check whether circuit break, plug and socket are in good condition.
4. Check whether mounting bracket for outdoor unit is damaged or corroded.
If yes, please contact dealer.
5. Check whether drainage pipe is damaged.
1. Disconnect power supply.
3. Check whether mounting bracket for outdoor unit is damaged or corroded.
If yes, please contact dealer.
Notice for recovery
1. Many packing materials are recyclable materials.
Please dispose them in appropriate recycling unit.
2. If you want to dispose the air conditioner, please contact local dealer or
consultant service center for the correct disposal method.

17
Malfunction analysis
General Malfunction analysis
Please check below items before asking for maintenance. If the malfunction still
Phenomenon Check items Solution
Indoor unit
can’t receive
remote
controller’s
signal or
remote
controller
has no
action.
● Whether it's interfered severely
(such as static electricity,stable
voltage)?
● Whether remote controller is
within the signal receiving
range?
● Whether there are obstacles?
● Whether remote controller is
pointing at the receiving
window?
● Is sensitivity of remote contro-
ller low; fuzzy display and no
display?
● No display when operating
remote controller?
● Fluorescent lamp in room?
● Pull out the plug. Reinsert
the plug after about 3min, and
then turn on the unit again.
● Signal receiving range is 8m.
● Remove obstacles.
●
Select proper angle and point
the remote controller at the re-
ceiving window on indoor unit.
● Check the batteries. If the
power of batteries is too low,
please replace them.
●Take the remote controller
close to indoor unit.
and then try it again.
● Check whether remote cont-
roller appears to be damaged.
If yes, replace it.
No air
emitted
from
indoor
unit
●Air inlet or air outlet of indoor
unit is blocked? ● Eliminate obstacles.
● Under heating mode, indoor
temperature is reached to set
temperature?
●After reaching to set temper-
ature, indoor unit will stop bl-
owing out air.
● Heating mode is turned on just
now? ● In order to prevent blowing out cold air, indoor unit will be
started after delaying for sev-
eral minutes, which is a nor-
mal Malfunction.