mundoclima MUCO-H6T Service manual

English
CL20390 to CL20391
www.mundoclima.com
Installation & Owner's
FLOOR STANDING
manual
MUCO-H6T

Contents
Notices for Use .............................................................4
Names of Each Part of the Unit ....................................6
Operation of Remote Controller ..................................12
Use and Maintenance
Clean and Care ...........................................................20
Troubleshooting .......................................................... 22
Installation Dimension Diagram ..................................28
Installation of Indoor Unit ............................................30
Installation of Outdoor Unit .........................................34
Test Operation and Check after Installation ...............37
Installation Service
Cautions for Operation .................................................1
Notes for Installation ...................................................25
Names and Functions of Each Part ..............................8
Adjustment of Swing ................................................... 18
The symbol stands for the items
which should be forbidden
The pictures about the unit in this Instruction may be different from the actual
ones.Please be subject to the actual one.
The symbol stands for the items
which should be followed

★
★
★
Please read the following carefully before operating.
WARNING
Once abnormality like burning
smell occurs,please cut off the power
supply immediately and then contact
may be damaged
and electric shock
with service center .
If the abnormality still exists, the unit
or fire may result.
Don't operate the air conditioner
with wet hand.
Never cut off or damage power
cord and signal wire. If they are
damaged,replace them with special
cord by professionals.
Special circuit must be adopted
for power supply to prevent fire.
Be sure to pull out the power
plug when the air conditioner is not
in use for a long time.
Otherwise, the accumulated dust
may cause overheating or fire.
Never damage the electric wire
or use the one which is not specified.
Otherwise, it may cause overheating
or fire.
During cleaning, please cut off
the power supply.
Cut off power supply
Otherwise, it may cause electric
shock or damage.
The power supply must adopt
special circuit with protection of air
switch and enough capacity.Do not
turn on or off the unit frequently to
protect the air conditioner.
The power supply and voltage
should keep stable. Electric compon-
Do not use octopus multipurpose
plug or mobile terminal board for
wire connection.
ents are easy to be damaged for high
voltage. Refrigeration system will be
damaged and compressor and electric
components won't operate if voltage
is too low.
Otherwise, it may cause electric shock.
★If the supply cord is damaged,
it must be replaced by the manufa-
cturer or its service agent or a sim-
ilarly qualified person in order to
avoid a hazard.
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 supervi-
sion or instruction concerning use
of the appliance by a person res-
ponsible for their safety.
Children should be supervised to
ensure that they do not play with
the appliance.
1
Cautions for Operation

Don't make windows and doors open
for a long time
during operation ofthe air
conditioner.
Keep pressurized spray,gas holder
and so on away from the indoor unit
It may cause fire or explosion.
Don't step on the top of the outdoor
unit or place anything on it.
There is the danger of fall of things or
Please note whether the installation
stand is firm enough or not.
If damaged, it may cause fall of the unit
and injury of people.
Don't attempt to repair the air condi-
tioner by yourself.
Improper repair may cause electric shock
or fire, so you should contact the service
center to repair.
Never insert any foreign matter into
the air conditioner to avoid damage of
the air conditioner. And never insert
your hands into the air outlets of indoor
and outdoor units.
The operation of cut-off valve of
outdoor unit must be performed by
professional personnel in order to
Never block the air inlet and outlet
of the indoor and outdoor units.
★
★
★
★
★
★★
★
avoid damage to compressor for
leakage of the system.
Earthing:the unit must be
earthed reliably!The earthing
wire should connect with special device
of buildings.
professional does not recognize.
It may reduce efficiency of the unit. It may reduce efficiency or cause stop of
the unit and even fire.
above1m .
people .
If not, please ask the qualified personnel
to install. Furthermore, don't connect each
wire to gas pipe, water pipe, drainage
pipe or any other improper places which
Cautions for Operation
2

★
★
★
★
★
Keep proper temp
difference between
room and outdoors
Don't insert your hands or stick into the air inlet or outlet. Select the most appropriate temperature.
Splashing water on the air conditioner may cause electric
shock and malfunction.
Don't apply the cold wind to the body for a long time or
Don't use the air conditioner for other purposes, such as
drying clothes, preserving foods, etc.
Don't place a space heater near the air conditioner.
Or CO toxicosis may occur for imcomplete burning.
Don't blow the wind to animals and plants directly.
It may cause a bad influence to them.
Don't strike the glass door with heavy things to avoid damage.
set too low temperature.
3
Cautions for Operation

Working Principle and Special Functions for Cooling
Principle:
Anti-freezing Function:
If the unit is running under cooling mode at low temperature, the surface of indoor heat
below ,the indoor microcomputer will make the compressor stop to protect the unit.
will decrease with the increase of outdoor temperature.
so that indoor ambient temperature will be decreased.By this principle,its cooling capacity
℃
exchanger will frost.When the temperature of indoor heat exchanger decreases to -2 or
Air conditioner absorbs heat from room and then transmit it outdoors for discharge of it,
Working Principle and Special Functions for Heating
*
*
*
*
*
Principle:
Defrosting:
defrosting function will act and heat running will briefly stop for 5-10min.
so that indoor temperature will be increased.
If outdoor temperature gets much lower, please operate with other heating equipments.
Note:By this principle,heating capacity of the unit will decrease with the decrease of outdoor
Air conditioner absorbs heat from outdoors and transmit into the room for distribution,
temperature.
When outdoor temperature is low with high humidity, the outdoor heat exchanger will
frost after the unit runs for a period of time, which affects heating. At this time, auto
malfunction.
During defrosting, the outdoor unit may emit vapor,which is due to rapid defrosting,not
During auto defrosting, both indoor and outdoor fans stop running.
The unit will resume heating after defrosting.
Notices for Use
Under heating mode, if indoor heat exchanger hasn't reached certain temperature under
the following three kinds of states, the indoor fan won't start to avoid blow of cold air (within
90s).
1. At the beginning of heating 2.After auto defrosting 3.Heat at ultra-low temperature
Anti-cold Air Function:
4

★ Condition that unit can't normally run
The protection devices may be active or inactive in certain temp range of the following table.
Under relative humidity above 80% (door and windows open) , long-time cooling or
dehumidifying , there will be dew dripping off near the air outlet.
About display of ambient temperature:
1.In order to prolong lifetime of compressor,the air conditioner will automatically control start
or stop of compressor according to actual condition. It will delay for a period of time to stop
although the ambient temperature reaches setting temperature.
2.Because of difference among different regions in the room, the air conditioner will automatically
supplement temperature to improve comfort.It is normal state that the temperature displayed
on the unit is different from that detected by the user.
Indoor side DB/WB(℃) Outdoor side DB/WB(℃)
Maximum cooling 32/23 43/-
Maximum heating 27/- 24/18
●The operating temperature range (outdoor temperature) is -7℃~ 43℃.
NOTICE:
5
Notices for Use

MUCO-48-H6T
6

remote controller
FAN
AUTO
OPER
HEALTH
AIR
FILTER
TURBO
ON/OFF
X-FAN
HOUR
HUMIDITY
ON/OFF
MODE
FAN
X-FAN
TURBO
TEMP TIMER
SLEEP LIGHT
MUCO-60-H6T
7

●
●
E-HEATER
Buttons function and displayer
ａｎｄ ａｎｄ
●
●
●
Names and Functions of Each Part
Function Buttons of Air Conditioner
Press this button, to turn on the unit.
When unit is turned on, the original
setting like Timer, Sleep function will
be canceled.Note: When the unit is
running in Dry mode, press ON/OFF
button that can turn on the unit directly.
ON/OFF ON/OFF Button
● When the unit start up running,
the status light will display in red
indicated as power turn-on and free-duty.
Mode Mode Button
Press the button, the circulating changes
of mode are shown as below:
Auto Cooling Dehumidification
Heating Air Supply
Auto: the controller will determine its
operation mode according to changes
of room temperatures under this mode.
Cooling: display cooling state.
Dehumidification: reduce temperature
and keep the setting room temperature
without any change.
Air supply: The compressor doesn't on
work and only the indoor blower is on
running under this mode.
Heating: Display the state of heating.
(Note: Single-cooling machine is not
equipped with heating mode)
Button
Under the situation without setting
the function, press and buttons,
the setting temperature goes up
and down 1 , the regulating range
is from 16 to 30
℃
℃ ℃.
Under the conditions of setting the
functions, can proceed with the
round-trip option of this function (set
and opposite direction of
circulation).
Keep pressing and buttons
for 3 seconds continuously, functions
of all buttons on the display panel
will be conductively-closed, and then
press any button, the buzzer will
ring once while "LC" is flashing for
three times on the location of double
8 and resume to normal display so
as to prompt users that the buttons
have been locked up.When keep
pressing again the two buttons for
another 3 seconds continuously,
the function of lockup will be removed
and resume to display in normal state.
Speed Function AMB. Mode ON/OFF
8

●
●
“→→→
→→”
●
E-HEATER
Names and Functions of Each Part
Function Buttons of Air Conditioner
Buttons function and displayer
Speed Function AMB. Mode ON/OFF
and and Buttons (Continued)
After switch-on at first time, if without
any button input:1. consecutively press
twice of buttons in 20 seconds and
soon access to the running of forced
heating.After the blades of blowing up
and down opens to the minimum position,
start up running of all loads, indoor and
outdoor high-speed blowers. All characters
will be displayed when the non-inductive
thermometer bulb is broken down. The
fault codes of breakdown will be displayed
when the inductive thermometer bulb is
broken down and then the buzzer rings.
After shutdown for five minutes or
receiving shutdown signal within 5
minutes, it enter the status of normal
standby. 2. consecutively press twice
of buttons in 20 seconds and soon
access to the running of forced cooling.
After the blades of blowing up and down
opens to the minimum position,start up
running of all loads, indoor and outdoor
high-speed blowers besides the four-
way valve and then the buzzer rings.
After shutdown for five minutes or
receiving shutdown signal within 5
minutes,it enter the status of normal
standby.
The 1 and 2 Functions are for trial use
only.
Speed Speed Button
Press this button, the speed can
shift in the circulation among of
Auto Low Medium High
Super Auto
Note: the function of forced low
speed under operation of dehumi-
dification is not available.
AMB. Button
Press this button, AMB.circulating
changes set forth below:
Energy saving Living Room
Conference/Office
Restaurant
Normal
●Adjustable method of AMB.
Button:The switch-on of AMB.mode
at first time is the default of normal
mode,when shutting down and
starting up again,the AMB. mod will
keep the setting status before last
shutting down. Under the modes of
energy-saving, conference/office
and restaurant,the sleep function
will be automatically cancelled.
And the sleep function is not
adjustable: sleep function is only
available on service for cooling,
dehumidification and heating under
normal mode.
AMB.
9

●
●
●
●
●
E-HEATER
Names and Functions of Each Part
Function Buttons of Air Conditioner
Buttons function and displayer
Speed Function AMB. Mode ON/OFF
AMB. AMB. Buttons (Continued)
Under the modes of living room,
restaurant, conference/office,The
setting temperature, speed, blowing
up and down as well as left and right
can be adjustable. If users change
the setting temperature, speed,
blowing up and down as well as
left and right, the operation will run
in accordance with the status of setting
adjustment.
The services setting of
blowing up and down as well as left
and right of next time start-up will be
remained before last shutdown while
the setting temperature and speed
will run with the default.
Under the energy-saving mode, while
the heating service is on running, the
setting temperature, speed, blowing
up and down as well as left and
right can be adjustable. If users
change the setting speed, blowing
up and down as well as left and right,
it will run according the status of users'
setting adjustment. But the setting
temperature under the energy-saving
cooling function can not be adjusted.
The modes of living room, restaurant,
conference/office can only be called
out by pressing buttons of air con-
ditioner panel. If receiving the sig-
nal from remote control when the
air conditioner is running the modes
of living room, restaurant, confere-
nce/office, it will exit from the abo-
vementioned modes and run acc-
ording to the modes of remote control.
Function Function Button
Under the status of switch-on, Every
●
time press the function button, the
settings of up and down, left and right,
drying, concurrent heating, timing, air
renewal, setting and room temperature
can be shifted in sequence. When a
certain character is flashing, it in-
dicates can proceed its setting and
go on setting by press buttons.
The action will be confirmed if
without receiving other operating
order in 5 seconds. Or press the
function button to leave for the confirm.
Press the function button under the
status of running drying service
can directly proceed shutdown.
Press the function button under
the status of shutdown and non-
drying can proceed timing setting.
AMB. AMB.Buttons (Continued)
10

●
●
●
●
●
●
●
●
●
●
●
●
●
E-HEATER
Names and Functions of Each Part
Function Buttons of Air Conditioner
Buttons function and displayer
Speed Function AMB. Mode ON/OFF
Setting
Display setting temperature.
Room temperature
Indicate temperature of indoor
circumstances.
Supper strong
When the typeface light is on, it
indicates setting the super strong
function.
Mode of save
Indicate mode of save.
Mode of room
Indicate mode of room.
Office mode
Indicate mode of office.
SAVE
ROOM
OFFICE
Mode of restaurant
Indicate mode of restaurant.
RESTAURANT
Common mode
Indicate common mode.
COMMON
Status of swing
Display status of swing.
Swing
BLOW Function
When the typeface light is on, it
indicates setting the BLOW function.
BLOW
TIMER Function
When the typeface light is on, it
indicates setting the timer function.
TIMER
SLEEP Function
When the typeface light is on, it
indicates setting the sleep function.
SLEEP
Status of swing
Display status of swing.
Swing
●
E-HEATER
This icon on the displayer turns
on,indicates that the E-HEATER
function turned on,the electrical
heating, according to a certain
condition, it can put into use.

FunctionE-HEATER
11

Operation of Remote Controller
●
AUTO
COOL
DRY
FAN
HEAT (Note:no for coolling
FAN FAN speed button
Press this button once,then fan speed will
change as below:
Auto
Low speed Middle speed
High speed
●
(＋/－)
16~30 ℃。
Names and functions of remote control buttons
Note: Be sure that there are no obstructions between receiver and remote controller; Don't drop
or throw the remote control; Don't let any liquid in the remote control and put the remote control
directly under the sunlight or any place where is very hot
.
Signal transmitter
Remote controller
ON/OFF
ON/OFF button
Press this button to start or stop the unit.It will
clear timer or sleeping function of last time.
●
only unit)
.PMET button
(＋/－)
Pressing +button , the setting temp will b e
increased by 1 .Pressing -button,the
setting temp. will be decreased by 1
The temp. will be changed quickly
the button continuously .Setting temp. range
℃
is
by pressing
●
Swing up and down button
℃
as below:
Press this button, the running mode will change
Mode button
MODE
Note:Under the Dry mode, the fan speed isn't
adjustable, low fan speed is imperative,
but when operating this button, the wireless
remote control will send this signal.
Simpleness swing mode is defaulted for wireless
remote control, in this mode, press this button,
●
●
●
could turn on or turn off the Up and down
swing function.
When unit is turned off, synchronously press
"+" and Up and down swing buttons, it could
be switched between the simpleness swing
mode and stationary swing mode, at this time,
blinks 2 seconds.
In Stationary swing mode, press this button,the
angle for Up and down swing as show in below:
When up and down swing louver is working,
when turn off the unit, the siwng louver will
●
immediately stop at current position.
shows up and down swing louver swings back
and forth as show in the above figure.
FAN
AUTO
OPER
HEALTH
AIR
FILTER
TURBO
ON/OFF
X-FAN
HOUR
HUMIDITY
ON/OFF
MODE
FAN
X-FAN
TURBO
TEMP TIMER
SLEEP LIGHT
12

Press this button, (display ), display
the presetting temperature; (display ),
display indoor ambient temperature,
If current display status is indoor ambient temp.
when received other remote control sginal,
then will display presetting temp., 5s later
return to ambient temp. display.
Other models haven't this function. But
pressing this button, the main unit will click
and keep the original status.
no signal display on the remote control).
●After powered on, displaying presetting
temperature is defaulted,(According to
customer requirements to display,if there
are no requirements,the presetting temp-
erature displaying is defaulted, there is
HEALTH function:there is no this function
for this unit. If press this key, the main unit
will click, but it also runs under original status.
wireless remote control, fan speed automatically
rotates, when repress this button, the fan speed
will run at previous setting fan speed.
Operation of remote control
TIMER
●
button
Timer button
Names and functionsof remote control buttons
HEALTH SAVE
HEALTH SAVE
NOTE: This Remote control is universal, it c o uld be used formany units, some buttons
of this control which are not availabl e to this unit will not be described below.
On the status of the unit on, press this
button to set timer off. On the status of
the unit off, press this button to set timer
off. Press this key once, words Hour on(off)
will appear and flicker. In which case, press
+/- button to adjust time (press+/- button
the setting time range is from 0.5 to 24 hr. ;
continuously to change timing value quickly
then remote controller will send out the signal
immediately and hour on/off will stop flickering.
If the time of that no press timer button
under flickering status is above 5s,the timer
setting will quit. If the timer has been set,
press this button once again to quit it.
press this key once again to fix the time,
●
● Save energy function: this unit has no this
function, press this button, the mian unit will
click, "SE" will be displayed on the LCD of
Remote control
TURBO Turbo button
Set turbo on or off(the characters of turbo
will appear or disappear ) by pressing this
●
key unde r cooling or heating mode.Once
energized, the unit will be defaulted to be
turbo off. This function can not be set under
of turbo won't appea r .
auto, dehumidify or fan mode, and characters
TEMP Temp. display button
(display ), display ambient temperature,
FAN
AUTO
OPER
HEALTH
AIR
FILTER
TURBO
ON/OFF
X-FAN
HOUR
HUMIDITY
ON/OFF
MODE
FAN
X-FAN
TURBO
TEMP TIMER
SLEEP LIGHT
13

Simpleness swing mode is defaulted for
wireless remote control,in this mode,
press this button, could turn on or turn
off the Left and right swing function
When unit is turned off, synchronously
press "+" and Left and right swing buttons,
it could be switched between the simpleness
swing mode and stationary swing mode,
at this time, blinks 2 seconds.
In Stationary swing mode, press this button,the
angle for Left and right swing as show in below:
When left and right swing louver is working,
when turn off the unit, the siwing louver will
immediately stop at current position.
Left and right swing button
●
●
●
●
shows left and right swing louver swings
back and forth as show in the above figure.
1 , 2 hours later
setting temp.
●
℃
●
●
●
●
NOTE: This remote control is universal, it could be used formany units, some
buttons of this control which are not available to this unit will not be
described below.
Names and functions of remote control buttons
X-FAN button
Set X-FAN on (the characters of X-FAN will
appear)or off (the characters of X-FAN
disappears) by pressing this key under
cool or dehumidify mode. Once energized,
the unit will be defaulted to be X-FAN off.
This function can not be set under auto,
fan or heat mode, and the characters of
X-FAN won't appear.
Note：X-FAN is the alternative expression
of BLOW for the purpose of understanding.
Press this button to select LIGHT on or off
in the displayer. When the LIGHT on is
set,the icon will be displayed and the
indicator light in the displayer will be on.
When the LIGHT off is set, the icon will
be displayed and the indicator light in the
displayer will be off.
Light button
LIGHT
Press this button, enter into SLEEP state,
when repressed, it will quit. The sleep function
and FAN mode.
will be canceled with the stop of the unit.
There is no SLEEP function under AUTO
is the icon for sleep
function.
SLEEP Sleep button
At COOL mode: the SLEEP mode runs after
1hour, the setting temp. will be increased
by 1 , 2 hour later, setting temp. will be
increased by 2 and then will run at this
setting temperature.
after 1hour, the setting temp will be
At HEAT mode: the SLEEP mode runs
decreased by
, then it will run
at setting temperature.
℃
℃
℃
will be decreased by 2
Remote controller
X-FAN
FAN
AUTO
OPER
HEALTH
AIR
FILTER
TURBO
ON/OFF
X-FAN
HOUR
HUMIDITY
ON/OFF
MODE
FAN
X-FAN
TURBO
TEMP TIMER
SLEEP LIGHT
14
Operation of remote control

Guide for operation-general operation
★
cheduled timer on or timer off.
1.Press ON/OFF button to start the unit after powering
the main unit on.(Note: Power the unit on every time,
the big -guide louver and small-guide louver will be
closed firstly.)
2.Press MODE button to select desired running mode.
3.Press +/ - button to set the desired temperature.
(It is unnecessary to set the temperature at AUTO mode)
4. Press FAN button to set fan speed, the AUTO FAN,
LOW, MID or HIGH could be selected.
1.Press SLEEP button, set the sleep mode.
2.Press TIMER button, then press +/- button, to set the
3. Press light button to control displayer light on or off.
4. Press X-FAN button to set X-FAN function on or off.
5. Press turbo button to set this function on or off.
Guide for operation-optional operation
Introduction for special function
This function indicates that moisture on evaporator of indoor unit will be blowed after the unit
About X-FAN function
is stopped to avoid mould.
1. Having set X-FAN function on: After turning off the unit by pressing ON/OFF button
indoor fan will continue running for about 10 min. at low speed. In this period,
press X-FAN button to stop indoor fan directly.
2. Having set X-FAN function off: After turning off the unit by pressing ON/OFF button,
the complete unit will be off directly.
Guide for operation-general operation
ON/OFF
MODE
FAN
X-FAN
TURBO SLEEP LIGHT
TEMP TIMER
ON/OFF
MODE
FAN
X-FAN
TURBO SLEEP LIGHT
TEMP TIMER
5. Press button and button to set swing mode.
15
Operation of remote control

★
★
★
★
★
About lock
When AUTO RUN mode is selected, the setting temperature will not be displayed on the
About AUTO RUN
About new function of defrosting
LCD, the unit will be in accordance with the room temp. automatically to select the suitable
will be displayed on it, in which case, press any button, the mark will
running method and to make ambient comfortable.
About turbo function
If start this function, the unit will run at super-high fan speed to cool or heat quickly so that
the ambient temp. approachs the preset temp. as soon as possible.
Press +and - buttons simultaneously to lock or unlock the keyboard. If the remote controller
is locked, the icon
flicker for three times. If the keyboard is unlocked, the mark will disappear.
About switch between Fahrenheit and Centigrade
Under status of unit off, press MODE and - buttons simultaneously to switch ℃and℉.
It indicates: after starting this function by remote controller and the unit has been under
defrost status, If turn off the unit by remote controller, the unit will not stop defrosting until
it is finished; if change setting mode by remote controller, the function ,which is set last
time, won't be carried out until defrosting finished.
Operation of this function on or off: If remote controller is under off status, press mode button
and X-FAN
button simultaneously in order to enter or cancel this new function. If the unit is under
defrost mode, dual eight position on remote controller will display H1.If switch to heat mode,
the position will display H1, which flickers for 5s, in which case, press +/- button, H1 will
disappear and setting temp. be displayed.
After remote controller is powered on , the new defrost function will be defaulted to be
closed.
16
Operation of remote control

●
●
●
●
●
●
●
Changing batteries and notices
1.Slightly to press the place with along the arrowhead
direction to push the back cover of remote controller.
(As show in Fig 1. )
2.Take out the old batteries, insert two AAA alkaline
cells. (As show in Fig 2.)
3.Attach the back cover of remote control.
Fig.1
Fig.2
NOTE:
When changing the batteries, do not use the old or
different batteries, otherwise, it can cause the malf-
unction of the wireless remote control.
If the wireless remote control will not be used for a
long time, please take them out, and don't let the
leakage liquid damage the wireless remote control.
It should be placed where is 1m away from the TV
set or stereo sound sets.
The operation should be in its receiving range.
If the remote control cannot operate normally, please
take the batteries out, and then reinsert it 30s later; if
If the main unit needs to be remote controlled, please
aim remote controller at the receiver of main unit in order
to improve the receiving sensitivity of the main unit.
When the remote controller sends out signal, a mark
will flicker for about 1s. The bell will ring if the main unit
receives effective signal.
it is also abnormal ,please replace the batteries.
17
Operation of remote control

●
●
●
●
●
●
Up & Down Swing
Up &down swing can be selected to control start or stop
Notes:
of up & down swing motor by pressing up & down button on
remote controller or FUNC button on displayer,so that guide
louver will swing up and down or stop at a certain angle.
If indoor fan has operated,press up &down button on remote
controller. Refer to remote controller instruction for swing
mode.
Select up &down swing button on displayer to set it,and
then press button to start or stop swing.Press
it once to start and repress it to stop.
▼or ▲
If stop of swing is selected,the characters and icon about
up & down swing will disappear.When other states are selected ,
characters and icon about up & down swing will show again.
Front or upward air supply should be set for cooling and
dehumidifying mode.(Fig.4) Fig.5
Fig.4
Guide louver (downward)
or can be set
Guide louver (upward)
Guide louver (level)
At the begining of startup of the unit,downward air supply
can be selected for quick cooling around the people,but
it can not be kept for a long time in order to ensure good
circulation of air in the room .
Downward air supply should be set for heating.(Fig.5)
Adjustment of Swing
or can be set
18