Models
Indoor Unit
Outdoor Unit
MWM18Y3J MWM
24Y3J
MRM18Y3J MRM24Y3J
960-910-06
This appliance is not intended for use by persons (including children) with reduced
physical,
sensory
or mental capabilities or lack of experience and knowledge, un-
less they have been given supervision or instruction concerning use of the appli-
ance 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 ............................................................................................................2
Remote Screen Operation Guide
Buttons on remote controller .................................................................................3
Introduction for icons on display screen ................................................................3
Introduction for buttons on remote controller .........................................................4
Function introduction for combination buttons .......................................................7
Operation guide .....................................................................................................8
Replacement of batteries in remote controller .......................................................8
Emergency operation ............................................................................................9
Maintenance
Clean and maintenance.........................................................................................9
Trouble Shooting
Basic Trouble shooting ........................................................................................12
Installation Notice
Installation dimension diagram ............................................................................16
Tools for installation .............................................................................................17
Selection of installation location ..........................................................................17
Requirements for electric connection ..................................................................18
Installation
Installation of indoor unit......................................................................................19
Installation of outdoor unit ...................................................................................24
Vacuum pumping .................................................................................................29
Leakage detection ...............................................................................................28
Check after installation ........................................................................................30
Test and operation
Test operation ......................................................................................................30
Attachment
Pipe expanding method .......................................................................................31
1
Precautions
Warning
● Do not connect air conditioner to multi-purpose socket.Otherwise, it may
cause fire hazard
● Disconnect power supply when cleaning air conditioner. Otherwise, it may
cause electric shock.
● Do not spray water on indoor unit. It may cause electric shock or malfunction.
● Do not spill or submerge remote controller in liquids, remote may
malfunction or no longer operate.
● Do not repair air conditioner by yourself. It may cause electric shock or
damage. Please contact dealer when you need to repair air conditioner.
● Do not block air outlet or air inlet. It may cause malfunction.
● If you need to relocation of air conditioner is required please contact
licensed authorize service or contact dealer for more information. Otherwise
personal injury or damage can occur.
● Do not step on top panel of outdoor unit, or put heavy objects. It may cause
damage or personal injury.
● Do not extend fingers or objects into air inlet or air outlet. It may caus
personal injury or damage.
● Air Conditioner should be properly grounded. Incorrect grounding may cause
electricshock.
● Do install the diconnect. If not, it may cause malfunction.
● Installation and maintenance must be performed by qualified professionals
Otherwise, it may cause personal injury or damage.
Working temperature range
Indoor side DB/WB(°F/℃) Outdoor side DB/WB(°F/℃)
Maximum cooling 89.6/73.4(32/23) 109.4/78.8(43/26)
Maximum heating 80.6/-(27/-) 75.2/64.4(24/18)
Indoor side DB/WB(°F/℃) Outdoor side DB/WB(°F/℃)
Maximum cooling 89.6/73.4(32/23) 115/78.8(46/26)
Maximum heating 80.6/-(27/-) 75.2/64.4(24/18)
The operating temperature range (outdoor temperature) for cooling only unit is
5°F(-15°C) ~ 118°F(48℃) ; for heat pump unit is -4°F(-20℃) ~ 75°F(24℃) .
The operating temperature range (outdoor temperature) for cooling only unit is
5°F(-15℃) ~ 115°F(46℃ ); for heat pump unit is 19°F(-7℃) ~ 75°F(24℃ ).
MM24YJ
MM18YJ
2
Parts name
Indoor Unit
Outdoor Unit
air inlet
panel
filte
horizontal louver
air outlet
heating indicator
temp. indicator
cooling indicator
power indicator
receiver window
aux.button
drying indicator
display
remote control
air inlet
handle
handle
air outlet
Notice:
Actual product may be different from above graphics, please refer to actual
products.
MODE
(AUTO/COOL/DRY/FAN/HEAT).
setting.
: Press to decrease temperature
setting.
FAN
Press it set swing angle.
TIMER ON
CLOCK
TEMP
TIMER OFF
Press
to set auto-off timer
TURBO
SLEEP
LIGHT
Press it to set auto-on timer.
Press to set clock.
1
6
7
5
3
2
4
11
10
14
9
12
13
15
Operation of Remote Controller
3
9
10
13
12
5
4
11
8
7
2
1
6
8
Press to turn on/off the light.
Press to start or stop operation.
: Press to increase temperature
Press to set fan speed.
Press to select operation mode
SENSOR
AIR SWEEP
EXTEND
AUTO
15
14
START / STOP
3
DIGITAL display:
This area will show the set tempe-
rature.
LOCK icon:
is displayed by pressing "+"
and “-” buttons simultaneously. Press
them again to clear the display.
LIGHT icon:
is displayed by pressing the
LIGHT button. Press LIGHT button
again to clear the display.
22
MODE icon:
If MODE button is pressed,
current operation mode icon
(AUTO), ( COOL),
(DRY), (FAN) or (HEAT
only for heat pump models) will show.
18
is displayed when pressing
display.
After pressing TIMER button, ON or
OFF will blink.This area will show
the set time.
SET TIME display:
Pressing TEMP button,
(set temperature),
ambient temperature)
(outdoor ambient temperature)
and blank is displayed circularly.
(indoor
TEMP icon:
SLEEP icon :
is displayed by pressing
the SLEEP button. Press this
button again to clear the display.
19
is displayed when pressing the
nottub siht sserP.nottub OBRUT
again to clear the display.
TURBO icon:
Operation of Remote Controller
icon:
AIR SWEEP
16
17
21
20
23
24
16
1
7
18
19
20
21
22
23
24
the
button.
AIR SWEEP
Press this button again to clear the
27
26
25
4
is displayed when pressing the
again to clear the display.
Press FAN button to select the
desired fan speed setting (AUTO-
Low-Med-High).Your selection will
be displayed in the LCD windows,
except the AUTO fan speed.
FAN SPEED display:
is displayed when pressing the
to clear the display.
Operation of Remote Controller
icon:
SENSOR
icon:
EXTEND
EXTEND
button. Press this button
26
25
27
16
1
7
18
19
20
21
22
23
24
27
26
25
5
SENSOR
button. Press this button
again
Pressing CLOCK button,
blinks.
Within 5 seconds , pressing + or - button adjusts the
CLOCK :
present time. Holding down either button above 2 seconds increases or decreases the
time by 1 minute every 0.5 second and then by 10 minutes every 0.5 second. During
blinking after setting, press CLOCK button again to confirm the setting, and then
will
be constantly displayed.
7
Remote Controller Description
:
This button is used for setting Fan Speed in the sequence that goes from AUTO,
to
then back to Auto.
,
,
,
FAN
:
6
MODE :
5
Each time you press this button, a mode is selected in a sequence that goes from AUTO,
COOL,DRY, FAN,and HEAT
*
, as the following:
AUTO
COOL
DRY
FAN HEAT *
*Note: Only for models with heating
function.
After energization, AUTO mode is defaulted. In AUTO mode, the set temperature will not
be displayed on the LCD, and the unit will automatically select the suitable operation
mode in accordance with the room temperature to make indoor room comfortable.
1
3
2
4
Press this button to turn on the unit .Press this button again to turn off the unit.
Press this button to decrease set temperature
. Hold it down for 2 seconds or more
to rapidly decrease set temperature. In AUTO mode, set temperature is not
adjustable.
Press this button to increase set temperature. Hold it down for 2 seconds or more
to rapidly increase set temperature. In AUTO mode, set temperature is not
adjustable.
Auto
Low speed
Medium speed
High speed
Remote Control Instructions
SENSOR (SAVE)
:
Press this button to turn on SENSOR(SAVE) function. Saves room ambient temperature
and automatically adjusts maintaining that room ambient until pressed again which
cancels the SENSOR(SAVE) function.
START / STOP
:
AUTO
6
13
TEMP:
ambient temperature, 5s later or within 5s, it receives other remote control signal that will
return to display the setting temperature. if the users haven't set up the temperature
displaying status,that will display the setting temperature.(This function is not applicable
for some models).
TIMER ON :
TIMER OFF :
11
10
TURBO:
12
Press this button to initiate the auto-ON timer. To cancel the auto-timer program, simply
press this button again.
After pressing this button, disappears and "ON "blinks
. 0
0:00 is displayed for ON time
setting. Within 5 seconds, press + or - button to adjust the time value. Every press of either
button changes the time setting by 1 minute. Holding down either button rapidly changes the
time setting by 1 minute and then 10 minutes. Within 5 seconds after setting, press TIMER
ON button to confirm.
Press this button to set up & down swing angle, which circularly changes as below:
OFF
This remote controller is universal. If any command , or is sent out,
the unit will carry out the command as
indicates the guide louver swings as:
fan will continue operation for 10 min utes in order to dry the indoor unit even though you
have turned off the unit.
HEAT mode.
Press this button to activate / deactivate the Turbo function which enables the unit to
reach the preset temperature in the shortest time. In COOL mode, the unit will blow strong
cooling air at super high fan speed. In HEAT mode, the unit will blow strong heating air
at super high fan speed. (This function is not applicable for some models).
Press this butto
n to initiate the auto-off timer. To cancel the auto-timer program, simply
press the button again.TIMER OFF setting is the same as TIMER ON.
9
8
AIR SWEEP:
EXTEND(DRY):
Pressing button in COOL or DRY mode, the icon is displayed and the indoor
After energization,
OFF is defaulted. is not available in AUTO, FAN or
EXTEND
EXTEND
EXTEND
Remote Control Instructions
the indoor setting temperature or indoor ambient
By pressing this button you can display
temperature.When the indoor unit it will display the setting temperature,
is first powered on
if the temperature's display status is changed from other status to" ",displays the
7
★
●
●
●
●
1.Remove the battery cover plate from the rear of the remote controller.
(As shown in the figure)
2.Take out the old batteries.
3.Insert two new AAA1.5V dry batteries, and pay attention to the polarity
(+/-).
4. Reinstall the battery cover plate
Notes:
When replacing the batteries, do not use old or different types of
batteries, it may cause malfunction.
If the remote controller will not be used for a long time, please remove
batteries to prevent batteries from leaking.
Remote should be kept
3 feet
away from the TV set or stereos.
If the remote controller does not operate normally, remove batteries and
reinsert after 30 seconds. If abnormal operation continues, replace the
batteries.
Diagram for removal of
batteries
Replacement of Batteries
Press "+ " and "- " buttons simultaneously
to lock or unlock the keypad. If the remote
controller is locked, is pressing any button, blinks
three times.
℃
℉
SLEEP:
LIGHT:
16
Press this button to go into the SLEEP operation mode. Press it again to cancel this
Press LIGHT button to turn on the display's light and press this button again to turn off
disappears.
Combination of "+" and "-" buttons: About lock
14
15
or DRY mode to maintain the most
comfortable temperature for you.
Remote Control Instructions
17
Combination of "MODE" and "-" buttons:
, press "MODE"
displayed. In this case,
Allows you to toggle between Fahrenheit and Celsius.
When the unit is OFF
and " - " buttons simultaneously to switch between and .
8
the display's light. If the light is turned on, is displayed. If the light is tunrned off ,
function. This function is available in COOL
9
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 fig. press aux. button to turn on or turn o f 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.
10
Clean and maintenance
Clean lter
1
2
3
4
Clean lter
Install lter
Open panel
Open panel to access filter.
Remove lter
Remove the filter as
indicated in the fig.
● Use vacuum or water to
clean the filter.
● When the filter is very dirty, use
warm water (below 113°F) to
clean it, and then allow to dry.
Install the filter and then close the
panel cover tightly.
Note:
■ The filter should be cleaned every three months. If environment is
excessively dusty more frequent cleaning may be required.
■ After removing the filte , do not touch fins to avoid injur .
■
Air dry the filter to avoid deformation or fire hazard.
11
Clean and maintenance
Pre-season check up
Off-season check up
1. Check whether air inlets and air outlets are blocked.
2. Check whether circuit breaker is in good condition.
3. Check whether filter is clean
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.
2. Clean filter and indoor unit s panel.
3. Check whether mounting bracket for outdoor unit is damaged or corroded.
If yes, please contact dealer.
Notice for disposal of equipment-
1. Much of packaging is recyclable,check local city/county services for rules
2. If disposal of air conditioner is required, please contact local dealer or
consult service center for the correct disposal method.
12
Trouble Shooting
Issue
Check items Solution
Indoor unit
not working
with remote.
Or remote
has no
display.
●
Check batteries
●
Ensure remote is within
operating distance.
●
Are there obstacles?
●
Ensure remote is pointing
directly at "receiving window"
●
If no display on remote or
display is blurred.
●
No display when operating
remote controller?
●
Has remote come into contact with
liquid or been submerged in liquid?
●
Replace if needed.
●
Receiving range for signal is
26ft/8m.
●
Remove obstacles.
●
Select proper angle and point the
remote controller at the receiving
window on indoor unit.
● Check and replace batteries.
●
If so please discontinue use and
contact dealer for replacment.
●
Check check for damage to
remote. If damaged please
contact dealer for replacement.
No air
coming
from unit
● Is Air inlet or outlet
restricted?
● Remove restrictions.
● If in heating mode has set
point been reached?
●
After reaching the set
temperature, indoor fan will
stop blowing.
● Did Heat mode just come on? ● Equipment has "Hot start"
feature allowing the unit
outdoor to start first so cold
air is not blown into space.
Prior to calling for service please review troubleshooting section
to eliminate any issues.
13
Trouble Shooting
●
Has there been a power failure?
●
Circuit breaker tripping?
●
Wires not attached?
●
Unit will not restart after turning
off?
●
Is remote functioning properly?
●
If no- See remote
troubleshooting
●
Wait for 3min, then attempt to
turn on unit. If unit doesn't
restart please call service.
●
Call for immediate service.
●
Call servicer or dealer for
licensed professional.
●
If no check circuit breaker.
●
Wait for power to be restored.
Air conditioner
not operating
Mist/Fog
coming from
indoor unit
discharge
louvers
●
Check indoor temprature
and humidity.
●
Allow unit to run for sometime
Mist/fog should stop once
normal Indoor conditions
stabilize.
Issue Check items Solution
Cannot adjust
set temprature
●
Unit operating under Auto
mode.
●
Temperature can’t be adjusted
while in Auto mode.
Please change operation
modes if needing to change
set point.
●
Your required temperature
exceeds the set temperature
range.
●
Set temperature range:
61°F-86°F .
Cooling
temprature
and Heating
temprature
not sufficent
●
Brownout conditions occured?
Voltage too low.
●
Wait until power
stabilizes.
● Is filter dirty? ●
Clean the filter.
●
Set temperature is in proper
range?
●
Adjust temperature to proper
range.
●
Door and window are open?
●
Close door and window.
Allow time for system
to stabilize.
●
Are there lights on the display?
14
Issue Check items Solution
Odors
comming
from system
●
Check for source of odor.
●
Eliminate the odor
and clean filter.
●
Check for inclimate weather or
excessive wireless signals.
●
Power unit down for 3 minutes
and try operation again.
Outdoor unit
has mist/fog
●
Is system operating in heating?
●
While in defrost unit may
discharge mist/fog until clear of
moisture.
Noise like
there is water
inside unit
●
Did air conditioner just come on?
●
Noise is the sound of
refrigerant flowing inside the
system. Once stabilized
noise will discontinue.
Crackling
sound
●
Did air conditioner just come on?
●
Temprature difference between
plastic front and dicharge temp.
may be great once temprature
stabilzes noise will discontinue.
Service and Assistance
Air conditioner
operates
abnormally
1
2
3
Before calling for service, please check the "Basic troubleshooting" section
above. This may help you to find the answer to your problem, avoid unnecessary
service calls, and save the cost of a service call if the problem is not due to the
product itself. If you have checked the "Basic troubleshooting" section and still
need help, below you will find a list of available services:
You can find the name of your local Authorized Service Provider by visiting our
website at www.friedrich.com.
If you require further assistance please call
Friedrich customer support at 1-800-541-6645.
Before calling please make sure that you have the full model and serial number,
as well as the date of purchase of you equipment available. Providing us with this
information will allow us to better assist you.
15
Trouble Shooting
Error code
H1
E5
H4
U8
H6
C5
F1
F2
Troubleshooting
Unit is in defrost mode - This is normal.
Supply voltage was unstable during operation. Please restart, if
restart doesn't work, contact dealer or qualified serivce.
Please contact qualified servicer or dealer.
Please contact qualified servicer or dealer.
Please contact qualified servicer or dealer.
Error Code
●
When air conditioner status is abnormal, temperature indicator on indoor unit will
blink to display corresponding error code. Please refer to below list for identification
of error code.
Indoor display
Error code
Above indicator diagram is only
for reference. Please refer to
actual product for the actual
indicator and position.
■
If any of the below occur, please disconnect power and contact qualified
servicer immediately.
● Power cord has overheating or damaged.
● Unit operates loudly or abnormally during operation.
● Circuit breaker trips off frequently.
● Air conditioner gives off burning smell.
● Indoor unit is leaking water.
■ Do not repair or refit the air conditioner by yourself
■ If the air conditioner operates under abnormal conditions, it may cause
malfunction, electric shock or fire hazard
Warning
Note: If there're other error codes, please contact qualified professionals for
Indoor component has error. Please restart, if restart doesn't
work, contact dealer or qualified service.
System noticed abnormal temperature range. Please restart, if
restart doesn't work, contact dealer or qualified service.
Indoor component has error. Please restart, if restart doesn't
work, contact dealer or qualified service.
16
Installation dimension diagram
Drainage pipe
At least 8 Ft
At least 6 in
Space to the obstruction
At least 20 in
At least 12 in
At least 12 in
At least 7 Ft
Space to the floo
Space to the
obstruction
Space to the
obstruction
Space to the ceiling
At least 10 Ft
Space to the obstruction
Space to the wall
At least 6 in
At least 12 in
Space to the wall
At least 6 in
Space to the wall
Note *Min/Max
Line Length 10'/82'
17
1.
There should be no obstruction near air inlet
and air outlet.
2.
Location should have acceptable condensate
disposal considerations.
3.
4.
Select a location which is out of reach for
children.
5.
Installed location should be rated for the
weight of equipment and not create
vibration or noise.
6.
The appliance must be installed 8 Ft
above floor.
Do not install directly above heat source or
electrical appliance.
Tools for installation
Selection of installation location
2. Screw driver
1. Level
4. Drill head
7. Open-end wrench
10. Vacuum pump
5. Pipe expander
8. Pipe cutter
11. Manifold gauges
3. Impact drill
6. Torque wrench
9. Leakage detector
12. Multimeter
13. Allen/spanner wrenches 14. Measuring tape
Note:
● Please contact a local qualified installer for installation.
● Ensure power cords are rated for use with equipment.
Basic requirement
Outdoor unit
Indoor unit
Installing the unit in the following
locations may cause operational issues
with equipment. If unavoidable seek
assistance from local dealer.
1.
Any location with an excessive heat
source, where flammables, gasses or
volitile flyings exist.
2.
Any location with high-frequency
devices (such as welding machine,
medical equipment).
3.Coastal locations.
4.
Corrosive or spaces that are excessivly
wet, such as pool rooms, laundry and
bath rooms.
1.
Be considerate of installed location due to hot airflow from unit and any noise that it
may create.
2.
Location should be well ventilated and dry, outdoor unit not to be exposed
directly to sunlight or strong wind.
3.
The location should be able to withstand the weight of outdoor unit.
4.
Ensure installation conforms to installation diagram.
5.
Select a location which is out of reach for children and far away from animals or
plants. If it is unavoidable, please add the fence for purpose of safety.
18
Requirements for electric connection
Safety precaution
Grounding requirement
1. Must follow national and regional safety regulations when installing the unit.
2. According to the local safety regulations, use qualified power supply circuit an
circuit breaker.
3. Make sure the power supply matches with the requirement of air conditioner.
Install proper power supply cables before using the air conditioner.
4. Properly connect all wires.
5. Be sure to cut off the power supply before proceeding any work related to
electricity and safety.
6. Do not apply voltage until installation is complete.
7.
The temperature of refrigerant circuit will be high, please keep communication
cable clear of copper tubes.
1.
Qualified installer must ensure proper grounding of air conditioner.
2.
The yellow-green wire in air conditioner is the grounding wire. Do not use for any other
purpose.
3.
Grounding should follow national and local electrical regulations.
4.
Air conditioner should be installed so that servicer can access electrical connections.
5. Local code approved disconnect box must be used.
6.
Including an circuit break with suitable capacity, please note the following table.
Switch should include magnet break and heat break function, this will assist with
protection of circuit.
Models
18/24K
Circuit breaker
25A
19
Step two: install wall bracket
Installation of indoor unit
Step one: choosing installation location
1. Hang wall bracket, install center screw and apply level.
2. If required pre-drill in the locations you've chosen for mounting, install required
mounting hardware and secure to wall.
1.
Choose the position of piping hole according to the direction of outlet pipe. The
position of piping hole should be a little lower than the wall-mounted frame,
shown as below.
Step three: open piping hole
Left
Wall
3"
Right
Mark center location
Level
Rear piping hole
Wall
Space
to the
wall
above
6 in
Space
to the
wall
above
6 in
3"
Rear piping hole
Left
Wall
3"
Right
Mark center location
Level
Rear piping hole
Wall
Space
to the
wall
above
6 in
Space
to the
wall
above
6 in
3"
Rear piping hole
18K
24K
2. Drill hole through wall with a diameter of 3" on the selected location. In
order to drain smoothly, slant the hole on the wall slightly downward to the
outdoor side with the gradient of 5-10°.
20
Step ve: connect the pipe of indoor unit
1. Connect the male pipe joint to the flare
nut.
2. Pretighten flare nut by hand.
3. Adjust the torque force by referring to the following sheet. Place the open-end
wrench on the pipe joint and place the torque wrench on the flare nut. Tighten
the flare nut with torque wrench.
2. When select leading out the pipe
from left or right, please cut off the
corresponding hole on the bottom
case.
cut off
the hole
left right
1. The pipe can be led out in the
direction of right, rear right, left or
rear left.
left
rear left
right
rear right
Step four: outlet pipe
Installation of indoor unit
pipe joint flare nut
pipe
Indoor
5-10
outdoor
˜55
Note:
●
Wall penetration collar is field
supplied, ensure hole is properly
insulated once unit is installed.
21
4.
Wrap with insulation then wrap with
tape.
Step six: install drain hose
Installation of indoor unit
torque wrench
open-end
wrench
indoor pipe
pipe
flare nut
Hex nut diameter Tightening torque (N
.
m)
Φ 6
Φ 9.52
Φ 12
Φ 16
Φ 19
30~40
40~55
60~65
70~75
15~20
Insulating pipe
1. Connect the drain hose to the outlet pipe of
indoor unit.
2.
Bind the joint with
hose clamp.
outlet
pipe
drain hose
drain hose
tape
outlet pipe
drain hose
insulating pipe
Note:
●
Add insulation to pipe on the
indoor drain hose in order to
prevent condensation.
1. Open the panel, remove the screw
on the wiring cover. Remove.
wiring cover
screw
panel
Step seven: connect power to indoor unit
22
4. Put wiring cover back and then tighten the screw.
5. Close the panel.
3. Remove the wire clip; connect the power connection wire to the wiring terminal
with wire clip.
N(1) 2 3
blue brownblack
yellow-
green
Outdoor unit connection
18,24K indoor unit:
Installation of indoor unit
Note:
● All electrical connections must be completed by a qualified professional.
●
If required by local code install circuit breaker inline. Must be 3-Pole.
power connection
wire
cable-cross
hole
2. Make the power connection wire go
through the cable-cross hole at the back
of indoor unit and then pull it out from
the front side.
Notice before installation
1. How to install the over line pipe(According to the direction as show.)
2. Finish(According to the direction as show in right figure.
wire pipe
Fixed nut
Screw
23
Installation of indoor unit
Step eight: bind up pipe
1. Bind up the connection pipe, power
cord and drain hose with the band.
indoor unit
gas
pipe
indoor and
outdoor power cord
liquid pipe
drain hose
band
2. Plan for bends in line set and ensure
that cable and drain have extra
length in those areas. Otherwise
route these seperate from liquid and
gas pipe.
3. Bind them evenly.
4. The liquid pipe and gas pipe should
be bound separately at the end.
Note:
● The power cord and control wire
can't be crossed or winding.
● The drain hose should be bound
at the bottom.
drain hose
band
connection pipe
indoor power cord
Step nine: hang the indoor unit
1. Pass wrapped piping and drain/cable through hole in wall. (Ensure that drain is on
on the bottom.)
2. Hang the indoor unit on the wall-mounting frame.
3. Stuff the gap between pipes and wall hole with insulation.
4. Secure the wall pipe.
5. Check if the indoor unit is installed firmly and closed to the wall
Note:
● Do not bend the drain hose excessively in order to prevent blocking.
indoor
outdoor
wall pipe
sealing gum
upper hook
lower hook of
wall-mounting frame
24
Installation of outdoor unit
Step one: securing of outdoor unit
(select location based on actual application)
1. Select installation location to fit structure. Follow diagram and clearances.
2.
Secure the outdoor unit on the selected location with expansion screws or
required hardware.
at least 1 in above the floor
Note:
● Take sufficient protective measures whe
installing the outdoor unit.
●
Make sure the support can withstand at least
four times of the unit weight.
● The outdoor unit should be installed at least
1"in above the floor in order to install drain
joint.
● For a unit with cooling capacity of 7800 ~
17000, 6 expansion screws are needed; for
the unit with cooling capacity of 20500 ~
27300, 8 expansion screws are needed
.
Step two: install drain joint (Only for cooling and heating unit)
1. Connect the outdoor drain joint into the hole on the chassis, as shown in the
picture below.
2. Connect the drain hose into the drain vent.
chassis
outdoor drain joint
Drain hose
drain vent
25
Installation of outdoor unit
1. Remove the screw on the right handle of outdoor unit
and then remove the handle.
2. Remove the screw cap of valve and attach the
flare nut to the approriate valve.
3. Pretightening the flare nut by hand.
4. Tighten the flare nut with torque wrench by referring to the sheet below.
handle
screw
gas pipe
liquid pipe
liquid
valve
gas valve
flare nut
pipe joint
Hex nut diameter
Tightening torque
(N
.
m)
Φ 6
Φ 9.52
Φ 12
Φ 16
Φ 19
30~40
40~55
60~65
70~75
15~20
Step four: connect indoor and outdoor pipes
Step three: x outdoor unit
1. Place the outdoor unit on the support.
2. Fix the foot holes of outdoor unit with bolts.
foot holes
foot holes
26
Installation of outdoor unit
Step ve: connect outdoor electric wire
1. Remove the wire clip; connect the power connection wire and signal control wire
(only for cooling and heating unit) to the wiring terminal according to the color;
N(1) 2 3 L1 L2 G
yellow-
green
yellow-
green
blue
brown
wire clamp
black
blue
brown
power cord power connect wire
2. Secure the power connection wire and signal control wire with wire clip
(only for cooling and heating unit).
Note:
● After tighten the screw, pull the power cord slightly to check if it is firm
● Never cut the power connection wire to prolong or shorten the distance.
● The connecting wire and connection pipe cannnot touch each other.
● Top cover of outdoor unit and electric box assembly should be fixed by the
screw. Otherwise, it can cause a fire, or short circuit caused by water or dust
Install the over line pipe
wire pipe
Fixed nut
Finish
27
● The through-wal height of drain hose
shouldn't be higher than the outlet
pipe hole of indoor unit.
● Slant the drain hose slightly dow-
nwards. The drain hose can't be
curved, raised and fluctuant, etc
● The water outlet can't be placed
in water in order to drain smoothly.
Installation of outdoor unit
the drain hose
can't raise
upwards.
The drain hose can't be fluctuant
The drain hose
can't be fluctuant
The water
outlet can't be
fluctuant
The water outlet
can't be placed
in water
Note:
Step six: neaten the pipes
1. The pipes should be placed along the wall,
bent reasonably and hidden if possible.
Min. radius of bend to the pipe is 4 in.
2. If the outdoor unit is higher than the wall
penetration, you must set a U-shaped
curve in the pipe before pipe goes into the
room, in order to prevent rain from getting
into the room.
U-shaped curve
wall
drain hose
Pressure testing
Use Dry Nitrogen
1.
Remove the valve caps on
the liquid valve and gas valve
and the nut of refrigerant port
2.
Connect the charging hose
of manifold to the refrigerant
port, and the other to the
nitrogen tank regulator.
3.
(System should hold 550
Psig for one hour.)
Begin with-
a. 150 psig for 5 min.
b. 300 psig for 15 min.
c. 550 psig for 1 hour.
4.
Test all connections with
bubble solution.
5.
If no leaks are found proceed to vacuum steps below.
28
liquid valve
gas valve
refrigerant charging
port
cap of refrigerant
charging port
vacuum pump
Manifold gauge
valve cap
Lo Hi
Allen/spanner
open
close
29
Vacuum pumping
1.
Remove the valve caps on
the liquid valve and gas valve
and the nut of refrigerant port
2.
Connect the charging hose
of manifold to the refrigerant
port, and the other to the
vacuum pump.
3.
Open manifold and allow
vacuum to pump down for
20-30 min. Manifold
should read -0.1MPa.
4.
Close vacuum pump and
watch that the manifold
remians at -0.1MPa. If
pressure decreases then
break vacuum and check
for leaks with pressure test.
5.
Remove the piezometer, open the valve core of
liquid valve and gas valve completely with inner
hexagon spanner.
6. Tighten the screw caps of valves and refrigerant charging vent.
7. Reinstall the handle.
Use vacuum pump
liquid valve
gas valve
refrigerant charging
port
nut of refrigerant
charging port
vacuum pump
Manifold gauge
valve cap
Lo Hi
Allen/spanner
open
close
30
Test operation
System will may not cool or heat properly.
It may cause condensation and water
dripping.
Is water draining well?
It may cause condensation and water
dripping.
Is the voltage of power supply +/- 10% of
the voltage marked on the nameplate?
It may cause system to operate improperly.
Is electric wiring and pipeline installed
correctly?
May cause system to operate improperly
Is the unit grounded securely?
Electrical leakage could occur.
System may not operate correctly.
Air inlet and Air outlets clear of restrictions?
All installation materials have been
cleaned and removed?
It may cause malfunction or damaging the
parts.
The gas valve and liquid valve of
connection pipe are open completely?
1. Preparation of test operation
● Customer approves of installation.
● Specify the important notes for air conditioner to the client.
2. Method of test operation
● Turn on power, press ON/OFF button on the remote controller to start
operation.
● Press MODE button to select AUTO, COOL, DRY, FAN and HEAT to check
whether the operation is normal or not.
●
If the ambient temperature is lower than 61°F , the air conditioner can’t
start cooling.
Check after installation
● Check according to the following requirement after finishing installation
Items to be checked Possible malfunction
The unit may drop, shake or emit noise.
Ensure unit has been installed correctly.
Has the system been leak tested?
Has drain been properly insulated?
Are power connections properly sized?
System may not operate correctly.
System will may not cool or heat properly.
31
Pipe expanding method
Note:
Improper pipe expanding is the main cause of refrigerant leakage. Please expand
the pipe according to the following steps:
A: Cut the pipe
● Confirm the pipe length according t
the distance of indoor unit and
outdoor unit.
● Cut pipe with pipe cutter.
pipe
pipe cutter
leaning uneven burr
B: Remove the burrs
● Remove the burrs with shaper and
prevent the burrs from getting into
the pipe.
downwards
pipe
shaper
C: Insulate piping
D: Put on the flare nut
●
Remove the flare nut on the indoor
connection pipe and outdoor
valve; install the flare nut on the pipe.
union pipe
pipe
E: Expand the port
● Expand the port with expander.
Note:
● "A" is different according to the
diameter, please refer to the sheet
below:
expander
hard
mold
pipe
F: Inspection
● Check the quality of expanding port.
If there is any blemish, expand the
port again according to the steps
above.
the length is equal
improper expanding
leaning
damaged
surface
crack uneven
thickness
smooth surface
Outer diameter
In(mm)
A(mm)
Max Min
1/4"(Φ6-6.35)
3/8"(Φ9.52)
1/2"(Φ12-12.7)
5/8"(Φ15.8-16)
1.3 0.7
1.6 1.0
1.8 1.0
2.4 2.2
Friedrich Air Conditioning Co.
10 001 Reunion Place, Suite 5 0 0 • San Antonio, Texas 78 216
1.800.541.6 6 45
www.friedrich.com
