Frigidaire | FFHP362SQ2 | 66129916832 | Frigidaire FFMS221SQ2 66129916832

All about the
Installation
of your
Split Type Room Air Conditioner
Refer to Page 2 for table of contents.
www.frigidaire.ca Canada 1-866-942-1567
2020323B2335 (June 2009)
www.frigidaire.com USA 1-866-942-1567
Welcome to the world of
simple handling and no worries
Thank you for choosing Frigidaire. This manual contains all of the information
required to guarantee your safety and the appropriate use of your air
conditioner.
Please read all of the instructions before using the air conditioner and keep
this manual for future reference.
We know you will enjoy your new air conditioner and thank you for choosing
our product.
We hope you will consider us for future purchases.
Environmental advices
The packaging material used is recyclable. We
recommend that you separate plastic, paper and
cardboard and give them to recycling companies.
If you need to dispose of this appliance in the
future, do not throw it away with the rest of your
domestic garbage.
Attention!!
The air conditioner that you have bought may be slightly different from
the one illustrated in this manual. Please refer to the information related
to the model you have.
This air conditioner is for domestic use only. It is not recommended for
heavy commercial or industrial use.
01 Welcome
Contents
01.
02.
03.
04.
05.
Welcome..........................................................................................01
Environmental advices........................................................................01
Contents...........................................................................................02
Safety precautions............................................................................. 03
Installation:
5.1 Choosing the installation site.................................................04
5.2 Parts list..............................................................................06
5.3 Indoor unit installation.......................................................... 08
5.4 Outdoor unit installation....................................................... 12
5.5 Refrigerant piping connection................................................14
5.6 Electrical work.....................................................................16
5.7 Purging the system............................................................... 20
5.8 Electrical safety....................................................................23
5.9 Gas leak check....................................................................23
5.10 Initial operation test..............................................................24
Contents 02
Safety precautions
This appliance must be installed by a qualified licensed HVAC
technician in accordance with all applicable codes. All electrical
connections should be performed by a licensed electrician.
Manufacturer's warranty will be voided with failure to comply.
Incorrect Handling cound result in Serious Injury or Death!
1. Do not attempt to install the split air
conditioner by yourself.
2. This air conditioner contains no
user-serviceable parts. Always call
an authorized Electrolux servicer
for repairs.
3. When moving the air conditioner,
always call an authorized Frigidaire
servicer for disconnection and reinstallation.
4. Do not insert fingers or place
objects into the discharge area in
the front of the indoor unit.
5. Do not insert fingers or place
objects into the discharge area in
the front of the outdoor unit.
6. Do not start or stop the air
conditioner by turning off the power
at the electrical box.
7. In the event of a malfunction (sparks,
burning smell, etc.) immediately
power off unit and call an
authorized Frigidaire servicer.
8. Do not operate the air conditioner
with wet hands.
9. Do not drink any water or
condensation that is drained from
the air conditioner.
10.Provide occasional ventilation
during use. Do not direct airflow
at fire places or other heat related
sources as this could cause flare
ups or make units run excessively.
03 Satety precautions
11. Do not climb on or place objects
on the outdoor unit.
12. Do not hang objects off the indoor
unit.
13. Do not place objects containing
water on the indoor and/or
outdoor units.
14. Turn off the air conditioner at the
power source when it will not be
used for an extended period of
time.
15. Periodically check the condition of
the outdoor unit’s installation base
for any damage.
16. Do not apply heavy pressure to
the coil fins of the indoor and/or
outdoor units.
17. Operate the indoor unit with air
filters in place.
18. Do not block or cover the intake
grille, discharge area and outlet
ports.
19. Ensure that any electrical/
electronic equipment is 36” away
from the indoor unit and outdoor
unit.
20. Do not use or store flammable
gases near the indoor and/or
outdoor units.
Choosing the installation site
Installation Warnings
1. Carefully read the installation manual before beginning.
2. Follow each step as shown.
3. Observe all local, state and national electric codes. This appliance must
be installed by a qualified licensed HVAC technician in accordance with
all applicable codes. All electrical connections should be performed
by a licensed electrician. Failure to comply will result in a void of the
manufacturer's warranty.
4. Pay attention to all safety notices.
Precautions for Installation
Installation at the following sites may cause problems. If you must inevitably
install the unit at one of these sites, please consult your local distributor
beforehand:
1. Sites with machine oil.
2. Sites with a high concentration of salinity, such as coastal areas.
3. Sites with sulfuric gas, such as hot water springs.
4. Sites with high frequency equipment, such as wireless equipment, welding
machines and medical installations.
5. Sites with flammable gases or volatile material.
6. Sites with special environmental conditions.
7. Laundry rooms.
Choosing the installation site 04
Indoor Unit
1. Install unit where air flow will not
be obstructed.
2. The installation location must
support the weight of the indoor
unit.
3. The site must be easily accessible
for maintenance and replacement
of the air filter.
4. The installation location must allow
for the necessary space around the
indoor unit, as shown in the figure
1.1.
5. There should be at least 3 feet (1
meter) between the unit and radio
or television devices. It is ideal that
the unit be installed at the center of
the wall.
6. The indoor unit must be kept away
from fire, smoke and flammable
gases.
7. We recommend the indoor unit to
be installed as high up as possible
on the inside wall (minimum of 7
feet high), always leaving a space
of at least 6" between the top of the
indoor unit and the ceiling.
8. The installation location must
allow for the easy removal of the
connector pipe and drain hose.
9. The unit must be installed at a
location protected from direct
sunlight.
More
than 6"
More
than 6"
More
than 6"
Figure 1.1
Outdoor Unit
1. The outdoor unit must be installed
at a convenient site that is not
exposed to strong winds. The site
should be dry and well ventilated.
2. The site must support the weight
of the outdoor unit and allow for
vertical installation.
3. The site must be kept away from
flammable gases.
4. The site must provide enough space
around the unit, as shown in figure
1.2.
5. Children must not be able to access
the installation site.
More
than 8.5"
More
than 12"
More
than 12"
06
More
than 78"
05 Choosing the installation site
More
than 2"
Figure 1.2
More
than 18.5"
Part list
(Multi Split)
Wall Mounting Bracket
1
-
Drain Joint (Heat Pump only)
1
1
5
-
7
-
Remote Control
1
-
Connecting pipe
assembly
1
-
Type A
2
2
Type B
2
2
Remote Control Holder
1
-
Self-tapping screws
2
-
-
1
Self-tapping screws
(For Wall mounting Bracket)
21400
21400
Drainage Plug
(Heat Pump only)
Connecting Adaptor
A
(For Remote Control Holder)
B
Part list 06
1
More than 6"
3
Indoor unit
More than 6"
6
More than 6"
Air filter
4
5
More than
19-13/16"
More than 1'
A
8
More than
19-13/16"
7
A
B
B
More than
79-1/5"
2
Attention!!
1. This illustration is for explanation purposes only.
2. Copper tubes must be insulated independently.
07 Part list
C
Outdoor
unit
Indoor unit installation
Wall mounting brackets and dimensions
6" or more from
the ceiling
Wall mounting bracket
Indoor unit outline
Refrigerant pipe
hole (right) Ø 2.56"
Refrigerant pipe
hole (right) Ø 2.56"
3.39"
3.39"
6" or more
from the wall
B
4.21"
4.21"
6" or more
from the wall
A
6" or more from
the ceiling
A
Indoor unit outline
Wall mounting bracket
6" or more
from the wall
B
6" or more
from the wall
Refrigerant pipe
hole (right) Ø 2.56"
1.58''
Refrigerant pipe
hole (right) Ø 2.56"
1.58''
7.91''
5.31''
=18000 Btu's (A:36.97" B:11.73")
6" or more from
the ceiling
A
Wall mounting bracket
Indoor unit outline
6" or more
from the wall
B
6" or more
from the wall
1.97''
1.97''
Refrigerant pipe
hole (right) Ø 2.56"
3.94''
Refrigerant pipe
hole (right) Ø 2.56"
4.88''
=21400 Btu's (A:39.69" B:12.40")
Indoor unit installation 08
%!&!om
-#
A
+##&! ,-/
;<!! ! #
%!&!
!&*##
B
%!&!
!&*##
1.97''
1.97''
!# $%
!# $%
3.94''
4.88''
Installing the Wall Mounting Bracket
1. Install the wall mounting bracket
horizontally over the structural
parts on the wall using the spaces
indicated on the bracket, as shown
in figure 1.3.
2. In the case of tiled, concrete or
similar walls, create 13/64"
diameter holes. Place anchor
supports for the appropriate
assembly screws.
3. Install the wall mounting bracket to
the wall with eight A type screws.
4. At all times securing to the wall
studs is recommended.
Wall mounting bracket
Figure 1.3
Attention!!!
Fit the wall mounting bracket and drill holes in the wall according to the
wall structure and corresponding mounting points on the wall mounting
bracket (Dimensions are in “inches” unless otherwise stated).
Wall
Indoor unit
1. Determine the position of the
hole for the pipes using the wall
mounting bracket and drill the
pipe hole so that it is tilted slightly
downward.
2. Always use a pipe cover with an
opening when drilling.
09 Indoor unit installation
Outdoor unit
0.2"-0. 28"
Drilling the Hole
Connective pipe and drainage installation
1. For the left-hand and right-hand
piping, remove the pipe cover from
the side panel. The pipe cover can
be kept as it may be used when
relocating the air conditioner to any
other place.
2. For the rear-right-hand and rearleft-hand piping, install the piping
as shown in figure 1.4. Bend the
connective pipe to be laid at a
height of 1-11/16" or less from the
wall. Fix the end of the connective
pipe.
Pipe cover
(right)
Pipe
holder
Pipe cover
(left)
Left piping
Rear right
piping
Right piping
Rear left
piping
Figure 1.4
Connective
pipe
Indoor unit
outline
1-11/16"
Connective pipe
Drainage
1. Run the drain hose sloping
downward. Do not install the drain
hose as illustrated in figure 1.5.
2. When connecting extension drain
hose, insulate the connecting part
of extension drain hose with a
shield pipe, do not let the drain
hose slack.
Do not block
water flow
by a rise.
Do not block
water flow
by a rise.
Do not put the end
of drain hose into water.
Figure 1.5
Fastening the Indoor Unit
Upper hook
1. Pass the piping through the hole in
the wall.
2. Put the upper claw at the back of
the indoor unit on the upper hook
of the wall mounting bracket, move
the indoor unit from side to side to
see that it is securely hooked.
Lower hook
Indoor unit installation 10
3. Piping can easily be made by lifting
the indoor unit with a cushioning
material between the indoor unit
and the wall.
4. Push the lower part of the indoor
unit up on the wall, Then move the
indoor unit from side to side, up
and down to check if it is hooked
securely.
Cushioning
material
Piping and wrapping
1. Bundle the tubing, connecting
cable, and drain hose with tape
securely and evenly as shown in the
sideward figure.
2. Because the condensed water from
rear of the indoor unit is gathered
in ponding box and is piped out of
room, do not put anything else in
the box.
Indoor unit
Cable
connection
Ponding
box
Pipe room
Connective
pipe
Drain hose
Wrapping
belt
Attention!!
1.
2.
3.
4.
Connect the indoor unit first, then the outdoor unit.
Be careful not to let the drain hose slack.
Both of the auxiliary piping should be heat insulated.
Be sure that the drain hose is located at the lowest side of the
bundle. Locating at the upper side may cause drain pan to overflow
inside the unit.
5. Never intercross nor intertwist the power wire with any other wiring.
6. Run the drain hose sloped downward to drain out the condensed
water smoothly.
11 Indoor unit installation
Outdoor unit installation
1. Install the outdoor part of the unit
on a flat surface to avoid excess
noise and vibration. A condenser
pad is recommended.
2. Direct the air vent toward an area
without obstacles.
3. Install the unit at the site where
it is exposed to as little wind as
possible, especially in areas where
it is frequently windy.
4. If the installation site is exposed to
heavy winds, such as in coastal
areas, place the unit along the
widest part of the wall or use
protective plates.
5. Be sure there is no obstacle which
blocks exhausting air, including
schrubs or bushes.
Settlement of outdoor unit. Anchor the
outdoor unit tightly and horizontally
on a concrete or flat mount with a
bolt and nut 2/5" or 5/16" diameter
(Purchased separately).
Strong wind
Air inlet
Air
inlet
Air outlet
Capacity (BTU/h)
Outdoor unit dimension
inch(WxHxD)
A (inch)
B (inch)
9000
33-9/25 x 21-6/25 x 12-3/5
21-6/25
11-7/25
12000
33-9/25 x 23-6/25 x 12-3/5
22-2/25
14-4/25
18000
37-3/5 x 27-3/5 x 15-3/5
24-6/25
15-9/25
21400
38-3/5 x 31-1/10 x 16-3/5
26-4/25
17-7/25
28000
38-3/5 x 31-1/10 x 16-3/5
26-4/25
17-7/25
33600
38-3/5 x 31-1/10 x 16-3/5
26-4/25
17-7/25
26000
38-3/5 x 31-1/10 x 16-3/5
26-4/25
17-7/25
34400
42-4/5 x 43-4/5 x 17-3/10
31-3/25
18-3/25
Outdoor unit installation 12
Condensate drainage of outdoor unit
(cooling only excluded)
The condensate and defrosting water produced during heating in the outdoor
unit can be properly discharged by drainage pipe.
Installation method: Insert the drain connection into one of the holes of the
chassis and then connect drainage pipe with drain nozzle. Insert drainage plugs
(with different appearance) into the other holes.
Drain
connection
Chassis
13 Outdoor unit installation
Drainage Plug
Refrigerant piping connection
Unit comes with 25' tubing bundle. It is not recommended to cut. If too long,
loop for excess.
Note: Keep original bend so not kinking of the tube occurs.
Flaring work
Main cause for refrigerant leakage is
due to defect in the flaring work.
Carry out correct flaring work using
the following procedure:
1. Cut the pipes and the cable.
A) Use the piping kit accessory or
pipes purchased locally.
B) Measure the distance between
the indoor and the outdoor unit.
C) Cut the pipes a little longer than
the measured distance.
D) Cut the cable 5ft longer than the
pipe length.
2. Burr removal
A) Completely remove all burrs from
the cut cross section of pipe/
tube.
B) Put the end of the copper tube/
pipe in a downward direction
as you remove burrs in order to
avoid dropping burrs into the
tubing.
3. Put nut on.
Remove flare nuts attached to
indoor and outdoor unit, then
put them on pipe/tube having
completed burr removal. (It is not
possible to put them on after flaring
work)
Pipe
Wrong
Correct
Oblique Roughness Burr
Pipe
Reamer
Point
down
Flare nut
Cooper tube
Refrigerant piping connection 14
4. Flaring work.
Firmly hold copper pipe in a die in
the dimension shown in the table
below.
OUTER
DIAMETER (inch)
Bar
Copper
pipe
Handle
A (inch)
Yoke
Max.
Min.
1/4
0.051
0.028
3/8
0.063
0.039
1/2
0.071
0.039
5/8
0.095
0.087
Red arrow mark
Clamp
handle
Connection Adjustment
1. Align the pipes to be connected.
2. Screw the flare nut with your
fingers, and then tighten it with a
spanner and torque wrench, as
shown in figure 1.6.
Indoor unit
tubing
Flare
nut
Pipings
Figure 1.6
Caution: Excessive twisting may break
the nut, depending on the installation
conditions.
OUTER
DIAMETER (inch)
TIGHTENING
TORQUE (lbf .in)
1/4
139
174
3/8
260
304
1/2
434
477
5/8
651
694
15 Refrigerant piping connection
ADDITIONAL TIGHTENING
TORQUE (lbf .in)
Electrical work
Electric safety regulations for the initial installation
1. If there is serious safety problem
about the power supply, the
technicians should refuse to install
the air conditioner and explain
to the client until the problem is
solved.
2. Power voltage should meet the
requirements in table 2.1.
3. Over current protection and
circuit disconnect should meet
the requirements in table 2.1 and
the applicable local and national
electrical codes.
4. Ensure the air conditioner is
grounded well.
5. All wiring must comply with local
and national electrical codes and
be installed by qualified and skilled
electricians.
6. An individual branch circuit used
only for this air conditioner must be
available. See table 2.1.
Electrical Data Table 2.1
Capacity
(BTU/h)
System
Voltage
Volts-Ph.Freq
Operating
Voltage
Compressor
Outdoor Fan
Indoor Fan
MIN. Circuit
Ampacity
(MCA)
Max. Fuse/Circuit
Breaker
Amps(MOP)
FLA
Output
Watts
Volts
FLA
Output
Watts
9000
208/230-1-60 187/253
7.17
/
0.14
30
208/230V-AC
0.20
20
10
15
12000
208/230-1-60 187/253
6.47
/
0.14
30
208/230V-AC
0.20
20
10
15
18000
208/230-1-60 187/253
9.70
/
0.28
60
208/230V-AC
0.32
20
13
20
21400
208/230-1-60 187/253
11.04
/
1.10
90
208/230V-AC
0.24
60
16
25
28000
208/230-1-60 187/253
13.50
40
0.45
120
208/230V-AC
0.40
40
20
30
33600
208/230-1-60 187/253
17.50
67
0.73
170
208/230V-AC
0.47
60
24
40
26000
208/230-1-60 187/253
15.82
/
0.59
90
/
/
/
21
35
34400
208/230-1-60 187/253
15.60
/
0.82
170
/
/
/
21
35
(Min/Max)
RLA
LRA
Connecting (Power and Control Cable)
cable from the outdoor unit to indoor unit consists of four wires and provides
the power for the indoor unit as well as the communication signal and ground
between the outdoor and indoor unit. Two wires are high voltage AC power,
one is low voltage DC signal and one is a ground wire.
(Canadian Electrical Code) for special requirements.
Electrical work 16
Connect the cable to the indoor unit
1. The inside and outside connecting
cable can be connected without
removing the front grille.
2. Connecting cable between indoor
unit and outdoor unit shall be
approved polychloroprene sheathed
flexible type cord.
3. Lift the indoor unit panel up,
remove the electrical box cover by
loosening the screw.
4. Ensure the wire color of the outdoor
terminal and indoor terminal
correspond respectively.
5. Wrap the cable not connected to
the terminal block with insulation
tape so that they will not come
in contact with any electrical
components. Secure the cable onto
the control board with the cord
clamp.
Electrical box
cover
Terminal block of indoor unit
Cable
Code wire
0.39"
N(1) 2
3
1.57"
To Outdoor Unit
17 Electrical work
Connect the cable to the outdoor unit
1. Remove the electrical control board
cover from the outdoor unit by
loosening the screw.
2. Connect the connective cables to
the terminals as identified with their
respective matched numbers on
the terminal block of indoor and
outdoor units. The connective cable
to power supply shall be approved
polychloroprene sheathed flexible
cord.
3. Secure the cable onto the control
board with the cord clamp.
4. To prevent the ingress of water,
form a loop of the connective cable
as illustrated in the installation
diagram of indoor and outdoor
units.
5. Insulate unused cords (conductors)
with PVC-tape. Process them so they
could not touch any electrical or
metal parts.
Cover
Screw
Indoor unit A
Indoor unit B
Indoor unit C
L1 L2
26000 Btu/h Multi split terminal block
Single split terminal block
Indoor unit A
Indoor unit B
Indoor unit C
Indoor unit D
Indoor unit E
L1 L2
33400 Btu/h Multi split terminal block
Electrical work 18
Caution
After the confirmation of the above conditions, prepare the wiring as follows:
1. Never fail to have an individual power circuit specifically for the air
conditioner. As for the method of wiring, be guided by the circuit diagram
posted on the inside of control cover.
2. The screws which fasten the wiring in the casing of electrical fittings are liable
to come loose from vibrations to which the unit is subjected during the course
of transportation. Check them and make sure that they are all tightly fastened.
(If they are loose, it could cause burn-out of the wires.)
3. Specification of power source.
4. Confirm that electrical capacity is sufficient.
5. See to that the starting voltage is maintained at more than 90 percent of the
rated voltage marked on the name plate.
6. Confirm that the cable thickness is as specified in the power source
specification.
7. Always install an earth leakage circuit breaker in a wet or moist area.
8. The following would be caused by voltage drop: vibration of a magnetic
switch, which will damage the contact point, fuse breaking, disturbance of the
normal function of the overload protector.
9. The means for disconnection from a power supply shall be incorporated in the
fixed wiring and have an air gap contact separation of at least 1/8" in each
active (phase) conductors.
Purging the system
Air and moisture in the refrigeration system have undesirable effects as indicated
below:
1.
2.
3.
4.
5.
Pressure in the system rises.
Operating current rises.
Cooling or heating (only for models with heating function) efficiency drops.
Moisture in the refrigerant circuit may freeze and block capillary tubing.
Water may lead to corrosion of parts in the refrigeration system.
Therefore, the indoor unit and tubing between the indoor and outdoor unit must
apply leakage test and be evacuated to remove any noncondensables and
moisture from the system.
19 Electrical work
Purging the system with a vacuum pump
1. Check that each tube (both liquid and gas side tubes) between the indoor and
outdoor units have been properly connected and all wiring for the test run
has been completed. Remove the service valve caps from both the gas and
the liquid side on the outdoor unit. Note that both the liquid and the gas side
service valves on the outdoor unit are kept closed at this stage.
2. When relocating the unit to another place, perform evacuation using vacuum
pump.
3. Oil trap should be installed every 16'-25' (no oil trap needed when outdoor
unit installed at a lower place than indoor unit).
4. Pipe length and refrigerant amount for single split type air conditioner.
(see tabel 2.2)
Outdoor unit
Outdoor unit
Oil trap
(A)
(B)
(A)
(B)
Indoor unit
Indoor unit
Piping length under 16'
Piping length 16' or more
Table 2.2
Additional amount of
refrigerant to be charged
Cooling capacity
(BTU/h)
System
Connective pipe
length (A)
Max height
difference (B)
9000
Heat Pump
25'~49'
16'
Use vacuum pump.
R410a: 0.22ozs/ft (Pipe length-25')
12000
Heat Pump
25'~66'
33'
Use vacuum pump.
R410a: 0.22ozs/ft (Pipe length-25')
18000
Cooling Only
25'~82'
33'
Use vacuum pump.
R410a: 0.16ozs/ft (Pipe length-25')
18000
Heat Pump
25'~82'
33'
Use vacuum pump.
R410a: 0.22ozs/ft (Pipe length-25')
21400
Cooling Only
25'~82'
33'
Use vacuum pump.
R410a: 0.16ozs/ft (Pipe length-25')
21400
Heat Pump
25'~82'
33'
Use vacuum pump.
R410a: 0.54ozs/ft (Pipe length-25')
28000
Heat Pump
25'~98'
66'
Use vacuum pump.
R410a: 0.54ozs/ft (Pipe length-25')
33600
Heat Pump
25'~98'
66'
Use vacuum pump.
R410a: 0.54ozs/ft (Pipe length-25')
Air purging
Purging the system 20
5. Pipe length and refrigerant amount for multi split type air conditioner.
(see tabel 2.3)
Table 2.3
Cooling capacity
(BTU/h)
Max connective pipe
total length (H1)
Connective pipe
length (Lx)
Max height
difference (H2)
Air purging
Additional amount of
refrigerant to be charged
26000
25'~66'
(x=1, 2, 3)
197'
(H1=L1+L2+...+Lx, x≤3)
50'
Use vacuum pump. R410a: 0.22ozs/ft (Pipe length-82')
34400
25'~82'
(x=1, 2, 3, 4, 5)
246'
(H1=L1+L2+...+Lx, x≤5)
50'
Use vacuum pump. R410a: 0.22ozs/ft (Pipe length-131')
H1
Outdoor unit
Lx
L1
L2
L3
L4
L5
a
b
c
d
e
Indoor unit
Caution in handling the packed valve integrated in the
outlets of outdoor unit.
1. Operation of opening packed valve: Open the valve stem until it hits against
the stopper. Do not try to open it further.
2. Operation of closing packed valve: Securely tighten the valve stem with a
special tool. Then securely tighten the valve stem cap with a spanner or the
like. Refer to the table on page 17 for valve cap tightening torque.
Note: There is a charging port integrated in the low side outlet, but not in the
high side outlet. The low side outlet is shown in the sketch map below.
Refrigerant
Outdoor unit
A
Flare nut
Indoor unit
Gas
Valve body
C
Cap
D
B
Packed valve
Charge port
Half union
Valve stem
Stopper
21 Purging the system
When using the vacuum pump
For method of using a manifold valve, refer to its operation manual.
1. Completely tighten the flare nuts at
connection point A, B, C and D.
Connect valve core removal tool
to the charging port, then connect
vacuum hose to valve core tool.
Open the schrader valve.
Note: The schrader valve is inside the
charging port.
2. Connect the other charge hose
of manifold valve to the vacuum
pump.
3. Fully open the Low Side handle of
the manifold valve.
4. Operate the vacuum pump to
evacuate. After starting evacuation,
slightly loose the flare nut of the
Low Side valve on the gas pipe
side and check if the air is entering
(Operation noise of the vacuum
pump changes and a compound
meter indicates 0 instead of
minus), then tighten the flare nut.
The procedure verifies if there are
blocks inside the tubes.
5. Make evacuation for 15 minutes or
more and check that the compound
meter indicates -7-3/5 x 10
Microns Hg (-1x10 Pa). After the
evacuation is completed, fully close
the Low Side handle of the manifold
valve and stop the operation of the
vacuum pump.
6. Turn the stem of the packed valve
B about 45o counterclockwise
for 6~7 seconds after the gas
comes out, then tighten the flare
nut again. Make sure the pressure
display in the pressure indicator is
Indoor unit
Outdoor unit
Manifold Valve
Charge
Hose
-76cm/Hg
High Side
Low Side
Charge Hose
Vacuum pump
a little higher than the atmospheric
pressure. This procedure verifies
if the refrigerant goes through the
tubes correctly.
7. Close the schrader valve, then
remove the valve core tool. Replace
the charging port cap.
8. Fully open the packed valve stems B
and A.
9. Securely tighten the cap of the
packed valve.
Purging the system 22
Electrical safety
Perform the electric safety check after completing installation:
1. Insulated resistance: The insulated resistance must be more than 2M.
2. Grounding work: After finishing grounding work, measure the grounding
resistance by visual detection and grounding resistance tester. Make sure the
grounding resistance is less than 4.
3. Electrical leakage check (performing during test running): During test
operation after finishing installation, the serviceman can use the electric
probe and multimeter to perform the electrical leakage check. Turn off the unit
immediately if electrical leakage happens. Check and find out the solution
ways till the unit operates properly.
Gas leak check
Soap water method
Apply a soap water or a liquid
neutral detergent on the indoor unit
connection or outdoor unit connections
by a soft brush to check for leakage
of the connecting points of the piping.
If bubbles come out, the pipes have
leakage point.
indoor unit
check point
Cover
Leak detector
Use the leak detector to check for
leakage.
Outdoor unit
check point
Caution
A: Low side valve, B: High side valve
valve C and D are ends of indoor unit
connection.
23 Electrical safety & Gas leak check
Initial operation test
Perform test operation after completing gas leak check at the flare nut
connections and electrical safety check.
1. Connect the power, press the ON/OFF button on the remote controller to turn
the unit on.
2. Use the MODE button to select COOL, HEAT (Only for models with heating
function), AUTO and FAN to check if all the functions work well.
3. When the ambient temperature is too low(lower than 63 oF), the unit cannot
be controlled by the remote controller to run in cooling mode, manual
operation can be taken. Manual operation is used only when the remote
controller is disable or maintenance necessary.
Auto/2))
Manual control button
Initial operation test 24
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