Heat Controller Energy Knight HMC30AS-1 User manual

HMC30AS-1/HMH30AS-1, HMC30BS-1/HMH30BS-1Single-Zone

INSTALLATION OVERVIEW
2
The following should be always
observed for safety....................3
Installation of indoor, outdoor
unit................................................4
Flaring work and connection of
piping...........................................6
Connection of piping(Indoor)...... 7
For left rear piping
For right rear piping
Connection of piping(Outdoor)
................................................12
Connecting the cable between
indoor unit and outdoor unit......
....................................................13
Checking the drainage and
Forming the piping..................15
Air purging ...............................17
Charging ...................................19
Test running .............................20
❏ Installation plate
❏Four type "A" screws
❏Connecting cable
❏Pipes: Suction line................5/8"
Evaporator line..........3/8"
(Refer to page 4)
❏Insulation materials
❏Additional drain pipe
(
Outer Diameter....15.5mm(0.61in))
❏Two type "B" screws
❏Level gauge
❏Screw driver
❏Electric drill
❏Hole core drill(ø70mm(2.76in))
❏Flaring tool set
❏Specified torque wrenches
4.2kg.m, 6.6kg.m
(different depending on model No.)
(Refer to page 10)
❏Spanner......................Half union
❏A glass of water
❏Screw driver
❏Hexagonal
wrench(4mm(0.16in))
❏Gas-leak detector
❏Vacuum pump
❏Gauge manifold
❏Owner's manual
❏Thermometer
❏Holder Remote Control
Installation
Requirements Required Parts Required Tools
Installation Parts Provided
1. Type "A" screw
2. Installation Plate
3. Type "B" screw
4. Holder Remote Control

THE FOLLOWING SHOULD BE ALWAYS OBSERVED FOR SAFETY
3
■
Be sure to read "THE FOLLOWING SHOULD BE ALWAYS OBSERVED FOR SAFETY" before installing the air
conditioner.
■ Be sure to observe the cautions specified here as they include important items related to safety.
■ The indications and meanings are as follows.
■ After reading this instructions, be sure to keep it together with the owner's manual in a handy place on the
customer's site.
WARNING : Could lead to death, serious injury, etc.
CAUTION
: Could lead to serious injury in particular environments when operated
incorrectly.
WARNING
Incorrect installation could cause injury due to fire,
electric shock, the unit falling or leakage of water.
Consult the dealer from whom you purchased the
unit or special installer.
Do not install it yourself (customer).
When installed in an insufficiently strong place,
the unit could fall causing injury.
Install the unit securely in a place which can bear
the weight of the unit.
Incorrect connection and fixing could cause fire.
Use the specified wires to connect the indoor and
outdoor units securely and attach the wires firmly
to the terminal board connecting sections so the
stress of the wires is not applied to the sections.
If the electrical part cover of the indoor unit and/or
the service panel of the outdoor unit are not
attached securely, it could result in a fire or
electric shock due to dust, water, etc.
Attach the electrical part cover to the indoor unit
and the service panel to the outdoor unit securely.
The use of defective parts could cause an injury
due to a fire, electric shock, the unit falling, etc.
Be sure to use the part provided or specified parts
for the installation work.
Check that the refrigerant gas does not leak after
installation is completed.
Incorrect installation could cause a personal
injury due to fire, electric shock, the unit falling
or leakage of water.
Perform the installation securely referring to the
installation instruction.
If the capacity of the power circuit is insufficient
or there is incomplete electrical work, it could
result in a fire or an electric shock.
Perform electrical work according to the installation
manual and be sure to use an exclusive circuit.
CAUTION
If there is a defect in the drainage/piping work,
water could leak from the unit and household
goods could get wet and be damaged.
Perform the drainage/piping work according
to the installation instruction.
If gas leaks and accumulates in the area
surrounding the unit, it could cause an explosion.
Do not install the unit in a place where an
inflammable gas leaks.
■ For maximum product life and efficiency
this unit has been designed, in the heating
mode, to lock-out at outdoor temperatures
below 26-29degF.
At outdoor temperatures below 26-29degF.
another means of heating the conditioned
space must be provided.

4
INSTALLATION OF INDOOR, OUTDOOR UNIT
Read completely, then follow step by step.
Select the best location
Indoor unit
■ Do not have any heat or steam near the
unit.
■ Select a place where there are no
obstacles in front of the unit.
■ Make sure that condensation drainage
can be conveniently routed away.
■ Do not install near a doorway.
■ Ensure that the space around the left and
right of the unit is more than 30cm(11.8in).
The unit should be installed as high on the
wall as possible, allowing a minimum of
12cm(4.7in) from ceiling.
■ Use a stud finder to locate studs to
prevent unnecessary damage to the wall.
Outdoor unit
■ If an awning is built over the unit to
prevent direct sunlight or rain exposure,
make sure that heat radiation from the
condenser is not restricted.
■ Ensure that the space around the back and
sides is more than 10cm(3.9in). The front
of the unit should have more than
70cm(27.6in) of space.
■ Do not place animals and plants in the
path of the warm air.
■ Take the air conditioner weight into
account and select a place where noise
and vibration are minimum.
■Select a place so that the warm air and
noise from the air conditioner do not
disturb neighbors.
■
Rooftop Installations:
If the outdoor unit is installed on a roof structure, be
sure to level the unit. Ensure the roof structure and
anchoring method are adequate for the unit location.
Consult local codes regarding rooftop mounting.
If the outdoor unit is installed on root structures or walls,
this may result in excessive noise and vibration, and
maybe also classed as non serviceable installation.
Piping length and elevation
More than
12cm(4.7in)
More than
30cm(11.8in)
More than
30cm(11.8in)
More than 2.3m(7.6ft)
More than
10cm(3.9in)
More than
10cm(3.9in)
More than
60cm(23.6in)
More than
60cm(23.6in)
More than
70cm(27.6in)
Pipe Size
Capacity
(Btu/h)
30k
Suction Evap
Max.
length
A m(ft)
Additional
Refrigerant
g/m(oz/ft)
Max.
Elevation
Bm(ft)
Standard
Length
m(ft)
In case more than 5m(16.4ft)
A
B
•Capacity is based on standard length and maximum
allowance length is on the basis of reliability.
•Oil trap should be installed every 5~7meters (16.4~23.0ft).
Outdoor unit
Indoor unit
A
B
A
Oil trap
Outdoor unit
Indoor unit
B
CAUTION
Install the indoor unit on the wall where the height
from the floors more than 2.3meters(7.6ft).
A minimum pipe run of 7.5meters(24.6ft) is required
to minimize vibration & excessive noise.
CAUTION
5/8" 3/8" 7.5(25) 15(49) 30(98) 30(0.32)

5
How to mount installation plate
The wall you select should be strong and solid
enough to prevent vibration
Mount the installation plate on the wall with
four type A screws. If mounting the unit on a
concrete wall, use anchor bolts.
■ Mount the installation plate horizontally by
aligning the centerline using a level.
Measure the wall and mark the centerline. It
is also important to use caution concerning
the location of the installation plate-routing of
the wiring to power outlets is through the
walls typically. Drilling the hole through the
wall for piping connections must be done
safely.
5-7mm
(0.2~0.3")
Indoor WALL Outdoor
Installation Plate
Type "A" screw
A
B
Right rear pipingLeft rear piping
50mm(2.0in) ø70mm(2.8in)180mm
(7.1in)
115mm(4.5in)
■ Drill the piping hole with a ø70mm(0.0028in)
hole core drill. Drill the piping hole at either
the right or the left with the hole slightly
slanted to the outdoor side.
Drill a hole in the wall

6
Connection of piping
-Indoor
FLARING WORK AND CONNECTION OF PIPING
Flaring work
Main cause for gas leakage is due to defect in
flaring work. Carry out correct flaring work in the
following procedure.
Cut the pipes and the cable.
■
Use the piping kit accessory or the pipes
purchased locally.
■ Measure the distance between the indoor
and the outdoor unit.
■ Cut the pipes a little longer than measured
distance.
■ Cut the cable 1.5m(59.1in) longer than the
pipe length.
Burrs removal
■
Completely remove all burrs from the cut
cross section of pipe/tube.
■ 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.
A
B
Putting nut on
■
Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.
(not possible to put them on after flaring
work)
C
Copper
pipe
90¡Slanted Uneven Rough
Bar
Copper pipe
Clamp handle Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Pipe Reamer
Point down
Flaring work
■
Carry out flaring work using flaring tool as shown
below.
Firmly hold copper pipe in a die in the dimension
shown in the table above.
D
Check
■
Compare the flared work with figure below.
■ If flare is noted to be defective, cut off the flared
section and do flaring work again.
E
Outside diameter A
mm
mm inch
1/4
3/8
1/2
5/8
ø6.35
ø9.52
ø12.7
ø15.88
0~0.5
0~0.5
0~0.5
0~1.0
Flare nut
Copper tube
Right side panel
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged Cracked Uneven thickness
= Improper flaring =
Remove the 2 screws of right side panel
A

7
Main PCB
Low panel
Lower panel
CAUTION
When install, make sure
that the remaining parts
must be removed clearly
so as not to damage the
piping and drain hose,
especially power cord
and connecting cable.
Route the indoor tubing and the drain hose in
the direction of rear left.
Insert the connecting cable into the indoor unit
from the outdoor unit through the piping hole.
■Do not connect the cable to the indoor unit.
■Make a small loop with the cable for easy
connection later.
Drain hose
For left rear piping
A
B
Remove the front right side panel by the arrow.
■The connector can be disconnected by pulling it
while pressing the connector's hook.
■Remove the 1 screw
for fixing low panel.
B
Remove the lower panel by the arrow.
■Take care not to scratch the wall and mat to
drop.
C
Indoor unit installation
■Hook the indoor unit onto the upper portion of the
installation plate.(Engage the three hooks of the
rear top and rear lower of the indoor unit with the
upper edge and lower edge of the installation
plate.) Ensure that the hooks are properly seated
on the installation plate by moving it left and right.
D
NOTE: If the drain hose is routed inside the room,
insulate the hose with an insulation material*so that
dripping from "sweating"(condensation) will not damage
furniture or floors.
*Foamed polyethylene or equivalent is recommended.
Installation
plate
Three upper
hooks
Installation plate
Indoor unit
Three lower
hooks
Setting line
Tape the tubing, drain hose and the connecting
cable. Be sure that the drain hose is located at
the lowest side of the bundle. Locating at the
upper side can cause drain pan to overflow
inside the unit.
C
Connecting
cable
Loop
Gas side
piping
Liquid side
piping
Drain hose

Wrap the insulation material around the
connecting portion.
■ Overlap the connection pipe insulation material
and the indoor unit pipe insulation material. Bind
them together with vinyl tape so that there is no
gap.
F
Route the indoor tubing and the drain hose to
the required piping hole position.
A
Insert the piping, drain hose and the connecting
cable into the piping hole.
B
Plastic bands Insulation material
Drain pipe
Connecting cable
Vinyl tape(narrow)
Connection
pipe
Connecting cable
Vinyl tape
(wide) Wrap with vinyl tape
Indoor
unit pipe
Pipe
Connection pipe
Flare nut
Indoor unit tubing
Torque wrench
Spanner (fixed)
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
■When extending the drain hose at the indoor unit,
install the drain pipe.
■Tighten the flare nut with a wrench.
Pipe Size[Torque]
Capacity
(Btu/h) Suction Evaporator
■Wrap the area which accommodates the rear
piping housing section with vinyl tape.
■Bundle the piping and drain hose together by
wrapping them with vinyl tape over the range
within which they fit into the rear piping housing
section.
For right rear piping
Wrap with vinyl tape
Drain hose
Pipe
Vinyl tape(wide)
Drain hose
8
Connecting the pipings to the indoor unit and
drain hose to drain pipe.
■Put a couple drops of refrigerant oil on the face of
the flare before assembling taking care not to
add any contaminants.
■Align the center of the pipings and sufficiently
tighten the flare nut by hand.
E
Indoor unit tubing Flare nut Pipings
30k 5/8"[6.6kg.m] 3/8"[4.2kg.m]

9
Insert the connecting cable into the indoor unit.
■ Don't connect the cable to the indoor unit.
■Make a small loop with the cable for easy
connection later.
Tape the drain hose and the connecting cable.
•Connecting cable
C
D
Installation
plate
Three upper
hooks
Installation plate
Indoor unit
Three lower
hooks
Setting line
Connecting the pipings to the indoor unit and
the drain hose to drain pipe.
■Put a couple drops of refrigerant oil on the face of
the flare before assembling taking care not to add
any contaminants
■Align the center of the pipings and sufficiently
tighten the flare nut by hand.
■Tighten the flare nut with a wrench.
F
Indoor unit tubing Flare nut Pipings
Torque wrench
Indoor unit tubing
Spanner (fixed)
Connection pipe
Flare nut
30k 5/8"[6.6kg.m] 3/8"[4.2kg.m]
Pipe Size[Torque]
Capacity
(Btu/h) Suction Evaporator
E
Indoor unit installation
■Hook the indoor unit onto the upper portion of
the installation plate.(Engage the three hooks
of the rear top and rear lower of the indoor
unit with the upper edge and lower edge of
the installation plate.) Ensure that the hooks
are properly seated on the installation plate by
moving it left and right. Wrap the insulation material around the
connecting portion.
■
Overlap the connection pipe heat insulation and the
indoor unit pipe heat insulation material. Bind them
together with vinyl tape so that there is no gap.
G
Plastic bands Insulation material
Vinyl tape(narrow)
Connection
pipe
Connecting cable
Indoor
unit piping
Pipe
Vinyl tape
(wide) Wrap with vinyl tape
Vinyl tape
Adhesive
Drain hose
Indoor unit drain hose
(narrow)
■When extending the drain hose at the indoor unit,
install the drain pipe.
■Wrap the area which accommodates the rear
piping housing section with vinyl tape.

10
Reroute the pipings and the drain hose across
the back of the chassis.
Reinstall the parts to the original position.
■Refix the lower panel to the original position.
■The chassis bottom(A) should be connected to
the steel chassis(B) with green/yellow wiring
using two screws.
■Connect display conductor.
■Refix the front right side panel to the original
position with the two screws.
H
Piping for
passage through
piping hole
A
Green /Yellow wire
Green /Yellow wire
B
Main PCB
I
Drain hose Vinyl tape(narrow)
Pipe
Wrap with
vinyl tape(wide)
■Bundle the piping and drain hose together by
wrapping them with cloth tape over the range
within which they fit into the rear piping housing
section.

11
■ Unfold the tubing to downward slowly. ( )
■ Bend the tubing to the left side of chassis.
Installation Information (For left piping)
• Good case
For left piping. Follow the instruction below.
■ Press on the upper side of clamp. ( )
• Bad case
■
Following bending type from right to left could
cause problem of pipe damage.
CAUTION CAUTION

12
Connection of piping
-Outdoor
Put a couple drops of refrigerant oil on the
face of the flare before assembling taking
care not to add any contaminants.
Align the center of the pipings and
sufficiently tighten the flare nut by hand.
Connection of the
drain hose
■The drain hose can be connected at two different
positions. Use the most convenient position and,
if necessary, exchange the position of the drain
pan, rubber cap and the drain hose.
➊ Drain pan
➋ Rubber cap
➌ Drain hose
➍ Exchange if necessary
■Remove the drain hose.
■Securely insert both the rubber plug and drain
hose into the drain outlets.
Be sure the rubber the cap is securely fastened
so that there is no leakage.
Finally, tighten the flare nut with torque
wrench until the wrench clicks.
■When tightening the flare nut with torque
wrench, ensure the direction for tightening
follows the arrow on the wrench.
A
B
C
Outdoor unit
Suction Line piping
(Bigger diameter)
Evaporator Line
piping
(Smaller
diameter)
Torque wrench
30k 5/8"[6.6kg.m] 3/8"[4.2kg.m]
Pipe Size[Torque]
Capacity
(Btu/h) Suction Evaporator
1
2
3
4

13
CAUTION
Ø8.5mm
(0.33in)
20mm
(0.79in)
GN/YL
AWG #12
20mm
(0.79in)
GN/YL
AWG #20
The power supply cord connected to the outdoor
unit should be complied with the following
specifications (UL and CSA recognized one).
The connecting cable connected to the indoor
and outdoor unit should be complied with the
following specifications (UL and CSA
recognized one).
Ø7.5mm (0.30in)
Connect the cable to the
Indoor unit.
■Connect the cable to the indoor unit by
connecting the wires to the terminals on the
control board individually according to the
outdoor unit connection.
(Ensure that the color of the wires of the
outdoor unit and the terminal No. are the same
as those of the indoor unit.)
REDBLUE BROWN
4(L2) Terminals on the indoor unit 3(L1) 5
4(L2)
Terminals on the outdoor unit
Color of Wires
POWER INPUT
Color of Wires
3(L1)2(L2)1(L1) 5
G/Y
REDBLUE BROWN G/Y
CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT
Outdoor
unit
Indoor
unit
Main power source
61cm max
(24 in max)
61cm max
(24 in max)
Outdoor Disconnect Switch
•Must be rated for 30 amps
Disconnect Switch (Optional)
•May be required by local codes
•Must be rated for 15 amps
Wiring must be as following diagram.
CAUTION

14
Connect the cable to the
outdoor unit
Remove the control cover from the unit by
loosening the screw.
Connect the wires to the terminals on the
control board individually.
Secure the cable onto the control board with
the cord clamp.
Refix the control cover to the original
position with the screw.
Use a recognized circuit breaker 30A (30k)
between the power source and the unit. A
disconnecting device to adequately disconnect
all supply lines must be fitted.
A
B
C
D
Terminal block
Over 5mm
(2")
Cover control
Conduit panel
Connecting
cable
Power supply
cord
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 screw 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.
(Particularly note the relation between cable length and thickness. (Refer to page 13))
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.
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 3mm(0.12in) in each
active(phase) conductors.
Outdoor Unit
CAUTION

15
CHECKING THE DRAINAGE AND FORMING THE PIPINGS
Checking the drainage
Right side panel
Lower panel
To check the drainage.
■
Pour a glass of water on the drain pan.
■ Ensure the water flows through the drain
hose of the indoor unit without any leakage
and goes out the drain exit.
D
Drain piping
■
The drain hose should point downward for
easy drain flow.
E
■ Do not make drain piping.
Downward slope
Do not raise Accumulated
drain water
Tip of drain hose
dipped in water
Air
Waving
Water
leakage
Water
leakage Ditch
Less than
50mm gap
Water
leakage
Remove the right side panel.
A
Remove the lower panel by the arrow.
B
Left side panel
Remove the left side panel.
(Remove the two screws.)
C

16
Form the piping
Form the piping by wrapping the
connecting portion of the indoor unit with
insulation material and secure it with two
kinds of vinyl tapes.
■
If you want to connect an additional drain
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.
In cases where the outdoor unit is
installed below the indoor unit perform
the following.
■Tape the piping, drain hose and
connecting cable from down to up.
■Secure the tapped piping along the exterior
wall using saddle or equivalent.
A
B
Taping
Drain
hose
Pipings
Connecting
cable
Trap is required to prevent water
from entering into electrical parts.
Seal small openings
around pipings with a
gum type sealer.
In cases where the Outdoor unit is
installed above the Indoor unit perform
the following.
■Tape the piping and connecting cable from
down to up.
■Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
■Fix the piping onto the wall by saddle or
equivalent.
C
Seal a small opening
around the pipings
with gum type sealer.
Trap
Trap

17
AIR PURGING
Air purging
Air and moisture remaining in the refrigerant
system have undesirable effects as indicated
below.
■ Pressure in the system rises.
■ Operating current rises.
■ Cooling(or heating) 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 be leak tested
and evacuated to remove any noncondensables
and moisture from the system.
Air purging with vacuum
pump
Preparation
■
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.
Leak test
■
Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to
this service port with charge hoses.
■ Pressurize the system to no more than 150
P.S.I.G. with dry nitrogen gas and close the
cylinder valve when the gauge reading
reached 150 P.S.I.G. Next, test for leaks with
liquid soap.
Lo Hi
Indoor unit
Outdoor unit
Manifold valve
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Pressure
gauge
A
B
■ Do a leak test of all joints of the tubing(both
indoor and outdoor) and both gas and liquid side
service valves.
Bubbles indicate a leak. Be sure to wipe off the
soap with a clean cloth.
■ After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening the
charge hose connector at the nitrogen cylinder.
When the system pressure is reduced to normal,
disconnect the hose from the cylinder.
Be sure to use a manifold valve for air
purging. If it is not available, use a stop valve
for this purpose. The "Hi" knob of the manifold
valve must always be kept close.
To avoid nitrogen entering the refrigerant system in a
liquid state, the top of the cylinder must be higher than its
bottom when you pressurize the system. Usually, the
cylinder is used in a vertical standing position.
CAUTION
CAUTION

18
Evacuation
■
Connect the charge hose end described in the
preceding steps to the vacuum pump to
evacuate the tubing and indoor unit.
Confirm the "Lo" knob of the manifold valve is
open. Then, run the vacuum pump.
The operation time for evacuation varies with
tubing length and capacity of the pump. The
following table shows the time required for
evacuation.
■ When the desired vacuum is reached, close the
"Lo" knob of the manifold valve and stop the
vacuum pump.
Finishing the job
■
With a service valve wrench, turn the valve stem
of liquid side valve counter-clockwise to fully
open the valve.
■ Turn the valve stem of gas side valve
counter-clockwise to fully open the valve.
■ Loosen the charge hose connected to the gas side
service port slightly to release the pressure, then
remove the hose.
■ Replace the flare nut and its bonnet on the gas side
service port and fasten the flare nut securely with an
adjustable wrench. This process is very important to
prevent leakage from the system.
■ Replace the valve caps at both gas and liquid side
service valves and fasten them tight.
This completes air purging with a vacuum pump.
The air conditioner is now ready to test run.
C
D
(1) Remove the caps from the gas side and liquid
side valves.
(2) Remove the service-port cap from the gas side
valve.
(3) To open the gas side valve turn the valve stem
counterclockwise approximately 90°, wait for
about 2~3 sec, and close it.
(4) 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.
(5) If bubbles come out, the pipes have leakage.
Soap water method
Suction Line
Evap Line
Cap
Hexagonal wrench
3-way valve
(Open)
3-way valve
(Close)
Required time for evacuation when 30 gal/h
vacuum pump is used
10 min. or more 15 min. or more
If tubing length is less
than 10m (33 ft) if tubing length is longer
than 10m (33 ft)
Indoor unit
Outdoor unit
Lo Hi
Manifold valve
Vacuum pump
Pressure
gauge
Open Close

19
■Each outdoor unit is factory charged (nameplate charge)
for the evaporator as well as a 7.5m(25ft) line set.
Any time a line set is used either shorter or longer then
the nominal 7.5m(25ft) line set length the refrigerant
charge has to adjusted.
■Whether the line set is made shorter or longer you must
adjust the charge based on how many ft of tubing are
either added or removed based on 30g(0.32oz) of R-22
per meter(foot).
Example: A 30ft line set is used
5 additional ft X 0.32 ounces per foot= add
1.6 ounces of R-22
Important:
If you are ever uncertain of the unit charge, reclaim,
evacuate and weigh in the correct charge using the unit
nameplate charge adjusting for line sets longer or shorter
than 7.5m(25ft).
CHARGING
Pipe Size
Capacity
(Btu/h)
30k
Suction Evap
Max.
length
A m(ft)
Additional
Refrigerant
g/m(oz/ft)
Max.
Elevation
Bm(ft)
Standard
Length
m(ft)
5/8" 3/8" 7.5(25) 15(49) 30(98) 30(0.32)

20
Outside ambient TEMP. The pressure of the gas side service valve
35°C(95°F) 4~5kg/cm2 G(56.8~71.0 P.S.I.G.)
TEST RUNNING
Settlement of outdoor unit
■
Anchor the outdoor unit with a bolt and
nut(ø10mm(0.39in) tightly and horizontally on a
concrete or rigid mount.
■ When installing on the wall, roof or rooftop, anchor
the mounting base securely with a nail or wire
assuming the influence of wind and earthquake.
■ In the case when the vibration of the unit is
conveyed to the hose, secure the unit with an
anti-vibration rubber.
1. Check that all tubing and wiring have been
properly connected.
2. Check that the gas and liquid side service valves
are fully open.
Prepare remote control
Remove the battery cover
by pulling it according to the
arrow direction.
Insert new batteries making
sure that the (+) and (–) of
battery are installed correctly.
Reattach the cover by
pushing it back into position.
NOTE:
• Use 2 AAA(1.5volt) batteries. Do not use
rechargeable batteries.
• Remove the batteries from the remote control if
the system is not going to be used for a long
time.
Evaluation of the performance
Operate unit for 15~20 minutes, then check the
system refrigerant charge:
1. Measure the pressure of the gas side service
valve.
2. Measure the temperature of the intake and
discharge of air.
NOTE: If the actual pressure are higher than shown, the
system is most likely over-charged, and charge
should be removed. If the actual pressure are
lower than shown, the system is most likely
undercharged, and charge should be added.
The air conditioner is now ready for use.
A
C
B
Bolt
Tubing connection
This is performed when the unit is to be
relocated or the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant in the
outdoor unit without loss in refrigerant gas.
CAUTION:
Be sure to perform Pump Down procedure with the
unit cooling mode.
Pump Down Procedure
1. Connect a low-pressure gauge manifold hose to the
charge port on the gas side service valve.
2. Open the gas side service valve halfway and purge
the air from the manifold hose using the refrigerant
gas.
3. Close the liquid side service valve(all the way in).
4. Turn on the unit's operating switch and start the
cooling operation.
5. When the low-pressure gauge reading becomes 1
to 0.5kg/cm2 G(14.2 to 7.1 P.S.I.G.), fully close the
gas side valve stem and then quickly turn off the
unit. At that time, Pump Down has been completed
and all refrigerant gas will have been collected in
the outdoor unit.
PUMP DOWN
3. Ensure the difference between the intake
temperature and the discharge is more than
8°C(46.4°F) (Cooling) or reversely (Heating).
4. For reference; the gas side pressure of optimum
condition is as below.(Cooling)
Discharge
temperature
Discharge air
Intake temperature