Rinnai Pro Series User manual

Models
System Indoor Outdoor
HSNRP26 HINRP26M HONRP26
HSNRP35 HINRP35M HONRP35
HSNRP50 HINRP50M HONRP50
HSNRP60 HINRP60M HONRP60
HSNRP70 HINRP70M HONRP70
HSNRP80 HINRP80 HONRP80
Installation guide
Pro Series High Wall Split Heat Pump / Air Conditioner

Important
This appliance must be installed in accordance with:
- Manufacturer’s installation instructions
- Current AS/NZS 3000, AS/NZS 5141, AS/NZS 5419, AS/NZS 1677,
AS/NZS 60335.2.40, and G12/AS1
Appliance must be installed, commissioned and serviced by an
authorised person.
Warning
Improper installation, adjustment, alteration, service and maintenance
can cause property damage, personal injury or loss of life.
For more information about buying, using, and servicing of Rinnai
appliances call: 0800 RINNAI (0800 746 624).
Rinnai New Zealand Limited
105 Pavilion Drive, Mangere, Auckland
PO Box 53177, Auckland Airport, Auckland 2150
Phone: [phone]
Email: [email protected]
Web: rinnai.co.nz
youtube.com/rinnainz
facebook.com/rinnainz

Safety messages / important information .............4
Pro Series specication summary ........................6
Component description.........................................7
Installation overview .............................................7
Positioning and clearances - indoor unit...............8
Positioning and clearances - outdoor unit ............9
Indoor installation .................................................10
Outdoor installation...............................................13
Refrigerant piping connection...............................15
Evacuation............................................................17
Electrical and gas leak checks .............................18
Test run.................................................................19
Installation checklist..............................................20
Appendix 1
Mounting plate dimensions...................................21
Appendix 2
Error code summary.............................................22
Contents

4|
Safety messages / important information
This appliance is heavy, use two people or a mechanical lifting device.
Improper lifting may result in serious injury.
For safety and warranty, appliances that are damaged MUST NOT be installed or operated under
any circumstances.
Electrical warnings
DO NOT modify the electrical wiring of this appliance. If the control power wiring is
damaged or deteriorated then it must be replaced by an authorised person. Failure to do so
may result in electric shock, re, serious injury, or product failure.
All wiring must be properly arranged to ensure that the control board cover can close properly. If
the control board cover is not closed properly, it can lead to corrosion and cause the connection
points on the terminal to heat up, catch re, or cause electrical shock.
The PCB is designed with a fuse to provide overcurrent protection. The specications of the fuse are
printed on the PCB. For units using R32 refrigerant, only a blast-proof ceramic fuse can be used.
Only connect the unit to an individual branch circuit outlet. Do not connect another appliance to that
outlet.
Electrical wires
This a Class 1 electrical appliance. Make sure the live wire, neutral wire, and earth wire in the
power socket are properly connected. Inadequate or incorrect electrical connections may cause
re or electric shock.
The yellow-green wire in the air conditioner is the earthing wire which cannot be used for any other
purpose. Improper earthing may cause electric shock. The unit must be earthed in accordance with
local regulations.
Every wire must be rmly connected. Loose wiring can cause the terminal to overheat, resulting in
a product malfunction and possible re.
Do not let live wires touch or rest against refrigerant tubing, the compressor, or any moving parts
within the unit.
Circuit breaker
The circuit break must have the functions of magnetic tripping and heat tripping to prevent short
circuiting and/or overload. Use a standard circuit breaker and fuse conforming with the rating of the
appliance.
Fixed wiring
If connecting power to xed wiring1:
• A surge protector and mains power switch should be installed.
• A switch or circuit breaker that disconnects all poles and has a contact separation of at least
⅛ ″(3 mm) must be incorporated in the xed wiring.
HEAVY
Use two people or
a mechanical lifting device
WARNING
1 Consult a qualied electrician as it must comply with AS/NZS 5601 and AS/NZS 3000 and other relevant local
regulations.

| 5
R32 refrigerant
This appliance uses R32 (diuoromethane) refrigerant, which is a ammable gas, class 2.2
according to AS/NZS 1677 and must be handled by a qualied person with the appropriate
refrigerant handling licence.
Make sure to check for and rectify any refrigerant leaks after you install or repair the unit.
Certain levels of refrigerant require minimum room sizes. Please ensure that these room sizes are
adhered to for standard installations (up to 10 m pipe length). If larger refrigerant charges than
standard are used then please consult AS/NZS 60335.2.40 to determine the safe minimum oor
area for the installation.
Make sure the area has been made safe by having suitable ventilation and is free from ignition
sources before charging or releasing the charge of R32.
Model 2.6 kW 3.5 kW 5.0 kW 6.0 kW 7.0 kW 8.0 kW
Standard charge (g) 900 900 1260 1260 1400 1400
Min. oor area (m2)4.0 4.0 4.0 4.0 4.0 4.0
Never mix refrigerant types.

6|
Pro Series specication summary
2.0kW 2.6kW 3.5kW 5.0kW 6.0kW 7.0kW 8.0kW
kW 22.65 3.55 5678
V - Ph - Hz
A16 16 16 20 20 25 25
Rated Capacity 22.65 3.55 5678
Capacity Range 0.80-2.90 1.00-3.50 1.50-4.90 2.10-7.20 2.10-7.20 2.95-9.00 2.95-9.00
Rated Power Input W415 530 820 1300 1800 1950 2350
Rated Current (Range) A1.8 2.5 3.8 5.8 88.7 10.2
AEER W/W 4.780 4.968 4.311 3.836 3.327 3.584 3.399
Star Rating* -5.5 / 5.0 / 5.5 6.0 / 5.5 / 6.0 5.0 / 4.0 / 5.0 4.5 / 4.0 / 4.5 4.0 / 3.5 / 4.0 3.5 / 3.5 / 4.0 3.5 / 3.5 / 3.5
Rated Capacity 2.25 2.7 45.2 6.2 7.5 8.5
Capacity Range 0.90-3.00 1.40-4.00 1.80-5.10 2.50-7.80 2.50-7.80 3.50-9.50 3.50-9.50
Rated Power Input W460 510 920 1350 1700 1950 2250
Rated Current (Range) A 2 2.5 5 6 7.5 8.7 10
ACOP W/W 4.856 5.259 4.332 3.842 3.640 3.839 3.772
Star rating* -3.5 / 3.0 / 3.0 4.0 / 3.5 / 3.0 4.0 / 3.0 / 2.0 3.0 / 2.5 / 2.0 3.0 / 2.0 / 1.5 3.5 / 2.5 / 1.5 3.0 / 2.0 / 1.5
W2100 2300 2300 3600 3600 4050 4050
A9.5 10.5 10.5 15.5 15.5 17.5 17.5
m² 9-13 11-17 16-23 23-33 27-40 32-47 36-53
2.0kW Indoor 2.6kW Indoor 3.5kW Indoor 5.0kW Indoor 6.0kW Indoor 7.0kW Indoor 8.0kW Indoor
L/s 153/128/94/75/47
175/139/100/83/5
6
183/147/106/86/5
8
264/222/167/139/
89
264/222/167/139/
89
382/303/250/229/
147
382/303/250/229/
147
L/h 0.80 1.00 1.20 1.80 2.10 2.40 3.00
m3/h
550/460/340/270/
170
630/500/360/300/
200
660/530/380/310/
210
950/800/600/500/
322
950/800/600/500/
322
1375/1090/900/82
5/530
1375/1090/900/82
5/530
dB(A) 53 55 56 57 59 63 64
dB(A)
43.0/38/31.5/30/2
5
46.4/39/32.5/30/2
4.5
46.7/39/32.5/30/2
4.5
47.1/44.5/38/34.5/
28
47.1/44.5/38/34.5/
28
57.645/39/33.5/29
.5
57.645/39/33.5/29
.5
Direction
Dimension (W x H x D) 729x200x291 802x200x295 802x200x295 971x228x321 971x228x321 1082x234x337 1082x234x337
Packing (W x H x D) 965×370×282 965×370×282 1010x385x307 1067×385×312 1205×400×317 1205×400×317 1205×400×317
Net / Gross Weight kg 8.0/10.3 8.5/11.1 8.5/11.1 11.1/14.4 11.1/14.4 13.3/17.0 13.3/17.0
Cooling
Heating
2.0kW Outdoor 2.6kW Outdoor 3.5kW Outdoor 5.0kW Outdoor 6.0kW Outdoor 7.0kW Outdoor 8.0kW Outdoor
54 57 57 65 66 65 67
53 55.5 55.5 59.5 59.5 61 61
Dimension (W x H x D) 765x303x555 805x330x554 805x330x554 890x342x673 890x342x673 890x342x673 890x342x673
Packing (W x H x D) 887x337x610 915x370x615 915x370x615 995x398x740 995x398x740 995x398x740 995x398x740
Net / Gross Weight kg 26.5/28.5 32.2/34.9 32.2/34.9 38.3/41.4 38.3/41.4 43.3/46.4 43.3/46.4
Type
Charged Volume kg 0.62 0.9 0.9 1.26 1.26 1.4 1.4
Pipe Size: Liquid / Gas mm
6.35mm(1/4in)
/9.52mm(3/8in)
6.35mm(1/4in)/
9.52mm(3/8in)
6.35mm(1/4in)/
9.52mm(3/8in)
6.35mm(1/4in)/
12.7mm(1/2in)
6.35mm(1/4in)/
12.7mm(1/2in)
9.52mm(3/8in)/
15.9mm(5/8in)
9.52mm(3/8in)/
15.9mm(5/8in)
Maximum Pipe Length 25 25 25 30 30 50 50
Chargeless Length 10 10 10 10 10 10 10
Extra Charge for Lengths
˃10m
g/m 12 12 12 12 12 24 24
Max. vert. separation m10 10 10 20 20 25 25
Cooling 0～50 0～52 0～52 0～50 0～50 -15～50 -15～50
Heating -15~24 -15~24 -15~24 -15~24 -15~24 -15~24 -15~24
Capacities tested in accordance with AS/NZS 3823.2, with 5m interconnecting pipe length. With our policy of continuous improvement, we reserve the right to change, or discontinue at any time,
specifications or designs without notice.
Outdoor Unit Model No.
Sound Power Level
dB(A)
Sound Pressure Level @ 1m
Dimensions
mm
Refrigerant
R32
m
Ambient
Temperature
Limits
°C
4-way swing
Operating Range °C
16～32
0～30
Nominal Capacity
Power Supply to Outdoor Unit
Dimensions
mm
Max. Input Power (Cooling / Heating)
Max. Input Current (Cooling / Heating)
Area Coverage (up to 2.6m insulated ceiling)
Indoor Unit Model No.
Air Flow (Turbo / Hi / Med / Lo / Min)
Moisture Removal
Air Flow (Turbo / Hi / Med / Lo / Min)
Sound Power Level
Sound Pressure Level @ 1m (Turbo / Hi / Med /
Lo / Min)
Air Swing Louvres
220~240 - 1 - 50
Recommended Circuit Breaker
Cooling
kW
Heating
kW
* Star rating: Hot and humid / mixed / cold
AEER: Annualised Energy E󰀩ciency Ratio
ACOP: Annualised Coe󰀩cient of Performance

| 7
Component description
Installation overview
Wall mounting plate
Front panel
Louvre
Small filter
Drainage pipe
Signal cable
Refrigerant piping
Remote
Remote holder
Outdoor unit power cable
Select installation location. Determine wall hole position. Attach mounting plate.
Drill hole in wall. Connect piping. Connect wiring.
Prepare drain hose. Wrap pipe and cable. Mount indoor unit.
123
456
7 8 9
2000 mm
120 mm
150 mm
120 mm

8|
Positioning and clearances - indoor unit
Install the unit on a wall that can support the unit’s weight. If the chosen location cannot support
the unit’s weight, or the installation is not done properly, the unit may drop and cause serious injury
and damage.
Do not install the unit in a location that may be exposed to combustible gas leaks. If combustible
gas accumulates around the unit, it may cause a re.
For R32 refrigerant models, appliance shall be installed and operated in a room with a oor area
larger than 4 m2.
When choosing a location be aware that there needs to be ample room for a hole for the signal
cable and refrigerant piping that connects the indoor and outdoor units. The default position
for all piping is to the right side of the indoor unit (while facing the unit). However the unit can
accommodate piping to the left and right.
Ensure the following:
5Good air circulation
5Convenient drainage
5Noise from the unit will not disturb others
5Firm and solid—location will not vibrate
5At least 1 m from other electrical devices
(e.g. TV, radio, computer)
DO NOT install:
6Near a doorway
6In a location subject to direct sunlight
6Near any source of heat, steam, or
combustible gas
6Near combustible items such as curtains or
clothing
6Near any obstacle that may block air
circulation
Required clearances
2000 mm
120 mm
150 mm
120 mm

| 9
Positioning and clearances - outdoor unit
Ensure the following:
5Good air circulation and ventilation
5Noise from the unit will not disturb others
5Firm and solid—location will not vibrate
5Protected from prolonged periods of direct
sunlight or rain
5Where snow is anticipated, raise the
unit above the base pad to prevent ice
buildup and cold damage. Mount the unit
high enough to be above the average
accumulated area snowfall.
DO NOT install:
6Near any source of combustible gas
6In locations exposed to excessive salty air
6In locations exposed to excessive dust
6Near an obstacle that will block the air inlets
and outlets
6Near animals or plants that will be harmed
by hot air discharge
6Where it will be exposed to sea wind (salt
spray) as this will reduce durability
Special considerations for extreme weather
If the unit is exposed to strong prevailing winds install the unit so that the air outlet fan is at a
90 degree angle to the direction of the wind. If needed, build a barrier in front of the unit to protect it
from extremely strong winds.
If the unit is exposed to heavy rain or snow, build a shelter above the unit. Be careful not to
obstruct air ow around the unit.
600 mm above
300 mm left
2
0
00
m
m
f
ront
3
0
0
m
m
b
ack
600 mm right
Strong wind
Strong wind
Wind
baffle
Strong
wind
Required clearances

10 |
Indoor installation
Select installation location
Refer notes and clearances diagram on p.8.
Attach mounting plate to wall
• Remove the screw that attaches the mounting plate to the back of the indoor unit.
• Secure the mounting plate to the wall with the screws provided. Make sure the mounting
plate is at against the wall.
If the wall is made of brick, concrete, or similar, drill 5 mm diameter holes in the wall and insert
sleeve anchors. Secure the mounting plate to the wall by tightening the screws directly to the
clip anchors.
Drill hole in wall for connective piping
Determine the location of the hole in the wall based on the position of the mounting plate.
Refer mounting plate dimensions on p.21 for the di󰀨erent model types.
Using a 65 mm or 90 mm core drill, drill a hole in the wall. When drilling
make sure to avoid wires, plumbing, and other sensitive components.
Make sure that the hole is drilled at a slight downward angle, so that the
outdoor end of the hole is lower than the indoor end by approximately
5-7 mm. This will ensure the water drains properly.
Place the protective wall cu󰀨 in the hole. This protects the edges of the
hole and will help seal it when the installation is nished.
Prepare refrigerant piping
The refrigerant piping is inside an insulating sleeve which is attached to the back of the unit.
You must prepare the piping before passing it through the hole in the wall.
Based on the position of the hole in the wall relative to the mounting
plate, choose the side from which the piping will exit the unit. If the hole
is behind the unit, keep the knockout panel in place. If the hole is to the
side of the indoor unit, remove the plastic knockout panel from that side
of the unit. This will create a slot through which your piping can exit. Use
needle nose pliers if the plastic panel is too di󰀩cult to remove by hand.
Connect the indoor unit’s refrigerant piping to the connective piping that will join the indoor
and outdoor unit. Be careful not to dent or damage the piping while bending away from the
unit. Any dents in the piping will a󰀨ect the unit’s performance.
5-7 mm
Knockout
panel
Refrigerant piping can exit the indoor unit from four di󰀨erent angles; left-hand
side, right-hand side, left rear, and right rear.
1.
2.
3.
4.

| 11
Connect drain hose
By default the drain hose is attached to the left-hand side of the unit (when facing the back of
the unit). However, it can also be attached to the right-hand side. To ensure proper drainage
attach the drain hose on the same side that your refrigerant piping exits the unit. Attach the
drain hose extension (purchased separately) to the end of the drain hose.
Wrap the connection point rmly with Teon tape to ensure a good seal to prevent leaks. For
the portion of drain hose that will remain indoors, wrap it with foam pipe insulation to prevent
condensation.
Remove the air lter and pour a small amount of water into the drain pan
to make sure that water ows from the unit correctly. To prevent unwanted
leaks plug the unused drain hole with the rubber plug provided.
CORRECT
Make sure there are
no kinks or dents in the
drain hose to ensure
proper drainage
INCORRECT
Kinks in the drain hose
will create water traps.
INCORRECT
Kinks in the drain hose
will create water traps.
INCORRECT
Do not place the
end in water or
other containers that
collect water. This
will prevent proper
drainage.
Connect signal and power cables
Before performing any electrical or wiring work, turn o󰀨 the mains power to the system.
All wiring must be performed in accordance with the wiring diagram located on the back
of the indoor unit’s front panel.
The signal cable enables communication between the indoor and outdoor units. You must
choose the right cable size before preparing it for connection. The size of the power supply
cable, signal cable, fuse, and switch is determined by the maximum current of the unit. The
maximum current is indicated on the data plate located on the side panel of the unit.
1. Open front panel of the indoor unit.
2. Using a screwdriver, open the wire box cover on the right side of the unit, this will reveal
the terminal block.
3. Unscrew the cable clamp below the terminal block and place it to the side.
4. Facing the back of the unit, remove the plastic panel on the bottom left-hand side.
5. Feed the signal wire through this slot, from the back of the unit to the front.
6. Facing the front of the unit, connect the wires according to the wiring diagram, connect the
u-lug and rmly screw each wire to its corresponding terminal.
7. Make sure every connection is secure, use the cable clamp to fasten the signal cable to
the unit. Screw the cable clamp down tightly.
8. Replace the wire cover on the front of the unit, and the plastic panel on the back.
WARNING
5.
6.

12 |
Indoor installation continued
Wrap piping and cables
Before passing the piping, drain hose, and the signal cable through the wall bundle them
together to save space, protect and insulate them.
Bundle the drain hose, refrigerant pipes, and signal cable
as shown. Make sure the drain hose is at the bottom of
the bundle. Putting the drain hose at the top can cause
the drain pan to overow, which can lead to re or water
damage.
While bundling, DO NOT intertwine or cross the signal
cable with any other wiring.
Using adhesive vinyl tape, attach the drain hose to the underside of the refrigerant pipes.
Using insulation tape, wrap the signal wire, refrigerant pipes, and drain hose tightly together.
When wrapping the bundle keep the ends of the piping unwrapped so they can be tested for
leaks at the end of the installation process.
Mount indoor unit
1. Check the ends of the refrigerant pipes are sealed to prevent dirt or foreign materials from
entering the pipes.
2. Slowly pass the wrapped bundle of refrigerant pipes, drain hose, and signal wire through
the hole in the wall.
3. Hook the top of the indoor unit on the upper hook of the mounting plate. Check that the
unit is hooked rmly by applying slight pressure to the left and right-hand sides of the unit.
The unit should not move.
4. Using even pressure, push down on the bottom half of the unit. Keep pushing down until
the unit snaps onto hooks along the bottom of the mounting plate. Check that the unit is
rmly mounted.
If the refrigerant piping is already embedded in the wall do the following:
1. Hook the top of the indoor unit on the upper hook of the mounting plate.
2. Use a bracket or wedge to prop up the unit, giving you enough room to connect the
refrigerant piping, signal cable, and drain hose.
3. Connect drain hose and refrigerant piping, refer previous pages.
4. Keep the pipe connection points exposed to perform the leak test. After the leak test wrap
the connection points with insulation tape.
5. Remove the bracket or wedge that is propping up the unit, and using even pressure, push
down on the bottom half of the unit. Keep pushing down until the unit snaps onto the
hooks along the bottom of the mounting plate.
Space behind unit
Refrigerant piping
Drain hose
Signal wire
Insulation tape
Unit is adjustable
Keep in mind that the hooks on the mounting plate are smaller than the holes on the back of the
unit. If you nd you don’t have enough room to connect embedded pipes to the indoor unit, the
unit can be adjusted left or right by 30-50 mm, depending on the model.
7.
8.

| 13
Outdoor installation
Select installation location
Refer notes and clearances diagram on p.9.
Install drain joint
Before bolting the outdoor unit in place, you must install the drain joint at the bottom of the unit
so condensate can be properly drained away so as not to cause property damage.
Anchor outdoor unit
The outdoor unit can be anchored to the ground or to a wall mounted bracket with M10 bolts.
The following is a list of di󰀨erent outdoor unit sizes and distances between their mounting
feet. Prepare the installation base of the unit according to the dimensions of the model being
installed.
Model Outdoor unit dimensions Mounting dimensions
Width - W Height - H Depth - D Distance A Distance B
2.6, 3.5 kW 805 mm 554 mm 330 mm 511 mm 317 mm
5.0, 6.0, 7.0, 8.0 kW 890 mm 673 mm 342 mm 663 mm 354 mm
If you install the unit on the ground or on a mounting platform do the following:
• Mark the positions for the four expansion bolts based on the model.
• Pre-drill holes for the expansion bolts.
• Place a nut on the end of each expansion bolt.
• Hammer the expansion bolts into the pre-drilled holes.
• Remove the nuts from the expansion bolts, and place the outdoor unit on the bolts.
• Put a washer on each expansion bolt, then replace the nuts.
• Using a wrench tighten each nut until snug.
If you install the unit on a wall mounted bracket do the following:
• Mark the position of the bracket holes based on the dimensions of the model.
• Pre-drill the holes for the expansion bolts.
• Place a washer and nut on the end of each expansion bolt.
• Thread expansion bolts through the holes in the mounting brackets, put the mounting
brackets in position, and hammer expansion bolts into the wall.
• Check the mounting brackets are level.
• Carefully lift the unit and place the mounting feet on the brackets.
• Bolt the unit rmly to the brackets.
• If applicable, install the unit with rubber gaskets to reduce vibration and noise.
A
B
D
W
H
Air inlet
Air inlet
Air outlet
1.
2.
3.

14 |
Outdoor installation continued
Connect signal and power cables
Before performing any electrical or wiring work, turn o󰀨 the mains power to the system.
All wiring must be performed in accordance with the wiring diagram located on the
inside of the wiring cover.
The signal cable enables communication between the indoor and outdoor units. You must
choose the right cable size before preparing it for connection. The size of the power supply
cable, signal cable, fuse, and switch is determined by the maximum current of the unit. The
maximum current is indicated on the data plate located on the side panel of the unit.
The outside unit’s terminal block is protected by an electrical wiring cover on the side of the
unit.
1. Prepare the cable for connection. Using wire strippers, strip the rubber jacket from both
ends of the cable to reveal approximately 40 mm of the wires inside. Strip the insulation
from the ends of the wires. Using a crimper, crimp u-lugs on the ends of the wires. While
crimping make sure to clearly distinguish the live wire from the other wires.
2. Unscrew the electrical wiring cover and remove it.
3. Unscrew the cable clamp below the terminal block and
place it to one side.
4. Connect the wires according to the wiring diagram, and
rmly screw the u-lug of each wire to it’s corresponding
terminal.
5. After checking to make sure every connection is secure, loop the wires around to prevent
rain water from entering into the terminal.
6. Using the cable clamp, fasten the cable to the unit. Screw the cable clamp down tightly.
7. Insulate unused wires with PVC electrical tape. Arrange them so that they do not touch
any electrical or metal parts.
8. Replace the wire cover on the side of the unit and screw it in place.
WARNING
Cover
Screw
4.

| 15
Refrigerant piping connection
Cut pipes
Be careful not to damage, dent, or deform the pipe while cutting. This will drastically reduce
the heating e󰀩ciency of the unit. When preparing refrigerant pipes, take extra care to cut
and are them properly. This will ensure e󰀩cient operation and minimise the need for future
maintenance and repair.
1. Measure the distance between the indoor and outdoor units.
2. Using a pipe cutter, cut the pipe a little longer than the measured distance.
3. Make sure that the pipe is cut at a perfect 90° angle.
Remove burrs
Burrs can a󰀨ect the airtight seal of the refrigerant pipe connection, they must be completely
removed.
1. Hold the pipe at a downward angle to prevent burrs from falling into the pipe.
2. Using a deburring tool, remove all burrs from the cut section of the pipe.
Flare pipe ends
Proper aring is essential to achieve an airtight seal.
1. After removing burrs from the cut pipe, seal the ends with PVC tape to prevent foreign
materials from entering the pipe.
2. Sheath the pipe with insulating material.
3. Place are nuts on both ends of the pipe. Make sure they are facing in the right direction.
You can’t put them on or change their direction after aring.
4. Remove PVC tape from ends of pipe when ready to perform aring work.
5. Clamp are form on the end of the pipe. The end of the pipe must extend beyond the edge
of the are form in accordance with the dimensions below.
Outer diam. of pipe (mm) A (mm)
Minimum Maximum
Ø 6.35 (Ø 0.25 “) 0.7 (0.0275 “) 1.3 (0.05 “)
Ø 9.52 (Ø 0.375 “) 1.0 (0.04 “) 1.6 (0.063 “)
Ø 12.7 (Ø 0.5 “) 1.0 (0.04 “) 1.8 (0.07 “)
Ø 16 (Ø 0.63 “) 2.0 (0.078 “) 2.2 (0.086 “)
Ø 19 (Ø 0.75 “) 2.0 (0.078 “) 2.4 (0.094 “)
When connecting refrigerant piping do not let substances or other gases other than the
specied refrigerant enter the unit. The presence of other gases or substances will lower
the unit’s capacity, and can cause abnormally high pressure in the refrigeration cycle.
This can cause explosion and injury.
The length of refrigerant piping will a󰀨ect the performance and energy e󰀩ciency of the unit.
Nominal e󰀩ciency is tested on units with a pipe length of 5 m—a minimum pipe run of 3 m is
required to minimise vibration and excessive noise.
WARNING
Oblique Rough Warped
90°
1.
2.
3.
Pipe
A

16 |
Refrigerant piping connection continued
Flare pipe ends continued
Place aring tool onto the form. Turn the handle of the aring tool clockwise until the pipe is
fully ared. Remove the aring tool and are form, then inspect the end of the pipe for cracks
and even aring.
Connect pipes
When connecting refrigerant pipes be careful not to use excessive torque
or to deform the piping in any way. You should rst connect the low-
pressure pipe, then the high pressure pipe. When bending connective
refrigerant piping, the minimum bend radius is 10 cm.
Connecting pipe to indoor unit
1. Align the center of the two pipes being connected.
2. Tighten the are nut as tightly as possible by hand.
3. Using a spanner, grip the nut on the unit pipe.
4. While rmly gripping the nut on the unit pipe, use a torque wrench to
tighten the are nut according to the torque values in the table below.
Loosen the are nut slightly then tighten again. DO NOT use excessive
torque, excessive force can break the nut or damage the refrigerant
piping.
Outer diam. of
pipe (mm)
Tightening torque (N•m) Flare dimension B
(mm)
Ø 6.35 (Ø 0.25 “) 18~20 (180-200 kgf.cm) 8.4~8.7 (0.33~0.34 “)
Ø 9.52 (Ø 0.375 “) 32~39 (320-390 kgf.cm) 13.2~13.5 (0.52~0.53 “)
Ø 12.7 (Ø 0.5 “) 49~59 (490-590 kgf.cm) 16.2~16.5 (0.64~0.65 “)
Ø 16 (Ø 0.63 “) 57~71 (570-710 kgf.cm) 19.2~19.7 (0.76~0.78 “)
Ø 19 (Ø 0.75 “) 67~101 (670-1010 kgf.cm) 23.2~23.7 (0.91~0.93 “)
Connecting pipe to outdoor unit
1. Unscrew the cover from the packed valve on the side of the outdoor unit.
2. Remove protective caps from ends of valves.
3. Align ared pipe end with each valve, and tighten the are nut as tightly as possible by
hand.
4. Using a spanner, grip the body of the valve. Do not grip the nut that
seals the service valve. Over tightening of the are nut can snap o󰀨
other parts of the valve.
5. While rmly gripping the body of the valve use a torque wrench to
tighten the are nut according to the torque values above.
6. Loosen the are nut slightly then tighten again.
7. Repeat steps 3-6 for the remaining pipe.
Radius ≥10 cm
Indoor unit pipe Flare nut Pipe
3.
4.
R0.4~0.8
90°±4
B
4
5
°
±
2
Flare shape

| 17
Evacuation
Air and foreign matter in the refrigerant circuit can cause abnormal rises in pressure, which can
damage the unit, reduce its e󰀩ciency, and cause injury. Use a vacuum pump and manifold gauge
to evacuate the refrigerant circuit, removing any residual gas and moisture from the system.
Evacuation should be performed upon initial installation and when the unit is relocated.
Before performing evacuation make sure the connecting pipes between the units, and all the
wiring, is connected properly.
Open valve stems gently
When opening valve stems, turn the hexagonal wrench until it hits against the stopper. Do
not try to force the valve to open further.
IMPORTANT
MANIFOLD GAUGE
Compound gauge Pressure gauge
Low pressure valve
Vaccum pump
Charge hose
High pressure valve
Low pressure valve
-76 cmHg
Pressure / charge hose
1. Connect the charge hose of the manifold
gauge to the service port on the outdoor
unit’s low pressure valve.
2. Connect another charge hose from the
manifold gauge to the vacuum pump.
3. Open the low pressure side of the manifold
gauge. Keep the high pressure side closed.
4. Turn on the vacuum pump to evacuate the
system.
5. Run the vacuum for at least 15 minutes, or
until the compound meter reads -76 cmHg
(-10
5
Pa).
6. Close the low pressure side of the manifold
gauge, and turn o󰀨 the vacuum pump.
7. Wait ve minutes, then check that there
has been no change in system pressure. If
there is a change in system pressure, refer
to gas leak checks on next page. If there
is no change, unscrew the cap from the
high pressure valve and using a hexagonal
wrench open the valve by a quarter turn
(clockwise). Listen for gas exiting the
system, then close the valve after ve
seconds.
8. Watch the pressure gauge for one minute
and make sure that there is no change in
pressure. The pressure gauge should read
slightly higher than atmospheric pressure.
9. Remove the charge hose from the service
port. Using a hexagonal wrench, fully open
both the high pressure and low pressure
valves. Tighten valve caps on all three
valves (service port, high pressure, low
pressure) by hand. You may tighten it
further using a torque wrench if needed.
Adding refrigerant
Some systems require additional charging depending on pipe lengths. The standard pipe length
varies according to local regulations. The refrigerant should be charged from the service port on
the outdoor unit’s low pressure. The additional refrigerant to be charged can be calculated using
the following formula.
Connective pipe length Air purifying method Additional refrigerant
> Std. pipe length (m) Vacuum pump
Liquid side Ø 6.35 (Ø0.25”)
(pipe length-standard length) x 12g/m
Liquid side Ø 9.52 (Ø0.375”)
(pipe length-standard length) x 24g/m

18 |
Electrical and gas leak checks
Checkpoints of indoor unit
Checkpoints of outdoor unit
A
BC
D
A: Low pressure stop valve
B: High pressure stop valve
C / D: Indoor are nuts
Conrm the unit’s electrical system is safe and operating properly. Check all are nut connections
and conrm the system is not leaking. Conrm gas and liquid (high and low pressure) valves are
fully open.
Electrical safety checks
After installation conrm that all electrical wiring is installed in accordance with the wiring diagrams
on the appliance and with local regulations.
Before test run - check grounding work
Measure grounding resistance by visual detection and with a grounding resistance tester.
Grounding resistance must be less than 0.1 Ω.
During test run- check for electrical leakage
During the test run, use a multimeter to perform a comprehensive electrical leakage test. If
electrical leakage is detected, turn o󰀨 the unit immediately and call a licensed electrician to nd
and resolve the cause of the leakage.
Gas leak checks
There are two di󰀨erent methods to check for gas:
Soap and water
Using a soft brush, apply soapy water or liquid detergent to all pipe connection points on the
indoor, and outdoor unit. The presence of bubbles indicates a leak.
Leak detector method
If using a leak detector, refer to the device’s instructions for correct usage.
After conrming that all the pipe connection points do not leak, replace the valve cover on the
outside unit.

| 19
Test run
Ambient temperature below 17 °C
When the ambient temperature is below 17 °C the COOL function won’t work. In this
instance you can use the manual control button to test the COOL function. Lift the front
panel of the indoor unit and raise it until it clicks. The manual control button is on the right
hand side of the unit. Press it two times to select the COOL function. Perform test run as
normal.
NOTE
Perform the test run for at least thirty minutes.
Connect power to the unit and press the ON/OFF button on the remote to turn it
on.
Press the MODE button to scroll through the following functions:
• COOL select the lowest temperature
• HEAT select the highest temperature
Let each function run for ve minutes and perform the following checks:
5No electrical leakage
5Unit is properly grounded
5All electrical terminals properly covered
5Indoor and outdoor units installed correctly
5All pipe connections do not leak
5Water drains properly from the drain hose
5All piping is properly insulated
5COOL function performs correctly
5HEAT function performs correctly
5Indoor unit louvres rotate properly
5Indoor unit remote operates correctly
During operation, the pressure of the refrigerant circuit will increase. This may reveal leaks
that were not present during your initial leak check. Take time during the test to double-check
that all refrigerant pipe connection points do not have leaks.
During installation and test run you may get an error code. Refer Appendix 2 on pages 22-23
for an error code summary to help diagnose the fault.
After the test run is successfully completed and all checks PASS, do the following:
• Using the remote, return the unit to a normal operating temperature
• Using insulation tape, wrap the indoor refrigerant pipe connections left uncovered
1.
2.
3.

20 |
Installation checklist
Complete the installation checklist below and make sure this is left with the homeowner.
Also instruct the homeowner about the use, care, and maintenance of the system, and
ensure they understand the safety instructions.
Check Issues if not checked
FIs the indoor unit installed securely? Dislodgement, vibration, noise
FChecked for gas leaks? No cooling or heating
FHas all thermal insulation been completed (vapour pipes,
liquid pipes, indoor portions of the drain hose extension)?
Condensation
FIs the drainage secure? Water leakage
FElectric wires installed correctly? No cooling or heating, may
cause electrical shock or re
FWiring in accordance within the specications? Operation failure, electrical re
FInlets / outlets of the indoor and outdoor unit free of any
obstructions?
No cooling or heating
FAre the stop valves open? No cooling or heating
FAre the pipes designed for use with R32? Pipe or pipe connection
leakage
FLeak test pipe connections? Pipe connection leakage
FAir purging carried out? No cooling or heating
FAppliance tested for correct operation? No cooling or heating
FEnd user aware of operating and safety procedures Incorrect operation