GREE ELECTRIC GTH09K3FI User manual

Change for life
Air Conditioners
Installation Manual
DC Inverter U-match Series
Floor Ceiling Type Unit
Models:
Indoor Unit Outdoor Unit
GTH09K3FI GUHD09NK3FO
GTH12K3FI GUHD12NK3FO
GTH18K3FI GUHD18NK3FO
GTH24K3FI GUHD24NK3FO
GTH30K3FI GUHD30NK3FO
GTH36K3FI GUHD36NK3FO
GTH42K3FI GUHD42NK3FO
GTH48K3FI GUHD48NK3FO
GTH36K3FI GUHD36NM3FO
GTH42K3FI GUHD42NM3FO
GTH48K3FI GUHD48NM3FO
GTH60K3FI GUHD60NM3FO
Thank you for choosing our product.
For proper operation, please read and keep this manual carefully.
If you have lost the Owner’s Manual, please contact the local
agent or visit www.gree.com or sent email to [email protected] or electronic version.
GREE reserves the right to interpret this manual which will be subject to any change due
to product improvement without further notice.
GREE Electric Appliances, Inc. of Zhuhai reserves the nal right to interpret this manual.

1 Safety Precautions .......................................................................................... 1
2 Outline of the Unit and Main Parts................................................................... 2
3 Preparative for Installation............................................................................... 3
3.1 Standard Accessory Parts .......................................................................... 3
3.2 Selection of the Installation Location.......................................................... 4
3.3 Connection Pipe Requirement ................................................................... 5
3.4 Electrical Requirement ............................................................................... 6
4 Installation of the Unit...................................................................................... 8
4.1 Installation of the Indoor Unit...................................................................... 8
4.2 Installation of the Outdoor Unit................................................................. 10
4.3 Installation of the Connection Pipe........................................................... 12
4.4 Vacuum and Gas Leakage Inspection...................................................... 15
4.5 Installation of the Drain Pipe .................................................................... 17
4.6 Electrical Wiring........................................................................................ 19
5 Installation of Controllers............................................................................... 24
6 Test Running.................................................................................................. 24
6.1 Trial Operation and Testing....................................................................... 24
6.2 Working Temperature Range.................................................................... 26
7. Troubleshooting and Maintenance ............................................................... 27
7.1 Troubleshooting........................................................................................ 27
7.2 Routine Maintenance ............................................................................... 28
Contents

DC Inverter U-match Series Floor Ceiling Type Unit
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1 Safety Precautions
WARNING! This mark indicates procedures which, if improperly performed, might lead to the
death or serious injury of the user.
CAUTION! This mark indicates procedures which, if improperly performed, might possibly result
in personal harm to the user, or damage to property.
WARNING!
(1). For operating the air conditioner pleasantly, install it as outlined in this installation manual.
(2). Connect the indoor unit and outdoor unit with the room air conditioner piping and cord available from
our standard parts. This installation manual describes the correct connections using the installation
set available from our standard parts.
(3). Installation work must be performed in accordance with national wiring standards by authorized
personnel only.
(4). If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in
contact with a ame, it produces toxic gas.
(5). Do not power on until all installation work is complete.
(6). During installation, make sure that the refrigerant pipe is attached firmly before you run the
compressor.
Do not operate the compressor under the condition of refrigerant piping not attached properly with
2-way or 3-way valve open.
This may cause abnormal pressure in the refrigeration cycle that leads to breakage and even injury.
(7). During the pump-down operation, make sure that the compressor is turned off before you remove
the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2-way or 3-way valve
open.
This may cause abnormal pressure in the refrigerant cycle that leads to breakage and even injury.
(8). When installing and relocating the air conditioner, do not mix gases other than the specified
refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to an abnormally
high value and cause breakage, injury, etc.
(9). This appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the appliance by a person responsible for their safety.
(10). Children should be supervised to ensure that they do not play with the appliance.
(11). If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualied persons in order to avoid a hazard.

DC Inverter U-match Series Floor Ceiling Type Unit
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2 Outline of the Unit and Main Parts
Indoor
Outdoor
1. Guide louver
2. Air lter
3. Wired controller
4. Wireless Controller
5. Binding tape
6. Drain Pipe
7. Gas Pipe
8. Lipuid Pipe
9. Big Handle
10. Front Board
3 4
5
679 810
1 2
Air inlet
Air outlet
Fig.1
Notes:
① .
The connection pipe and duct for this unit should be prepared by the user.
② .
This unit is standard equipped with the rectangular duct.

DC Inverter U-match Series Floor Ceiling Type Unit
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3 Preparative for Installation
3.1 Standard Accessory Parts
The standard accessory parts listed below are furnished and should be used as required.
Table 1
Indoor Unit Accessories
No. Name Appearance Q'ty Usage
1 Nut with Washer 8 To x the hook on the cabinet
of the unit.
2Wireless
Controller+Battery 1+2 To control the indoor unit
3 Insulation 1 To insulate the gas pipe
4 Insulation 1 To insulate the liquid pipe
5 Installation Paperboard 2 To insulate the drain pipe
6 Fastener 4 To fasten the sponge
7 Nut 1 To connect gas pipe
8 Nut 1 To connect liquid pipe
Table 2
Outdoor Unit Accessories
No. Name Appearance Q'ty Usage
1 Drain Plug 3 To plug the unused drain hole.
2 Drainage Connecter or 1 To connect with the hard PVC
drain pipe

DC Inverter U-match Series Floor Ceiling Type Unit
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3.2 Selection of the Installation Location
WARNING!
The unit must be installed where strong enough to withstand the weight of the unit and xed securely,
otherwise the unit would topple or fall off.
CAUTION!
① .
Do not install where there is a danger of combustible gas leakage.
② .
Do not install the unit near heat source, steam, or ammable gas.
③ .
Children under 10 years old must be supervised not to operate the unit.
Decide the installation location with the customer as follows:
3.2.1 Indoor Unit
(1). Install the unit at a place where is strong enough to withstand the weight of the unit.
(2). The air inlet and outlet of the unit should never be clogged so that the airow can reach
every corner of the room.
(3). Leave service space around the unit as required in Fig.2.
◆Floor type
Unit: mm
>600
>1000
>300
>600
>1500
◆Ceiling type
Unit: mm
>300
>600
>600 >1500
>200>2300
Fig. 2
(4). Install the unit where the drain pipe can be easily installed.
(5). The space from the unit to the ceiling should be kept as much as possible so as for more
convenient service.

DC Inverter U-match Series Floor Ceiling Type Unit
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3.2.2 Outdoor Unit
WARNING!
① .
Install the unit where it will not be tilted by more than 5°.
② .
During installation, if the outdoor unit has to be exposed to strong wind, it must be xed securely.
If possible, do not install the unit where it will be exposed to direct sunlight. (If necessary, install
a blind that does not interfere with the air ow.)
(1). Install the outdoor unit in a place where it will be free from being dirty or getting wet by rain
as much as possible.
(2). Install the outdoor unit where it is convenient to connect with the indoor unit.
(3). Install the outdoor unit where the condensate water can be drained out freely during
heating operation.
(4). Do not place animals and plants in the path of the warm air.
(5). Take the air conditioner weight into account and select a place where noise and vibration
are small.
(6). Install the outdoor unit where is capable of withstanding the weight of the unit and
generates as less noise and vibration as possible.
(7). Provide the space shown in Fig.3, so that the air flow is not blocked. Also for efficient
operation, leave three of four directions of peripheral constructions open.
Units: mm
＞500
＞500 ＞500 ＞500
＞2000
＞2000
＞1000
Fig.3
3.3 Connection Pipe Requirement
CAUTION!
The maximum length of the connection pipe is listed in the table below. Do not place the units between
which the distance exceeds the maximum length of the connection pipe.

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Table 3
Size of Fitting
Pipe(Inch)
Max.
Pipe
Length
(m)
Max. Height
Difference between
Indoor Unit and
Outdoor Unit (m)
Drainage
pipe(Outer
Diameter × wall
thickness) (mm)
Liquid Gas
GTH09K3FI GUHD09NK3FO 1/4 3/8 20 15 φ17×1.75
GTH12K3FI GUHD12NK3FO 1/4 3/8 20 15 φ17×1.75
GTH18K3FI GUHD18NK3FO 1/4 1/2 20 15 φ17×1.75
GTH24K3FI GUHD24NK3FO 3/8 5/8 30 15 φ17×1.75
GTH30K3FI GUHD30NK3FO 3/8 5/8 30 15 φ17×1.75
GTH36K3FI GUHD36NK3FO 3/8 5/8 30 15 φ17×1.75
GTH42K3FI GUHD42NK3FO 3/8 5/8 50 30 φ17×1.75
GTH48K3FI GUHD48NK3FO 3/8 5/8 50 30 φ17×1.75
GTH36K3FI GUHD36NM3FO 3/8 5/8 30 15 φ17×1.75
GTH42K3FI GUHD42NM3FO 3/8 5/8 50 30 φ17×1.75
GTH48K3FI GUHD48NM3FO 3/8 5/8 50 30 φ17×1.75
GTH60K3FI GUHD60NM3FO 3/8 3/4 50 30 φ17×1.75
(1). The connecting pipe should be thermally insulated properly.
(2). The pipe wall thickness shall be 0.5-1.0mm and the pipe wall shall be able to withstand the
pressure of 6.0 MPa. The longer the connecting pipe, the lower the cooling and heating
effect performs.
(3). The pipe wall thickness shall be 0.5-1.0mm and the pipe wall shall be able to withstand the
pressure of 6.0 MPa. The longer the connecting pipe, the lower the cooling and heating
effect performs.
3.4 Electrical Requirement
Electric Wire Size and Fuse Capacity.
Table 4
Indoor Units
Power Supply Fuse Capacity Breaker Capacity Min. Power Supply Cord
V/Ph/Hz A A mm2
09K~60K 220-240V~ 50Hz 5 6 1.0
Item
Model

DC Inverter U-match Series Floor Ceiling Type Unit
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Table 5
Model Power
Supply
Capability of Air
Switch(A)
Minimum Sectional Area of Power
Cable and Earth line (mm2)
GUHD09NK3FO
220-240V
～50Hz
13 1.5
GUHD12NK3FO 13 1.5
GUHD18NK3FO 16 1.5
GUHD24NK3FO 20 2.5
GUHD30NK3FO 20 2.5
GUHD36NK3FO 25 2.5
GUHD42NK3FO 25 2.5
GUHD48NK3FO 40 6.0
GUHD36NM3FO
380-415V 3N
～50Hz
10 1.5
GUHD42NM3FO 10 1.5
GUHD48NM3FO 16 1.5
GUHD60NM3FO 16 1.5
Notes:
① .
The fuse is located on the main board.
② .
Install the disconnect device with a contact gap of at least 3mm in all poles nearby the units
(Both indoor unit and outdoor unit).The appliance must be positioned so that the plug is
accessible.
③ .
The specications of the breaker and power cable listed in the table above are determined
based on the maximum power (maximum amps) of the unit.
④ .
The specifications of the power cable listed in the table above are applied to the conduit-
guarded multi-wire copper cable (like, YJV copper cable, consisting of PE insulated wires and
a PVC cable jacket) used at 40°С and resistible to 90°С(see IEC 60364-5-52). If the working
condition changes, they should be modied according to the related national standard.
⑤ .
The specifications of the breaker listed in the table above are applied to the breaker with
the working temperature at 40°С. If the working condition changes, they should be modied
according to the related national standard.
⑥ .
Take 2 pieces of power cord of 0.75mm2as the communication lines between indoor and
outdoor unit, with their longest lengths of 50m. Please select the appropriate line length as per
the actual installation conditions. The communication lines can not be twisted together. For
the unit (≤30K), it’s recommended to use 8m long communication line.
⑦ .
Take 2 pieces of power cord of 0.75mm2as the communication lines between the wired
controller and the indoor unit, with their longest lengths of 30m. Please select the appropriate
line length as per the actual installation conditions. The communication lines can not be twisted
together. It’s recommended to use 8m long communication line.
⑧ .
The wire size of the communication line should be no less than 0.75mm2. It’s recommended to
take 0.75mm2power cords as the communication line.

DC Inverter U-match Series Floor Ceiling Type Unit
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4 Installation of the Unit
4.1 Installation of the Indoor Unit
4.1.1 Indoor unit dimension
WARNING !
① .
Install the indoor unit in a location which can withstand a load of at least five times the
weight of the main unit and which will not amplify sound or vibration.
② .
If the installation location is not strong enough, the indoor unit may fall and cause injuries.
③ .
If the job is done with the panel frame only, there is a risk that the unit will come loose.
Please take care.
Fig.4
Table 6
Model A B C D H
GTH09K3FI
1220 225 1158 280 700
GTH12K3FI
GTH18K3FI
GTH24K3FI
GTH30K3FI
1420 245 1354 280 700GTH36K3FI
GTH42K3FI
GTH48K3FI
1700 245 1634 280 700
GTH60K3FI

DC Inverter U-match Series Floor Ceiling Type Unit
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4.1.2 Preparation for Installing the Indoor Unit
(1). Open the air inlet grille and the screw cover, and remove the screws.
(2). Release the claws in the 3 places indicated.
(3). Release the center hook and remove the front panel.
(4). Release the claws in the 2 or 3 places indicated and remove the electric component cover.
4.1.3 Indoor Unit Installation
(1). Determine the location of the hanger through the paper template, and then remove the
paper template.
Paper template
Anchor bolt
Fig.5
(2). Insert the anchor bolts into the drilled holes, and drive the pins completely into the anchor
bolts with a hammer.
(3). Remove the right and left side panels.
(4). Put the hanger bolt into the clasp of the indoor unit and tighten screws on the hanger to
prevent the indoor unit from moving.
(5). Reinstall and tighten the right and left side panels.
◆Floor type
Wall
Left side panel
Right side panel
Paper template
Fig.6

DC Inverter U-match Series Floor Ceiling Type Unit
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◆Ceiling type
40
Ceiling
Suspension
bolt
Spring
washer
Nut
Nut
Hanger
Right side
panel
Left side panel
Fig.7
(6). Adjust the height of the unit to make the drain pipe slant slightly downward so that the
drainage will become much smoother.
4.1.4 Leveling
The water level test must be done after installing the indoor unit to make the unit is horizontal,
as shown below.
Horizontal tester
Fig.8
4.2 Installation of the Outdoor Unit
WARNING
① .
Install the unit where it will not be tilted by more than 5°.
② .
During installation, if the outdoor unit has to be exposed to strong wind, it must be xed securely.

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4.2.1 Outdoor unit dimension
D
A
B
C
E
Fig.9
Table 7 Unit: mm
Item
Model A B C D E
GUHD09NK3FO
848 320 540 540 286
GUHD12NK3FO
GUHD18NK3FO 955 396 700 560 360
GUHD24NK3FO
980 427 790 610 395
GUHD30NK3FO
GUHD36NK3FO
1107 440 1100 631 400
GUHD36NM3FO
GUHD42NM3FO
958 412 1349 572 376
GUHD42NK3FO
GUHD48NK3FO
GUHD48NM3FO
GUHD60NM3FO 1085 427 1365 620 395
4.2.2 Condensate Drainage of the Outdoor Unit(Only for the heat pump unit) (Fig.10)
(1). It is required to install a drain pipe for the outdoor unit to drain out the condensate water
during heating operation. (only for the heat pump unit)
(2). When installing the drain pipe, apart from the drain pipe mounting hole, all other holes
should be plugged so as to avoid water leakage.(only for the heat pump unit)
(3). Installation Method: Insert the pipe joint into the hole φ25 located at the base plate of the
unit and then connect the drain pipe to the pipe joint.

DC Inverter U-match Series Floor Ceiling Type Unit
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Bottom Drain cap
Drain pipe
mounting hole
Fig.10
4.3 Installation of the Connection Pipe
4.3.1 Flare Processing
(1). Cut the connection pipe with the pipe cutter and remove the burrs.
(2). Hold the pipe downward to prevent cuttings from entering the pipe.
(3). Remove the are nuts at the stop valve of the outdoor unit and inside the accessory bag of
the indoor unit, then insert them to the connection pipe, after that, are the connection pipe
with a aring tool.
(4). Check if the are part is spread evenly and there are no cracks (see Fig.11).
Fig.11
4.3.2 Bending Pipes
(1). The pipes are shaped by your hands. Be careful not to collapse them.
Fig.12
(2). Do not bend the pipes in an angle more than 90°.
(3). When pipes are repeatedly bent or stretched, the material
will harden, making it difcult to bend or stretch them any
more. Do not bend or stretch the pipes more than three
times.
(4). When bending the pipe, do not bend it as is. The pipe
will be collapsed. In this case, cut the heat insulating pipe with a sharp cutter as shown in
Fig.13, and bend it after exposing the pipe. After bending the pipe as you want, be sure to
put the heat insulating pipe back on the pipe, and secure it with tape.
Fig.13
Pipe
Cutter
Cutt line
Heat insulating
pipe

DC Inverter U-match Series Floor Ceiling Type Unit
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CAUTION!
① .
To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 150
mm or over.
② .
If the pipe is bent repeatedly at the same place, it will break.
4.3.3 Connecting the Pipe at the Indoor Unit Side
Detach the caps and plugs from the pipes.
CAUTION!
① .
Be sure to apply the pipe against the port on the indoor unit correctly. If the centering is improper,
the flare nut cannot be tightened smoothly. If the flare nut is forced to turn, the threads will be
damaged.
② .
Do not remove the are nut until the connection pipe is to be connected so as to prevent dust and
impurities from coming into the pipe system.
When connecting the pipe to the unit or removing it from the unit, please do use both the
spanner and the torque wrench.(Fig.14)
When connecting, smear both inside and outside of the are nut with refrigeration oil, screw it
hand tight and then tighten it with the spanner.
Refer to Table 10 to check if the wrench has been tightened properly (too tight would mangle
the nut and lead to leakage).
Examine the connection pipe to see if it leaks, then take the treatment of heat insulation, as
shown in the Fig.15.
Use the medium-sized sponge to insulate the coupler of the gas pipe.
Fig.14
Fig.15

DC Inverter U-match Series Floor Ceiling Type Unit
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Table 8 Flare nut tightening torque
Pipe Diameter Tightening Torque
1/4˝(Inch) 15-30 (N·m)
3/8˝(Inch) 35-40 (N·m)
5/8˝(Inch) 60-65 (N·m)
1/2˝(Inch) 45-50 (N·m)
3/4˝(Inch) 70-75 (N·m)
7/8˝(Inch) 80-85 (N·m)
CAUTION!
Be sure to connect the gas pipe after connecting the liquid pipe completely.
Fig.16
4.3.4 Connecting the Pipe at the Outdoor Side Unit
Tighten the are nut of the connection pipe at the outdoor unit valve
connector. The tightening method is the same as that as at the indoor
side.
4.3.5 Checking the Pipe Connections for Gas Leaking
For both indoor and outdoor unit side, check the joints for gas
leaking by the use of a gas leakage detector without fail when the pipes
are connected.
4.3.6 Heat Insulation on the Pipe Joints (Indoor Side Only)
Stick coupler heat insulation (large and small) to the place where connecting pipes.
Fig.17

DC Inverter U-match Series Floor Ceiling Type Unit
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4.3.7Liquid Pipe and Drain Pipe
Sealed
Drain
pipe
Saddle
Fig.18
Fig.19
Trap
If the outdoor unit is installed lower than
the indoor unit (See Fig.18)
(1). A drain pipe should be above ground
and the end of the pipe does not
dip into water. All pipes must be
restrained to the wall by saddles.
(2). Taping pipes must be done from
bottom to top.
(3). All pipes are bound together by tape
and restrained to wall by saddles.
If the outdoor unit is installed higher than
the indoor unit
(1). Taping should be done from lower to
the upper part.
(2). All pipes are bound and taped
together and also should be trapped
to prevent water from returning to the
room (See Fig.19)
(3). Restraint all pipes to the wall with
saddles.
4.4 Vacuum and Gas Leakage Inspection
CAUTION!
Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is
no extra refrigerant in the outdoor unit for air purging!
4.4.1 Vacuum
(1). Remove the caps of the liquid valve, gas valve and also the service port.
(2). Connect the hose at the low pressure side of the manifold valve assembly to the service
port of the unit’s gas valve, and meanwhile the gas and liquid valves should be kept closed
in case of refrigerant leak.
(3). Connect the hose used for evacuation to the vacuum pump.
(4). Open the switch at the lower pressure side of the manifold valve assembly and start the

DC Inverter U-match Series Floor Ceiling Type Unit
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vacuum pump. Meanwhile, the switch at the high pressure side of the manifold valve
assembly should be kept closed, otherwise evacuation would fail.
(5). The evacuation duration depends on the unit’s capacity, generally, 15 minutes for the
09K/12K units, 20 minutes for the 18K units, 30 minutes for the 24/30/36K units, 45
minutes for the 42/48/60 units. And verify if the pressure gauge at the low pressure side
of the manifold valve assembly reads -1.0Mp (-75cmHg), if not, it indicates there is leak
somewhere. Then, close the switch fully and then stop the vacuum pump.
(6). Wait for some time to see if the system pressure can remain unchanged, 3 minutes for the
units less than 18K, 5 minutes for the 18K~24K units, 10 minutes for the units more than
42K. During this time, the reading of the pressure gauge at the low pressure side can not
be larger than 0.005Mp (0.38cmHg).
(7). Slightly open the liquid valve and let some refrigerant go to the connection pipe to balance
the pressure inside and outside of the connection pipe, so that air will not come into the
connection pipe when removing the hose. Note that the gas and liquid valve can be opened
fully only after the manifold valve assembly is removed.
(8). Place back the caps of the liquid valve, gas valve and also the service port.
Hose with the valve pin
gauge manifold
pipe
pipe
VAC valve
Vacuum pump
Service port
Low pressure gauge
High pressure gauge
Gauge manifold kit
Fig.20
Note: For the large-sized unit, it has the service port for both the gas valve and the liquid valve.
During evacuation, it is available to connect two hoses of the manifold valve assembly to two
service ports to quicken the evacuating speed.
4.4.2 Additional Charge
ice ports to quicken the evacuating speed.
4.4.2 Additional Charge
Refrigerant suitable for a piping length of 5m is charged in the 09~42K outdoor unit at the
factory, and for 48~60K outdoor unit refrigerant is charged for a piping length of 7.5m.
When the piping of 09~42k unit is longer than 7.5m or the piping of 48~60k unit is longer than
9.5m, additional charging is necessary.
For the additional amount, see Table 9.

DC Inverter U-match Series Floor Ceiling Type Unit
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Table 9
Model
Item Standard Pipe Length Unnecessary Charge Pipe Length
Additional Refrigerant Amount
for Extra Pipe
09~18K 5m ≤ 7.5m 30 g/m
24~42K 5m ≤ 7.5m 60 g/m
48~60K 7.5m ≤ 9.5m 60 g/m
When the height difference between the indoor unit and outdoor unit is larger than 10 meters,
an oil bend should be employed for every 6 meters.
Oil bend
Oil bend
Indoor
Outdoor
6m
Fig.21
4.5 Installation of the Drain Pipe
4.5.1 Precautions When Doing the Piping Work
(1). Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so
that air may not remain trapped inside the pipe.
(2). Keep pipe size equal to or greater than that of the connecting pipe.
(3). Install the drain piping as shown and take measures against condensation. Improperly
rigged piping could lead to leaks and eventually wet furniture and belongings.
Extension drain piping
(commercially available)
Insulating tube
(commercially
available)
Indoor unit
drain hose
Insulating tape
(accessory)
Fig.22

DC Inverter U-match Series Floor Ceiling Type Unit
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(4) Connect the drain hose.(Fig.23)
Drain hose must
slope downward.
Allow no trap to
form in the piping
Do not allow end
of hose to touch
water
Fig.23
4.5.2 Installing the Drain Pipes
(1). For determining the position of the drain hose, perform the following procedures.
(2). Insert the drain pipe to the drain outlet of the unit and then tighten the clamp securely with
tape. (Fig.24)
(3). Connect the extension drain pipe to the drain pipe and then tighten the clamp with tape.
1 2
3
1
2
Drain pan
Seal
Drain hose
≤ 4mm
Fig.24 Fig.25 Fig.26
Tighten the clamp until the screw head is less than 4 mm from the hose.(Fig.25)
① -Metal clamp ② -Drain hose ③ -Grey tape
Insulate the pipe clamp and the drain hose using heat insulation sponge.(Fig.26)
① -Metal clamp ② -Insulation sponge
(4). When drain hose requires extension, obtain an extension hose commercially available.
(5). After connecting the local drain hose, tape the slits of the heat insulation tube.
(6). Connect the drain hose to the local drain pipe. Position the inter connecting wire in the
same direction as the piping.
4.5.3 Connecting the Drain Hose
(1). Connect the extension auxiliary pipe to the local piping.
(2). Prepare the local piping at the connection point for the drain pipe, as shown in the
installation drawings.
Note: Be sure to place the drain hose as shown in the diagram below, in a downward sloping
direction.