Johnson Controls Duct R-410A User manual

Read this manual before installation and operation
Make sure that it is well kept for later reference
Duct R-410A 50Hz
INSTALLATION MANUAL
YMGFZH096BAN-BGX

Split Duct Air Conditioner
INSTALLATION MANUAL
Thank you very much for purchasing our air conditioner,
Before using your air conditioner , please read this manual carefully and keep it for future reference.

1
Installation Manual
CAUTION
Precautions before reading the installation manual.
1. PRECAUTIONS
Read this user manual carefully before installing the equipment.
The air conditioner must be installed by professional technicians.
When installing the indoor unit and its accessory pipes, adhere to
this user’s manual as far as possible.
Inspect and make sure the piping and cabling are correct before
powering on the air conditioner.
This information may change with the update of this machine, and
no further notice will be given for such change.
WARNING
WARNING
The safety precautions listed here are divided into two categories. In
either case, important safety information is listed which must be read
carefully.
After completing the installation, make sure that the unit operates
properly during the start-up operation. Please instruct the customer
onhowtooperatetheunitandkeepitmaintained.Also,inform
customers that they should store this installation manual along with
the owner's manual for future reference.
Do not throw or slam the remote controller.
Operate the remote controller within the receiving scope of the
indoor unit, and direct the transmitting part of the remote control-
ler to the receiver of the indoor unit.
The remote controller should be over 1m away from the
television or sound box.
Do not place the remote controller at a moist place, near the
heat sources such as stove, or expose it directly in the sunlight.
Ensure correct positive and negative poles when loading the
batteries.
Decide the correct way of conveying the equipment.
Try to transport this equipment with the original package.
If the a ir conditioner needs to be installed on a metal part of the
building, electric insulation must be performed, and the installa-
tion must meet the relevant technical standards of electric
devices.
The appliance must be installed 2.3m above floor.
The appliance shall not be installed in the laundry.
Before obtaining access to terminals, all supply circuits
must be disconnected.
The appliance must be positioned so that the plug is
accessible.
The enclosure of the appliance shall be marked by word, or
by symbols, with the direction of the fluid flow.
If the supply cord is damaged, it must be replaced by the
manufacture or its service agent or a similarly qualified
person in order to avoid a hazard.
An all-pole disconnection switch having a contact
separation of at least 3mm in all poles should be
connected in fixed wiring.
Failure to observe a warning may result in death.
CAUTION
Failure to observe a caution may result in injury or damage
to the equipment.
Install the unit where enough space of installation and mainte-
nance is available.
Install the unit where the ceiling is horizontal and enough for
bearing the weight of the indoor unit.
Install the unit where the air inlet and outlet are not baffled and
are the least affected by external air.
Install the unit where the supply air flow can be sent to all parts
in the room.
Install the unit where it is easy to lead out the connective pipe
and the drain pipe.
Install the unit where no heat is emitted from a heat source
directly.
CONTENTS PAGE
PRECAUTIONS.......................................................................................1
ACCESSORIES (INDOOR UNIT).............................................................. 2
INSTALLATING INDOOR UNIT ................................................................2
INSTALLATING OUTDOOR UNIT...............................................................4
HEAT INSULATION OF THE PIPE .............................................................8
INSTALL THE CONNECTIVE PIPE.............................................................8
INSTALL THE DRAIN PIPE......................................................................11
ELECTRIC CONNECTION........................................................................11
ELECTRIC WIRE DIAGRAM....................................................................13
METHODS OF CONFIGURING AND SELECTING INSTALLATION...............14
CONSTRUCTION AND VENTILATION PIPELINE DESIGN SCHEME............15
TRIAL RUN............................................................................................16

2. ACCESSORIES (INDOOR UNIT)
3. INSTALLATING INDOOR UNIT
Installing the equipment in any of the following places may lead
to faults of the equipment (if that is inevitable, consult the
supplier):
The site contains mineral oils such as cutting lubricant.
Seaside where the air contains much salt.
Hotpring area where corrosive gases exist, e.g., sulfide gas.
Factories where the supply voltage fluctuates seriously.
Inside a car or cabin.
Place like kitchen where oil permeates.
Place where strong electromagnetic waves exist.
Place where flammable ga ses or materials exist.
Place where acid or alkali gases evaporate.
Other special environments.
Install the unit where enough space of installation and mainte-
nance is available.
Install the unit where the air inlet and air outlet are free from
obstacles and strong wind.
Install the unit in a dry and well ventilated place.
Install the unit where the bearing surface is level and can bear
weight of the unit, and is suitable for installing the unit horizon-
tally without increasing noise or vibration.
Install the unit where the operation noise and the expelling of air
do not affect neighbours.
Install the unit where no flammable gas is leaked.
Install the unit where it is convenient for pipe connection and
electric connection.
NOTE
If in the wire control mode, the accessories do not include
display panel assembly remote controller or mounting bracket.
1
1
1
1
1
2
1
2
Accessory name Qty. Purpose
Owner’s manual
Shape
Installation manual
Restriction assembly
D isplay board subassembly
Protective sleeve for refrigerant
inlet and outlet pipes
Remove controller
AAA battery
Water connective pipe
This manual
Connect to system
Connect to water drainage pipe
Connect to control signal
Table.2-1
2
Installation Manual
Inspection orifice
Note: Ensure that the minimum
drain gradient is over 
Fig.3-1
Fig.3-2
Maintenance space
Inspection orifice
600mmX600mm
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3.1 Installation Space
Ensure enough space required for installation and maintenance.
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Pendant bolt hole
Air inlet side
Fig.3-3
96.%WX (Unit:mm)
  
 

4-12×72

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carbon steel (whose surface is zinc plated or undergoes other
rustproof treatment) or stainless steel.
The treatment of the ceiling varies between buildings. For
detailed measures, consult with the fitting-out staff.
Fix the pendant bolts firmly and reliably in light of the specific
situation.
Installation of the pendant bolt in different environments.
A. Wooden structure
Put rectanglar sticks across the beams, and set pendant bolts.
B. New concrete roughcast
Use embedded bolts, embedded pulling plugs, and embedded
stick harness.
D. Steel beam and girder structure
Set and use supportive angle steel.
Use a hoisting device to hoist the indoor unit, align it with the
installation screw, adjust the horizontality and then tighten it.
C. New concrete roughcast
Set it with embedded bushes or embedded bolts.
Suspended bolt
Pendant bolt Supportive
angle steel
3.3 Suspending The Indoor Unit

Unit body Pendant bolt
1RWOHVVWKDQ
Wooden span
Pendant bolt
Beam
Ceiling
Fig.3-5
Fig.3-6
Fig.3-7
Steel bar
Embedded bolt
Pipe pendant embedded bolt
Blade plug-in unit Slide plug-in unit
Fig.3-8
Fig.3-9
Fig.3-10
3
Installation Manual
The duct design must comply with the national heating air
conditioner pipeline design specifications.
The duct accessories and materials must be produced by
professional manufacturers.
In order to prevent air flow shorting, do not keep the air inlet pipe
near the air outlet pipe.
Install a filter at an easy-to-maintain place such as intake pipe.
(Otherwise, the duct will gather on the air heat exchanger and
lead to fault and water leak of the air conditioner.)
In order to suppress noise effectively, install noise suppression
and sound insulation devices, especially in the noise-sensitive
spaces such as meeting rooms.
3.4 Design And Connection Of Duct
Inspection
orifice
Canvas adapter Canvas adapter
Noise suppression chamber
Noise
suppression chamber
Air outlet Air inlet
Air filter
Key points of duct connection
For connection of the flange plane, use non-flammable canvas
adapter to prevent transmission of vibration. For its size, see the
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site) for connection.
All pipelines must be connected closely and soundly without
leak of air. The pipelines must be adiabatic and free from
condensation.

MHB-96H(C)RN1
Fig.3-15
Fig.3-16
Air outlet duct connection screw hole location diagram
Return air duct rivet screw hole location diagram
343
450
362.5
25
1350
362.5
250
40
1225
390
1350
390
16
5
2
36
300 300
450
25
300
45
(Unit:mm)
(Unit:mm)
CAUTION
1. Install the indoor unit drainpipe
Install a drain stream trap in the drainpipe to prevent water from
overflowing. (The drainpipeabsorbs the odor. When the outside
static pressure is high (especially the air inlet),it is difficult todrain the
water.)
Drainage should be natural. When constructing, the outside pipe of
RXWGRRUXQLWVKRXOGEHLQFOLQHGa
The bending part of drainpipe should be fewer than 2. Furthermore,
to reduce the depositing dust, avoid bending the pipe as possible as
you can.
Make sure there is no dust or rubbish falling into indoor unit drain
elbow and drainpipe.
After installation, remove the checking panel, pour some water in the
drain elbow to see whether it drains smoothly.
Checking panel
Sheath
(Checking orifice)
5mmor more
Checking panel Drain pipe
General drain pipe
(Checking orifice)
Sheath
PPRUPRUH

Fig.3-11
3.5 Install the drainpipe
Rubbish is easy to accumulate at drain stream trap. Make
sure to install a plug or other things which is easy to clean.
2. Test draining
Open the clapboard of indoor unit, pour the water in to see whether it
drain smoothly and whether there is water leakage.
3. Heat insulation
After confirming that drainage is smoothly and there is no leakage,
wrap the drainpipe with insulation material, or there will be
condensed water.
4
Installation Manual
3.6 Dimension˄Unit:mm˅
4. INSTALLATING OUTDOOR UNIT
Installation
Check the model and name to avoid mistaken installation.
4.1 Important: Construction Checkpoints

5
Installation Manual
Refrigerant pipe
The refrigerant pipes must have the specified diameter.
Nitrogen of a certain pressure must be filled into the refrigerant
pipe before welding.
The refrigerant pipe must undergo heat insulation treatment.
After the refrigerant pipe is installed completely, the indoor unit
cannot be powered on before performing the airtight test and
creating a vacuum.
Refrigerant pipe
The refrigerant pipe must undergo the airtight test [with
03DNJIFP2G) nitrogen].
Creating a vacuum
Be sure to use the vacuum pump to create a vacuum of the
connective pipe at both air side and liquid side concurrently.
Refrigerant replenishment
If the pipe is longer than the reference pipe, the refrigerant
replenishment quantity for each outdoor unit should be
calculated through the formula obtained according to the actual
length of the pipe.
Record the refrigerant replenishment quantity, actual length of
pipe and the height difference of the indoor & outdoor units onto
the operation confirmation table (on the electric control box) of
the outdoor unit in advance for future reference.
Fig.4-3
Fig.4-4
4.3 Convey Outdoor Unit
4.4 Installing The Outdoor Unit
Steel wire
Guard board
PP PP
M12 foundation bolt
4 screws for 1 unit
Use 4 steel ropes of a f6mm or bigger size to hoist the outdoor
unit and convey it into the room.
In order to prevent scratch and deformity the outdoor unit, apply
a guard board to the surface of contact between the steel wire
and the air conditioner.
Remove the cushion for use in the transport after finishing the
transport.
As shown in Fig.4-4OHDYHDQLQWHUYDORIPPEHWZHHQWKH
outdoor units.
The distance of the foundation bolt is shown in Fig.4-5.
NOTE
In case any obstacles exist above the outdoor unit, such
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If miscellaneous articles are piled around the outdoor unit, such
DUWLFOHVPXVWEHPPEHORZWKHWRSRIWKHRXWGRRUXQLW
Fig.4-1
Fig.4-2
When installing the unit, leave a space for maintenance shown
in the following figure. Install the power supply at the side of the
outdoor unit. For installation procedure, see the relevant
installation manual.
Ensure enough space for installation and maintenance.(see
Fig.4-1 and Fig.4-2)
4.2 Installation Space
Installation & maintenance surface
Air outlet
Air inlet
Air outlet
Top view of the outdoor unit (multiple units installed)
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PP
PP
PP
PP
Electric wiring
Select the power supply capacity and wire size according to the
design manual. The power wire size of the air conditioner should
be greater than that of ordinary motors.
In order to prevent misoperation of the air conditioner, do not
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with the connection wires (low-voltage wires) of the
indoor/outdoor unit.
Power on the indoor unit after performing the airtight test and
making a vacuum.
Trial run
Perform the trial run only after the outdoor unit has been
powered on for over 12 hours.

6
Installation Manual
Fig.4-5
757
671
10HP
7KURXJKKROHîUHFWDQJXODUKROH
(Unit:mm) When welding the refrigerant pipe, in order to prevent internal
oxidation of the pipe, nitrogen must be filled in. Otherwise, the
oxidized chips may block refrigerating circulatory system.
NOTE
When welding the refrigerant pipe, in order to prevent internal
oxidation of the pipe, nitrogen must be filled in. Otherwise, the
oxidized chips may block refrigerating circulatory system.
NOTE
Fig.4-8
Fig.4-9
Indoor unit
Size of outdoor unit pipes and piping methods
Model Gas side Liquid side
9.+3
I 
I 9.52
Allowed length of refrigerant pipe and height difference
Outdoor unit
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Height difference between indoor
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30m
50m
30m
Max. actual length of pipe (L)
Allowed
value
Height difference
between indoor
unit and outdoor
unit (H)
Outdoor
(upper)
Outdoor
(lower)
Max. height difference
Indoor unit
Table.4-1
Table.4-2
.&RROLQJ
4.6 Size Of Outdoor Unit Pipes And Piping
Methods
Fig.4-6
Fig.4-7
steel
Snow protection
shed at the air inlet
Snow protection
shed at the air inlet
Snow protection
shed at the air outlet
Snow protection facilities must be installed in the snowfall areas.
(See the right figure) (in case the snow protection facilities are
incomplete, faults may occur). In order to prevent influence
caused by snow, set up raised pavilion, and install snow protec-
tion sheds at the air inlet and air outlet.
The refrigerant pipe adapter is located inside the outdoor unit.
So remove the right front board first.(three M5 screw)
When the pipe is connected from the front side, the pipe can be
led out through the right front board.
As shown in Fig.4-7, when brazing the indoor and outdoor
connective lines, pad a sheet metal under the valve avoids the
flame burning the chassis.
4.5 Refrigerant Pipe

7
Installation Manual
After the pipes between the indoor unit and the outdoor unit are
connected, replenish compressed nitrogen to perform airtight
test.
The airtight test is performed by using the compressed nitrogen
>03DNJFP2G)].
Tighten the spool of the gas valve and liquid valve before
compressing the nitrogen.
Compress the nitrogen at the air vent of the gas valve.
The gas valve and liquid valve are closed in the process of
compressing the nitrogen.
Do not use oxygen, flammable gas or toxic gas in the airtight
test.
Use a vacuum pump to make a vacuum. Do not use refrigerant
gas to expel air.
When making the vacuum, start from the air side.
According to the diameter and length of the connective liquid-
side pipe of the outdoor unit and indoor unit, calculate the
refrigerant replenishment quantity. The refrigerant for replenish-
PHQWLV5$
Trash and foreign matters may come into the pipe in the process
of installing the refrigerant pipe. Be sure to blow them off with
nitrogen before connecting the pipe to the outdoor units.
Use high-pressure nitrogen to clean the pipelines. Do not use
the refrigerant of the outdoor unit for cleaning.
NOTE
Table.4-3
9.52
I
Diameter of liquid-side pipe
0.060kg
Quantity of refrigerant
replenished for 1 m pipe length
Fig.4-10
Signal wire
Gas-side connective pipe of system
Liquid-side connective pipe of system
4.7 Airtight Test
4.8 Use A Vacuum Pump To Create A Vacuum
4.9 Open All Valves
Refrigerant Replenishment Quantity
4.11 Remove Trash And Moist In The Pipe
4.12 Schematic Diagram Of Connection
Between Indoor Unit And Outdoor Unit
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refrigerant which is harmless and non-flammable. The room for
placing the air conditioner should have a proper space. Even if
refrigerant leakage occurs, the density threshold will not be
crossed. Additional measures may also be taken.
Density threshold: Density of the Freon gas that does not harm
WKHKXPDQERG\'HQVLW\WKUHVKROGRI5$>NJP3]
Calculate the total quantity of refrigerant to be replenished (A
>NJ@7RWDOUHIULJHUDQWTXDQWLW\IRU+3 UHIULJHUDQWUHSOHQLVK-
ment quantity upon shipment (11[kg]) + additional refrigerant
replenishment corresponding to the pipe length
Calculate out the indoor volume (B[m3]) (according to the
minimum volume)
Calculate out the refrigerant density:
Measures against crossing of the refrigerant density threshold
In order to keep the refrigerant density below the threshold
value, please install a mechanic ventilation device. (perform
ventilation often)
In case frequent ventilation is impossible, please install the
leakage detection alarm device linked with the mechanical
ventilation device.
Fig.4-12
A[kg]
B[m ]
3 'HQVLW\WKUHVKROG>NJP@
3

Outdoor unit
Room in which refrigerant is leaked
(All refrigerant is leaked)
4.13 Refrigerant Leak Precautions
Fig.4-11
Signal wire
Gas-side connective pipe of system
Liquid-side connective pipe of system

Check the height difference between the indoor unit and the
outdoor unit, and check the length and number of bends of the
refrigerant pipeline, which must meet the following require-
ments:
0D[KHLJKWGLIIHUHQFHP,IWKHKHLJKWGLIIHUHQFHLVJUHDWHU
than 5m, it is best to put the outdoor unit above the indoor unit)
0D[SLSHOLQHOHQJWKP
Max. number of bends....15
In the process of installing the connective pipe, do not letmmmm
the air, dust or foreign substance intrude into the pipeline
system.
Install the connective pipe only after fixing the indoor and
outdoor units.
Keep dry when installing the connective pipe. Do not let moist
intrude into the pipeline system.
6. INSTALL THE CONNECTIVE PIPE
6.1 Preparation Before Installtion
8
Installation Manual
NOTE
The indoor unit and outdoor unit are categorized into system A
and system B. When installing and connecting the indoor unit
and outdoor unit, identify the label carefully, and make sure that
indoor unit corresponds to the outdoor unit exactly. Otherwise, it
may lead to fault of the air conditioner.
Model of indoor unit.Room name
Example: The first system indoor unit (A) of the 2nd floor is
recorded as: 2F 1A
In order to prevent faults caused by condensate of the refriger-
ant pipe and drain pipe, perform condensate prevention and
heat insulation properly.
Be sure to entwine heat insulation materials round the drain pipe
which runs through the room.
Carry through heat insulation for the drain pipes thoroughly.
Please use heat-resistant materials as heat insulation materials
of the air-side pipe. (e.g., EPT)
Cover heat insulation materials separately at the liquid side and
the air side. Moreover, perform heat insulation thoroughly for the
air-side pipes of the indoor unit, and prevent water from dripping
outside the unit.
After applying the auxiliary heat insulation materials, use
vinylresin tape to seal it lest water leak.
If it is forecast that high humidity/temperature environment
(condensate temperature is over 23ć) may exist in the ceiling,
e.g., inside the ceiling with slab, ceiling which is in the same
HQYLURQPHQWDVWKHRXWGRRUDLULWLVQHFHVVDU\WRDSSO\PP
RUWKLFNHU DGLDEDWLF ZRRO aNJP2) to the refrigerant pipe
and the drain pipe in addition to applying the general heat insula-
tion materials. Enough heat insulation materials should also be
applied to the refrigerant joint and the pipe joint.
NOTE
CAUTION
Fig.5-1
5. HEAT INSULATION OF THE PIPE
5.1 Heat Insulation Of The Pipe
5.2 Heat Insulation Of The Drain Pipe
5.3 Heat Insulation Of The Refrigerant Pipe
Indoor unit
(air-side pipe)
In case multiple systems are set, in order to identify the connec-
tion system of the indoor unit and outdoor unit, it is necessary to
give name to each system, and mark it onto the nameplate on
the electric control box cover of the outdoor unit.
Fig.4-13
OA
b. Leakage detection alarm device linked
with the mechanical ventilation device
(The leakage detection alarm device should be installed at the place
vulnerable to retention of the refrigerant)
D9HQWLODWLRQRULILFHSDUW
Indoor unit
4.14 Completing The Connection System Name
All outdoor unit and evaporator coil connections are
copper-to-copper and should be brazed with a
phosphorous-copper alloy material such as Silfos-5 or
equivalent. DO NOT use soft solder. The outdoor units
have reusable service valves on both the liquid and
vapor connections. The total system refrigerant charge
is retained within the outdoor unit during shipping and
installation. The reusable service valves are provided to
evacuate and charge per this instruction.
Serious service problems can be avoided by taking
adequate precautions to assure an internally clean and
dry system.
6.2 PRECAUTIONS DURING BRAZING OF LINES

Fig.6-1
9
Installation Manual
Precautions should be taken to prevent heat damage to service valve
by wrapping a wet rag around it as shown in Fig. 6.
Also, protect all painted surfaces, insulation, during brazing. After
brazlng cool joint with wet rag.
6.3 PRECAUTIONS DURING BRAZING SERVICE VALVE
9DOYHFDQEHRSHQHGE\UHPRYLQJWKHSOXQJHUFDSDQGIXOO\LQVHUWLQJ
a hex wrench into the stem and backing out counter-clockwise until
valve stem just touches the chamfered retaining wall.
1. Remove the cap and Schrader core from both the liquid
and vapor service valve service ports at the outdoor
unit. Connect Iow pressure nitrogen to the liquid line
service port.
Connect the refrigerant lines using the following procedure:
CAUTION
Dry nitrogen should always be supplied through the tubing while it
is being brazed, because the temperature required is high enough
to cause oxidation of the copper unless an inert atmosphere is
provide. The flow of dry nitrogen should continue until the joint has
cooled. Always use a pressure regulator and safety valve to insure
that only low pressure dry nitrogen is introduced into the
tubing.Only a small flow is necessary to displace air and prevent
oxidation.
2. Braze the liquid line to the liquid valve at the outdoor unit. Be sure to
wrap the valve body with a wet rag. Allow the nitrogen to continue
flowing. Refer to the Tabular Data Sheet for proper liquid line sizing.
3.
Carefully remove the rubber plugs from the evaporator liquid and vapor
connections at the indoor coil.
4.
Braze the liquid line to the evaporator liquid connection. Nitrogen
should be flowing through the evaporator coil.
5. Slide the plastie cap away from the vapor connection at the indoor coil.
Braze the vapor line to the evaporator vapor connection. Refer to the
Table 1 for proper vapor line sizing.
6.
Protect the vapor valve with a wet rag and braze the vapor line connection
to the outdoor unit. The nitrogen flow should be exiting the system from
the vapor service port connection. After this connection has cooled,
remove the nitrogen source from the liquid fitting service port.
7. Replace the Schrader core in the liquid and vapor valves.
8.
Leak test all refrigerant piping connections including the service port
IODUH FDSV WR EH VXUH WKH\ DUH OHDN WLJKW '2 127 29(57,*+7(1
EHWZHHQDQGLQFKOEVPD[LPXP
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or less.
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vertical differential.
2. Do not increase or decrease tubing sizes.
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nitrogen and leak tested with a bubble type leak detector. Than
release the nitrogen charge. Do not use the system refrigerant in
the outdoor unit to purge or leak test.
 5HSODFHFDSRQVHUYLFHSRUWV'RQRWUHPRYHWKHIODUHFDSVIURP
the service ports except when necessary for servicing the system.
11. Release the refrigerant charge into the system. Open both the
liquid
and vapor valves by removing the plunger cap and with an hex
wrench back out counter-clockwise until valve stem just touches the
chamfered retaining wall.
12. Replace plunger cap finger tight, then tighten an additional 1/12
turn (1/2 hex flat). Cap must be replaced to prevent leaks.
CAUTION
Do not connect manifold gauges unless trouble is suspected.
Approximately 3/4 ounce of refrigerant will be lost each time a
standard manifold gauge is connected.
WARNING
Never attempt to repair any brazed connections while the system is
under pressure. Personal injury could result.
See "System Charge" section for checking and recording system
charge.
NOTE
NOTE

10
Installation Manual
Use refrigerant tank to expel air (see Fig.6-2 and Fig.6-3 )
Screw up the pipe nuts at A, B, C and D completely.
Loosen and remove the square-head cover and the mainte-
nance orifice nut of valves A and B.
Connect the filler hose of the refrigerant tank with the mainte-
nance orifice of valve A.
Loosen the valve of the refrigerant tank, continue filling refriger-
ant for 6 seconds to expel the air, and tighten the nut of valve B
quickly.
Loosen the valve of the refrigerant tank again, and fill the
refrigerant for 6 seconds. Detect leak for all adapters at A, B, C
and D. After making sure that no leak exists, screw off the filler
hose. After all the filled refrigerant is expelled, screw up the
maintenance orifice nut of valve A quickly.
Open the square-head spools of valves A and B completely.
Tighten the square-head cover of valves A and B.
Use a vacuum pump to expel the air (Fig.6-4 ): (For method of
using the manifold valve, see the operation manual of manifold
valve)
Loosen and remove the maintenance orifice nut of valve A, and
connect the filler hose of the manifold valve to the maintenance
orifice of valve A (tighten both valveA and valve B).
Connect the filler hose adapter to the vacuum pump.
Open the low pressure (Lo) handle of the manifold valve
completely.
Start the vacuum pump to extract air. At the beginning of
extracting air, slightly loosen the maintenance orifice nut of valve
B, check whether any air enters it (the vacuum pump noise
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tighten this maintenance orifice nut.
Upon completion of vacuuming, tighten the low pressure (Lo)
handle of the manifold valve completely and stop the vacuum
pump. Keep extracting air for over 15 minutes. Check whether
WKHPXOWLPHWHUSRLQWVDW;3DFP+J
Loosen and remove the square-head cover of valves A and B.
After opening valves A and B completely, tighten the square-
head cover of valves A and B.
Remove the filler hose off the maintenance orifice of valveA, and
then tighten the nut.
Fig.6-4
Manifold valve
-76cmHg
Filler hose Filler hose
9acuum pump
Hi-handle
Lo pressure valve
Multimeter manometer
Lo-handle
From the following table, select a method of expelling air.
If the air conditioner is relocated, be sure to use a vacuum pump
or refrigerant tank to expel air.
Use the refrigerant in the outdoor unit to expel air(see Fig.6-
2and Fig.6-3)
Screw up the pipe nuts at A, B, C and D completely.
Loosen and remove the square-head cover of valves A and B,
rotate the square-head spool of valve B counterclockwise for 45
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spool of valve B tightly.
Detect leak for all adapters at A, B, C and D. After making sure
that no leak exists, open the maintenance orifice nut of valve A.
After all air is expelled, tighten the maintenance orifice nut of
valve A.
Open the spools of valves A and B completely.
Tighten the square-head cover of valves A and B completely.
6.4 Expelling Air
Fig.6-2
Fig.6-3
Length of connective pipe
(single pass) Procedure of expelling air
Less than 5m
aP
Use refrigerant in the outdoor unit
Use vacuum pump or refrigerant
tank.
A
B
C
D
Outdoor unit Intdoor unit
Stop valve
Air side
Liquid side pipe adapter
Table.6-2

Drain pipe trash gains easily at the drainage controller. Be sure
to install a stopper and a structure that cleans up trash easily.
Trial draining of the drain pipe
Open the side panel of the indoor unit, fill water inward, and
check whether the water can be drained smoothly. Check water
leak at the joint.
Heat insulation of drain pipe
After making sure that the water drains smoothly and no water is
leaked, use adiabatic wool bushes to preserve heat of the drain
pipe. Otherwise, condensate will occur.
NOTE
8. ELECTRIC CONNECTION
Use special power supply for the air conditioner. Design power
supplies specific to the indoor unit and outdoor unit. The supply
voltage must comply with the nominal voltage.
The external supply circuit of the air conditioner must have a
ground wire, and the power supply ground wire of the indoor unit
must be connected with the external ground wire firmly.
The wiring must be performed by professional technicians
according to the circuit diagram labels.
Distribute the wires according to the relevant electric technical
standards promulgated by the State, and set the Residual
Current-operated Circuit Breaker (RCCB) properly.
The power wire and the signal wire shall be laid out neatly and
properly, without mutual interference or contacting the connec-
tion pipe or valve.
No power cable is attached to this equipment. The user can
select the power cable by reference to the stipulated power
supply specifications. No joint of wires is allowed.
Upon completion of wire connection, double check it and then
connect the power supply.
An all-pole disconnection device which has at least 3mm
separation distance in all pole and a residual current
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in the fixed wiring according to the national rule.
The appliance shall be installed in accordance with national
wiring regulations.
CAUTION
Fig.7-1
Inspection panel
Main drain pipe
Drain pipe Inspection panel
over 1mm
over 5mm
Bush
(inspection and sweeporifice) Bush
(inspection and sweeporifice)
Procedure of using stop valve
Open the spool until it touches the stop block. Do not attempt to
open further.
Use a spanner or a similar tool to tighten the bonnet. The bonnet
tightening torque is shown in aboveTable “Tightening torque”.
Upon completion of installation, open all valves before trial run.
Each unit has two valves of different sizes located at the outdoor
unit side. Of the two valves, one is gas valve and the other is
liquid valve. The procedure of opening/closing the valve is
shown in the right figure (Fig.6-5).
Procedure of opening the valve: Open the square-head cover,
use a spanner to capture the square head and open it
thoroughly. Then tighten the square-head cover.
Procedure of closing the valve: Same as the procedure of
opening the valve, but rotate the spanner clockwise thoroughly.
Use soap water or a leak detector to check whether gas leakage
exists at the adapters.
Use heat insulation materials to wrap the part protruding outside
the flared pipe joint and the refrigerant pipe of the liquid pipe and
the gas pipe, and ensure that no gap exists between them.
Imperfect heat insulation may lead to condensate drips.
Install the drain pipe of the indoor unit
In order to prevent drain overflow, install a drainage controller at
place 1 of the drain pipe. (The drainage controller is designed to
smoothen the drainage when the static pressure outside the unit
is high, especially at the air inlet, in addition to remove stink
through the drain pipe.)
The drain of water is natural. In the construction, the external
pipe of the outdoor unit slants downward at a gradient of
a
The number of bends and folds of the drain pipe should not
exceed 2. Try to avoid bends in order to prevent trash accumula-
tion.
In the construction, do not drop trash into the drip tray or drain
pipe of the indoor unit.
Upon completion of installing the drain pipe, remove the inspec-
tion panel. Put water into the drip tray to check whether the water
can be drained levelly and steadily.
7. INSTALL THE DRAIN PIPE
6.5 Leak Detection
6.6 Heat Insulation
Fig.6-5
9DOYHERG\
Maintenance orifice
System port
Connective pipe port
11
Installation Manual

12
Installation Manual
Specifications of power supply
Power wires
The power wires are as follows: (schematic diagram)
Table.8-1
Fig.8-1
Indoor unit
Control wire between
indoor unit and outdoor
unit
RCCB Manual switch
Indoor unit power supply
Outdoor unit power supply
RCCB Manual switch
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91a+]
Outdoor unit
Fig.8-3
Fig.8-2
NOTE
Please identify outdoor main unit and auxilary unit. Only main
unit connects with signal wire of indoor unit. Users should adjust
the dial on electric control board of outdoor unit as follows,
otherwise incorrect adjustment may cause malfunction.
NOTE
COM wire can be arranged with the connection pipe . Please
take some protection measure to prevent the wire from aging.
Signal wire of indoor unit connects to outdoor main unit only and
the control command to outdoor auxil unit is sent by COM wire
connectingwithmainunit.MakesuretoconnectCOMwire
correctly, otherwise COM error may occur and auxil unit can not
start. See following chart for connection:
unit (main) unit (auxil)
PQE PQE
main unit auxil unit
(COMwire terminal)
(COMwire terminal)
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[Optional]
6HWWKHPDLQDQGDX[LOXQLWV07$&5
com connection between main and auxil units
Indoor unit Outdoor unit
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2299a 5Hz
9a91a+]
Model
Type
Power
Switch capacity of the main
power suppliy/fuse(A)
Indoor unit power cable(mm2)
includes grounded wire
Outdoor unit power cable(mm2)
includes grounded wire
connective wire of
indoor outside unit
Wire controls
connective wire
 
599
3×2.5 mm
2
<&:
îPP
2
599îPP
2
(HEAT & COOL)
5993
îPP
2
Hi. static pressure
.%WX2XWGRRU
599îPP
2
(COOL ONLY)

Pay attention to the phase sequence of the power supply. If the phase sequence is reversed, the compressor will not start.
Meanwhile, the fault indicator of the outdoor electric control board will light up. For details, see Outdoor unit wring diagram on the
cover plate of the electric control box .
After shifting the phase sequence, power on the unit until the fault indicator goes out and the compressor starts up normally.
NOTE
9. ELECTRIC WIRE DIAGRAM
MHB-96H(C)RN1
Fig.9-1
A B C N
2
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5X6mm
2
RVV-300/500 4X1.0mm
2
RVVP-300/500 5X0.5mm
N 1 2 3 4
L
$ % & ' (
This wire diagram is applicable to both cooling and heating model .
Outdoor unit
Indoor Unit
Power supply:
91a+]
Power supply:
9a+]
3-cord cable
5-cord cable
5-cord cable
4-cord cable
Wire controller
Fixed-rate wire
controller (option)
Power supply wire
Signal wire
1 2 3 4
13
Installation Manual
Fig.9-2
This wire diagram is applicable to cooling only model.
A B C N
2
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5X6mm
2
RVV-300/500 2X1.0mm
2
RVVP-300/500 5X0.5mm
N 1 2 3 4
L
$ % & ' (
Outdoor unit
Indoor Unit
Power supply:
91a+]
Power supply:
9a+]
3-cord cable
5-cord cable
5-cord cable
2-cord cable
Wire controller
Fixed-rate wire
controller (option)
Power supply wire
Signal wire
1 2 3 4

10. METHODS OF CONFIGURING AND SELECTING INSTALLATION
1. Install the unit at the air inlet so
that the air flows smoothly and the
noise is lower.
2. The noise value varies with the
length.
3. The hose joint should be bent lest
detachment of the pipe.
1. Install the unitat a diffuserso
that the air flowssmoothly and the
noise is lower.
2. Select 1BY2 or1BY3 according
to the quantity ofthe diffusers.
3. The diffuserpipes should
preferably have the samelength
after branching, and theminimum
length of the ventilationpipes is 5m.
1. Fixed model thatdiffuses air at
a  angle.
2. The outlinesize should increase
when the air volumeis over
&0+ (for above ,i.e.,
when about 9 diffusers are
required, the outline sizeshould
increase.
3. The diffuserpipes should
preferably have the samelength
after branching, and theminimum
length of the ventilationpipes is 5m.
Material name Material name
1
2
3
4
5
6
7
9
12
8
10
11
1. Fixed model that diffuses air ata
36 angle.
2. The outline size should increase
when the air volume is over
35CMH. (for above 33), i.e., When
about 9 diffusers are required, the
outline size should increase.
3. Proper air speed: For airspeed of
over 2-3.5m/s, select other diffusers
(with greater noise).
4. Install the diffuser pipe if it is
necessary to install the model of
over 3.5m/s.
5. For purpose of cooling-only model
1 The lengthwiseadjustable model
which diffuses airat a  angle.
2. With the changeof the cooling/
heating air flow,the horizontal and
vertical distance of thefan can be
adjusted (applicable to department
store and exhibition hallwhere the
decorative effect isessential).
1. Low noise comparedwith other
air outlets. Applicableto tall
buildings that require along
distance of air conditioning.
2. Select the ventilationpipe
connection calibre according tothe
distance and the airspeed.
3. Applicable tostorey height of over
5m (for design oftall storeys such
as temple, consult manfacturer).
1. The fan is the adjustable type
which can change direction of air
flow. It isused for deluxe decoration.
2. The outline size should increase
when the air volume is over
45CMH. (3 or4SOLT) When about
6 diffusers are required, theoutline
size should increase.
3. Ifthe proper air speed is 2.5 5m/s
and actual airspeed reaches over
5m/s, it is necessary tochoose other
diffusers (with higher noise values).
1. Low noise comparedwith other
air outlets. Applicableto tall
buildings that require along distance
of air conditioning.
2. Select the ventilationpipe
connection calibre according tothe
distance and the airspeed.
3. Applicable tostorey height of over
5m (for design oftall storeys such
as temple, consult manfacturer).
1. Flanges and pipelinesconnected
to the ventilation pipes.
2. When the noisepipe is connected
with the hose, theventilation pipe
tape must be applied(otherwise,
with only adhesive tape,the
adhesion will be weakeneddue to
change of temperature).
1. It is used to prevent glass wool
leak and seal the gas at the time of
connecting the flanges and
pipelines of the ventilation pipes.
2. Entwine for over 3 circles.
3. Use ventilation pipe-specific
tapes (instead of ordinary adhesive
tapes).
In order to ensure the installation
quality and durability, it is necessary
to use auxiliary materials of standard
specifications provided by
manfacturer Electr
onics and the
auxiliary products of thespecified
manufacturers.
Air inlet wooden grille
Filter
Aluminium adhesive tape
Duct wrapping tape
Air outlet wooden grille
Linear diffuser
Round
Rectangular
1. Install the unit at the air outlet so
that the air flows smoothly and the
noise is lower.
2. The noise value varies with the
length.
3. The hose joint should be bent lest
detachment of the pipe.
14
Installation Manual
Characteristics,advantages
and other contents
Characteristics,advantages
and other contents
1. Install the fillter at the main body
grille in case the storey height is low,
and at the main body of the indoor
unit in case the storey height is high.
2. It cleans conveniently at the
time of installing/uninstalling the
fillter.
3. The button structure is easy to
install and uninstall.
Hose(for absorbing noise)
Hose(for general purpose)
Air inlet noise pipe
Air outlet noise pipe
Distributor
Rectangular air outlet
1. For purpose of air inlet
2. Must adopt fire-resistant materials.
(Those materials other than specified
by manfacturer shall not be applied)
3. The heat insulation material must
be glass wool.
1. For purpose of air outlet
2. Must adopt fire-resistant materials.
(Those materials other than specified
by manfacturer shall not be applied)
3. The heat insulation material must
be glass wool.
Air outlet
Air outlet
Air outlet
Auxiliary materials

11. CONSTRUCTION AND VENTILATION PIPELINE DESIGN SCHEME
Warehouse
Corridor
Computer room
Washroom
Office
Meeting room Office
Document reference room
Lab Manager
office
Meeting
room
Document room
Hall
Kitchen
Retiring room
Examples of construction and ventilation pipeline design scheme(Flowering hidden series)
Construction and ventilation pipeline design scheme
15
Installation Manual

12. TRIAL RUN
16
Installation Manual
Please conduct in accordance with “Trial Run Tenor Nameplate”
on the electric control box.
Perform trial run only after all installations are finished.
Confirm the following issues before trial operation, and the
box for the confirmed items.
Install the remote controller holder as required by the user.
The holder must be installed in a location suitable for transmit-
ting the signals of the remote controller to the indoor unit.
Trial run
Use the remote controller or wire controller (matched) to let the
air conditioner run in the cooling mode. Inspect the following
items against the operation manual. (If any fault occurs, remove
the fault by reference to the Section headed “Faults of Air
Conditioner and Causes” in the Operation Manual.)
Perform the trial run only after the outdoor unit has been
powered on for over 12 hours.
Check that all valves are opened before trial run.
Check the electric safety before trial run.
Do not perform compulsory operation in any way.(It is very
dangerous if the protection device is not active)
Indoor unit
Check whether the switch of the remote controller or wire
controller is normal.
Check whether the functional keys of the remote controller or
wire controller are normal.
Check whether the indoor temperature conditioning is normal.
Check whether the indicators illuminate normally.
Check whether the manual operation buttons are normal.
Check whether the drain function is normal.
Check whether the connective copper pipes and the drain pipes
generate condensate due to loose wrapping.
Open the air inlet grille to check whether any penetration or leak
of water occurs, especially at the drain stopper.
Check whether any vibration or abnormal sound occurs during
the operation.
Test whether the unit works normally in the heatig mode.
Outdoor unit
Check whether any vibration or abnormal sound occurs during
the operation.
Check whether the air, noise and condensate generated by the
unit affect the neighbors.
Check whether any refrigerant is leaked.
Check whether the indoor unit and the outdoor are
installed properly.
Check whether the piping and wiring are correct.
Check whether the refrigerant pipeline system is
inspected for leakage.
Check whether the drain is smooth.
Check whether the heat insulation is perfect.
Check whether the ground cables are connected
correctly.
Check whether the pipe length and the refrigerant
amount are recorded.
Check whether the supply voltage is equal to the rated
voltage of the air conditioner.
Check whether any obstacles exist at the air
inlet/outlet of the indoor or outdoor unit.
Open the gas valve and the liquid valve.
Connect the power supply to preheat the air
CAUTION

17
Installation Manual
