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CONTENTS  

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WARNING 

Ask an authorized dealer or qualified installation professional to 
install/maintain the air conditioner. 

Inappropriate installation may result in water leakage,electric shock 
or fire. 

Turn off the main power supply switch or breaker before  
attempting any electrical work. 

Make sure all power switches are off.Failure to do so may cause  
electric shock. 

Connect the connecting cable correctly. 

If the connecting cable is connected in a wrong way, electric parts  
may be damaged. 

When moving the air conditioner for the installation into another 
 place, be very careful not to enter any gaseous matter other 
 than the specified refrigerant into the refrigeration cycle. 

If air or any other has is mixed in refrigerant, the gas pressure in the  
refrigeration cycle becomes abnormally high and it may resultingly  
causes pipe burst and injuries on persons. 

Ensure that all Local, National and International regulations  
are satisfied. 

Do not modify this unit by removing any of the safety guards or 
by by-passing any of the safety interlock switches. 
Exposure of unit to water or other moisture before installation  
may cause a short-circuit of electrical parts. 

Do not store it in a wet basement or expose to rain or water. 

After unpacking the unit, examine it carefully if there are  
possible damage. 

Read this ”PRECAUTIONS ” carefully before Installation.  
The precautions described below include the important  
items regarding safety. Observe them without fail. 
After the installation work, perform a trial operation to check 
for any problem. 
Follow the Owner’s Manual to explain how to use and  
maintain the unit to the customer. 

Do not install in a place that might increase the vibration of the  
unit. 

Turn off the main power supply switch (or breaker) before  
maintenance the unit . 

To avoid personal injury (with sharp edges), be careful when  
handling parts. 

Ask the customer that the Installation Manual and the Owner’s 
Manual should be kept together . 

Perform installation work properly according to the Installation  
Manual. 

Inappropriate installation may result in water leakage, electric shock  
or fire. 

When the air conditioner is installed in a small room, provide  
appropriate measures to ensure that the concentration of  
refrigerant leakage occur in the room does not exceed the  
critical level. 
Install the air conditioner securely in a location where the base  
can sustain the weight adequately. 
Perform the specified installation work to guard against an  
earthquake. 

If the air conditioner is not installed appropriately, accidents may  
occur due to the falling unit. 

If refrigerant gas has leaked during the installation work,  
ventilate the room immediately. 

If the leaked refrigerant gas comes in contact with fire, noxious gas  
may generate. 

After the installation work, confirm that refrigerant gas doer not  
leak. 

CAUTION 

New Refrigerant Air Conditioner Installation  

THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT 
(R410A)WHICH DOES NOT DESTROY OZONE LAYER. 

The characteristics of  R410A refrigerant are; Hydrophilic, oxid-  
izing membrane or oil, and its pressure is approx.1.6 times high-  
er than that of refrigerant R22.Accompanied with the new refrig-  
erant, refrigerating oil has also been changed ,Therefore, during  
 installation work, be sure that water, dust, former refrigerant, or  
 refrigerating oil does not enter the refrigerating cycle.  
To prevent charging an incorrect refrigerant and refrigerating oil,   
the sizes of connecting sections of charging port of the main   
unit and installation tools are charged from those for the   
conventional refrigerant.  

Accordingly the exclusive tools are required for the new   
refrigerant (R410A):  
For connecting pipes, use new and clean piping designed for   
R410A,and please care so that water or dust does not enter.   
Moreover, do not use the existing piping because there are   
problems with pressure-resistance force and impurity in it.  

If  refeigerant gas leaks into the room and flows near a fire source,  
such as a cooking range, noxious gas might generate. 

Electrical work must be performed by a qualified electrician in  
accordance with the Installation Manual. Make sure the air  
conditioner uses an exclusive power supply.  

An insufficient power supply capacity or inappropriate installation  
may cause fire. 

Use the specified cables for wiring connect the terminals  
securely fix. To prevent external forces applied to the terminals 
from affecting the terminals.  

CAUTION 

Do not connect the Appliance from Main Power Supply. 

This unit  must be connected to the main power supply by  
means of a switch with a contact separation of at least 3 mm. 
The installation fuse must be used for the power supply line of  
this conditioner. 
If the supply cord is damaged, it must be replaced by the  
manufacturer 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. 
The appliance shall be installed in accordance with national  
wiring regulations. 

Be sure to provide grounding. 

Do not connect ground wires to gas pipes, water pipes, lightning rods  
or ground wires for telephone cables. 

Conform to the regulations of the local electric company when  
wiring the power supply. 

Inappropriate grounding may cause electric shock. 

Do not install the air conditioner in a location subject to a risk  
of exposure to a combustible gas. 

If a combustible gas leaks, and stays around the unit, a fire may occur. 

 Required tools for installation work  

1)  Philips screw driver                      

The temperature of refrigerant circuit will be high, please keep  
the interconnection cable away from the copper tube. 
The power cord type designation is H05RN-R or above/H07RN-F. 

2)  Hole core drill(65mm)  
3)  Spanner  
4)  Pipe cutter  
5)  Knife   

installation manual 

Summary of Contents for KMF-400 DN3

Page 1: ...ou very much for purchasing our air conditioner Before using your air conditioner please read this manual carefully and keep it for future reference INSTALLATION MANUAL Amazon Unitario KMF 400 DN3 KMF 450 DN3 ...

Page 2: ...refrigerant gas doer not leak CAUTION New Refrigerant Air Conditioner Installation THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT R410A WHICH DOES NOT DESTROY OZONE LAYER The characteristics of R410A refrigerant are Hydrophilic oxid izing membrane or oil and its pressure is approx 1 6 times high er than that of refrigerant R22 Accompanied with the new refrig erant refrigerating oil has also b...

Page 3: ...gth of indoor outdoor unit liquid side pipes 2 Mark refrigerant adding amount pipe diameters of pipe length actual length and height difference between indoor and outdoor unit on the usage confirm form of outdoor unit on electronic control box plate in advance in order to further use 3 2 Refrigerant pipe 1 Use the central air conditioner specified refrigerant pipe 2 Refrigerant pipe with specified...

Page 4: ...tion of the machine may be caused Fig 4 4 There is combustible gas leakage 4 2 Handling There is much oil including engine oil ingredient There is salty air surrounding near the coast 1 Do not unpacking the unit when handling Use two ropes whose lengths are more than 8m to handle the unit Keep balance of the unit when lifting stably Use a padding plate or packing materials for protection if the pa...

Page 5: ...act symmetrically Fig 4 8 Ensure the the basement supports the vertical foldings of the front and back bottom plates directly since its the actual bearing place Macadam base is unnecessary But cocrete surface should be roughed The proportions used in mixing the concrete should be cement 1 sand 2 pebble 4 including Φ10reinforced rebar Even the surface of concrete The edge of the basement should be ...

Page 6: ... d L4 L5 The first manifold D E N4 C Fig 5 2 Table 5 2 e f N5 N6 Tightening torque Pipe dimensions N m Fig 5 4 14 2 17 2 N m 144 176 kgf cm φ6 4 32 7 39 9 N m 333 407 kgf cm CAUTION φ9 5 49 5 60 3 N m 504 616 kgf cm All the manifolds used should be specialized ones designated by our company Fail to follow the requirements could lead to system error φ12 7 61 8 75 4 N m 630 770 kgf cm φ15 9 If the d...

Page 7: ...0 5m Elbow connecting instruction Main pipe diameters of connecting pipes Connecting pipe bending process Use the maximum indoor and outdoor connecting pipe diameter Cut the pipe at A insert the main pipe and weld Φ22 2 Joint dimension Cut the pipe at A flare and weld Φ25 4 Φ28 6 Table 5 6 Pipe diameters of the indoor unit joint Insert main pipe directly and weld Refrigerant Model Gas side Liquid ...

Page 8: ... maximum principle adopt Φ28 6 Φ12 7 Fig 5 5 CAUTION Suppose in the displayed piping system the total equivalent piping length of air side liquid side is longer than 90m Connecting method Table 5 10 Gas side Liquid side Flare welding Flare welding 1 Indoor unit branch pipe Outdoor unit 40kW Outdoor unit 45kW Flare welding Flare welding Inner branch pipes are a f the size selection please refers to...

Page 9: ...sure there is no any dirt or water before connecting the pipe to the outdoor units Liquid side stop valve Gas side stop valve 2 Wash the pipe with high pressure nitrogen never use refrigerant of outdoor unit 5 7 Airtight Test 1 Connect the high pressure side pipe and liquid side stop valve after connecting indoor unit pipes Nitrogen Nitrogen Liquid pipe Gas pipe Meter connector components used for...

Page 10: ... side Fig 5 9 Fig 5 11 5 10 Leakage inspection Inspect each joint to check if it leaks by using a leak detector CAUTION or suds Fig 5 12 Do not mixedly use tools used for different refriferant tools and measuring instrument that directly contact refriferant DO NOT use refriferant gas to air discharge NOTE A liquid side stop valve B gas side stop valve C and D are the joint of the indoor unit conne...

Page 11: ...refrigerant should be added in liquid quantifiedly by electronic scale 5 13 Manifold installation key points Install it in a horizonal level error angle should less than 10 It may result in damage if installing in a wrong way 6 2 Indoor unit system wiring 1 Individual power supply without power supply device See the table below Table 6 1 Fig 5 14 CAUTION Wiring diameters and continuous lengths in ...

Page 12: ...6 3 Outdoor unit main control board Fig 6 3 installation manual 11 ...

Page 13: ... Loading output terminal EXV A driving port Reserved Control port of DC fan A EXV B driving port Loading output terminal Control port of DC fan B Current inspection port of the inverter compressor A and B Loading output terminal Loading output terminal Power supply connected port of the main control panel Power output of the No 1 transformer 6 5 Dial indication sign instructions ENC3 and S12 defin...

Page 14: ...CCB and manual switch Cooling priority mode 3 Power supply RCCB and manual switch used for a same indoor unit should have universality Indoor unit power supply for the same unit should use the same circuit and ON OFF simultaneously or it could seriously affect the system service life and the unit may fail to power on Number 63 the more operating mode first Only respond the heating mode 4 Consider ...

Page 15: ...copressor and other components PQE connects to weak current signal wire don t connect it to strong current All the connecting terminal should be fastened reliably ground wire should be grounded correctly Use wiring terminal power supply wire with a torus After power supply wire has been connected to the wiring base it needs to be reliably fastened Power on after a careful inspection and make sure ...

Page 16: ...ant critical thickness 0 44 kg m3 for R410A Outdoor unit Indoor unit Room full of leak refrigerant All refrigerant has run up Confirm the critical thickness through follow steps and take necessary actions 1 Calculate the sum of the charge volume A kg Total refrigerant volume of 10HP factory refrigerant volume super addition 2 Calculate the indoor cubage B m as the minimum cubage 3 Calculate the re...

Page 17: ... normal If there s vibration and abnormal noise when operating Test if heating function works normally for heating and cooling A C 2 Outdoor unit If there s vibration and abnormal noise when operating Whether the wind and noise and condenser water could influence your neighbour If there s refrigerant leakage CAUTION When electrified start the unit immediately or reboot after shutdown A C has prote...

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Page 19: ...ch having a contact separation of at least 3mm in all poles should be connected in fixed wiring The appliance shall be installed in accordance with national wiring regulations The temperature of refrigerant circuit will be high please keep the interconnection cable away from the copper tube The power cord type designation is H05RN R or above H07RN F MD13I 052CW DZD 16127000A03538 ...

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