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Installation and Maintenance

9.2 Connecting piping between Indoor 
        and Outdoor Units

Be sure to apply a sealing cap or water-proof tape 
to prevent dust or water from getting into the tubes 
before they are used.
Be sure to apply refrigerant lubricant to the 
matching surfaces of the flare and union before 
connecting them together

. This is effective for 

reducing gas leaks.(Figure 9.4)
For proper connection, align the union tube and 
flare tube straight with each other, then tighten the 
flare nut lightly to obtain a smooth match. (Figure 89.5) 
Tighten the sets crew with torque wrench to prevent 
leak of refrigerant. Carefully test leak before running 
the appliance.

Remove the burrs at the end of the copper tube 
with a tube reamer or file. When reaming, hold the 
tube bend downward and be sure that no copper 
scraps fall into the tube. This process is important 
and should be done carefully to make a good 
flare.(Figure 9.1,9.2)
Remove the flare nut from the unit and be sure to 
mount it on the copper tube.
Make a flare at the end of copper tube with a flare 
tool.(Figure 9.3)

9.4 Taping the Tubes

Note: Do not bind the armoring tape too tightly because 
this will decrease the heat insulation effect. Also be
sure the condensed drain hose splits away from bundle 
and drips clear of the unit and the piping.  

The two refrigerant tubes (and electrical wire if local 
codes permit) should be taped together with white 
armoring tape. The drain hose may also be included 
and taped together as a bundle with the piping. 
Wrap the tape from the bottom of the outdoor  unit 
to the top of the piping where it enters the wall. As 
you wrap the piping, overlap half of each previous 
tape. (See Figure 9.7)
Clamp the piping bundle to the wall, using one 
clamp approx. every 120 cm.

9.5 Finishing the installation

After completion of wrapping and insulation, seal the 

hole on the wall with suitable seal against wind and rain.

To avoid loss of heat and in prevention of the 
ground being wet by condensed water, all 
refrigerant tubes must be insulated with suitable 
insulating materials whose minimum thickness will 
be 6 mm. (See Figure 9.6)

9.3 Heat Insulation of the Refrigerant Tube

9.1 Flaring with Tube Expander 

Note: A good flare have the following characteristics:
Inside surface is glossy and smooth.
Edge is smooth.
Tapered sides are of uniform length.

9.Refrigerant piping

Clamp 

Insulated tubes

Tube

Tapered nuts

Flarer 

 Fig.9.3

Apply refrigerant  lubricant here and there

Union    Flare nut

Insulation 

Tube

Reamer 

Fig.9.1

Before 

After 

Fig.9.2

 Fig.9.5

 Fig.9.4

 Fig.9.6

 Fig.9.7

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Содержание YFKN18BZNREUH1

Страница 1: ...er R 410A 50Hz Heat Pump R 410A 50Hz Cooling Only Model YFKN42BZMREUH1 YFKN48BZMREUH1 YFKN55BZMREUH1 YFKN18BZNREUH1 YFKN24BZNREUH1 YFKN36BZNREUH1 Model YFJN18BZNRETH1 YFJN24BZNRETH1 YFJN36BZNRETH1 YFJ...

Страница 2: ...erant Piping 14 4 1 The Piping Material 14 4 2 Piping Connection 14 5 Drain Piping 15 6 Electrical wiring 16 7 Attaching the Air Return Grille 16 8 The Installation of the Outdoor Unit 17 8 1 Installa...

Страница 3: ...damage It refers to the remarks and instruction to the operation maintenance and service DANGER WARNING Alert Symbols CAUTION 1 Contents NOTE This air conditioner has been designed for the following t...

Страница 4: ...ing the air conditioner the main power switch the of air conditioner must be cut off immediately and the agent must be contacted If the supply cord is damaged it must be replaced by the factory or its...

Страница 5: ...Intake Inside of Horizontal Louver 3 Composition of the Air conditioner Indoor Unit Outdoor Unit Notes Figures in the manual are only simple representation of the appliance it may not comply with the...

Страница 6: ...cy switch It lights on during operation It lights off all when setting SLEEP mode Run indicator Red Wired remote controller Wireless remote controller Wire remote controller optional You can control t...

Страница 7: ...rned off by user The fan of the indoor unit will never stop running in cooling operation It remains running even if the compressor stops working Heating capacity depends on external factors as outdoor...

Страница 8: ...bs 4 then remove the holding screws 4 or 6 as indicated by the arrow marks Step2 Open the air return grille to an angle of more than 45 and take out the air filter from the air inlet grille by holding...

Страница 9: ...4 way valve Heat exchanger Liquid piping Heating cycle Cooling cycle INDOOR UNIT OUTDOOR UNIT Heat exchanger EEV Service valve Outdoor unit Indoor unit Terminal Terminal SI L N SI L N Power connecting...

Страница 10: ...es other than the specified refrigerant R410A such as air Any presence of air or other foreign substance in the refrigerant circuit causes an abnormal pressure rise or rupture resulting in injury If a...

Страница 11: ...8 9 10 11 12 13 14 Tool Knife or wire stripper Tube expander Inner hexagon spanner Tape measure Gradienter Hammer Churn drill 3 1 Before installation Unit type Power supply specification When moving t...

Страница 12: ...anging And Adjustment For Pipe Cover Fixing For Refrigerant Piping Connection For Drain Pipe Connection For Joint Socket Connection For Drain Hose Connection For Drain Hose Cover 1 1 1 1 2 2 1 10 8 1...

Страница 13: ...rain properly The ceiling is strong enough to bear the weight of the indoor unit Sufficient clearance for maintenance and servicing Piping between the indoor and outdoor units is within the allowable...

Страница 14: ...let Right outlet Rear outlet Drain outlet rear right Drain outlet rear left Drain outlet right Drain outlet left Fig 3 3 3 Fig 3 3 4 Fig 3 3 5 Slide stoppers 4 places of the catches then remove the sc...

Страница 15: ...nclosed paper pattern as a reference and drill the holes for the suspension bolts and pipe Note Decide the locations based on the direct measurements ii After the locations are properly placed the pap...

Страница 16: ...panners Fig 4 3 Screw up the nut torque 3 After finishing connecting the refrigerant pipes keep it warm with the insulation material 6 35mm 9 52mm 12 7mm 15 88mm 19 05mm Tube size 20 40 60 80 100 Torq...

Страница 17: ...ld be insulated because condensation may form there causing water to leak Drain piping passing indoors Drain sockets Referring the figure below insulate the drain socket and drain hose using the inclu...

Страница 18: ...n grille When clamping the wiring use the included clamping material as shown in the FIG 6 1 to prevent outside pressure being exerted on the wiring connections and clamp firmly When doing the wiring...

Страница 19: ...d onto the wall make sure that the wall and the supporting rack is strong enough to hold the weight of the appliance Release the setscrews of the electric cover remove the electric cover If the valve...

Страница 20: ...eat insulation effect Also be sure the condensed drain hose splits away from bundle and drips clear of the unit and the piping The two refrigerant tubes and electrical wire if local codes permit shoul...

Страница 21: ...cal technical service center of our company for further information Narrow pipe Hex wrench Wide pipe Service valve Bonnet of service valve Bonnet of narrow valve Bonnet of wide valve Indoor unit Outdo...

Страница 22: ...ng flexible cord make sure to use the round crimp style terminal for connection to the power supply terminal block Place the round crimp style terminals on the wires up to the covered part and secure...

Страница 23: ...nt possible harm to the environment or human health from uncontrolled waste disposal recycle it responsibly to promote the sustainable reuse of material resources To return your used device please use...

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