Haier 1UH071N1ERG [138/238] Smart power

Haier 1UH071N1ERG [138/238] Smart power
136
Smart Power
NOTICE
Do not use ux when brazing the refrigerant piping. For brazing, use phosphor copper brazing ller metal (BCuP)
which does not require a ux.
(lf a chlorine ux is used, the piping will corrode, and if the ux contains uoride, if will cause the coolant oil to
deteriorate, adversely affecting the coolant piping system.)
7.4.1 Necessary Tools and Materials
Prepare the following tools and materials necessary for installing and servicing the unit. Necessary tools for use
with R410A (Adaptability of tools that are for use with R22 and R407°C) .
1. To be used exclusively with R410A (Not to be used if used with R22 or R407°C )
Tools/Materials Use Notes
Gauge manifold Evacuating, refrigerant charging 5.09MPa on the High-pressure side.
Charging hose Evacuating, refrigerant charging
Hose diameter larger than the
conventional ones.
Refrigerant recovery equipment Refrigerant recovery
Refrigerant cylinder Refrigerant charging
Write down the refrigerant type. Pink in
color at the top of the cylinder.
Refrigerant cylinder charging port Refrigerant charging
Hose diameter larger than the
conventional ones.
Flare nut Connecting the unit to piping Use Type-2 Flare nuts.
2. Tools and materials that may be used with R410 with some restrictions
Tools/Materials Use Notes
Gas leak detector Detection of gas leaks The ones for HFC type refrigerant may be used.
Vacuum pump Vacuum drying May be used if a reverse ow check adaptor is attached.
Flare tool Flare machining of piping
Changes have been made in the are machining
dimension.Refer to the next page.
Refrigerant recovery
equipment
Recovery of refrigerant May be used if designed for use with R410A.
3. Tools and materials that are used with R22 or R407C that can also be used with R410A
Tools/Materials Use Notes
Vacuum pump with a check valve Vacuum drying
Bender Bending pipes
Torque wrench Tightening are nuts
Only 12.70 (1/2'') and 15.88 (5/8'') have a larger
are machining dimension.
Pipe cutter Cutting pipes
Welder and nitrogen cylinder Welding pipes
Refrigerant charging meter Refrigerant charging
Vacuum gauze Checking vacuum degree
4.Tool and materials that must not used with R410A
Tools/Materials Use Notes
Charging cylinder Refrigerant charging Must not be used with R410-type units.
Tools for R410A must be handled with special care, and keep moisture and dust from entering the cycle.

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