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38VYX050/38VYX080
Heat pump split system outdoor units
GB - 1
ENGLISH
For operation and maintenance instructions of this unit as well as installation
instructions of the indoor unit, refer to the relevant manuals.
Contents
Page
Precautions for safety .................................................................................................................... 2
Accessory and refrigerant ............................................................................................................. 3
Selection of installation.................................................................................................................. 4
Refrigerant piping . ........................................................................................................................ 5
Evacuating. .................................................................................................................................... 9/10
Electrical connections.................................................................................................................... 10
Final installation checks ................................................................................................................ 11/12
ATTENTION INSTALLERS AND SERVICE TECHNICIANS!
AIR CONDITIONER WITH R-410A – QUICK REFERENCE GUIDE
• R-410A refrigerant operates at 50%-70% higher pressures than R-22. Be sure that servicing
equipment and replacement components are designed to operate with R-410A.
• R-410A refrigerant cylinders are pink.
• R-410A refrigerant cylinders have a dip tube which allows liquid to flow out with the cylinder in a vertical
position with the valve at the top.
• R-410A systems should be charged with liquid refrigerant. Use a commercial type metering device
in the manifold hose in order to vaporize the liquid refrigerant before it enters in the unit.
• A vacuum pump is not enough to remove moisture from oil.
• Oils absorb moisture rapidly. Do not expose oil to atmosphere.
• Never open system to atmosphere while it is under vacuum.
• When the system must be opened for service, break vacuum with dry nitrogen.
• Do not vent R-410A into the atmosphere.
• Use only Carrier matching indoor units (Table I).
Table I
Heat
Cassette Hi-Wall Satellite Console Power
pump
models
“40KQV” “42PQV” “40SQV” “42VQV” supply
38VYX 050 050 050 050 050
38VYX 080 080 080 080 080
220
÷240V ~ 50Hz
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