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 install ation.................................................................................................................. 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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