Carrier installation manual 38VYX110/38VYX130 Heat pump split system outdoor units, Contents

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

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