GB - 1
38VYM
R-410A
Heat pump multisplit system outdoor unit
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
Dimensions and weight ...............................................................................
2
Minimum clearances ...................................................................................
2
Connections ................................................................................................
3
Operating limits ...........................................................................................
3
General information ....................................................................................
4
Warnings: avoid ..........................................................................................
5
Refrigerant connections .............................................................................
6/8
Electrical connections .................................................................................
9/11
Electrical data .............................................................................................
11
Incorrect wiring and piping procedure check ..............................................
12
Test procedure ............................................................................................
13
Pump-down .................................................................................................
13
Maintenance ...............................................................................................
13
Guide for the owner .....................................................................................
13
Accessories ................................................................................................
13
R-410A – QUICK REFERENCE GUIDE
• R-410A refrigerant operates at pressures 50%-70% higher 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 of cylinder in
an upright position.
• R-410A systems must be charged with refrigerant in liquid phase. Use a commercial
type metering device in the manifold hose in order to vaporize the liquid refrigerant
before it enters in the unit.
• R-410A, as other HFCs, is only compatible with oils selected by the compressor
manufacturer.
• POE oils absorb moisture rapidly. Do not expose oil to atmosphere.
• Never open system to atmosphere while it is under vacuum.
• Do not vent R-410A into the atmosphere.
• Use only Carrier matching indoor units.
Heat pump model
Power supply
38VYM-18
38VYM-28
230V ~ 50Hz
38VYM-32