Carrier 38YY...G Installation Manual page 2

38YY...G / 38YYS...G
Heat pump split system outdoor units
For operation and maintenance instructions of this unit as well as installation
instructions of the indoor unit, refer to the relevant manuals.
Contents
Dimensions and weight .................................................................................................................
Connections ...................................................................................................................................
Minimum clearances ......................................................................................................................
Operating limits ..............................................................................................................................
Accessories ...................................................................................................................................
General information .......................................................................................................................
Warnings: avoid .............................................................................................................................
Refrigerant connections ................................................................................................................
Electrical connections ....................................................................................................................
Electrical data ................................................................................................................................
Pump down and check the refrigerant charge ...............................................................................
Unit maintenance ...........................................................................................................................
Troubleshooting and guide for the owner ......................................................................................
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.
• R-410A, as other HFCs, is only compatible with oils selected by the compressor manufacturer.
• 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 and replace filter driers.
• Do not vent R-410A into the atmosphere.
• Use only Carrier matching indoor units (Table I).
Unit size
018 - 024
028 - 036 - 048
Table I
Cooling only Heat pump
models
(A/C)
— 38YY-018G
— 38YY-024G
— 38YYS018G
— 38YYS024G
— 38YY-028G
— 38YY-036G
— 38YY-048G
*(A)= Aluminium version
R-410A
Quantity
Oil type
POE
POE
Hi-Wall
models "42PHQ" series
(H/P) H/P
42PHQ018
42PHQ024
42PHQ018
42PHQ024
—
—
—
Drier already installed on
cc liquid line of the unit
1120
1250
Hi-Wall
"42HMC---N" "42VMC---N"
series H/P series H/P
42HMC018N 42VMC018 (A)*N
42HMC024N 42VMC024 (A)*N
42HMC018N 42VMC018 (A)*N
42HMC024N 42VMC024 (A)*N
— 42VMC028 N
— 42VMC036 N
— 42VMC048 N
Page
6/8
9/10
YES
YES
Console
Power
supply
230V ~ 50Hz
2
2
3
3
3
4
5
10
11
12
12
GB - 1