Carrier 38HDF018-036 User Manual
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Only use factory specified liquid-line filter driers with rated
working pressures less than 600 psig.
NOTE: Do not install a suction-line filter drier in liquid line.
MAKE PIPING SWEAT CONNECTIONS — Remove plastic
caps from liquid and suction service valves. Use refrigerant
grade tubing. Service valves are closed from the factory and are
ready for brazing. After wrapping the service valve with a wet
cloth, the tubing set can be brazed to the service valve using ei-
ther silver bearing or non-silver bearing brazing material. Con-
sult local code requirements. Refrigerant tubing and the indoor
coil are now ready for leak testing.
NOTE: Unit is shipped with R-410A factory charge indicated
on nameplate.
Pass nitrogen or other inert gas through piping while braz-
ing to prevent formation of copper oxide.
PROVIDE SAFETY RELIEF — A fusible plug is located in
unit suction line; do not cap this plug. If local code requires
additional safety devices, install as directed.
Table 1A — 38HDF018-036 Physical Data
LEGEND
*Unit shipped with full factory charge. See ARI (Air Conditioning and
Refrigeration Institute) capacity table for proper charge and piston
for each fan coil type.
†24 v and a minimum of 40 va is provided in the fan coil unit.
To avoid damage while brazing, service valves should be
wrapped with a heat-sinking material such as a wet cloth.
When brazing tubing sets to the service valves, a brazing
shield MUST be used to prevent damage to the painted unit
surface.
UNIT 38HDF
018
024
030
036
NOMINAL CAPACITY (Tons)
1.5
2.0
2.50
3.0
OPERATING WEIGHT (lb)
166
176
187
250
REFRIGERANT TYPE
R-410A
METERING DEVICE
AccuRater (Located at Fan Coil)
CHARGE (lb)*
4.8
5.3
5.0
7.1
OUTDOOR FAN
Rpm/Cfm
840/1720
840/1720
840/1720
850/1720
Diameter (in.)
18
18
18
24
No. Blades
3
3
3
3
Motor (hp)
1
/
8
1
/
8
1
/
8
1
/
4
OUTDOOR COIL
Face Area (sq ft)
5.82
7.27
7.27
12.1
No. Rows
2
3
3
2
FPI
20
20
20
20
HIGH PRESSURE SWITCH
Cut-In (psig)
420 ± 25
420 ± 25
420 ± 25
420 ± 25
Cutout (psig)
650 ± 10
650 ± 10
650 ± 10
650 ± 10
LOW PRESSURE SWITCH
Cut-In (psig)
45 ± 25
45 ± 25
45 ± 25
45 ± 25
Cutout (psig)
20 ± 5
20 ± 5
20 ± 5
20 ± 5
REFRIGERANT LINES
Connection Type
Sweat
Liquid Line (in.) OD
3
/
8
3
/
8
3
/
8
3
/
8
Vapor Line (in.) OD
5
/
8
5
/
8
3
/
4
3
/
4
Max Length (ft)
200
200
200
200
Max Lift (ft)
65
65
65
65
Max Drop (ft)
150
150
150
150
COMPRESSOR
Type
Scroll
Model
ZP16K5E-PFV
ZP21K5E-PFV
ZP25K5E-PFV
ZP34K5P-PFV
Oil Charge (POE - oz)
25.0
25.0
25.0
42.0
Accumulator
Yes
CONTROLS
Fusible Plug (F)
210
Control Voltage†
24 vac
System Voltage
208/230 v
208/230 v
208/230 v
208/230 v, Single and 3 Phase,
460 v, 3 Phase
FINISH
Gray
FPI
— Fins Per Inch
POE — Polyol Ester