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Fig. 1 — 38AKS Units
NOTES:
1. Use 2 in. OD (50 mm) pipe or hooks in lifting holes.
2. Rig with 4 cables and spread with 2 ''D'' long and two ''A'' long
2 x 4's in. (50 x 100 mm) or equal.
3. Run the rigging cables to a central suspension point so that the
angle from the horizontal is not less than 45 degrees.
All panels must be in place when rigging.
LIFTING
MAX SHIP.
HOLES
UNIT
WT
''A''
38AKS
Lb
Kg
in.
mm
028
1924
872 81 2057 43.0 1092 28.0
034
2115
960 81 2057 43.0 1092 28.0
044
2797 1207 99 2515 49.0 1245 30.5
Fig. 2 — Rigging with Spreader Bars
(Field Supplied)
CENTER OF GRAVITY
''D''
''B''
''C''
in.
mm
in.
mm
in.
mm
711
73.5 1867
711
73.5 1867
775
73.5 1867
Placing Unit —
There must be 4 ft (1220 mm) for ser-
vice on all sides of unit, and a minimum of 8 ft (2440 mm)
clear air space above unit. For multiple units, allow 8 ft
(2440 mm) separation between units for airflow and service.
Mounting Unit —
of mounting holes in base rails is recommended for securing
unit to supporting structure or for mounting unit on vibra-
tion isolators, if required. Fasteners for mounting unit are
field supplied. Be sure to mount unit level to ensure proper
oil return to compressors.
Compressor Mounting —
is held down by 4 bolts. After unit is installed loosen each
bolt using nut indicated in Fig. 3 until flatwasher (
[9.5 mm]) can be moved with finger pressure.
INSTALLATION
Refrigerant Piping Connections —
pend on length of piping required between condensing unit
and evaporator. See Table 2A or 2B. It is important to con-
sider liquid lift and compressor oil return. Refer to Part 3 of
Carrier System Design Manual for line sizing information,
and Fig. 4 for recommended piping details.
Liquid Line Solenoid Drop Control —
supplied solenoid valve must be installed at the indoor unit
(fan coil) per Fig. 5, and wired per wiring label found on
unit. The solenoid assures that system refrigerant is in the
high-pressure side (condenser and liquid line) of the system
during the off cycle. Refrigerant migration is minimized.
Factory-supplied liquid line solenoid valve connecting sizes
are
7
⁄
-in. (22.2 mm) ODF for inlet and
8
ODM for outlet.
Failure to properly install liquid line solenoid at the in-
door unit as described, without Carrier authorization, may
VOID warranty.
Filter Drier and Moisture Indicator —
should have a filter drier and a sight glass (moisture indi-
cator) field installed. Select the filter drier for maximum unit
capacity and minimum pressure drop. Figure 5 shows rec-
ommended locations of filter drier(s) and sight glass. Com-
plete the refrigerant piping from the evaporator to the con-
denser before opening the liquid and suction lines at the
condensing unit. One filter drier may be installed at location
A in Fig. 5, or 2 filter driers may be installed at locations B.
3
When unit is in proper location, use
As shipped, compressor
Line sizes de-
The factory-
7
⁄
-in. (22.2 mm)
8
Every unit
3
⁄
in.
8
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