Carrier 38AK012 Manuel D’Utilisation
4
CONSIDER SYSTEM REQUIREMENTS
•
•
Consult local building codes and NEC for special instal-
lation requirements.
lation requirements.
•
Allow sufficient space for airflow clearance, wiring,
refrigerant piping, and unit servicing. See Fig. 2.
refrigerant piping, and unit servicing. See Fig. 2.
•
Locate unit so that condenser airflow is unrestricted on
all sides and above. Refer to Fig. 2.
all sides and above. Refer to Fig. 2.
•
Unit may be mounted on a level pad directly on base
rails or mounted on raised pads at support points. See
Table 2 for weight distribution based on recommended
support points.
rails or mounted on raised pads at support points. See
Table 2 for weight distribution based on recommended
support points.
NOTE: If vibration isolators are required for a particular instal-
lation, use corner weight information in Table 2 to make
proper selection.
lation, use corner weight information in Table 2 to make
proper selection.
Table 2 — Weight Distribution
NOTES:
1. Dimensions in [
1. Dimensions in [
] are in millimeters.
2. See Fig. 3 for additional information.
Step 2 — Rig and Mount the Unit
RIGGING — These units are designed for overhead rigging.
Refer to rigging label for preferred rigging method. Spreader
bars are not required if top crating is left on unit. All panels
must be in place when rigging. (See Fig. 3.) As further protec-
tion for coil faces, plywood sheets may be placed against sides
of unit, behind cables. Run cables to a central suspension point
so that angle from the horizontal is not less than 45 degrees.
Raise and set unit down carefully.
Refer to rigging label for preferred rigging method. Spreader
bars are not required if top crating is left on unit. All panels
must be in place when rigging. (See Fig. 3.) As further protec-
tion for coil faces, plywood sheets may be placed against sides
of unit, behind cables. Run cables to a central suspension point
so that angle from the horizontal is not less than 45 degrees.
Raise and set unit down carefully.
If it is necessary to roll unit into position, mount unit on
rails, using a minimum of 3 rollers. Apply force to rails, not
unit. If unit is to be skidded into position, place it on a large pad
and drag it by the pad. Do not apply any force to unit.
unit. If unit is to be skidded into position, place it on a large pad
and drag it by the pad. Do not apply any force to unit.
Raise from above to lift unit from rails or pad when unit is
in final position.
After unit is in position, remove all shipping materials and
top crating.
COMPRESSOR MOUNTING — Compressors are shipped
from the factory held down by 4 bolts. After unit is installed,
loosen each bolt until the snubber washer can be moved with
finger pressure. See Fig. 4.
COMPRESSOR MOUNTING — Compressors are shipped
from the factory held down by 4 bolts. After unit is installed,
loosen each bolt until the snubber washer can be moved with
finger pressure. See Fig. 4.
Step 3 — Complete Refrigerant Piping Con-
nections —
nections —
Suction connection is sweat with plastic
cap; liquid connection is sweat with plastic cap. Refer to
Table 3A or 3B for the proper line sizes. Follow standard
piping practices.
SIZE REFRIGERANT LINES — Consider length of piping
required between condensing unit and air handler, amount of
liquid lift, and compressor oil return. See Table 4A and 4B and
also refer to Part 3 of Carrier System Design Manual for design
details and line sizing. Refer to air handler installation instruc-
tions for additional information.
Table 3A or 3B for the proper line sizes. Follow standard
piping practices.
SIZE REFRIGERANT LINES — Consider length of piping
required between condensing unit and air handler, amount of
liquid lift, and compressor oil return. See Table 4A and 4B and
also refer to Part 3 of Carrier System Design Manual for design
details and line sizing. Refer to air handler installation instruc-
tions for additional information.
Table 3A — Refrigerant Piping Sizes — 60 Hz
LEGEND
Table 3B — Refrigerant Piping Sizes — 50 Hz
LEGEND
NOTES FOR TABLES 3A AND 3B:
1. Pipe sizes are based on a 2 F (1 C) loss for liquid and suction
1. Pipe sizes are based on a 2 F (1 C) loss for liquid and suction
lines.
2. Pipe sizes are based on the maximum linear length shown for
each column, plus a 50% allowance for fittings.
3. Charge units with R-22 in accordance with unit installation
instructions.
4. Line size conversion to mm is:
in.
mm
1
/
2
12.7
5
/
8
15.9
1
1
/
8
28.6
1
3
/
8
34.9
UNIT
38AK
STD UNIT
CORNER
W
CORNER
X
CORNER
Y
CORNER
Z
Lb
Kg
Lb
Kg
Lb
Kg
Lb
Kg
Lb
Kg
With Aluminum Coil
007
340 154
86
39
53
24
77
35
124
56
008
392 177
86
39
78
35
99
45
107
49
012
426 192
89
40
92
42
109
49
105
48
S008
510 231 115
52
89
40
133
60
173
87
S009,S012
564 256 133
60
97
44
141
64
193
88
With Copper Coil
007
386 175 106
48
65
30
82
37
133
60
008
460 208 114
52
95
43
108
49
121
55
012
503 215 118
53
116
53
119
54
119
54
S008
578 262 143
65
106
48
142
64
187
85
S009,S012
632 287 161
73
114
52
150
68
207
94
Be sure unit panels are securely in place prior to rigging.
LINEAR LENGTH OF PIPING — FT (M)
UNIT
38
0-25
(0-7.6)
25-50
(7.6-15.2)
50-75
(15.2-22.9)
75-100
(22.9-30.5)
Line Size (in. OD)
L
S
L
S
L
S
L
S
AK007
1
/
2
1
1
/
8
1
/
2
1
1
/
8
1
/
2
1
1
/
8
1
/
2
1
1
/
8
AK008
1/
2
1
1
/
8
1
/
2
1
1
/
8
5
/
8
1
1
/
8
5
/
8
1
3
/
8
AK012
5
/
8
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
AKS008
1
/
2
1
1
/
8
1
/
2
1
1
/
8
5
/
8
1
1
/
8
5
/
8
1
3
/
8
AKS009
5
/
8
1
1
/
8
5
/
8
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
AKS012
5
/
8
1
1
/
8
5
/
8
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
L — Liquid LIne
S — Suction Line
S — Suction Line
LINEAR LENGTH OF PIPING — FT (M)
UNIT
38
0-25
(0-7.6)
25-50
(7.6-15.2)
50-75
(15.2-22.9)
75-100
(22.9-30.5)
Line Size (in. OD)
L
S
L
S
L
S
L
S
AK007
1
/
2
1
1
/
8
1
/
2
1
1
/
8
1
/
2
1
1
/
8
1
/
2
1
1
/
8
AK008
1
/
2
1
1
/
8
1
/
2
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
AK012
5
/
8
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
AKS008
1
/
2
1
1
/
8
1
/
2
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
AKS009
5
/
8
1
1
/
8
5
/
8
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
AKS012
5
/
8
1
1
/
8
5
/
8
1
1
/
8
5
/
8
1
3
/
8
5
/
8
1
3
/
8
L — Liquid LIne
S — Suction Line
S — Suction Line