Carrier 38AH044-134 User Manual
É,
COMMERCIAL
UNITARY
SYSTEMS
38AH044-134
Air-Cooled Condensing Units
50/60 Hz
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS.....................
INSTALLATION
Step 1 — Rig and Place Unit
• DOMESTIC UNITS
• EXPORT UNITS
• PLACING UNITS
Step 2 — Check Compressor Mounting
• UNITS 38AH044-084
• UNITS 38AH094-I34
Step 3 — Make Refrigerant Piping
Connections .............................................
• UNITS 38AH044-084
• UNITS 38AH094-134
Step 4 — Make Electricai Connections
• POWER SUPPLY
• FIELD POWER CONNECTIONS
• MAIN POWER
• CONTROL CIRCUIT WIRING
Step 5 — Instali Accessories
• LOW-AMBIENT OPERATION
• MISCELLANEOUS ACCESSORIES
PRE-START-UP .......................................
START-UP
SERViCE....................................................
CONTROL .................................................
TROUBLESHOOTING
START-UP CHECKLIST
Installing, starting up, and servicing this equipment can
be hazardous due to system pressures, electrical compo
nents, and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment.
Untrained personnel can perform basic maintenance func
tions, such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the equipment, observe precautions in
the literature, and on tags, stickers, and labels attached to the
equipment and any other safety precautions that may apply.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Use care in handling, rigging, and setting bulky
equipment.
.........................................
....................
.................
................................................
..............................
...................
SAFETY CONSIDERATIONS
... 1
. 1-37
... 1
............
..........
37
........
37-43
........
44-47
........
47-50
51,52
CL-L CL-2
13
23
37
INSTALLATION
Step 1 — Rig and Place Unit — All units are de
signed for overhead rigging, and it is important that this method
be used. Lifting holes are provided in the frame base rails,
which are marked for rigging (see rigging label on the unit
and Tables 1, 2A, and 2B for rigging weights and center of
gravity). It is recommended that field-supplied pipes, of suf
ficient length to extend at least 12-in. (305 mm) beyond the
frame, be passed through the holes.
To maintain unit stability while lifting, use 4 cables,
chains, or straps of equal length. Attach one end of
each cable to one pipe end and the other end of each
cable to the overhead rigging point.
Use spreader bars or frame to keep the cables, chains,
and straps clear of the unit sides. Leave standard coil pro
tection packaging in place during rigging to provide protec
tion to coils. Remove and discard all coil protection after
rigging cables are detached.
DOMESTIC UNITS — For units 38AH044-084, 124, and
134; standard unit packaging consists of coil protection only.
There is no standard packaging provided for units 38AH094
and 104. Skids are not provided. If overhead rigging is not
available at the jobsite, place the unit on a skid or pad before
dragging or rolling. When rolling, use a minimum of
3 rollers. When dragging, pull the pad or skid. Do not apply
force to the unit. When in final position, raise from above to
lift unit off the pad or skid.
EXPORT UNITS — All export units are mounted on skids
with vertical coil protection. Leave the unit on the skid until
it is in final position. While on the skid, the unit can be rolled
or skidded. Apply force to the skid, not to the unit. Use a
minimum of 3 rollers when rolling. When in final position,
raise from above to remove the skid.
PLACING UNITS
Units 38AH044-084 — Refer to Fig. 1 and 2 for airflow clear
ances. Recommended minimum clearances are 6 ft (1829 mm)
for unrestricted airflow and service on sides of unit, 5 ft
(1524 mm) on ends, and unrestricted clear air space above
the unit. Provide ample space to connect liquid and suction
lines to indoor unit. For multiple units, allow 8 ft (2440 mm)
separation between units for airflow and service.
A CAUTION
Do not forklift these units unless the unit is attached to
a skid designed for forklifting.
S till
eg
Book 11 PC 111 Catalog No 533-812 Printed in U.S A. Form 38AH-14SI Pg 1 5-96 Replaces: 38AH-13SI
Tab 3a
ELECTRIC SHOCK HAZARD.
Open all remote disconnects before servicing
this equipment.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obiigations.
The placement area must be level and strong enough to
support the operating weight of the unit (see Table 3A or
3B). When unit is in proper location, use of mounting holes
in base rails is recommended for securing unit to supporting
structure. For mounting unit on vibration isolators, a perim
eter support channel between the unit and the isolators is
recommended. Fasteners for mounting unit are field sup
plied. Be sure to mount unit level to ensure proper oil return
to compressors.
Units 38AH094-134 — Refer to Fig. 3-6 for airflow
clearances. Recommended minimum clearances are 6 ft
(1829 mm) for unrestricted airflow and service on sides of
unit, 5 ft (1524 mm) on ends, and unrestricted clear air space
above unit. Provide ample space to connect liquid and suc
tion lines to indoor unit. For multiple units, allow
8 ft (2440 mm) separation between units for airflow and
service.
A CAUTION
Do not forklift these units unless the unit is attached to
a skid designed for forklifting.
The placement area must be level and strong enough to
support the operating weight of the unit. See Table 4A
or 4B. Refer to the following paragraphs for the proper place
ment of the unit.
Units 38AH094.104 — For mounting units on vibration iso
lators, a perimeter support channel is required between the
unit and the support isolators. The perimeter support chan
nel must be sized to support the fully assembled unit. Do not
support units on individual isolation supports. Support chaiinel, hardware, and fasteners are field supplied. When unit is
in proper location, level unit and bolt into position with fieldsupplied bolts.
Units 38AH124.134 — For ease of shipment and handling,
unit 38AH124 is shipped as 2 modules (124A and 124B)
and unit 38AH134 is shipped as 2 modules (134A and 134B).
The modules must be connected at the final installation site
with the factory-shipped piping and sheet metal trim kit mounted
on Module 124A or 134A. See Fig. 7.
A WARNING
Do not move assembled 38AH124 or 134 units as a single
assembly. Always move modules individually during in
stallation or at any other time.
Mark installation site for placement of Modules 124 A and
124B or Modules 134A and 134B. See Table 4A or 4B for
final assembled dimensions. A service space of 24 in.
(610 mm) is required between the 2 modules for piping and
sheet metal trim installation.
Place Module 124A or 134A in position, ensuring that the
control box is at the end opposite the service space. See
Fig. 8.
Remove sheet metal and tubing from Module 124A or 134A
sheet metal trim kit (Fig, 7). Remove sheet metal cover pan
els from return-bend end of unit facing the service space.
See Fig. 8. These panels may be discarded or saved for re-
installation if module is moved from site. See Fig. 9.
UNIT
38AH
Dimension X 49 (1232)
Dimension Y
Dimension X-C 49 (1234) 48 (1229)
Dimension Y-C 39 (993) 39 (991)
Dimension K
Dimension L
Dimension K-C
Dimension L-C
LEGEND
— — Not Applicable
C — Copper Fin Coils
044 054 064
48 (1224) 50 (1260)
39 (984)
39 (978)
—
—
—
—
—
— —
— —
Y
A
Table 1 — Rigging Center of Gravity — in. (mm)
MODULE
50 (1260)
38 (968)
50 (1260) —
39 (986) —
—
COMPR COMPR
57 (1443)
38 (968)
50 (1261)
39 (986)
CONTROL
BOX
END
39 (993) 39 (991) 31 (787) 34 (851)
56 (1425)
40 (1006)
—
_
COMPR COMPR
074
— — — — —
— — — — — 38 (968) —
— — — — —
—
084 094
57 (1448) 66 (1676)
56 (1422)
40 (1008) 31 (787)
66 (1676) 63 (1600)
— —
104
63 (1600)
34 (851)
r—"T I
TOP VIEW, TYPICAL
124, 134 ONLY
124A
—
MODULE
124B
-
—
50 (1260)
50 (1260)
39 (986)
CONTROL
BOX
END
MODULE
134A
50 (1260)
38 (968)
50 (1260)
39 (986)
—
—
—
MODULE
134B
—
—
—
—
57(1443)
39 (993)
56 (1425)
40 (1006)
Remove sheet metal cover panels from return-bend end of
Module 124B or 134B. Place Module 124B or 134B in po
sition. The exposed retnrn-bend ends of each module are now
opposite each other and facing the service space. The com
pressors of each modnle are on opposite sides of the unit.
IMPORTANT; Modules must be placed 24 in.
(610 mm) apart and sqnare relative to each other.
The modules are now in position for piping installation
and final assembly. See Fig. 8. For mounting units on vi
bration isolators, a perimeter support channel is required be
tween the assembled unit and the support isolators. The pe
rimeter support channel must be sized to support the fully
assembled unit. Do not support modules on individual iso
lation supports. Support channel, hardware, and fasteners are
field supplied.
When unit is in proper location, level unit and bolt into
position with field-supplied bolts.
Step 2 — Check Compressor Mounting
UNITS 38AH044-084 — Compressors are mounted on pans
and are held down by 4 bolts dnring shipment. After unit is
installed, loosen each of these bolts until the snubber washer
can be moved with finger pressure. See Fig. 10.
UNITS 38AH094-134 — Units 38AH094 and 104 compres
sors are mounted on rails and held down by rail bolts during
shipment. After unit is installed, loosen the rail bolts to al
low the rails and compressors to float freely on the springs
located under the rails. See Fig. 10.
Units 38AH124 and 134 compressors are mounted on pans
and are held down by 4 bolts during shipment. After unit is
installed, loosen each of these bolts until snubber washer can
be moved with finger pressure. See Fig. 10.
Table 2A — Operational Corner Weights with
Refrigerant Charge (Approximate) — Lb
UNIT
38AH
044
044C
054
054C
064
064C
074
074C
084
084C
094
094C
104
104C
MODULE
38AH
124A
124A-C
124B 3630
124B-C 4063
134A
134A-C
134B
134B-C
C — Copper Fin Coils
NOTE: Total weight may differ from summation of corner weights due
to rounding of numerals
TOTAL
WEIGHT
3259 939 893 695
3547
3309
3597 1034 978 771 814 054C
3565
3998 1125 1117
3812 1146 986
4229
4057 1220 1049
4735 1425 1186 965 1159 084C
5088 1114 2192
5813 1273
5435 1240 2138
6160
3630 1037 1030 779 785 124A
4063 1144 1137 889
3630 1037 1030 779 785 134A
4063 1144 1137 889
3877 1167
4294
LEGEND
OPERATIONAL CORNER WEIGHT
A
1013
964
1018
1272
1405
1037
1144 1137 889 894 124B-C
1293 1080
В
967
905
1011
1059
2504 1350
2423
1030
997
C D
765
697 742 054
765 771
874
777
862
827
1182
1302
1476 856 104C
779
789 924 134B 1759
874 1047 134B-C
732 044
802 044C
879 064C
903
1035
961 084
601
686
755 104
894
785
894
Table 2B — Operational Corner Weights with
Refrigerant Charge (Approximate) — Kg
UNIT
38AH
064
074
074C
094 2308
094C
MODULE
38AH
124A-C
124B
134A-C
C — Copper Fin Coils
NOTE. Total weight may differ from summation of corner weights due
to rounding of numerals
TOTAL
WEIGHT
1478 426
1609 460 438
1501
1632
1617 462
1813 510
1729 520 447
1918 577
1840 553 476
2148 646 538
2637 577 1136
2465 562 970 591
2794 637
1647
1843
1647 470 467 353 356
1843 519 516
1647
1843
1948 587 490
LEGEND
OPERATIONAL CORNER WEIGHT
A
437 411 316 337
469
505 994 536 272
470 467
519
470 467
519
529 452 358 419
В
405
444 350 369
459
508
481 391
1099
516
516
C D
316
347 364
347
397
352
375 436
438 526
612
670
353 356
403 405
403
353 356
403 405
396
332
350
399
410
470
311
342
388
405
475
Г'
CONTROL
BOX
END
COMPR
Г'
TOP VIEW, TYPICAL
COMPR
SUCTION
CONNECTiON(S)
LIQUID
CONNECTION(S)
SUCTION C 2'-iVi6" [627mm]
LIQUID D
SUCTION {Ckt A) V-713/16'' [503mm]
SUCTION (Ckt B)
LIQUID (Ckt A)
LIQUID (Ckt B)
DUAL CKT SINGLE CKT
2Ve" Dia [54 mm]
Va" Dia [22 mm] IVa" Dia [29 mm]
1'-10Vi6" [561mm] 1'-10yi6" [567mm]
2'-%" [626mm]
2'-5%" [756mm] 2'-10%" [879mm]
2'-10%" [879mm]
25/e" Dia [67 mm]
r-10^/w" [567mm]
2'-%" [626mm]
—
—
RELIEF VALVES LOCATED ON
THE C0HPRE55OR5 ARE EQUIPPED
WITH A 3/8" 5AE FLARE FOR
FIELD CONNECTION
SCALE 1<6
6 1/8'-
CISSmi]
OO
O O
WITH FIELD POWER SUPPLY CONNECTIONS.
ooooooOOOOO
O OOOO
TOP VIEW OF CONTROL BOX SHELF
(SEE NOTE 4 ANO CHART I)
FIELD PONER SUPPLY
Chart 1, Field Power Supply Connections
UNIT VOLTAGE Hz
044
044, 054
044, 054, 064 460,575,380 60
064
LEGEND
C — Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive Engineers
NOTES;
1 The approximate operating weight of the unit is:
-------------- --------------------------------- 1478 kg
38AH-044—
38AH-044-C
38AH-054— 3309 lb
38AH-054-C
38AH-064— 3565 lb
38AH-064-C
2 Unit must have clearances for airflow as fo lows:
Top — Do not restrict in any way
Ends — 5 ft [1524 mm]
Sides — 6 ft [1829 mm]
3 Mounting holes may be used to mount unit to concrete pad They are not recommended for mounting
unit to spring isolators If spring isolators are used, a perimeter support channel between the unit and
the isolators is recommended
4 One 35/s" (92 mm) diameter hole is recommended for single-entry power on size 064 (208/230-v) units
5. See Table 1 for rigging center of gravity (Dimensions X,Y) See Table 2A and 2B for A-D corner weights
6 Circled numerals in Top View refer to condenser fans by position
230
208/230 60
346, 380/415
208/230 60 2Va [63]
346, 380/415
DIAMETER — in. [mm]
50
50 2V2 [63]
50 3% [92]
3259 lb
3547 lb
3597 lb
3998 lb
3% [92]
3% [92]
2Va [63]
1609 kg
1501 kg
1632 kg
1617 kg
[1813 kg
QTY
1
1
1
1
2
1
Fig. 1 — Dimensions — Units 38AH044,054,064
f
SUCTION
CONNECTION(S)
LIQUID
CONNECTION(S)
SUCTION C
LIQUID D
SUCTION (Ckt A) 1'-7i3/i6" [503mm]
SUCTION (Ckt B)
LIQUID (Ckt A)
LIQUID (Ckt B)
DUAL CKT
2Vs'' Dia [54 mm] 2¥8" Dia [67 mm]
%" Dia [22 mm]
2'-iyi6" [627mm] 1'-10¥i6" [567mm]
r-IOVie" [561mm]
2'-¥e" [626mm]
2'-5¥4" [756mm]
2'-10¥e" [879mm]
SINGLE CKT
IVs" Dia [29 mm]
1'-10¥i6" [567mm]
2'-¥8" [626mm]
—
2'-10¥b" [879mm]
—
I I
RELIEF VALVES LOCATED ON
THE COMPRESSORS ARE EQUIPPED
WITH A 3/B' SAE FLARE FOR
FIELD CONNECTION
SCALE 1,8
CONTROL BOX
END
TOP VIEW
10'-3 1/4
[313lM]
06) MTG HOLES
17/32' DIA
nam]
LEFT-END VIEW
Chart 1, Field Power Supply Connections
UNIT
074
074, 084
084
VOLTAGE
208/230 60
460
346, 380/415
380 60
575
208/230 60
460 60 3¥a [92]
DIAMETER — in. [mm]
Hz
60
50
60
2V2 [63]
2Vs [63]
3% [92] 1
3¥s [92]
2Va [63]
3¥e [92]
QTY
2
1
1
1
2
1
LEGEND
C — Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive Engineers
NOTES:
1 The approximate operating weight of the unit is:
38AH-074— 3812 lb (1729 kg)
38AH-074-C 4229 lb (1918 kg)
38AH-084— 4057 lb (1840 kg)
38AH-084-C 4735 lb (2148 kg)
2 Unit must have clearances for airflow as follows:
Top — Do not restrict in any way
Ends — 5 ft [1524 mm]
Sides — 6 ft [1829 mm]
3 Mounting holes may be used to mount unit to concrete pad They are not recommended for mount
ing unit to spring isolators If spring isolators are used, a perimeter support channel between the
unit and the isolators is recommended
4 See Table 1 for rigging center of gravity (Dimensions X,Y) See Table 2A and 2B for A-D corner
weights
5 Circled numerals in Top View refer to condenser fans by position
Fig. 2 — Dimensions — Units 38AH074,084
-r-B 3/4'
1528»] .
HTG HOLES
— J0'-3'—
(3I25IM]
BASE OVERALL
SIDE VIEW
7'-1 1/2
(2)72«nl
RIG HOLES
r-8 3/4-
t528m]
HTG HOLES
C4) RIO HOLES
-2 5/8' DIA
(67»1
-r-6 3/4
1476»]
RIG HOLES
-r-3/4
(323»1
HTG HOLES
ooooooO O O O O
o OOOO
VIEW 5-5
TOP VIEW OF CONTROL BOX SHELF
WITH FIELD POWER SUPPLY CONNECTIONS
RELIEF VALVES LOCATED ON
COMPRESSORS A2 AND B1 ARE EQUIPPED
WITH A 3/8' SAE FLARE FOR
FIELD CONNECTION
SCALE 1:8
7'-11 9/16'
[2‘128mmD
Chart 1, Field Power Supply Connections
UNIT
38AH
094
VOLTAGE
208/230 60
460, 575,
380
346, 380/415 50
Hz DIAMETER — in. (mm)
60
3% (92)
3% (92)
3 5 / 8 (92)
(8) MTG HOLES
7/32' DIA
LEGEND
QUANTITY
2
1
1
C — Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive Engineers
NOTES:
1 The approximate operating weight of the unit is:
38AH-094— 5088 lb (2308 kg)
38AH-094-C 5813 lb (2637 kg)
2 Unit must have clearances for airflow as follows:
Top — Do not restrict in any way
Ends — 5 ft [1524 mm]
Sides — 6 ft [1829 mm]
3 Mounting holes may be used to mount unit to concrete pad They are not
recommended for mounting unit to spring isolators
4 Two 3%" (92-mm) dia holes are recommended for parallel conductors on
208/230 V units.
5. Circled numerals in Top View refer to condenser fans by position
6 If spring isolators are used, a perimeter support channel between the unit
and the isolators is recommended
7. See Table 1 for rigging center of gravity (Dimensions X,Y) See Table 2A
and 2B for A-D corner weights
Fig. 3 — Dimensions — Unit 38AH094
-7 -4 11/16'-
[2252m(T)
HTG HOLES
-7'-7 11/16'-
C2326n<r[i}
BASE OVERALL
RIGHT-END VIEW
ooooO O O O O
oooo
VIEW 5-5
TOP VIEW OF CONTROL BOX SHELF
WITH FIELD POWER SUPPLY CONNECTIONS
4 5/8'
ni7mml
RELIEF VALVES LOCATED ON
COMPRESSORS A2 AND B2 ARE EQUIPPED
WITH A 3/8' SAE FLARE FOR
FIELD CONNECTION
SCALE 1:8
CONTROL
BOX END
(8) MTG HOLES
17/32' DIA
C13tnmJ
HINGED ACCESS
PANEL
(CONTROL SIDE)
-7 -4 11/16
-7 -7 11/16'
LEFT-END VIEW
HINGED ACCESS
t2252mm)
MTG HOLES
[2328mm]
BASE OVERALL
PANEL
(POWER SIDE)
---------
---------
?'-ll 9/16'
(2428mm]
-1 1/2
[38mm]
MTG HOLES
-3 7/16
C392mm]
MTG HOLES
Chart 1, Field Power Supply Connections
UNIT
38AH
104
VOLTAGE Hz
208/230
460, 575,
380
346, 380/415 50
DIAMETER — in. (mm) QUANTITY
60
60
3% (92) 2
3% (92) 1
3 5 /e (92)
Fig. 4 — Dimensions — Unit 38AH104
(4) RIG HOLES
2 5/8' DIA
[67mm]
2 -3 11/16'
[703 mm]-
RIG HOLES
[764mm] CKT A
2 -10'-
[8S7mir] CKT B
RIGHT-END VIEW
LEGEND
C — Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive Engineers
NOTES;
1 The approximate operating weight of the unit is:
38AH-104— 5435 lb (2465 kg)
1
38AH-104-C 6160 lb (2794 kg)
2 Unit must have clearances for airflow as follows:
Top — Do not restrict in any way
Ends — 5 ft [1524 mm]
Sides —6 ft [1829 mm]
3 Mounting holes may be used to mount unit to concrete pad They are not
recommended for mounting unit to spring isolators
4 Two 3%" (92-mm) dia holes are recommended for parallel conductors on
208/230 V units
5 Circled numerals in Top View refer to condenser fans by position
6. If spring isolators are used, a perimeter support channel between the unit
and the isolators is recommended
7 See Table 1 for rigging center of gravity (Dimensions X,Y) See Table 2A
and 2B for A-D corner weights
-7 -4 11/16'[2253mra]
ooooO о о о о
оооо
TOP VIEW OF CONTROL BOX SHELF
WITH FIELD POWER SUPPLY CONNECTIONS
VIEW 5-S
SCALE UlO
RELIEF VALVES LOCATED ON
THE COMPRESSORS ARE EQUIPPED
WITH A 3/8' SAE FLARE FOR
FIELD CONNECTION
SCALE 1:8
(32) MTG HOLES
17/32' DIA.
[13mm]
1 1/2-*
C38imn]
MTG HOLES
1'-4 7/8'—
C420n""l 1 r 1 /-)"
MTG HOLES' 1X4
I HINGED ACCESS
(CONTROL SIDE)
' s|
MTG HOLES ' -4 3/4-
[425mir)
i
I PANEL '
TYPICAL
BOTH ENDS
MTG HOLES
HINGED ACCESS
■ PANEL
(POWER SIDE)
7'-4 1/2'-
f2247ti.ml
BASE OVERALL
LEFT-END VIEW
TYPICAL
BOTH ENDS
is
1 ' c- 1 /-)' (‘>28nim]
-1 -5 1/2 MTG HOLES
[444tntnD
MTG HOLES
-1 -4 7/8
Chart 1, Field Power Supply Connections
UNIT
38AH
VOLTAGE
208/230 60
124A
124B
460, 575,
380
346, 380/415 50
LEGEND
C — Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive Engineers
Hz
60
DIAMETER
(in.)
3% (92)
2V2 (63)
3% (92)
r-3/4'
[323mm] *
MTG HOLES
- 18'-6 3/8'-
SIDE VIEW
QUANTITY
1
1
1
CSGSOmm]
BASE OVERALL
NOTES;
1
The approximate operating weight of the unit is:
38AH-124— 7260 lb (3293 kg)
38AH-124-C 8126 lb (3686 kg)
Unit must have clearances for airflow as follows:
Top — Do not restrict in any way
Ends — 5 ft [1524 mm]
Sides — 6 ft [1829 mm]
Mounting holes may be used to mount unit to concrete pad They are not rec
ommended for mounting unit to spring isolators
One 3¥s" (92-mm) dia hole is recommended for single-entry power into each
module (124A and 124B) of the 208/230-v units
Circled numerals in Top View refer to condenser fans by position
If spring isolators are used, a perimeter support channel between the unit and
the isolators is recommended Do not support each module separately
Each module of the unit must be rigged into position separately The unit must
not be rigged after modules have been connected.
8.
Suction and liquid connections can exit on either side of the unit.
9.
Field power supply connections are required for each module
10
See Table 1 for rigging center of gravity (Dimensions K.L.X.Y) See Table 2A
and 2B for A-D corner weights
Fig. 5 — Dimensions — Unit 38AH124
8
t2 -3 11/16
^1 1/2 [703mmT
^ [ЗВтт] RIG HOLES
MTG HOLES
•- 1 '-3/4'
C323mroJ
MTG HOLES
J HINGED ACCESS
'Г
VIEW S-5
TOP VIEW OF CONTROL BOX SHELF
WITH FIELD POWER SUPPLY CONNECTIONS
SCALE 1:10
(32) MT6 HOLES
17/32' DIA.
[13mtn]
\ PANEL '
(CONTROL SIDE)
, 1 TYPICAL
•1 BOTH ENOS
HINGED ACCESS ,
> PANEL
(POWER SIDE)
TYPICAL
BOTH ENDS
■ Isl"
RELIEF VALVES LOCATED ON
THE COMPRESSORS ARE EQUIPPED
WITH A 3/8' 5AE FLARE FOR
FIELD CONNECTION
-1 -4 7/8'
1 c- 1 /'i' (42ВямпЗ
I -b I/2 MTG HOLES
НТО HOLES
Chart 1, Field Power Supply Connections
UNIT
38AH
VOLTAGE
208/230
134A
460, 575, 380 60
346, 380/415
208/230 60
134B
460, 575 60
380
346, 380/415
LEGEND
C — Copper Fin Coils
MTG — Mounting
SAE — Society of Automotive Engineers
Hz
60
50
60 ЗУв (92)
50
DIAMETER —
in. (mm)
ЗУ8 (92) 1
2Уг (63)
ЗУв (92) 1
2Vi (63)
2Уг (63) 1
ЗУв (92) 1
Fig. 6 — Dimensions — Unit 38AH134
QUANTITY
1
2
1
I -3/4'
СЭ23вя|]
ИТ6 HOLES
[6253inm]
BASE OVERALL
-20'-6 1/8'-
NOTES;
The approximate operating weight of the unit is;
1
38AH-134— 7507 ib (3405 kg)
38AH-134-C 8357 ib (3791 kg)
Unit must have ciearances for airfiow as foliows;
Top — Do not restrict in any way
Ends — 5 ft [1524 mm]
Sides — 6 ft [1829 mm]
Mounting hoies may be used to mount unit to concrete pad They are not
recommended for mounting unit to spring isoiators.
One ЗУа" (92-mm) dia hoie is recommended for single-entry power into
Module 134A and 208/230-v units Single entry power into Module 134B is
not recommended
Circled numerals in Top View refer to condenser fans by position
If spring isolators are used, a perimeter support channel between the as
sembled unit and the isolators is recommended Do not support each mod
ule separately
Each module of the unit must be rigged into position separately. The unit
must not be rigged after modules have been connected.
Suction and liquid connections can exit on either side of the unit
8
Field power supply connections are required for each module
9
See Table 1A or 1В for rigging center of gravity (Dimensions K,L,X,Y). See
10
Table 2A and 2B for A-D corner weights.
Table ЗА — Units 38AH044-084 Physical Data — 50/60 Hz (English)
38AH
OPERATING WEIGHT WITH Cu-AI
REFRIGERANT (Approx) — Lb Cu-Cu
SHIP WEIGHT WITH COIL PROTECTION ONLY
(Approx) — Lb Cu-AI
TYPICAL OPERATING REFRIGERANT
Charge (Approx) — Lb
Qty of Circuits Std
COMPRESSOR Type...Rpm
(Qty Cylinder) Compressor*
Model No. 06E
(Qty Cylinder) Compressor*
Model No. 06E
Oil Charge (Pt)
Capacity Control Stepsf
CONDENSER FANS (6 Blade) — 60 Hz
Qty...Dla (In.)
Ainlow (Cfm)
Speed (Rpm)
Total Power (kW)
CONDENSER FANS (6 Blade) -
Qty...Dia (in.)
Airflow (Cfm)
Speed (Rpm)
Total Power (kW)
CONDENSER COIL
Rows...Fins per in.
Face Area (sq ft)
Storage Capacity (Lb per Circuit) at 120 F
CONNECTIONS
Suction, ODF (in.)**
Liquid, ODF (in.)**
Hot Gas Bypass, ODF (in.)
■50 Hz
044
3259
3547
3250
Cu-Cu
Opt
Std
Std 250 250
Opt (4)A1 (4) A2
Opt 250 250
Std 17 17
Opt 17 17
3538
62
2
1
(4)A1
2...17 2...17 3...17
80.5
35
Reciprocating Semi-Hermetic
(4) B1
(4) A1 (6) B1 (6) A1
250
(6) A1 (4) A2
265
17
21
054
3309
3597
3290
3578
72
2
1
265 265
250 275
21
17 21 21
4. .30
35,000
1140
6.2
4. ,30
35,000
950
62
Enhanced Copper Tubes, Aluminum Lanced Fin
80.5 80.5
35 55
064
3565
3998
3530
3963
R-22
88
2
1
1750 @ 60 Hz; 1458 @ 50 Hz
(6) B1 (6) A1 (6) B1
2Va
275
(6) A2
265
21
%
¥e
(6) A1
21
275 299
(6) A1 (6) A2
299 275
21 19
19 21
074
3812
4229
3780
4197
104
2
1
52,000
52,000 I 51,000
2...19
116.7
6 .30
55
1140
93
6 .30
950
93
I
(6)A1
299
(6)A1
299
19
19
084
4057
4735
4000
4678
130
2
1
51,000
3 .17
1167
80
(6) B1
299
(6) A2
299
19
19
Table 3B — Units 38AH044-084 Physical Data — 50/60 Hz (SI)
38AH
OPERATING WEIGHT WITH
REFRIGERANT (Approx) — Kg
SHIP WEIGHT WITH COIL PROTECTION ONLY
(Approx) — Kg
TYPICAL OPERATING REFRIGERANT
CHARGE (Approx) — Kg
Qty of Circuits
COMPRESSOR Type...R/s
(Qty Cylinder) Compressor*
Model No. 06E
(Qty) Cylinder) Compressor*
Model No. 06E
Oil Charge (L)
Capacity Control Stepsf
CONDENSER FANS (6 Blade) — 50 Hz
Qty...Dia (mm)
Airflow (L/s)
Speed (R/s)
Total Power (kW)
CONDENSER FANS (6 Blade) — 60 Hz
Qty...Dia (mm)
Airflow (L/s)
Speed (R/s)
Total Power (kW)
CONDENSER COIL
Rows...Fins per m
Face Area (sq m)
Storage Capacity (Kg per Circuit) at 48.9 C
CONNECTIONS
Suction, ODF (in.)**
Liquid, ODF (in.)**
Hot Gas Bypass, ODF (in.)
Cu-AI — Copper tubes with aluminum fins
Cu-Cu — Copper tubes with copper fins
ODF — Outside Diameter, Female
Opt — Optional Single-Circuit Units
Std — Standard Dual-Circuit Units
•Compressor A1 is lead on standard and optional single-circuit units
tCapacity control steps listed are for constant-volume units with no accesso
ries Refer to Table 19A or 19B, page 46, for additional system capacity
information
LEGEND
Cu-AI
Cu-Cu
Cu-AI
Cu-Cu
Std
Opt
(4) A1 (4)B1 (4) A1
Std
250
Std
(4)A1 (4) A2 (6) A1 (4) A2 (6) A1
Opt
Opt 250 250
Std 8 0 80
Opt 80 80
044 054
1478 1501
1609
1474 1492 1601 1715
1605
28 1 32 7 39 9
2 2
250
2..
669
7.48
16 16 25 25
1632 1813
1623 1798 1904
1 1
Reciprocating Semi-Hermetic 29.2 @ 60 Hz; 24.3 @ 50 Hz
(6) B1
250 265 265 275
265 250 275 265
80
99
9 9
80
4.. 762 6 762
16 500
15.8
62 93
4..
762
16 500
19.0 19.0
62 93
Enhanced Copper Tubes, Aiuminum Lanced Fin
2.. 669 3,. 669
7.48 7.48 10 84
**For single-circuit units, suction ODF is 2% in. (66 7 mm) and liquid ODF is
IVs in (28.6 mm) Single circuits have a factory-installed manifold; no
field modification is required.
NOTES:
1 Certified dimensional drawings available on request
2 Equivalent connection values in mm are as follows;
in.
% 15.9
%
2Ув 54 0
064
1617 1729 1840
R-22
2 2 2
(6) A1
(6) B1
(6) A2 (6)A1 (6) A2 (6)A1 (6) A2
9 9 99 99
9.9 99 90
Z
;
2Va
Ve
%
mm
22 2
1918
(6) A1
275
299
24 500
24 500
2 ..782 3...669
299
299 299
762
084
2148
1814
2122
24 100
24 100
10 84
36
074
47 2 58 9
1 1
(6) B1 (6) A1 (6) B1
299
275
90 9.0 90
99 90 90
15.8
6.
299
10
Table 4A — Units 38AH094-134 Physical Data — 50/60 Hz (English)
38AH
OPERATING WEIGHT WITH Cu-AI 5088
REFRIGERANT (Approx) — Lb Cu-Cu 5813
SHIP WEIGHT WITH
COIL PROTECTION AND SKID
(Approx) — Lb
TYPICAL OPERATING
REFRIGERANT CHARGE
(Approx) — Lb
Qty of Circuits
COMPRESSOR Type...Rpm
(Qty Cylinder) Compressorf
Model No. 06E
Oil Charge (Pt)
Capacity Control Steps**
CONDENSER FANS (6 Blade) — 60 Hz
Qty...Dia (in.)
Airfiow (Cfm)
Speed (Rpm)
Totai Power (kW)
CONDENSER FANS (6 Biade) — 50 Hz
Qty...Dia (in.)
Airfiow (Cfm)
Speed (Rpm)
Totai Power (kW)
CONDENSER COIL
Rows...Fins per in.
Face Area (sq ft)
Storage Capacity
(Lb per circuit) at 120 F
CONNECTiONS
Suction, ODF (in.)
Liquid, ODF (in.) % % 1Ув
Hot Gas Bypass, ODF (in.) Ys
___________________
Cu-AI
Cu-Cu 6355
094
5630
148
2
(4)A2 (6)B1
(6)A1
-275 -250
21
-299
17 19
6. .30
52,000
1140
94
6. .30
52,000
950
94
3...17
128 3
178
2Ve 2Ve
104
5435
6160
5990
6715
R-22
135
Reciprocating Semi-Hermetic. 1750 @ 60 Hz; 1460 @ 50 Hz
(6)A1
-265
21
2
M)A2
{6)B1
-250
-265
17 21
6. .30
52,000
1140
95
6...30
52,000
950
95
Enhanced Copper Tubes, Aluminum Lanced Fin
3...17
128 3
178
Ya Ye Ya Ye
(6)B2
-265
21
(6)A1
-275
124 134
124A 124B 134A 134B
3630*
4063*
3907* 3907* 3907*
4340* 4340* 4340*
88
1
(6)A2
-265
21
21
4, .30
35,000
1140
64
4, .30
35,000
950
64
'3...17
80 5
110
2% 2Ye
(6)A1
-275
21
3630*
4063*
88
1
4. .30
35,000
1140
64
4. .30
35,000
950
64
3...17
80 5
110
V/a
(6)A2
-265
21
3630*
4063* 4294*
88
1
(6)A2
(6)A1
-265
-275
21
21
4. .30
35,000
1140
64
4. .30
35,000
950
64
3...17
80 5
110
2У8 2Ye
1У8 1Ve
(6)A1
-299
3877*
4080*
4497*
19
6. .30
52,000
6. .30
52,000
2 .19
104
1
1140
92
950
92
1167
110
Ye
(6)A2
-275
21
Table 4B — Units 38AH094-134 Physical Data — 50/60 Hz (SI)
38AH 094 104
OPERATING WEIGHT WITH
REFRIGERANT (Approx) — Kg
SHIP WEIGHT WITH Cu-AI 2554 2717 1860*
COIL PROTECTION AND SKID
(Approx) — Kg
TYPICAL OPERATING
REFRIGERANT CHARGE
(Approx) — Kg
Qty of Circuits
COMPRESSOR Type...R/s
(Qty Cyiiner) Compressorf
Modei No. 06E
Oii Charge (L)
Capacity Controi Steps**
CONDENSER FANS (6 Blade) — 60 Hz
Qty...Dia (mm)
Airflow (L/s)
Speed (R/s)
Total Power (kW)
CONDENSER FANS (6 Blade) — 50 Hz
Qty...Dia (mm)
Airflow (L/s)
Speed (R/s)
Total Power (kW)
CONDENSER COIL
Rows...Fins per m
Face Area (sq m)
Storage Capacity
(Kg per circuit) at 49 C
CONNECTIONS
Suction, ODF (in.)
Liquid, ODF (in.)
Hot Gas Bypass, ODF (in.)
LEGEND
Cu-AI — Copper Tubes with Aluminum Fins
Cu-Cu — Copper Tubes with Copper Fins
ODF — Outside Diameter, Female
'Includes piping and trim kit
fCompressors are shipped with minimum oil charge.
•'Capacity control steps listed are for constant volume units with no accesso
ries Refer to Table 20, page 46, for additional system capacity information
Cu-AI
Cu-Cu 2637 2794 1843* 1843* 1843* 1948*
Cu-Cu 2883
2308 2465
3046
67 1
2
(6)A1
-275
10
(6)B1
(4)A2
-250
8
5
6.762
24 544
19
94
6.762
24 544
158
94
3 .669 3 3. .669 3 3 669.3 3 669 3 3 .669 3
11 9 11 9
81
2Ув 2Уа
%
%
-299
(6)A1
-265
9
10
61 2
2
Reciprocating Semi-Hermetic.. 29 2 @ 60 Hz; 24 3 @ 50 Hz
(4)A2
-250
8
6.762
24 544
19
95
6.762
24 544
15.8
95
Enhanced Copper Tubes, Aluminum Lanced Ein
81
Va 1У8 V/a V/a
Ya
(6)B2
(6)B1
-265
-265
10
10
NOTES:
1 Unit 38AH124 consists of one 124A module and one 124B module Unit
38AH134 consists of one 134A module and one 134B module
2 Certified dimensional drawings available on request
3 Equivalent connection values in mm are as follows:
124A
1647*
1968*
R-22
39.9
(6)A1
-275
10
4.. 762
16 520
4.. 762
16 520
in. mm
Ya 15.9
Va
1У8
2Ув 54 0
2Ya 66 7
124 134
124B 134A 134B
1647* 1647* 1759*
1860* 1860* 1851*
1968* 1968* 1968*
1
(6)A2
-265
10
19
64
15 8
64
75
50
2% 2Ya 2Ya
Ya
22 2
28 6
39 9
1
(6)A1
(6)A2
-265
-275
10
10
4.. 762
16 520
19
64
4...762
16 520
158
64
75 75
50 50
% Ya
(6)A1
-275
10
39 9
4.. 762
16 520
4.. 762
16 520
1
19
64
158
64
(6)A2
-265
10
(6)A1
-299
9
47 2
1
(6)A2
-275
6.762
24 544
19
92
6 ..762
24 544
15.8
92
2 .781 6
10 8
50
2%
1Ve
Ye
10
11
Fig. 7 — Modules 38AH124A or 134A — Shipping Locations of Piping and Sheet Metal Trim Kit
%
CONTROL
BOX
12
Step 3 — Make Refrigerant Piping Connections
A CAUTION
The field-supplied liquid line solenoid valve must be in
stalled at the evaporator to avoid possible compressor
damage during unit operation. See Fig. 11 (for 38AH044084 dual-circuit and 38AH094-134 units), or Fig. 12 (for
38AH044-084 optional single-circuit units).
The units have large suction lines to minimize friction losses.
The units also have the ability to operate at low capacity.
Because of these capabilities, use special care with suction
piping and suction risers to ensure proper compressor oil
return under all operating conditions. Maximum allowable
vertical separation between the condensing unit and the evapo
rator is shown in Table 5. Size suction lines in accordance
with Tables 6A or 6B through 9A or 9B and Fig. 13. Mount
liquid line solenoid valve just ahead of the TXVs (thermo
static expansion valves) which will be mounted at the
evaporator. See Fig. 11 (for 38AH044-084 dual-circuit and
38AH094-134 units) or Fig. 12 (for 38AH044-084 optional
single-circuit units).
Fig. 9 — Typical Module with Cover Panels
Removed
38AH044-084,124,134
SHIPMENT BOLTS
MOUNTING SPRINGS
38AH094,104
SHIPMENT BOLTS
13
To achieve good mixing of the refrigerant leaving the evapo
rator suction header for proper sensing by the TXV bulb:
1. Install a minimum of two 90-degree elbows upstream of
the TXV bulb location. See Fig. 14 (for 38AH044-084
dual-circuit and 38AH094-134 units) or Fig. 15 (for
38AH044-084 optional single-circuit units).
2. Locate the TXV bulb on a vertical riser, where possible.
If a horizontal location is necessary, secure the bulb at
approximately the 4 o’clock position.
3. Size the suction line from the evaporator to the common
suction line to achieve high refrigerant velocity. See
Tables 6A or 6B through 9A or 9B and Fig. 13.
If an oil return connection at the bottom of the suction
header is supplied with an evaporator, tee-in this connection
ahead of first mixing elbow. See Fig. 14 (for 38AH044-084
dual-circuit and 38AH094-134 units) or Fig. 15 (for 38AH044084 optional single-circuit units). When the compressor is
below the evaporator, the riser at the evaporator should ex
tend to the top of the evaporator section. After the riser is
installed, the suction line can elbow down immediately.
Install a field-supplied filter drier and sight glasses in each
refrigerant system. Select the filter drier for maximum unit
capacity and minimum pressure drop. Figure 11 (for 38AH044084 dual-circuit and 38AH094-134 units) or Fig. 12 (for
38AH044-084 optional single-circuit units) shows required
location of solenoid valves and recommended locations for
the filter driers and sight glasses. Complete the refrigerant
piping from the evaporator to the condenser before opening
the liquid and suction lines at the condenser.
Table 5 — Liquid Lift
UNIT 38AH 60 Hz
044 69
054
064 75 23 0
074 45
084 75 23 0
094
104 50 152
124 75 23 0
134 45 137
Ft
75 23 0
55
MAXIMUM LIQUID LIFT
M
21 0
137
167
50 Hz
Ft M
57 5
75 0 23 0
65 0 19 8
37 5
75 0 23 0
46 0
42 0 128
65 0
37 5 11 4
175
11 4
140
19.8
UNITS 38AH044-084 — Relieve the pressure caused by the
holding charge into a refrigerant recovery system. Uneap the
suction line and cut the run-around tube at the liquid line
as close to the loop elbow as possible. This will leave ap
proximately 2 , in. (50 mm) of straight tube for liquid line
connection.
IMPORTANT: Protect the liquid valves from the heat
of brazing.
Leak test the entire system by using soap bubbles and
nitrogen or R-22 with an eleetronic leak detector.
Purge nitrogen or reclaim R-22 from system after comple
tion of leak-checking procedure. Repair leak if one is found.
When finished, evacuate and dehydrate system using the meth
ods described in Carrier GTACII (General Training Air Con
ditioning II), Module 4, System Dehydration.
UNITS 38AH094-I34 — Relieve the R-22 holding charge
of each circuit into a refrigerant recovery system. Remove
the liquid line to factory-installed suction line loop by cut
ting the loop at the liquid valve. (See diagram below and
Fig. 9.) Cut as close to the 90-degree bend in the loop as
possible. The remaining tube piece in the valve will be used
for brazing the liquid line. Unbraze and remove the cap from
the liquid line. For 38AH094 and 104 units, sweat-connect
the liquid and suction lines from the evaporator. For 38AH124
and 134 units, see Piping Kit Connections on page 21.
TOP VIEW
FACTORY-INSTALLED
SUCTION
LINE
SUCTION LINE LOOP
1
---
r _ r LINE
~-r . -I-
-CUT LINE
LIQUID
TXV
LOCATION A
LEGEND
LLS — Liquid Line Solenoid
TXV — Thermostatic Expansion Valve
Fig. 11 — Required Location of Soienoid Valves and Recommended Filter Drier and Sight Glass Locations for
38AH044-084 Dual-Circuit and 38AH094-134 Units.
14
OPTION B
DUAL FILTER
DRIER ARRANGEMENT
DRIER
SIGHT GLASS
THERMOSTATIC
EXPANSION VALVES
THERMOSTATIC
EXPANSION
VALVES
SIGHT GLASS
LOCATION A
SIGHT GLASS
LOCATION B
Fig. 12 — Required Location of Soienoid Vaives and Recommended Fiiter Drier and
Sight Giass Locations for 38AH044-084 Optionai Single-Circuit Units
u
■ CONDENSING
1—UNIT
3 FT MAX (914 mm)
\
-------
\
LEGEND
A — Pipe A, Suction Riser, without Trap
B — Pipe B, Suction Riser with Trap
C — Suction Line to Condensing Unit
D — Pipe D, Suction Riser Short Lift
RED. — Reducer
STR — Street
NOTES1 Short riser, pipe D, is used when routing suction iine to condens
ing unit connection See table at right
2. See Tables 7A, 7B, 9A, and 9B for values of A, B, and C.
Fig. 13 — Double Suction Riser Construction
PIPE D DIAMETER
UNIT
38AH
044
054 1%
064 1% 41 21/8 54
074
084 21/8
094, 104 21/8
124, 134 2% 67 2% 67 — —
‘Maximum iength of riser is 3 ft (914 mm).
tDouble suction riser required if accessory
instaiied
Dual Circuit*
A
mm in. mm in. mm
in.
1% 41 1% 41 21/8 54
41 1% 41 21/8 54
21/0 54 21/8 54 21/8 54
54 21/8 54
54
B
21/8 54
15
Singie Circuit*
21/a 54
2%t 67t
— —
unioader is fieid
Table 6A — Refrigerant Piping Requirements — 38AH044-104 Dual-Circuit Units — 60 Hz
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE — FT (M)
UNIT 38AH
044
054
064
074
084
094
104
Ckt A
Ckt В %
Ckt A
Ckt В У8 1%
Ckt A
Ckt В % 2Ve
Ckt A
Ckt В
Ckt A
Ckt В V8 2Уа
Ckt A
Ckt В % 2Ve
Ckt A
Ckt В
LEGEND
CV — Constant Volume
L — Liquid Line
S — Suction Line
VAV — Variable Air Voiume
‘Double suction riser required on units with field installed unloader
on circuit В compressor if condensing unit is elevated above
evaporator.
tDouble suction riser required on units with field installed unloader
on circuit В compressor if condensing unit is elevated above
evaporator.
“Double suction riser required on all unit configurations if condens
ing unit is elevated above evaporator.
NOTES:
1. Addition of 2 unloaders to circuit В compressor is not
recommended
2 38AH094 and 38AH104 piping sizes apply only to factory sup
plied unit configurations They do NOT take into account any field
installed unloaders
3 Piping sizes are based on unit operation above 40 F (4 4 C) satu
rated suction temperature (SST) When operating below 40 F
(4 4 C), refer to Carrier System Design Manuai, E20-IÌ piping de
sign program, or ASHRAE Handbook to select proper line sizes
4 Pipe sizes are based on the total linear length shown for each
column, plus a 50% allowance for fittings.
15-25 25-50
(4.6-7.6) (7.6-15.2)
L s
%
%
%
%
%
%
%
%
%
1% У8 1У8 Ув
1% У8 1% Ув
1% У8 1% Ув
1% У8 2Ув Ув
2Ve У8 2Уа Ув
2V8 1У8 2У8 1У8 2Ув
2V8 1Ув 2Ув 1Уе 2Ув
2V8 1Уб 2Уа 1 Ve
2Ув 1У8 2Ув 1Ув
2Ув
L
У8 2У8 Ув 2Ув
У8 2Ув Ув 2Ув 1Ув
1У8 2Ув 1Ув 2Ув
Ув 2У8 V/a 2Ув
1Уб 2Ув 1Ув 2Уе
(15.2-22.9) (22.9-30.5)
S
L S
50-75 75-100
L S L
2Ув Уе 2Уе
2Ув Ув 2Ув
2Ув Va 2Ув
2Ув Уе 2Ув
2Ув 1Ув 2Ув
2%t
2%t
1Ув 2Ув
1Ув
1У8
1Ув
1Ув
1Ув
1Уз
1Ув
5 Suction and liquid line sizing is based on pressure drop equivalent
to 2 F (1.1 C) at nominal rating conditions. Higher pressure drop
design criteria may allow selection of smaller pipe sizes, but at a
penalty of decreased system capacity and efficiency
6. Double suction risers may be required if condensing unit is el
evated above the evaporator See footnotes and double suction
riser table below
7 Refer to Carrier System Design Manual or to E20-II design
programs for further information on selecting pipe sizes for split
systems
8. All pipe sizes are OD inches Equivalent sizes in millimeters
follow
100-150
(30.5-45.7)
Уе 2Ув
Va
Va 2Ув Va
1Ув
2Ув
2% 1Ув
2%t
2% 1У8
2%t
2%
2%t
2%
1Уе 2Ув
1У8
1Ув
1%
1%
1Уа 2%
1Ув
1% ЗУв“
in. mm
% 15.9
Уе 22.2
v/a
V/a 34 9
V/a
2Уа
2%
ЗУв
3%
S
2Уе
2Ув
2%
2%t
2%
2%
2%t
2%t
2%t
28.6
41 3
54 0
66 7
79 4
92 1
150-200
(45.7-61.0)
L
Va 2Ув
Va
1У8
1Ув
1У8
1У8
1%
1Ув
1Ув
1% ЗУв“
1Ув
1У8 ЗУв“
1У8
s
2Ув
2Ув
2%*
2%t
2%
2%t
2%
2%t
2%
2%
ЗУв“
Table 6B — Refrigerant Piping Requirements for Double Suction Risers,
38AH054-104 Duai-Circuit Units — 60 Hz
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE — FT (M)
UNIT 38АН
054
064
074
084
094
104
— — Not Required
Pipe A — Suction Riser Without Trap
Pipe B — Suction Riser With Trap
Pipe C — Suction Line to Condensing Unit
NOTES.
1 See Refrigerant Piping Requirements table at top of page to de
termine need for double suction risers.
2 Pipe sizes are based on the total linear length, shown for each
column, plus a 50% allowance for fittings.
Ckt А
Ckt В
Ckt A
Ckt В
Ckt A
Ckt В
Ckt A
Ckt В
Ckt A
Ckt В
Ckt A
Ckt В
LEGEND
1У8
1Ув
50-75 75-100 100-150
15.2-22.9) (22.9-30.5 30.5-45.7
A
_
_
_
_
—
В С
—
___
___
—
2Ув
2Ув
—
— —
—
— —
—
1Ув
2% V/a 2Ув 2% 1% 2Ув
2¥а V/a 2Ув 2% 1Ув 2Ув
—
А
—
В С
—
— —
___
2Уе
—
—
2% 1Уе 2Ув
— — —
150-200
(45.7-61.0
А В
С
А
В
С
—
___
___
1Ув 2Ув
1Ув 2%
Suction and liquid line sizing is based on pressure drop equivalent
to 2 F (1 1C) at nominal rating conditions Higher design pressure
drop criteria may allow selection of smaller pipe sizes but at a pen
alty of decreased system capacity and efficiency.
Refer to Carrier System Design Manual or to E20-II design
programs for further information on selecting pipe sizes for split
systems
All pipe sizes are OD inches. See Table 6A notes for metric
equivalents
Refer to Fig. 13 for double suction riser construction
___
—
___
2%
2%
2%
2%
ЗУв
V/a 2Ув
V/a
2Va
1Ув 2Уа
V/a 2Va
V/a
V/a 2%
V/a 2%
2%
2%
2%
2%
2%
ЗУв
ЗУв
ЗУв
16
Table 7A — Refrigerant Piping Requirements, 38AH044-104 Dual-Circuit Units — 50 Hz
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE — FT (M)
UNIT 15-25 25-50
38AH
(4.6-7.6) (7.6-15.2)
L S L S
044
054
064
074
084
094
104
CV — Constant Volume
L — Liquid Line
S — Suction Line
VAV — Variable Air Volume
’Double suction riser required on units with field installed unloader
on circuit B compressor if condensing unit is elevated above
evaporator.
TDouble suction riser required on units with field installed unloader
on circuit B compressor if condensing unit is elevated above
evaporator.
’’Double suction riser required on all unit configurations if condens
ing unit is elevated above evaporator
NOTES1 Addition of 2 unloaders to circuit B compressor is not
2. 38AH094 and 38AH104 piping sizes apply only to factory sup
i.
3 Piping sizes are based on unit operation above 40 F (4 4 C) satu
4 Pipe sizes are based on the total linear length shown for each
Ckt A % 1% % 1%
Ckt В
Ckt A %
Ckt В
Ckt A %
Ckt В
Ckt A % 1% Va
Ckt В
%
%
%
Ckt A %
Ckt В %
Ckt A
Ckt В
Ckt A
Ckt В %
LEGEND
recommended
plied unit configurations They do NOT take into account any field
installed unloaders
rated suction temperature (SST) When operating below 40 F
(4 4 C), refer to Carrier System Design Manual, E20-II piping de
sign program, or ASHRAE Handbook to select proper line sizes
column, plus a 50% allowance for fittings
1% % 1%
1%
Wa Va 1%
Wa
1% Va 2У8
Va 1%
Va
1%
2Уа
2Ув Va 2Уб 1У8
%
2Va
2Va
2Va
%
2Va % 2Уе 1У8 2У8
%
2Va Va 2Ув 1У8 2Уа
%
2Va 1У8 2Ув 1У8 2%
Va 2Ув 1У8
Va 2Ув 1Ув
IVe 2Ув ^ 1У8 2%”
50-75
(15.2-22.9)
L
%
Va
Va
Va
Va
Va
Va
s
1% %
1% Va
1%
2У8
2yst
2Ув
2Ув
2Ув
2Ув
2У8
5. Suction and liquid line sizing is based on pressure drop equivalent
6 Double suction risers may be required if condensing unit is el
7 Refer to Carrier System Design Manual or to E20-II design
8 All pipe sizes are OD inches Equivalent sizes in millimeters
75-100
(22.9-30.5)
L
Va
Va
Va
Va
Va
1У8
1У8
1Уа
1У8
1У8
1У8
1У8
to 2 F (1 1 C) at nominal rating conditions. Higher pressure drop
design criteria may allow selection of smaller pipe sizes, but at a
penalty of decreased system capacity and efficiency
evated above the evaporator See footnotes and double suction
riser table below
programs for further information on selecting pipe sizes for split
systems
follow
s
2У8
2У8
2Уб
2Уа
2Va\
2Va
2Va
2%
2%t
2%
2%”
2¥8*t
2%”
2Va
ЗУ8 79 4
ЗУ8
100-150 150-200
(30.5-45.7)
L s
Va 2Уе
Va 2Va
Va 2Va
^Va 2Va
V/a 2Va\
V/a 2%*
^Va
V/a 2% 1У8 2%
1У8
2%t
2Щ 1У8
1У8 2%
1У8
1У8
1У8 2У8**
1%
in.
Va
Va
V/a 28 6
V/a 34 9
V/a
2Va 54 0
2Va
2%” 1% ЗУв”
2%*t
2% 1% ЗУ8”
mm
159
22 2
41 3
66.7
92 1
(45.7-61.0)
L
Va 2У8
Va 2У8
Va 2У8
1У8
1У8 2%”
' 1У8
1У8
1У8
1У8
1%
s
2%*t
2%’
2%t
2%t
2%
2%’t
ЗУе”
Table 7B— Refrigerant Piping Requirements for Double Suction Risers,
38AH054-104 Dual-Circuit Units — 50 Hz
TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE — FT (M)
UNIT 50-75 75-100
38AH 15.2-22.9) (22.9-30.5)
A
054
064
074
084
094
104
— — Not Required
Pipe A — Suction Riser Without Trap
Pipe B — Suction Riser With Trap
Ckt A
Ckt В
Ckt A 1%
Ckt В
Ckt A
Ckt В
Ckt A
Ckt В
Ckt A
Ckt В
Ckt A
Ckt В
LEGEND
___
— —
___ ___
___
V/a
— —
— — —
—
Pipe C — Suction Line to Condensing Unit
NOTES:
1 See Refrigerant Piping Requirements table at top of page to de
termine need for double suction risers
2 Pipe sizes are based on the total linear length, shown for each
column, plus a 50% allowance for fittings.
В
C
—
___
V/a 2У8
___
2Vs
—
—
—
—
2% V/a 2Уз
—
—
A В
___
V/a
—
___
V/a 2У8
V/a
V/a 2Уе
—
V/a
— —
___
2Ув
— —
100-150
30.5-45.7) 45.7-61.0
С
___
2Ув
___
25/8
25/8
25/8
25/8
—
3.
4.
А В С А
— —
15/8 15/8
15/8
15/8
15/8
15/s
15/8
15/8
—
Suction and liquid line sizing is based on pressure drop equivalent
to 2 F (1 1C) at nominal rating conditions. Higher design pressure
drop criteria may allow selection of smaller pipe sizes but at a pen
alty of decreased system capacity and efficiency.
Refer to Carrier System Design Manual or to E20-II design
programs for further information on selecting pipe sizes for split
systems
All pipe sizes are OD inches. See Table 7A notes for metric
equivalents
Refer to Fig. 13 for double suction riser construction
2Уа
2Уа
2Уа
2Уа
2Уа
2Уа
— —
___
2У8 V/a
25/8
25/8
25/8
25/8
25/8
25/8
150-200
В
V/a
V/a
V/a
V/a
V/a
V/a
V/a
V/a
2Уа 25/8
2Уа
2Уа 25/8
2Уа
2Уа 25/8
25/8
2У8 25/8
25/8
25/8
С
25/8
25/8
ЗУз
ЗУб
ЗУ8
17
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