Carrier 38BA User Manual

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Number One
Air Conditioning

l\Mer

e

Division of Carrier Corporatio
Syracuse, New York

Packaged Direct-Expansion Air Handler

Air-Cooled Condensing Unit System

GENERAL

This publication contains application infor­

mation for Carrier 38AD, AE, BA, and GR con­
densing units used in split systems with 40RR
direct-expansion air handling units, including
system selection, performance data, combination
ratings, electrical and control data, and refrigerant
piping details.

■ SELECTION PROCEDURE (With Example)

I Given:

COOLING

Grand Total Load (Req’d TC) . . 600,000 Btuh
Sensible Load (Req’d SHC) . . . 430,000 Btuh
Temperature Air Entering

Condenser............................................... 95 F

Temperature Air Entering

Evaporator — edb...............................77 F db

Temperature Air Entering

Evaporator — ewb .......................... 64 F wb

Evaporator Air Quantity .................. 20,000 cfm
External Static Pressure.................. 1.12 in. wg
Length of Interconnecting

Refrigerant Piping (Estimate) ................. 90 ft

Electrical Power Source,

Volts/Phase/Hertz............................ 460/3/60

HEATING
Heating Load............................... 900,000 Btuh
Temperature Air Entering

Coil (edb) ................................................ 58 F

Steam Pressure...................................... 5 psig

II Select condensing unit/fan coil combination.

Enter the Systems Index at the desired cfm
(20,000). Select the condensing unit(s) and
fan-coil system that meets or exceeds the grand
total load (600,000 Btuh). In this example,
system no. 48 would be selected — two 38AD
024 and one 38AD016 condensing units and a
40RR054 fan-coil, yielding a nominal capacity
of 632,000 Btuh. To determine whether this
system will fully satisfy the cooling require­
ments, enter the combination ratings, system
no. 48, page 9, at 20,000 cfm and 95 F condenser
entering air temperature. By interpolation, at

© Carrier Corporation 1975

SYSTEMS INDEX

¡38

38

38

338

38

38

38

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в

38

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т

ШФ

Ш щ

CONDENSING

_UNIT(S)

GR006

ВА008
ВД009

___

ВА008
ВА009

AD012

AD012
AD014
AD016

AD012
AD014
AD016

AD024

ADO^g-

AD012 (2)
AD024
AD028

AD024
AD012 (2)
AD028
AD016 & AD012
AD034
AD016 (2)_

ADÔ28.............................
AD016 & AD012
AD034
AD016 (2)
AD024 & AD016
АЕ044

__

AD034
AD012 (3)
AD016 & AD024
AD016 & AD012 (2;
АЕ044
AD016 (2) & AD012
AD016 & AD028
AD016 & AD034
AD016 (3)
АЕ054

АЕ044
AD016 (2) & AD012

AD016 & AD034
AD016 (3)
AD024 & AD034
АЕ054
AD024 (2) & AD012
AD024 (2) & AD016
АЕ064

FAN

COIL

40

В А 009

40

RR 008

40

RR012

40

RR016

40

R R 024

40

RR026

40

R R 034

40

R R 044

40

R R 054

NOM
CFM

3.400
3.400

2,360*
3.000
3.000

j^OOO

4,5ÔÔ~
4.000
4.000

4/950*

6.000
6,000
6,000

8,000

10,000

12,000

16,000

20,000

ARI OR

NOM TC

-

88

100_

'""'бЗ*''"

87
98

110

О2Ф*t”^

144
157

166
181

216

196

238
238

279

252
300
300
325
335

312
313
342
359
393
422

378
392
429
434
451
479
502
498

510
524

" 4 8 I

512

537

557
579
567
590
632
638

EER*

6 T'

9 0
7 6

7 6”'
9 5

8 2

Tir

8

6

EER

— Energy Efficiency Ratio

ТС

— Total Capacity (1000 Btuh)

*ARI capacities, Energy Efficiency Ratios rated in accordance with

latest ARI Standard 210

tFor units operating at 208 v, deduct 1000 Btuh from capacity

rating

Form 38AD-5XA

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