Carrier 50BA User Manual

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Division of

Carrier Corporation

Carrier Parkway • Syracuse NY 13221

Single-Package Cooling Units

INSTALLATION

General — The 50BA,BB008 thru 024 are selfcontained units, assembled for vertical air dis­ charge, wired and piped at the factory.

The 50BA,BB028 thru 064 are self-contained units consisting of a base section, fan section, fan

FAK SECTiON

054 AND

064 ONLY

motor and fan drive package, each shipped sepa­ rately and field assembled. Base section is factorywired compressor/evaporator coil unit. Fan section mounts for vertical or horizontal air discharge.

Unit Support — Refer to Fig. 1 and Table 1 for unit weight and dimensions.

OUTSiOE AfR -j—

OPENING OR ALT£?i- i

NATE RETURN AIR ,

OPENING SEE 2-t

VIEWA-A

PLENUM \

ACCESSORY \

C'
(ALTERNATE-A,
[AIRDISCH
\. I SELECTOR
SEE NOTE 3
POWER OPENING
AND THERMOSTAT
CONN SEE NOTE 2
LIQUID LINE CONN.
FRONT OR SACK
(50SS064)
	V .	^-^FRONT
508A. 88016 TWRU 064	V-	OF
		^ UNIT
VIEW A-A

	L3"0tAM HOLE
SOSA CO(«»i^R	POWER SUPPLY
WATER INLET a	508A, 88008,0!2
OUTLET
INTERCHANGEABLE	ACCESS AREA

PANEL (CIS a 024 ONLY)

AIRFLOW

NOTES:

■ Certiiissci drawings avaiiabie on .’■equest 2. Sse Certified Prints for details.

3 508A,3S016and024 require accessory filler panel package when fan section is top mounted for norrjrontal discharge

UNIT i

008,012

016,024

028,034!

044

054

064

S08A,BBj

A 1

4—

0

6-

8

7 ~

9k i

1G-

6k

10-

6k y

1

6k

U—

B 1

2-

6V„

2-

5 %

2-

Ilk i

3-

1 v'/4

3-

Ok

3—

Ok

B>* ;

--

4-

4k

: 5~

4k

6-

A

6-

4 k

6-

4k

«/g

C’* 1

6-

5

6 —lok

i 8-

i

S-

!0

9-

9___

lO-

4-

I S-

7k ;

6-

3 k

7-

2 k

7 k

D ! 1- •J

2-

0

; 2- 0

2-

0

2-

0

3-

A

V/

E i 2-

c

3-

: 3-

0 i 2-

6

2-

6.

5-

w

F

i — 7 %

1_

/ ‘/is

1 7

8k ;

1-

sk

1-

Sk

I —

8k

C

1 - 5k

I-

5 k : : —

3k i

1 — sk

t

8k

—

H ?

-

T

4k

: i~

7k

2-

7k

1 -

5k

5 k

J j 0-

Tli-

r'V

iO-

2k i C—

'X

Q-

3

0-

3

V /s

K

'wr —

I -

7

i ; -

4

2-

2 k

1 -

1-

2 k

L 1

:

nk

: 0

4-

4-

Fk

2-

!0k

2k ;

3~

10

9

9

; V ~

M

2~

5k

)_

F'k

i2-

:k 1

'¿y'l

2-

2k

2-

6k

N

6- 3k

i 7— 4 k i 10- 0

10-

0

1Q-

0

‘With fan section relocated for horizontal discharge

Fig. 1 — Dimensions (ft—in.)

© Carrier Corporation 1977

Form 50BA-4SI

Table 1 — Physical Data

									BB		■				BB	BA		BB			BB	BA		BB
UNIT 50	BA	BB			BB	BA	BB	BA			BA	BB		BA					BA.
	008		012			016		024			028			034			044			0S4			064		t
OPER WEIGHT (lb)	770*	710*	950*		890*	1414*	1221*	1894-	1464*		2491	2327		2598	2430	3800		3100	4100	3300		4404	3550
OPER CHARGE (lb)									R efrigerant 22t
Sys 1	10	7	10		8	24	15	17	7		24	15		24	15	24		15	29		15	52		25
Sys 2	-	-	-		-		-	17	7		17	12		24	15	24		15	29		15	52		25
Sys 3	-	-	-			-	-	-	-		-	-		-	-	17		11	29		15	-		-
COMPRESSOR									1750 rprn at 60-Hz {Note 1)
06-	R	DA		DB		DD		DA			DA			DA			DA			DA			EAt
Sys 1	249	818	724		824	337	537	724	824		337	537		337	537	337		537	337		537	175		275
Sys 2	_	-	-		-	-	-	724	824		724	824		337	537	337		537	337		537	175		275
Sys 3	-	-	-		-	-	-	-	-		-	-		-	-	724		824	337		537	-		-
Unloading Cylinder	0	0	2		2	2	2	0	0		0	0		0	0	0		0	0		0	4		4
Capacity Steps	1	1	2		2	2	2	2	2		2	2		2	2	3		3	3		3	2 or 4
Oil Capacity (Pfs)	s	7			10		10	10	ea		10	ea		10	ea	10		eo	10		eo	17 ea
CONDENSER, Type	Tf	_		TT	-	SC	-	SC	-		SC	-		SC	-	SC			SC		_	ST		-
Number	1	-	1		-	1	-	2	-		2	”		2	-	3	-		3		--	2		-
EVAPORATOR FAN								1725 Rpm;			Belt-Driven ^		_entriugn 1
Nominal Cfm	3000		4000			6000		8000			10,000			12,000		16,000			20,000			24,000
Range Cim	2250-		3000-			4500-		6000-			7,500-			9,000-		12,000-			15,000-			20,000-
	3750		5000			7500		10000			12,500			15,000		20,000			25,000			25,000
Nominal Motor Hp	1	0	2 0			2 0		3 0			5 0			5 0			7 5			10 0			15 0
Frame (NEMA)	56			145T		145T		182T			184T			184T		213T			256 U			284 U
Motor PDR (Note 2)	2 4	-3 4	2 4		-3 4	3 7	-4 7	4 0	-5 0		4 3	-5 3		4 3	-5 3	5 6,6 0,6 4			5 8,6 2,6 8			7 0,7 4,8 0
Fan PPD	8 5		7 0			1	4	10 0			12 4			1	0		15 4			15 4			15 4
Belt No. ... Length	1	35	1		35	1	49	2	45		2	88		2	88	2	63		2	100		2	98 8
FSR (Rpm) (Note 2)	495 --700		600 -850			568	-720	700	-875		605	-750		685	-845	627,672,717			650,695,762			785,828,895
Speed Change per Vi						14 5		17 5			14 5			16 0						-			-
turn of Pulley	18				22												-
Flange (Rpm)
Moveable Pulley —							6		5			6			6		-			-			-
Max full turns from	5K.			5K>
Closed Position
PRESSURESTAT										Setting s (psig)
, Cutout										BA-280		BB -375
High _ , .									BA -180 BB-275
® Cut-in
, Cutout									27														29
Low _ . Cut-in									60														63
EVAPORATOR COILS							3		4			4			4		4			4			4
Rows		3			3
Fins/ln.		13			13		13		1			1			11		11			11			13
Face (sq ft)	7 31		8 54			16 90		18 04			22 6			26 9			36 5			46 3			46 3
FILTERS, Low Vel**								3 16x25x2			6 25x20x2			6 25x20x2					10 20x25x2			10 20x25x2
No. ..Size (in.)	4 16x20x1			4 16x20x1
						3 20x25x2		3 .20x25x2			2 16x20x2			2 16x20x2					5 16x25x2			5 16x25x2

FSR -	Fan Speed Range
PDR -	Pitch Diameter Range
PPD -	Pulley Pitch Diameter
SC	Shell and Coil
ST	Shell and Tube
TT	Tube in Tube

Add 140 lb for plenum
Does not include charge for	matching air-cooled condenser or
connecting piping used with	50BB units All 50BB units are
shipped with holding charge

4O6EE on System 2

**Filters shown are supplied with unit Field-supplied 2-in filters will fit 008 and 01 2 units

NOTES:

1Compressor rprn on 50BA008 is 3450

2Fan motor pulleys on 50BA.BB044, 054 and 064 are fixed pitch

3Maximum fan speed for all units is 11 00 rpm

Rigging and Unit Placement — Inspect unit for shipping damage. File any claim with trans­ portation agency. Provide space around unit for service, filter access, and clearance for plenum, if used. Move and store unit in upright position. Use slings with spacer under base skid to prevent panel damage when using hoist. Raise base skid on blocks and remove bolts. On 028 thru 064 units, unbolt fan section from skid. Units, as shipped, are adequately dampened against vibration. However, if additional dampening is desired, place sponge

rubber, rubber mat or fiberglass roof insulation between floor and base of unit or install vibration isolators.

Units	50BA,BB008		thru	024	are	shipped	for	I
vertical discharge. If horizontal discharge is desired
on 008		and 012 units, a field-fabricated elbow
must	be	installed. On 016		and	024	units for top
mounted		horizontal	discharge,		accessory		filler

panels must be field installed (see Fig. 2).

Fig. 2 - Typical Fan Section Arrangements

(50BA,BB016,024 Only)

#

For 016 and 024 units back mounted hori­ zontal discharge (see Fig. 2).

1. Remove.

a.Rear fan section panel.

b.Upper rear coil section panel.

c.Flexible conduit and wires from motor.

d.Corner bolts holding fan-to-coil section.

2. Lift off fan section and rotate 180° lengthwise

^motor on left side of unit.

3.Locate on rear of coil section and refasten.

4.Replace motor conduit and wire.

5.Adjust:

a.Shaft alignment.

b.Fan wheel position.

c.Pulleys.

d.Fan belt.

6. Replace:

a.Coil section rear panel (lb) on top of coil section and fasten.

b.Fan section panel (la) on top of fan section and fasten.

A field-installed accessory plenum is available for free blow application on the 008 thru 024 units.

Units 50BA,BB028 thru 064 are shipped in sec­ tions as noted previously — can be field assembled for either vertical or horizontal discharge.

HORIZONTAL DISCHARGE (see Fig. 3 and 4)

NOTE: Units vary in size but are basically the same. Fan section panels may be removed for easier lifting and to facilitate motor installation.

1. Remove:

a.Upper rear and end panels on coil section.

b.End panels on fan section.

c.Fasteners holding lower rear edge of fan panel.

2. Lift and position fan section on rear of coil section, Fig. 4. Fasten with provided fasteners.

3.Install (see note regarding 044 size unit):

a.Motor mount frame angles.

b.Motor on plate assembly.

c.Motor-plate assembly into frame angles.

d.Other drive package components.

4.Adjust:

a.Shaft alignment.

b.Fan wheel position.

c.Pulleys.

d.Fan belts.

5.Replace and fasten:

a.Rear coil section panel (la) on top of coil section. Rear holes will overlap fan section top panel. Fasten using hole vacated in (Ic). See Fig. 4.

b.All end panels after adjustment.

NOTE: Motor mounting channels are factory installed on 044 size units. No angles, plates or fasteners necessary. In this position, fan motor will be located at right side within fan section.

VERTICAL DISCH

TOP MOUNTED

NOTE

Motor pulley on left side of unit — vertical discharge.

Motor pulley on right side of unit ~ horizontal discharge.

Fig. 3 — Fan and Motor Arrangements

50BA,BB028,034,044,054,064

VERTICAL AIR DISCHARGE, TOP MOUNTEE

(See Fig. 3 and 4)

1.Remove:

a.Front, rear and end fan section panels.

b.Upper rear and end coil section panels.

c.Filter from coil section.

d.Fasteners holding filter frame top. Push out away from coil section frame (on 028 anc 034 only).

REAR HORIZONTAL FAN AND VERTICAL FAN DISCHARGE. 50BA.B8 028,034, D44,054

MOTOR MOUNTING AND 064 BRACKETS (INSTALL

AFTER MOUNTING FAN SECTION)

FAN SECTION

FILTER SECTION

	NO MOTOR MOUNTING
	BRACKET USED WITH
	044 SIZE UNIT	self
	THREE FANS ON 054 AND
		TAPP««
	064 UNITS	Gcsews
		cciLSBxnati
		TOPBSAft
	REAR PANEL FAN SECTION

Fig. 4 — Fan Mounting

2 Lift and position fan section on coil section, Fig. 4.

3.a. Fasten fan section frame to coil section frame with provided fasteners,

b.Reposition and fasten upper filter frame (on 028 and 034 only).

4.Install (see note regarding 044 size);

a.Motor mounting frame angles.

b.Motor on motor-plate assembly.

c.Motor-plate assembly into frame angles.

d.Other drive package components.

NOTE. Motor mounting plate and channels are factory installed within fan section on 044 size units. No angle frame plates or fasteners nec­ essary. In this position motor will be on right side of unit.

5.Adjust:

a.Fan wheel alignment.

b.Shaft alignment.

c.Pulleys

d.Fan belts

6.Replace and fasten:

a.Rear coil section panels, front and rear fan section panels.

b.All end panels after adjustments.

FAN MOTOR MOUNTING

Units 50BA,BB028, 034, 054 and 064 — Motor, motor mounting assembly, drive package and fasteners shipped separate from unit. Install items after fan section is in place on coil section. See Tables 1 and 2.

NOTE: Before installing motor or motor mounts in 028, 034, 054, and 064 units place plywood over evaporator coil to prevent damage.

To install motor;

1. Fasten motor mounting angle bracket to fan section. Use Fig. 3 or 4 as a position reference and Fig. 5 and 6 as a guide. Be sure lip of angle brackets are around fan section frame and that motor mounting plate slots face each other.

2.Position motor on motor plate and fasten with fasteners provided; use Fig. 7 as a guide.

3.Lift motor-plate assembly and slide into motor mounting angles as shown in Fig. 5. Plate fits in angle slots. On vertical mounts, the motorframe assembly may be lowered to bottom of support angle channels.

4.Assemble and install motor adjusting screws as shown in Fig. 8. Drive roll pins into screws to prevent screws from backing out while adjust­ ing motor position. On 50BA,BB054 and 064 units, the adjusting screws engage the motor mounting plate.

5.Adjust motor position. Fasten motor mounting plate to mounting angles.

Table 2 — Alternate Fan Motors and Drives

	UNIT	NEMA		CENTER LINE		FAN
		FRAME	HP	DISTANCE (in.)		SHAFT
	SOBA.BB
		SIZE*		Max	Min	DIAM (in.)
	008,012	184,56,1451	2	10.2	6 8	V
		182T,213	3	10.2	6.8	74
		184,56,1451	2	11.8	9 4
	016,024	213,182T	3	11 8	8.4	1
		184T,215	5	11.8	8 4
		1827,213	3	34.4	28 8
	028,034	1847,215	5	34.4	28.8	F/16
		254U,213T	Th	33 3	29.8
		256U,215T	10	33.3	29 8
	044	254U,213T	7/2	14.3	10.1	1 V
		256U,215T	10	14.3	10 1
		254U,213T	7/2	33.5	29.0
	054,064	256U,215T	10	33.5	29.0
		284U,254T	15	33.5	29.0

‘Range of motor sizes unit will accept

NOTE: Motors and drives other than those furnished with unit must be purchased locally

Units 50BA,BB044 — Shipped with motor mount­ ing plate installed in fan section. See Tables 1 and 2 for motor data.

To install motor:

1. Remove bolts holding motor plate to unit support channels.

Fig. 5 - 028 and 034	Fig. 6 — 054 and 064
Horizontal Fan Motor	Vertical Fan Motor
Mounting Angles	Mounting Angles

FAN MOTOR

SUPPORT CHANNEL

50BA,BB

028,034

50BA,BB	-MOTOR	^ MOTOR	Li^oTOR
	ADJUSTING	SUPPORT	SUPPORT
054,064	SCREW	ANGLE	CHANNEL
Fig. 7 — Motor	Fig. 8 — Assembled
Mounting		Fan Motor
	Adjusting Screw

2.Remove two adjusting screws; lift out motor plate.

3.Position motor on motor plate and fasten with fasteners provided as shown in Fig. 7.

4.Lift motor-plate assembly and slide onto channels; be sure plate slides under lip guides.

5.Reinstall adjusting screws and adjust motor position.

6.Fasten motor plate to channels.

Shaft and Wheel Alignment — On units where fan section is shipped separately, check alignments before mounting fan section.

HORIZONTAL WHEEL CENTERING - All wheels must be horizontally centered between the inside edges of their respective fan scroll venturis (Fig. 9). To adjust individual wheels:

Units 50BA,BB008 thru 024

1.Loosen setscrews holding wheel support to shaft (Fig. 10).

2.Center wheel by sliding horizontally (Fig. 9).

3.Retighten setscrews.

Units 5QBA,BB028 thru 064

1.Loosen fan wheel locking clamps, one on each side of fan support (Fig. 10).

2.Center wheel by sliding horizontally (Fig. 10).

3.Re tighten locking clamp bolts using torque indicated in Table 3.

WHEEL

7SCROLL

VENTURI

MUST BE EQUAL ALL AROUND

Fig. 9 — Horizontal Wheel Centering

Fig. 10 — Fan Locking Detail

- 028,034,044,054,064

Table 3 — Torque Requirements

	BOLT SIZE (in.)	FAN CLAMP BOLT
		RECOMMENDED TORQUE (ft - lb)
	5/16	15 -
	7/16	30 ^	35

CONCENTRIC ALIGNMENT - Shaft and wheels must be concentrically centered with respect to the venturi or air inlet of the fan housing (Fig. 11).

Units 50BA,BB008 thru 024 - Shaft bearings are held by a “spider” support, Fig. 12. If shaft and wheels are concentrically misaligned due to ship­ ping shock, it is possible to rebend spider arms to their original position. Spider should be replaced if it has been extensively damaged by shipping shock.