Carrier MODU-PAC 50DF User Manual

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Electric Heating: 182,500 to 808,000 Btuh Electric Cooling: 220,000 to 753,000 Btuh

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Electric Cooling: 220,000 to 744,000 Btuh

Air Distribiitioin S|/steni

Moduline® for VAV system

Versatile rooftop units — for constant or

variable air volume applications in the 20to 60-ton range

NOW — with energysaving features for years of outstanding performance

•SOLID-STATE CONTROL LOGIC

•INTEGRATED ECONOMIZER/MECHANICAL

COOLING

•LOW-LEAKAGE DAMPERS

•INTERTWINED COILS

•TWO-SPEED INDOOR " FAN OPTION

' Carrier Corporation 1982

Form 50DF-2P

£

	50DF	50DF Modu"Pac@
FEATURES AND BENEFITS	3	22-24
OPTIONS AND ACCESSORIES	4,5	24
PHYSICAL DATA	6	25
BASE UNIT DIMENSIONS	7	26
ACCESSORY DIMENSIONS	8	27
SELECTION PROCEDURE	9	28
PERFORMANCE DATA
Cooling Capacities	9,10	29,30
Heating Capacities	10	32
Optional Equipment Resistances	10	32
Indoor Air Fan Pulley Data	11	32
Fan Performance	12	31
ELECTRICAL DATA	13-15	33
CONTROLS
Operating Sequence	16	32
Electrical Protection	17	33
TYPICAL WIRING SCHEMATIC	18	34
APPLICATION DATA	19	—
TYPICAL PIPING AND WIRING	16	35
GUIDE SPECIFICATIONS	20,21	36

VL

50DF

High quality features assure easy installation

— plus performance and energy savings

Solid-state components for precise system control — Units contain a solid-state control system that pro­ vides maximum operating economy. The “brain” of the system is a logic panel that offers 2-stage heating and cooling modes based on space re­ quirements. Panel also is the logic net­ work that coordinates operation of the economizer, energy management and two-speed indoor fan options.

Solid-state components require no calibration, are easily replaced and have long operating life.

Practical curb design for low in­ stallation costs — The curb supports unit on the roof. Eliminates special steel support frames and assures a low roof silhouette. Weatherproof enclosure eliminates need for a rooftop adapter or roof openings that could be sources of troublesome leaks. All utilities enter unit within the curb; saves time and reduces installation costs. A wood nailstrip is also included.

Adaptable duct connections — The Carrier design provides large duct openings that permit low airflow veloci­ ties and even air distribution. Bottom supply and return ductwork is easily installed. Concentric ductwork with diffusers also may be connected to the 20-, 25-, and 30-ton units.. .with no internal modifications.

For convenience, alternate side supply and return openings are provided for horizontal duct applications. Simply relocate side supply and return panels, place them in the bottom openings, relocate one interior panel and the unit is quickly converted for side duct con­ nection. An accessory conversion kit is required for units with economizer.

Factory-installed filter rack includes 2-in. filters.

115-volt convenience outlet — An on-the-job power source for service light or hand tools.

Pre-installed tracks for hydronic coil application. Factory installed on units without electric heat option.

Weather Armor cabinet stands up to the weather. Cabinet design exceeds UL and Carrier rain test requirements. Units keep attractive appearance for years — even in salt air or heavy in­ dustrial environment.

Time Guard® circuit — Compressor will not short cycle on a safety device or power interruption. Starts outdoor air fans 15 seconds before compressor to minimize solar heat buildup and reduce start-up load.

Single-location power connections

— Unit is factory wired with all heating and cooling power circuits internally routed to a terminal block in one com­ partment. Some units, with higher heat/ cool ratios, have 2 terminal blocks. No need to route expensive wiring to separate heating and cooling power locations. Saves time, money and labor.

Fixed-speed evaporator fan drive —

less vibration than variable-speed drive. Extends belt life and minimizes drive noise.

Manual damper, on standard units, can be preset to admit as much as 25% outdoor air for year-round ventilation.

Built-in convenience — Quick-release access panels, slide-out filters and plug­ in relays simplify routine inspection and maintenance.

Carrier-built intertwined refrigerant coils have staggered copper tubes with mechanically bonded fins to ensure optimum heat transfer. Intertwined design provides cooling of the full air stream with minimum compression.

Direct-drive condenser fans are

factory lubricated. Vertical discharge moves air quietly and efficiently.

Carrier compressors have factoryinstalled service valves, crankcase heaters, reversible oil pumps, mufflers, overloads in the control box and internal motor protection. Liquid line sight glasses and filter driers are also included.

Low-ambient temperature capa­ bility permits all units to operate at out­ door temperatures as low as 35 F.

Cfficurr	CON\gv(IENCE LOGIC LOW VOLTAGE
8REA:	OUTLET , PANEL TERNHNAL BLOCK

LOGIC PANEL	CARRIER SERVICEABLE	«LEAD
	HERMETIC COMPRESSORS	COMPRESSOR
		(Uses Suction
		Pressure)

Factory-installed options and accessories offer flexibility to application

Modulating outdoor air control package (economizer) — Even when outdoor air temperatures are low, many installations still require cooling. The economizer uses the cool outside air to provide this cooling. Saves energy, reduces compressor wear and tear and lowers operating costs.

The economizer	contains	these
energy saving features:
• Electronic control	logic	balances

the conditioned space demand against the cooling system output. Ensures that the economizer modulates to correct position or closes to minimum position to maintain a stable temperature in the conditioned space. Never too much or too little cooling.

The control logic also integrates economizer cooling with mechanical cooling. If outdoor enthalpy permits, economizer acts as first stage of cooling. If conditioned space requires more cooling, economizer works in conjunc­ tion with mechanical cooling to maintain required indoor temperature.

The integrated system supplies only the amount of mechanical cooling necessary.

•Low-leakage dampers limit infiltra­ tion. Rated by the manufacturer at 3% with 3-in. wg pressure differential.

•Spring return damper motor auto­ matically closes the outdoor air dampers in the event of a power failure. (Option or Accessory)

Two-speed indoor fan option —

Substantial energy cost savings can be obtained because fans automatically

operate at low speed during most cool­ ing operating hours. High speed is used only if and when necessary to maintain comfort conditions.

A 4-stage electronic logic panel selects the most efficient fan speed and compressor stage to satisfy room de­ mand. Economizer performance is optimized by utilizing low-speed opera­ tion except when space conditions require the additional capacity of high­ speed “free cooling”.

The two-speed option is available in either standard or alternate motor sizes. All control and power wiring are factory installed; thus, costly field wiring and adjustments are not necessary.

The two-speed fan motors are 2 winding (4 pole/6 pole) with rpm’s of 1760/1170.

Power exhaust — Coupled with the economizer, up to 75% of the return air can be exhausted. Also, eliminates over-pressurization of the building. Designed for use with bottom duct connection arrangements. Used only with economizer. (Option or Accessory)

Electric heaters — Three factoryinstalled and one field-installed heating capacity are available. Factory wired for 2-stage heat. Outdoor air thermostats can be added to provide additional stages as required. Branch circuit pro­ tection is built in on each unit. (Option or Accessory)

Bag filter — Extended surface media provides high filtration of 50% (NBS Dust Spot Test). Filter frame permits use of field-supplied bag filters to pro­

field-installed most any

vide up to 95% filtering efficiency. (Option only)

Alternate		indoor	fan	motor and
drive	provides		increased perform­
ance	for	application		requirements

beyond standard unit operation range. (Option only)

Energy management kit—Additional energy savings occur thru the use of the multi-feature energy management kit which contains a setback/setup module, a 7-day programmable clock and morning warmup thermostat.

During unoccupied periods, the set­ back/setup module provides a select­ able amount of heating setback and either cooling shutdown or a selectable amount of cooling setup

The 7-day clock controls unit opera­ tion in and out of the setback/setup modes. Clock contains a 10-hour spring carryover for continuous operation during power failures. Re-programming is not necessary.

A 5-hour bypass switch provides unit operation during unoccupied modes. The clock and bypass switch are con­ tained in an attractive remote control panel which installs in a convenient location. Six status lights on the panel indicate system operating modes.

The morning warmup thermostat senses return air temperature and saves energy by keeping the outdoor air damper closed until morning warmup is complete. Avoids using energy to warm cold outside air. (Option or Accessory)

REMOTE CONTROL PANEL	SETBACK/SETUP MODULE	7-DAY CLOCK
(Control Box)

Barometric relief damper operates automatically to help exhaust excess air during economizer operation. Ac­ cessory comes partially assembled for easy installation.

Roof curb supports unit and frames roof opening. Provides a strong, water­ tight interface between unit and roof. Once curb is set in place, the unit may be rigged at any time — no need to schedule around the roofer. Design complies with National Roofing Contractors Association (NRCA) requirements.

Outdoor air thermostat allows addi­ tional staging of electric heat. Multiple thermostats permit as many stages of control as there are heaters in the unit.

Suction pressure unloader package

— Additional staging, beyond the stand­ ard 2 stages of capacity control, can be accomplished with field-installed suc­ tion pressure actuated compressor unloaders. (024 size is excluded, uses a standard electric unloader.)

Motormaster® head pressure con­ trol modulates the speed of outdoor air fan motor to maintain correct con­ densing temperature at low outdoor air temperatures. Permits operation to -20 F, if required.

Electronic temperature sensing —

Three electronic sensing/transmitting devices are available to meet your specific application requirements. Each transmitting device contains dual (heating/cooling) set point adjustment levers concealed under a locking cover. Light emitting diodes (LED’s), also con­ cealed under the cover, allow diagnostic checkout of control system from the transmitting device. The choices are:

•	Thermostat with integral sensor —
A	traditional application. Both the

temperature set points and the sensing device are contained in one device installed in the conditioned space.

•Transmitter with remote sensor —

The transmitter contains the tempera­ ture set points and LED’s under its cover. In this application, a remote wallmounted sensor is installed in the con­ ditioned space and the transmitter is installed in a restricted-access area. Eliminates unauthorized adjustment of conditioned space temperature.

•Thermostat or transmitter on subbase

—provides manual COOL-AUTO.- HEAT-OFF system switching and AUTO.-ON fan switching from a con­ venient location. Recommended for units without energy management kit.

fsODFl

FANS	MOTORS
	I____

PO’WER EXHAUST FANS AND MOTORS

THERMOSTAT OR	REMOTE
TRANSMITTER	SENSOR

UNLOADER PACKAGE

MOTORMASTER CONTROL

I 50DF~

Physical data

UNfT SOOF	02A	028		034			044			054 064		#
OPERATING WEIGHT (lb)	3000		3700		4400		5406		6100		6485
Base Unit
Economizer	150		175		200		225		250		250
Roof Curb	125		150		175		200		225		225
COMPRESSOR	1 06E		2 060			Serviceable, Hermetic
No ..Type						2 06D	2 06E		2 06E* **		2 06E
No Cylinders (ea)...Rpm	4 1750		6 1750		6 1750		4 1750		4,6 1750		6 1750
Capacity Steps (%) (Std)	50,100		60,100		50,100		50,100		60,100		50,100
With Accessory Unloaders	—		19,38,57,100		16,33,50,100		25,50,75,100		20,40,60,80,100		16,33,50,67,83,100
REFRIGERANT CHARGE	36 0 —		Type 22; Controlled by Thermostatic Expansion Valve						53 0 42 0	81 0 81 0
Sys 1...Sys 2 (lb)		23 75 18 25		29 0 29 0			37 0 37 0
OUTDOOR AIR FANS	2 30					Direct Driven, Propeller Type					4 30
No ...Diameter (in.)			2 30		3 .30		3 30		4 30
Nominal Cfm	14,000		14,000		21,000		21,000		28,000		31,000
Motor Hp...Rpm	1 1050		1 1050		1 1050		1 1050		1 1050		1 1150
CONDENSER COIL	3 139		3 139	3 158			3 158		3 158		4 158
Rows.. Fins/in.
Total Face Area (sq ft)	31 1		38.0	49 0			61 0		81 5		81 25
				i
INDOOR AIR FANt	2 15x11		2 15x15			Belt Drive, Centrifugal Type			4 15x11
No. ...Size (in.)						3 15x9	4 15x9				4 15x11
Max Allowable Rpm	1300		1300		1300		1300		1300		1450
Nominal Cfm	8,000		10,000		12,000		16,000		20,000		24,000
Standard Motor and Drive
Motor Hp	5 (460V)		7-1/2		10		15		20		25
	7-1/2 (208-230V)
Motor Frame Size
	184T (460V)
Single-Speed			21 3T			21 5T	254T		256T		284T
	213T (208-230V)
Two-Speed	215T (460V)		254T			256T	284T		286T		286T
	254T (208-230V)
Fan Pulley Pitch Diam (in )	106		106		106		106		106		80
Fan Pulley Bore	1 -3/16		1-3/16		1-11/16		1-11/16		1-11/16		1-11/16
Single-Speed Motor Rpm	1750		1750		1750		1750		1750		1750
Two-Speed Motor Rpm	1750/1170		1750/1170		1750/1170		1750/1170		1750/1170		1750/1170
Motor Pulley Pitch Diam (in.)	65		65		6 5		65		6 5		5 6
Pulley A
Pulley B	60		56		5 6		56		60		60
Resulting Fan Rpm	1073 991
Single-Speed with Pulley A...B			1073 925		1073 925		1073 925		1073. 925		1225 1312
Two-Speed with Pulley A.. B	1073/751		1073/751.		1073/751		1073/751		1073/751		1225/817
	991/661		925/617		925/617		925/617		991/661		1312/875
Alternate Motor and Drive	7-1/2		10		15		20		25t		30t
Motor Hp
Motor Frame Size	213T		215T			254T	256T		284T		286T
Single-Speed
Two-Speed	254T		256T			284T	286T		286T		—
Fan Pulley Pitch Diam (in.)	80		80		80		80		80		60
Fan Pulley Bore	1-3/16		1-3/16		1-11/16		1-11/16		1-11/16		1-11/16
Single-Speed Motor Rpm	1750		1750		1750		1750		1750		1750
Two-Speed Motor Rpm	1750/1170		1750/1170		1750/1170		1750/1170		1750/1170		1750/1170
Motor Pulley Pitch Diam (in.)	53		5 3		53		5,3		53		50
Pulley A
Pulley B	56		56		56		5 6		56		**
Resulting Fan Rpm	1159 1225		1159 1225		1159 1225		1159 1225		1159 1225
Single-Speed with Pulley A...B											1450 —
Two-Speed with Pulley A...B	1159/773 .		1159/773		1159/773 ,		1159/773		1159/773		1450/967 ,
	1225/817		1225/817		1225/817		1225/817		1225/817
EXHAUST FAN MOTOR Qty...Hp	1 3		1 3		1 3		2 3		2 3		2. 3
EVAPORATOR COIL	4 15		4 15		4 15		4 15		4 15		4 139
Rows...Fins/in.
Total Face Area (sq ft)	15 1		177		24 8		30 2		35,4		35 4
ELEC RESISTANCE HEATERS			Open Nichrome Wire Elements with Multiple-Stage Control
Heat:Kw	37,55,91		55,73,110		55,91,128		73,110,165		91,146		91,146
INDOOR AIR FILTERS
No .. Size	6 20x25					9, 20x25			9 20x25		9 20x25
Standard; 2-In Throwaway			18. 16x25				27.. 16x25
	6 15x25					12 16x25			21 16x25		21 16x25
Bag Type; 12-in. (Opt)	3 12x24		4 .12x24			5.. 12x24	6. 12x24		7 12x24		_
	3 24x24		4. .24x24			5. 24x24	6 24x24		7 24x24

*Unit contains one 06EA250 and one 06EA275 compressor

fStandard fan motor supplied with standard fan drive pulleys and belts; alternate fan motor supplied with alternate fan drive pulleys and belts Other combinations are field supplied Pulley A is installed in unit; pulley B is shipped with unit (024-054)

itDue to large frame size, the 25 hp, 208-230 volt and 30 hp motors are avail­ able in single speed only

**The 50DF064 alternate drive Is supplied with Pulley A only

1182

Base unit dimensions

ELECTRIC

HEATER

ACCESS

PANELS

©»«PRESSOR END

INDOOR AIRFLOW

		DIMENSIONS (ft-in.)			OPTIONAL
UNIT	024	028 I 034 I 044	054		Q04 AIR INTAKE HOOD
50DF
A	10-10	13- 8-1/2‘1 17- 1 ['20- 6-1/2	24-11-1/2	24-11-1/2 \
8		7-3-1/8
C	4-11	4-11	13- 0-1/2		13- 0-1/2 li
D		6-11 ■ 9-0 i 11- 0
E	0-10-1/4	0-10-1/4 i 0-10-5/16 0-10-5/16	0-10-5/16	0-10-5/16 1
F	0- 9-7/8	0- 9-7/8 ¡0- 9-7/8 1- 1-1/4	1- 3	1- 3 1
6	—	— — 0- 9-3/16	0- 9-1/8	0- 9-1/8 \
H		— i — 1- 8-1/4	1-10-11/32		1-10-11/32 V
	—
J	3-1/2" NPT	4" NPT i 4" NPT 4“ NPT <ea)	4" NPT (ea)		4" NPT (eal V
K	2- 4	2- 4 ; 2-10 2-10	2-10		2-10
L	6- 1-1/2	9- 0 ; 11- S :14-10-1/2	19- 3-1/2		19- 3-1/2
M	—	— Î — 1 5- 8-1/2	7- 7-1/2		9- 4-1/2
N	~	— 1 — ¡ 4 - 7	5-10		6-10

Cenified dimension drawings available on request.

NOTES;

1.Allow 12 ft above unit 8 ft on filter access pane! erxland 4ft on remaining sides of unit for airflow arwJ service clearance.

2For smaller clearances, contact Carrier.

3Refer to Roof Curb dimensions for details of roof openings

50DF

OUTDOOR AIR FANS:

2- 024.028

3- 034,044

4- 054, 064

ALTERNATE

CONTROL WIRE

OPENING CONDUIT

ALTERNATE PIELO POWER WRING

ICOOLiNG ONLY UNIT)

a®OOR AtR FAN AND FiLTEB

ACCESS PANELS

DRAIN

2|" DiAM U"

*^MPT C0NN.,I.

ALTERNATE

DRAIN 2~“ KO <r HURT CONN. iNStOE)

ALTERNATE

POWER WIRE OPENING 3^"NPT

GCATING/COOUNG " UNITK2 ON

044.054 AND

064)

MAIN POWER WIRE OPENING <J) CHEATING/ COOLING UNIT', (2ON 044,054 AND 064)

ENTHALPY

CONTROL

LOCATION

-024,028

OPTIONAL JS-034

EXHAUST HOO0SÌ4-O44

{5-054,064

50DF1

Accessory dimensions

DUCT WORK (FIELD
SUPPLIED) MUST BE	■ 5*i"
NOTCHED TO CLEAR	V1EW8-B
SUPPORT
NOT USED ON 024.028
(LOCATE PER DIMENSIONS)'

ROOF CURS ASSEMBLY

FIELD

POWER

SUPPLY

HEAT UNITS

TYPICAL 4 SIDES

ILTi^v^r-UNIT BASE Jr \ RAIL

WOOD NAILER (FACTORY SUPPLIED)

COUNTER FLASHINS (FIELD SUPPLIED)

ROOFING FELT / (FIELD SUPPLIED)

NOTE:

CURB MUST BE LEVEL SO THAT UNIT DRAINS FUNCTION PROPERLY

SEE BASE UNIT INSTALLATION INSTRUCTIONS FOR LEVELING TOLERANCES

RIGID	ROOFING MATERIAL
INSULATION	(FIELD SUPPLIED)
(FIELD SUPPLIED) \	CANT STRIPiFIELOSUPPl .lEO)
VIEWA-A
DIMENSIONS (ft-in.)

UNIT A	; 8	c	D	E	F : G
50DF024 ;10- 0-1/4	; 4-n	: „		0-6-1/4	0-5-1/8 : —
50DF028 ;12-10-3/4	: 6-11	i “		0-6-1/4	0-5-1/8 i -
50DF034 Ì16- 3-1/8	; 9- 0	; 4-4	0-6	0-8-1/4	0-6-7/8 i -

	UNIT	A	B i c	O E F		G
	50DF044	19-8-1/4	11-0 15-4	0-6	:0-6-1/4 ;6-9-1/4	0-7
	S0DF054	24-1-3/4	13-0:6-4	0-6	10-6-1/4 iO-6-3/4	0-7-11 /32
	50DF(^

n

SU^ASE	THERMOSTAT/TRANSMITTER
REMOTE CONTROL PANEL
(Control Box)

1182

SctectlOîî procedure (with example)

1 Determine cooling and heating requirements at design conditions.

Given
Required Cooling Capacity (TC) .......................	300,000	Btuh
Sensible Heat Capacity (SHC) ............................	236,000	Btuh
Required Heating Capacity ................................	240,000	Btuh

Condenser Entering Air Temperature	........................... 95 F
Indoor Air Temperature .... ...................	80 F edb, 67 F ewb
Evaporator Air Quantity......................................	10,000 cfm
External Static Pressure .......................................	1 80 in wg
Electrical Characteristics (V-Ph-Hz) ..............	460-3-60

II Select unit based on required cooling capacity

Enter Cooling Capacities table at condenser entering temperature of 95 F Unit 50DF028 at 10,000 cfm and 67 F ewb will provide a total capacity of 308,000 Btuh and a

SHC of 236,000 Btuh. Calculate SHC correction, if required, using notes under cooling capacities tables

IIISelect heating capacity of unit to provide design condi- ^ion requirement.

In the Heating Capacities table, note that unit 50DF028 with 73 kw heaters will provide 249150 Btuh

c j j •

Determine fan speed and power requirements at design conditions.

f^an Performance table at 10,000 cfm and 1 80 in wg ^^at the fan speed is 1210 rpm and the power required is

>^P

^ Select unit that corresponds to power source available,

The Electrical Data table shows that a 460-3-60 unit is available

Performance data

COOLING CAPACITIES

	50DF024														50DF028
m						Evap Air — Cfm/BF
	Temp (F)														Temp (F)							Evap Air — Cfm/BF
				6000/.042			; SOOOAOy____{					9000/.070						9000/.058			! 10,000/.068~T 11,000/ 074
	Air Ent						Evap Air — Ewb (F)								Air Ent							Evap Air — Ewb (F)
				72	67	62		72	67	62		72	67	62			72		67	62		72	67	62	72		67	62
85			TC	266	243	220		278	255	233		283	260	237		TC	345		318	294		351	322	298	355		327	302
			SHC	132	165	197		147	191	231		157	206	237	85	SHC	178		229	278		185	242	296	194		253	302
			KW	21.3	20.1	19 0		22.0	20.8	19.6		22.4	21.1	20.0		KW	29.5		27.8	26.2		30.0	28 2	25.4	30.2		28 4	26.6
			TC	250	228	206		263	239	218		268	243	222		TC	330		303	278		335	308	283	339		312	287
95			SHC	127	159	191		142	184	218		153	198	222	95	SHC	174		223	272		181	236	283	190		248	287
			KW	22.6	1 2l;6	20.1		23.4	22.0	20.8		23.7	22.5	21.1		KW	31 2		29.3	27.7		31.4	29.5	28.2 ! 31.7			30.1	28.5
			TC	243	221	201		255	232	212		260	236	216		TC	320		295	271		325	299	275	329		303	279
100			SHC	124	157	189		139	182	212		150	196	216	100	SHC	171		220	268	178		233	275	187		245	279
			KW	23 2	22 2	20 7		24 0	22.8	21 4		24 3	23 1	21 7		KW	32 7		30 4	29 0		33 1	30.8	29 2	33 3		31 3	29 6
			TC	236	214	195		247	225	206		251	229	210		TC	310		286	263		315	290	267	318		294	270
105			SHC	122	154	186		137	179	206		147	192	210	105	SHC	168		216	263		176	229	267	183		242	270
			KW	23 9	22 6	21 4		24.6	23.4	22.1		24.9	23.7	22.3		KW	34 0		31 7	29 9	34.4		32 1	30.2	24 7		32 3	30 5
			TC	227	207	188		238	216	198		241	220	202		TC	300		277	255	305		281	259	309		284	262
110			SHC	119	151	183		135	176	198		144	189	202	110	SHC	165		213	255	171		226	259	180		239	262
			KW	24 8	23 2	22 0	25 3		24 1	22 5		25 6	24 4	22 8		KW	35 3		33 1	31 0	35 5		33 4	31 2	35 7		33 6	31 7

50DF034													50DF044
Temp (F)							Evap Air — Cfm/BF						Temp (F)						Evap Air — Cfm/BF
		10,000/.068					12,000/.082 | 13,500/ 088								14.000/051				^ 16,000/.062 i 18,000/.070
Air Ent							Evap Air — Ewb (F)						Air Ent						Evap Air — Ewb (F)
Cond				67		62
		72					72	67	62	72	67	62			72		67	62	72	67	62	72	67	62
	TC	412		380		349	424	391	360	430	397	366		TC	538		499	457	549	507	468	558	515	476
85	SHC	214		266		321	226	292	356	240	311	366	85	SHC	281		357	436	295	383	468	312	408	476
	KW	32 0		30 7		29 3	33.2	31.5	29.7	33.5	31 8	29 9		KW	43.7		41 8	39 5	45.1	42.5	33.8	45 4	42 9	40 6
95	TC	392		360		332	401	370	342	408	376	347		TC	506		465	427	516	475	436	524	481	445
	SHC	203		258		315	218	283	342	231	303	347	95	SHC	269		345	419	285	369	436	301	394	445
	KW	34 7		33 4		31 5	35.3	33.8	31.8	36 2	34 4	32 4		KW	46.8		43.7	41.0	47.1	44,5	41 8	47 5	45 0	42 7
100	TC	383		352		323	392	361	334	399	367	339		TC	491		450	411	499	460	420	506	466	428
	SHC	200		255		311	214	280	334	227	300	339	100	SHC	263		339	411	280	364	420	295	390	428
	KW	35 9		34 6		32 6	37 1	35.0	33 2	37 5	35 7	33 6		KW	47 9		45 0	42 5	48 3	45.6	43 1	48 7	46 2	44 1
	TC	373		344		316	384																	412
105								353	325	390	358	330		TC	475		436	397	483	444	405	490	450
	SHC	197		252		308	211	278	325	222	297	330	105	SHC	258		333	397	275	358	405	290	383	412
	KW	37 4		35 8		34 2	38.1	36 2	34 6	38 7	36 8	34 8		KW	49 2		46 6	43 6	49.8	47 1	443	50 6	47 5	45 2
110	TC	354		326		299	363	335	308	370	340	312		TC	458		419	380	'465"	■427	""388‘	473	433	395
	SHC	191		245		299	206	271	308	215	291	312	110	SHC	252		326	380	269	353	388	283	377	395
	KW	39 3		37 8		36 0	39.9	38 3	36.6	40 5	38 5	36 9		KW	50 8		47 9	45 2	51 3	48.5	46.0	51 7	49 0	46 8

ПорП

Performcince data (cont)

COOLING CAPACITIES

60DF054

Evap Air — Cfm/BF

Temp (F)		18,000/ (^8~T2ao6oZo6S ] 22^000/.073
Air Ent
					Evap Air — Ewb (F)
		72	67	62	72		67	62	72	67	62
	TC	686	639	596	636		648	604	704	654	612
85	SHC	361	462	565	376		485	600	392	514	612
	KW	56 3	53 2	50 4	57 6		54.2	50.7	58 6	54 5	51 6
	TC	650	602	558	659		610	566	666	616	572
95	SHC	347	446	546	363		472	566	380	499	572
	KW	61 1	57 6	53 8	61.5		57.8	53.7	62 2	58 8	54 7
	TC	629	581	538	637		589	545	644	597	552
100	SHC	340	438	538	354		465	545	371	493	552
	KW	63 1	59 0	56 3		63.7	59.8	56.6	64 3	60 2	56 9
	TC	608	563	518		616	570	525	622	576	532
105	SHC	333	432	518		348	457	525	365	483	532
	KW	51 0	61 4	58 1		—	61 6	584	—	62 1	58 7
	TC	589	540	496		597	546	502	604	552	510
110	SHC	325	423	496		344	448	502	359	475	510
	KW	—	63 8	60 3		—	64.2	60.5	—	64 8	60 9

50DF064

Temp (F)					Evap Air — Cfm/BF
		21,000 / .070 i 24,000 / .081							26,400 / .090
Air Ent
					Evap Air — Ewb (F)
Cond
		72	67	62		72 :	67^	62	72	67		62
	TC i	796	731	669		807 ;	744	684	820	753		696
85	SHC	413	521	620		432 :	553	658	449	579		683
	KW	61 9	58.8	55 9		62.4 j	59.4	56.6	63	59.9		57 1
	TC	751	693	634		766;	70Г'	649	775	714		660
95	SHC	397	505	600		418 i	536	635	433	563		657
	KW	66 0	62 8	59 6		66.8'	63.4	60.4	67.2	62.7		61.1
	TC	709	650	598		718	663	612	726	671		624
105	SHC	387	487	579		400	521	609	416	546		624
	KW	70 3	66.6	63 4		70.9-	67.4	64.3	71 4	67 8		65 8
	TC	665	609	562		672	617	576	678	624		591
115	SHC	365	471	556		384 •	502	576	399	526		591
	KW	74 3	70 5	67 0		74.9 i	71.1	68.1	75 4	71 6		71 9

BF — Bypass Factor			SHC — Sensible Heat Cap
Ewb — Entering Wet-Bulb			(1000 Btuh)
KW — Compr Mtr Pwr Input			TC — Total Cap (1000 Btuh) Gross
NOTES;
Direct interpolation is permissible			Do not extrapolate
The following formulas may be used.
	sensible capacity (Btuh)
f|db fedb		1 09 X cfm
f|wb	Wet-bulb temperature of		corresponding to enthalpy of air leaving
	evaporator coil (h|^p)

total capacity (Btuh) h|wb = hewb------------ ------------------

Where:

hewb" Enthalpy of air entering evaporator coil

SHC is based on 80 F edb temp of air entering evaporator coil Below 80 Fedb, subtract (corr factor x cfm) from SHC

			Entering Air Dry-Bulb Temp (F)
BF
				Correction Factor
.05	1.04	2 07	3 11		4 14	5 18		use formula
.10	98	1 96	2 94		3 92	491
								shown below
.20	87	1 74	2.62		3.49	4 36

Interpolation is permissible

Correction Factor = 1.09 x (1 - BF) x (edb - 80)

4 Cooling capacities are gross and do not include deduction for indoor fan motor heat

OPTIONAL EQUIPMENT RESISTANCES (in. wg)

UNIT	OPTION	UNIT CFM/TON
MODEL		Г3ОО	400		500	9
	Bag Filter	14	25		38
50DF	Economizer	03	05		08
	Economizer with Exhaust	.09	.15		.23
024-
	Electric Heaters 0 5:1 (Low)	06	09		13
044
	(Heat Cool Ratio)0 75 1 (Med)	09	15		23
	1.0.1 (High)	.14	.25		.35
	Bag Filter	14	25		38
	Economizer	03	04		08
50DF	Economizer with Exhaust	.11	.15		.24
054	Electric Heaters 0 5:1 (Low)	12	23		38
	(Heat: Cool Ratio)0 75 1 (Med)	15	30		46
	1 0 1 (High)	22	39		61
	Bag Filter	20	36		55
50DF	Economizer	04	07		11
	Economizer with Exhaust	13	21		31
064
	Electric Heaters 0 5 1 (Low)	18	35		54
	(Heat Cool Ratio)0 75:1 (Med)	24	44		68

HEATING CAPACITIES

		VOLTS			KW ^		STAGE			BTUH
	(Nominal)						1%
	208-230				30-37	;		’50		102,390-126,280
	460			I	37		50			; 126,280
	208-230			; 45-55		:	67			1153,585-187,715
	460				55	;	67			; 187,715
	208-230			1 75-91		,	60			255,975-310.585
	460				91	i	60			310,585
	208-230			' 45-55		1 67				1153,585-187,715
	460			i	55	^ 67				187,715
	208-230			1	60-73	! 50				¡204,780-249,150
	460			; 73			50			249,150
	208-230				30-110	' 50				1307,170-375,430
	460			i 110		: 50				375,430
	208-230			1 45-55		i	67			153,585-187,715
	460				55	; 67				187,715
	208-230			i 75-91		! 60				255,975-310,585
	460			; 91		i 60				310,585
	208-230			Ì105-128		1 57				358.365-436,865
	I 460			; 128			57			436,865
		208-230		! 60-73 1				50		1204,780-249,150
		460		i 73 ;				50		i 249,150
		208-230		190-110 1				50		1307,170-375,430
		460		1 110				50		! 375,430
		208-230			135-165 1			56		¡460.755-563,145
		460		; 165				56		: 563,145
		208-230		i 75-91 1				66		255,975-310,586
		460		; 91 ;				60		;■ -310,585
50DF054 ■
		208-230			120-146 :			50		409,560-498,300
		460		! 146				50		498,300
		208-230		1 75-91 1				66		1255,975-310,585
		460		i 91 ;				60		310,585
		208-230		0 20-146 ,				50		¡409,560-498,300
		460		; 146				50		: 498,300

«

1182

10

							50DF I
			INDOOR AIR FAN PULLEY DATA
	FAN		MOTOR		FAN	SINGLE-SPEED	TWO-SPEED
			PULLEY		PULLEY
						BELT	BELT
	RPM
			No. Grooves—Type—in.			NO.-SIZE	NO.—SIZE
925			2—3V—5.6		2—3V—10.6	2—3V—710	2—3V—710
	931		2~3V—6.0		2—3V—10.6	2_3V~750	2—3V~750
	1073		2—3V—6.5		2~3V—10.6	2-3V—750	2~3V—750
	TÓ93		2—3V—5 0		2—3V~ 8.0	2—3V—670	2—3V—7i0
	1159		2—3V—5.3		2-3V— 8.0	2—3V—670	2—3V~710
	1225		2—3V—5.6		2—3V— 8.0	2—3V—670	2—3V—710
	1300		2—3V—6 0		2—3V— 8.0	2—3V—710	2—3V—750
	925		2-3V-5.6		2—3V—10.6	2-3V—750 i	2—3V—750
	984		2—3V—4 5		2—3V— 8.0	2—3V—670 1	2—3V—670
	1073		2—3V—6.5		2-3V—10.6	2—3V—750 :	2—3V—750
	1093		2—3V—5 0		2—3V— 8 0	2—3V—710 i	2—3V—710
	1139		2_3V—6 9		2-.3V—10.6	2—3V—750 ■	2—3V—750
	1159		3—3V—5.3		3~3V— 8.0	3_3V_710	2_3V~710
	1225		2—3V—5.6		3_3V— 8.0	3_3V_710*	3—3V—710
	1300		2—3V—6 0		2—3V— 8 0	2—3V—710 i	2—3V—710
	925		2—3V—5.6		2—3V—10.6	2—3V—750	2—3V—750
	991		2—3V—6 0		2—3V—10.6	2—3V—750	i 2—3V—750
	1073		2-3V—6.5		2—3V—10.6	2—3V—750	2—3V—750
	1093		3—3V—5 0		3—3V— 8 0	3—3V—710	3—3V—670
	1141		4—3V—4.5		4-3V— 6.9	4—3V—670	4—3V—670
	1159		4—3V—5.3		4~3V— 8.0	4—3V—710	4—3V—710
	1225		4—3V—5.6		4—3V— 8.0	4—3V—710	4—3V—710
	1300		3—3V—6.0		3—3V— 8 0	3—3V—710	1 3—3V—710 ■
	925		4—3V—5.6		4—3V—10.6	3—3V—750t	3_^V—770
	991		3—3V—6.0		3_3V—10.6	3—3V—750	3—3V—770
	1073		4—3V—6.5		4-3V—10.6	3_3V_750t	3—3V—770
	1093		4—3V—5.0		4—3V— 8 0	4—3V—710	4—3V—710
	1159		5—3V—5.3		5—3V— 8.0	5_3V—710	5—3V—710
	1225		4_3V~5.6		5—3V— 8.0	5_3V_710*	5-3V—710
	j 1300		4—3V—6 0		4—3V— 8 0	4—3V—710	1 4—3V—710
	1 925		4—3V—5 6		4—3V—10.6	4~3V—750	4^V—750
	991		4-3V-8.0		4—3V—10.6	4—3V—750	4—3V—770
	1039		5—3V—4.75		5-3V— 8.0	5—3V—710	5—3V—710
	1073		4—3V—6.5		4-3V—10.6	4—3V—750	4—3V—770
	1093		5—3V—5 0		5—3V— 8.0	5—3V—710	5—3V—720
	1159		5~3V—5.3		5_3V— 8.0	5_3V_-710	5—3V—720
	i 1225		5-3V—5.6		5_3V— 8.0	5—3V—710	5--3V_720
	1 925		4—3V—5 6		4—3V—10 6	4—3V—750	4—3V—750
	I		4—3V—6 0		4—3V—10 6	4—3V—750	4—3V—770
1 1039			5—3V—4 75		5—3V— 8 0	5—3V—710	5—3V—710
1 1073			4—3V—6 5		4—3V—10 6	4—3V—750	4—3V—770
1 1093			5—3V—5 0		5—3V— 8 0	5—3V—710	5—3V—720
1 1159			5—3V—5 3		5—3V— 8.0	5—3V—710	5—3V—720
	1 1225		5—3V-5.6		5—3V— 8.0	5—3V—710	5~3V—720
	1 1312		5_3V—6.0		5—3V— 8.0	5_3V_-710	5—3V—720
	I 1450		1 5—3V—5.0		5-3V— 6.0	5_3V—670	—
Shaded values indicate standard or optional pulley combi­
nations available as		shown in Physical Data		table All
other combinations are field supplied

‘Remove one belt.

fDrive requires 3 belts; 4 belts may be used if desired.

11

50DF

Performance data (coni)

FAN PERFORMANCE

										EXTERNAL STATIC PRESSURE (in. wg)
CFM	0.20			0.40		0 60		0.80			1 00				1.20				1.40				1.60			1.80			2,00		2.20
	Rpm I Bhp			Rpm	Bhp	Rpm	Bhp	Rpm	Bhp		Rpm		Bhp			Rpm j Bhp			Rpm I Bhp				Rpm			Rpm Bhp				Bhp I Rpm : Bhp
6000	699	1 72		763	2 04'	820	2 34	872	2	64'	922	2 95			969			3 26	1012	3 56			l'Ó54 3 85 1094 :							4 48	1173 ■ 4.80
6500	746	2 1 2		807	2 48	862	2 81	912	3 13		959	3 46 11005						3 79	1048	4 13			1089	445: 1126:						5 1Cp.202,			.5.44.
7000	794	2 59		852	2 97	905	3 34	953	3 69		999	4		03 1042				4 39	1084 :	4 75			1125	5 12: 1162:						,5,.3.lil233			6.15
7500	843	3 13		897	3 54	948	3 94	995	4 32		1039	469			1081		i	5 06	1121 ; 544				1160	5.83:1198						6,60 SI 268			6.97
8000	892	3 74		943	4 17	992	4 60	1038	5 02		1080	5,42			1121		:	5 81	1159 :	6		21	,1197	5,82] 1234'						7.46'
8500	941	4 42		990	4 89	1037	5 35	1081	6 79		1122	6		23	1162		:	6 65 ;.U8.9.		.7..07.ÌÌ235				7.49		1270
9000	991	5	19	1037	5 68	1082	617	1125	6 65		1165	7.12			1203:			75711240' 801:1275						8.46
9500	1041	6.04		1085	6 56	1128	7 08	1169	7 59		1208	803Ì1246:						a 58 :128Ì i $ OS
110000109		6.99		1133	7 53	1174	8.08	1214	8.62		1?.53.		9.1S\12SS					5.6?		:			:
7500	662	1 78		731	2 25	791	2 71	848	3 21		904		3 76			956		4 36	1005		4 98		11054	5 69 1105			647		1153	7 31	1199		8 18
8000	696	2 09		763	2 60	820	3 07	877	3 60		928		4 15			980		4 76	1028		5 40		11074	6 07		1120	6.82		1167	7,64	1213		8,53
8500	730	2 43		796	2 99	851	3 49	905	4 03		955		4 59			1004		5 20	1052		5 87		1096	6 55		1140	7 26		1183	8 05	5.222		..8,8.1.
9000	764	2 81		829	341	883	3 95	933	4 49		983		5 09			1029		5 70	1076		6 35		1120	7	0S	1162	7.80		1203	8 55	1244			837;
9500	799	3 22		862	3 87	915	4 46	963	5 01		1012		5 63		1057			6 26	1100	6 92; Ì1144				7 63		1186	8 39		1226	9.15	1254		9.83
10000	834	3 68		895	4 37	948	5 01	994	5 59		1040		6 20		1085			6 87	1127	7 53			1169	8.24		mo.-9.00.			1250	8.31	1237		10,60
10500	870	4 20		929	4 90	981	5 60	1027	6 20		1069		6 80			1113		7 50	1155	8 20			•1194	390		1234	9.70		1273	10.50
11000	905	4 70		963	5 50	1014	6 20	1059	690		1100	7 50				1142		8.20	1184		900I :.U22, -9,20J1260						10.40		1298	11.20
11500	941	5 30		997	6 10	1047	6 90	1092	7 60		1132	8 30				1171		900	1212		, 9J?0		(1251	10.50		1236	11.30
12000	977	6 00		1031	6 80	1080	7 70	1125	S.40		1165	9 10				1202		9,80	1240	10 60:: 1279				11 40
112500	1013	6.70		1065	7.60	1114	8.40	1157	9.30		1197		10.CX)			1234		10.70	1270		11,50;
9000	690	2 86		755	3 40	812	3 91	865	4 42		916		4 94		960			5 42	1006	5 94 11052				6 48		1094	7 02		1133	7.57	1173		8 18
9500	720	3 29		784	3 88	839	4 42	891	4 95		940		5 49		985			6 03	1026	6 54'1071				7 10		1114	7 57		1153	8 24	1190		8 81
10000	751	3 76		813	4 40	867	4 97	917	5 53		964		6 09		1010			6 67	1051	7 22 1091				7 77		1133	8	36	1174	8 97 „1.21.1,			9 56
10500	782	4 28		842	4 96	895	5 57	943	6 16		990		6 75		1034			7 35	1076	7 96 1114				8.51		1152	910		1193	9 73	1232		10.'37
11000	814	4 80		871	5 60	923	6 20	971	6 80		1016		7 50		1059			8 10	1100	8 70 1139				930		1174	990		1212 1.0.50.		1250		11.20
11500	845	5 50		901	6 20	952	6 90	999	7 60		1042		8 20		1085			8 30	1125	9		50	:1164	0 20		1200	10.80		1233	11 40(1270			12.10
12000	877	6 10		931	7 00	981	7 70	1027	8 40		1069	9.00			1110			9 70	nso	1040			:1188	11 10		.1221	.1.1.80.		1258	12.40	1291 13.10
12500	909	6 80		962	7 70	1010	8 50'1055		9 20		1097	990			1136			1060	1176	11		30:1213		12.0Q.Ì1249			12.80		1284	13.50
13000	941	7 60		992	8 50	1039	9 40	1083	1010		1125	1090			1163			11.60	1201	1230;			1238	13.10		1273	13.30
13500	973	8 50		1023	9 40	1069	10 30	1112	11.10		1153	11 90			1191			12.60	1227	13.40:1264				14.10		1298	14,90
14000	1006	9 40		1054	10 40	1099	11 30	U41	12 10		1181	1230			1218			1370	1254	14.50:1290				15.30
14500	1038	10 30		1085	11 40	1129	12 30	1170	13 20		1203	14 10			^1245			14.90	1282	15.70 :
15000	1071	11.30		1116	12.40	1159	13.50	1200	14.40		1238	75.30			1275			76.10
12000	734	4 80		784	5 40	838	6 20	889	7 00		937		7 80		987			8 70	1034		950 1081Ì1050 1125:11 40: 1169:125Q:1211 :13.70
13000	791	6 00		831	6 60	883	7 40	930	8 20		977		9 10		1022			10 00	1068		1100 1110:n 90,1165 12.90: 1195 1390										1237		15.10
14000	848	7 40		880	7 90	928	8 80	974	9 70		1017		10 60		1060			11 60	1102			1260 1145:1360				1184 1450:1227,1,5.60.					1266		16.70
15000	907	9 10		932	9 50	974	1040	1019	11 40		1060		12 40		1101			13 40	1140			14 40 1179'1540 .3220...1.6.50. 1257 ; 17.50									1295		18.60
16000	966	11 00		985	11 40	1022	12 20	1064	13 30		1104	14 30			1142			15 30	1181			16.40 1217 17,50				1254 518.60			1292 ; 19.70
17000	1026	13 30		1040	13 50	1071	14 30	1170	15 30		1150	16 50				tl.8,6Mr.6Q..			JU2.1.	,.1S-60			lassifg'.sa			1292.2090
18000	1086	15 70		1097	1590	1122	16 60	1157	17 60		1135	18.80			1231			20.00	1265	521,10			1299:122 30
19000	1147	18 50		11S4	13 60	1175	19 20:1205		20.20		1241	21.40			1276			22.70
20000	1208	21.70		1212	21,70	1229	22.20	1255	23.00		1388	34.30
15000	704	5 08		772	6 10	829	6 94	882	7 80		933		871		983			9 68	1031		10 67 11077 I 11 75					1122	12 82		1166	13 87	1206		14 94
16000	741	6 00		807	7 13	863	8 08	913	8 93		963		9 91		1010			1089	1057		1193 illOl			i 12 99		1144	14 13		1187	15 29	1228		1641
17000	779	7 02		843	8 26	898	9 32	946	10 24		993		11 21		1039			1225	1083	13 31			'1127	14 42		1169	15	54	1203	16 75	1249		17	99
18000	817	8 17		878	9 51	933	10 68	980	11 70		1024		12 65		1069			1375	1112		1484		1153 15		97	1194	1716		1234	1834	1272		19 61
19000	855	9 44		915	10 87	968	12 16	1015	13 28		1058		14 30		1100			15 36	1142		16	54 :1181		17	68	1221	1889		1260	20 14	1.297	.21 3.9.
20000	894	10 84		951	12 37	1003	13 76	1050	15 00		1092		16 11		1132			1717	1172		18	35 ■1211		1958		1249	20.79		1286	22 07	1323 '23.39
21000	933	12 38		988	14 00	1038	15 50	1084	16.85		1126		18 07		1165			19 19	1203		20	32 ;i241		21 62		1.2.78 .2.2,90.			1314	24.17	1349 :25.S2
22000	972	14 06		1025	15 77	1074	17 37	1119	1884		1161		2017		1199			21 38	1235		22	54 .1273:		23ÌàXÌ308			25.16		1343	26.49	1377	527.82
23000	1011	1590		1062	17 69	mo	1940	1155	20 93		1196		22.42		1234			23 74	1269		24 97 51304;26.19					:1338	27.54		1373	28.98	1407 Ì30.36
24000	1051	1790		1100	13 78	1147	21 58	1190	23 27		1231		24 83		1268			.28,25	1304		27.58		;1337:	28	8S:	1370	30.13		1403	31,59	1437	■33.09
25000	1090	20 05		1138	22 03	1183	23 92	1226	25 72		1266		27 39 :1303:28.93						1333		30 36		Ì1371 :	31.71 :1403			33,03		1434	34 40

Alternate fan motor or drive is required

Field supplied drive required

Bhp — Brake horsepower

Rpm — Revolutions per minute

NOTES:

1Values in italics indicate that motor larger than optional fan motor is required

2Fan performance has deductions for unit casing losses, wet coil and clean standard filters

3Fan motor bhp is based on minimum voltages and 80 F air across motor

										EXTERNAL STATIC PRESSURE (in. wg)
	0.75			1. 60		1.25		1 50		1.75			2 00		2 25		2.50		2.75		3.Ò0		3.
	Rpm Bhp			Rpm	Bhp	Rpm	Bhp	Rpm	Bhp		Rpm	Bhp	Rpm	Bhp	Rpm	Bhp	Rpm	Bhp	Rpm	Bhp	Rpm	Bhp	Rpm	Bhp
	868	7 56		934	8 72	996	9 94	1054	1 1 2 0		Ilio	12 55	1165	13 85	1216	15 21	1266	1661	1314	18 06	1361	19 54	1406	21 CM
	901	871		963	9 90	1022	11 16	1079	12 46	1134		13 84	1186	15 29	1237	16 67	1286	18 11	1333	19 59	1378	21 12	1423	22 68
	935	10 02		993	11 20	1050	12 51	1106	13 88	1158		15 26	1209	16 75	1259	18 29	1307	19 75	1353	21 27	1397	22 83	1441	24 44
	963	11 45		1024	12 65	1080	140:	1133	1547		1185	16 88	1234	18 34	1282	19 94	1329	21 57	1375	23 12	1419	24 71
	1004	13 02		1058	14 30	1110	15 64	1162	17 10		1212	18 60	1260	20 16	1307	21 71	1352	23 40	1396	25 13	1440	26 78
	1038	14 71		1092	16 1 1	1141	17 44	1191	18 96		1240	20 49	1287	2 2 1 0	1332	23 73	1376	25 37	1420	27 15
	1074	1 6 53		1126	18 07	1175	19 47	1222	20 94		1269	22 56	1314	24 19	1359	25 89	1402	27 60	1444	29 32
	1109	18	50	1161	20 17	1208	21 67	1253	23 13		1298	24 78	1343	26.48	1386	28 20	1429	29 99
	1144	20	62	1196	22 42	1243	24 05	1287	25 58	1329		27 18	1373	28.95	1415	30 71
24000	1180	22	89	1231	24 83	1277	26.59	1320	28 22	1361		29.81	1403	31 56	1444	33.42
25000:1217		25 32		1266	27 40	1312 ;29.30		1355	;31.04	1395		32.70	1434	34 40	___

Alternate fan motor and drive required

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