unidades paquete zp de l marca carrier 1

8/20/2019 Unidades Paquete Zp de l Marca Carrier 1

1/20

Single Package Air-ConditioningUnits with:• easy installation design• corrosion-proof basepan• pre-painted steel cabinet

• sloped drain pan for improvedindoor air quality

• top cover service access• lightweight, compact constructio

Features/BenefitCompact, horizontal supplyand return unit, combin-ing easy installation andmaintenance with efficientperformance.

E a s y t o in s t a ll

T he 5 0 ZP units are sm all, com pact, ae a sy to h a n d le . E v e ry 5 0 Z P u n it h a san iden tical3 2 x 5 1 -in. foo tp rin t tom ake job site plann ing sim p le. T he cocise design uses less sh eet m etal an dm akes the 5 0 Z P un its ligh ter than othun its.T h e un it can be easily p o sitio n edon the jo bsite w ith th e h an d h olds buinto the un it basep an . D rop -in car-trid ge style h ea ters are u tilized to m inm ize in stallatio n tim e. T h e 5 0 Z P un itw a s de sign ed w ith p o ten tial safety h aa rd s in m in d . T h e re a re n o sh a rp e d gor corners w h ich cou ld injure a w o rker

To p c o v e r s e r v ic e a c c e s s

T he 5 0 ZP units are designed to be seviced from the top . T h e split-top de-sign allo w s ea sy ac cess fo r in stallatio nand m aintenance procedures o n theun it. R ou tine m ainten an ce tasks suchcoilclean ing are sp ed up w ithth ro ug h -th e-to p acce ss. M ultip le sidep a n e ls d o n o t n e e d to b e re m o v ed a sw ith o th er un its.

ProductData

50ZPSingle-Package Electric

Cooling Units

2 to 5 Nominal Tons

Copyright 1997 Carrier Corporation Form 50ZP-


2/20

N o - r u s t b a s e p a n w i t hin t e g r a t e d d r a in p a nT he 5 0 ZP units feature a tough , high-tech, com p osite m aterial basep an w ithintegrated drain p an . T h e com p ositem aterial elim in ates th e p o ten tial p ro b-lem s o f rustan d p rem ature rep lacem entw h ich are com m on w ith standard m etalbasepans.

E a c h 5 0 Z P b a se p a n is slo p e d toelim inate stand ing w ater p er A S H R A ES tandard 6 2 -8 9 .

D u r a b le p r e - p a in t e d s t e e lc a b i n e tT h e w atertigh t con structio n an dco rro sio n -resistan t n ish o f th e 5 0 Z Pun it w ill kee p it lo o kin g like n ew fo ryea rs. C arrier’s p ain t trea tm en t p ro cessen sures qu ality p ro tectio n ag ain st th eelem en ts.A com p act, lo w -p ro le designutilizes a lo uve red co il en clo sure fo rp ro tectio n ag ain st van da lism an d h aild a m a g e.

Indoor-air qualityA slop ed drain pa n m inim izes theam ou nt of stand ing w ater inside theun it, w h ich lim its alga e grow th . T h edrain pa n is m ade of a rust-p roo f m ate-rial an d w ill n o t de terio rate o r releasefo reign m atter in to th e co n ditio n ed air.

Lightweight, com pactc o n s t r u c t i o nT he 5 0 ZP unit is the lightest, m ostcom -pact packaged unit that C arrier hasever design ed. Its ligh t w eigh t (2 2 2 lbsfo r th e 5 0 Z P 0 2 4 u n it) m a k e s th e u n iteasier to han dle. T he low heigh t (2 2 -in.fo r 5 0 Z P 0 2 4 -0 3 6 , 3 0 -in . fo r 5 0 Z P 0 4 2 ,0 4 8 , a n d 3 4 -in . fo r 5 0 Z P 0 6 0 u n its)k e e p s d u c tw o rk to a m in im u m a n dm ak es th e un it less visible.

E ffi c ie n t , d e p e n d a b lep e r f o r m a n c eT h e 5 0 Z P u n its o ffe r 1 0 .0 S E E R (S e a -son alE nergy E f ciency R ate)coo lingp erform ance ef ciencies. T his high p er-fo rm an ce levelcan redu ce coo ling ex-p e n se s by a s m u c h a s 2 5 % co m p a re d toolder coo ling equip m ent (dep end ing onlo cal clim ate co n ditio n s). A h igh -ef ciency, m ulti-spe ed blow er m otorsystem en sures qu ality p erfo rm an ce w ithm ostduct system s. T he com puter-design ed blow er w heel is balanced forqu iet o p eratio n .

R u g g e d , r e l ia b l ec o n s t r u c t i o nT h e 5 0 Z P un its u tilize a structuralb eamdesign to form the fou r sides o f thecabin et. O nly 1 2 differen t p ieces of she et

m etal are used in th e un it con structio nto sim p lify th e un it fo r g rea ter reliab ility.T h e 5 0 Z P un its are built to last.

D u r a b l e , d e p e n d a b lec o m p o n e n t sC o m p r e s s o r s are design ed for highef ciency. E ach com p ressor is h erm eti-cally sealed ag ain st co n tam in atio n tohelp p rom ote lon ger life and dep end able

o p eratio n . V ibratio n isolatio n p ro vide squ iet op eration . R ecip ro catin g com p res-sors h ave in ternal h igh -p ressure an do vercurren t p ro tectio n .

D ir e c t -d r i ve m u l t is p e e d , P S C (p e r -m a n e n t s p l it c a p a c i t o r ) b l o w e rm o t o r is stan dard on allm o dels.

Dir ect- dr ive, PSC condenser - f anm o t o r s are design ed to h elp redu ceenergy con sum ption and p rovide forcooling op eration dow n to 4 0 F.

R e fr ig e r a n t s y s t e m is d esign ed top ro vide de p en da bility. L iqu id refrige ran tstraine rs are used to p ro m ote clean ,un restricted o p eratio n . E ach un it leave sth e facto ry w ith a full refrige ran t ch arge.R efrigerant service con ne ctio ns m akech eckin g o p eratin g p ressures easier.

Model number nomenclature

Table of contents P a g eFeatures/B ene ts ...... ...... ....... ...... ...... ...... ...... ...... .. 1 ,2M o d e l N u m b e r N o m e n c la tu re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2A R I C a p a c ity R a tin g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3P h y sic al D a ta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3A ccessories ...... ....... ...... ...... ...... ...... ...... ...... ...... 4 ,5B a se U n it D im e n sio n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 -8S election P rocedure ...... ...... ...... ...... ....... ...... ...... ...... . 9P e rfo rm a n c e D a ta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 -1 4E lectricalD ata ...... ....... ...... ...... ...... ...... ...... ...... .... 1 5C o n tro ls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6T ypicalInstallation ..... ... ... ... ... .... ... ... ... ... ... ... ... ... ... .. 1 7T ypicalW iring D iagram ....... ...... ...... ...... ...... ...... ...... . 1 7 ,1 8G u id e S p e ci c atio n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 9 ,2 0

2


3/20

ARI* capacity ratings

UNIT 50ZP NET COOLING CAPACITY†

(Btuh) STANDARD CFM SEER**

SOUND RATING††(dB)

024 22,800 800 10.0 80

030 30,000 1000 10.0 84

036 34,200 1200 10.0 84

042 40,000 1400 10.0 84

048 46,000 1600 10.0 84

060 57,000 2000 10.0 84LEGEND

db — Dry BulbdB — decibels (10 decibels = 1 bel)SEER — Seasonal Energy Efficiency Ratiowb — Wet Bulb

*Air Conditioning and Refrigeration Institute.†Rated in accordance with U.S. Government DOE (Department of Energy) test

procedures and/or ARI Standard 210/240-89.**All units have factory-installed time-delay relay.

††Rated in accordance with ARI Standard 270-84.

NOTES:1. Ratings are net values, reflecting the effects of circulating fan heat.2. Cooling Capacity Ratings are based on cooling standard:

80 F db/67 F wb indoor air entering temperature95 F db air entering outdoor unit

Physical dataUNIT 50ZP 024 030 036 042 048 060

OPERATING WEIGHT (lb) 222 236 250 297 310 350

COMPRESSOR TYPE Reciprocating

REFRIGERANT R-22Charge (lb) 3.0 3.9 4.7 4.4 6.1 7.5

REFRIGERANT METERING DEVICE Acutrol™ System

CONDENSER Copper Tubes, Aluminum Plate FinsRows...Fins/in. 1...17 1...17 2...17 1...17 2...17 2...17Total Face Area (sq ft) 7.9 7.9 6.2 11.1 8.6 10.7

CONDENSER FAN Propeller

CFM 1600 2000 2000 2600 2600 2800Nominal Rpm 825 1100 1100 1100 1100 1100Motor Hp 1 ⁄ 8 1 ⁄ 4 1 ⁄ 4 1 ⁄ 4 1 ⁄ 4 1 ⁄ 4Diameter (in.) 20 20 20 20 20 20

EVAPORATOR COIL Copper Tubes, Aluminum Plate FinsRows...Fins/in. 2...15 3...15 3...15 3...15 3...15 4...15Total Face Area (sq ft) 3.1 2.8 3.1 3.9 4.3 4.9

EVAPORATOR FAN MOTOR Direct DriveBlower Motor Size (in.) 10 x 8 10 x 8 10 x 8 10 x 9 10 x 9 10 x 10Nominal Cfm 800 1000 1200 1400 1600 2000Rpm Range 550-1000 550-1000 800-1050 800-1050 1000-1100 950-1100Number of Speeds 3 3 3 3 2 3*Factory Speed Setting Low Med Low Med Low LowMotor Hp 1 ⁄ 4 1 ⁄ 4 1 ⁄ 2 1 ⁄ 2 3 ⁄ 4 1

CONNECTING DUCT SIZES Round SquareSupply Air (in.) 14 13.9 x 13.9Return Air (in.) 14 13.9 x 27.8

FIELD-SUPPLIED RETURN AIR FILTER†Throwaway (in.) 24 x 24 24 x 24 24 x 24 24 x 24 24 x 30 24 x 30

*460-v motors are 2-speed only.†Required filter sizes shown are based on the ARI (Air Conditioning and Refrigeration Institute) rated

airflow at a velocity of 300 ft/min for throwaway type or 450 ft/min for high capacity type. Recom-mended filters are 1-in. thick.


4/20

Accessories

ACCESSORY

Outdoor Thermostat

Crankcase Heater (230-1-60)

Thermostat and Subbase

Electronic Programmable Thermostat

Controls Upgrade Kit

Time Guard II Kit

Low-Ambient Kit

Electric Heat with Single-Point Kit (5.0 to 20.0 kW)

E l ect r o n i c p r o g r ammab l e t h er mo s t at p ro vide s 2 -stag ehe atin g an d 2 -stage coo lin g con trol w ith rem o te com m un i-ca tio n ab ility.

T he r m o s t a t a n d s u b b a s e p ro vide he atin g an d coo lingun it con trol. T he subb ase p ro vides system an d fan sw itch-in g at th e th erm o stat lo catio n .

Lo w -am b i en t k it (Mo t o r m as t e r II device) a llo w s th eu se o f m e c h a n ic a l c o o lin g d o w n to o u td o o r a m b ie n t te m -p e ra tu re s a s lo w a s 0 ° F .

Solid-state Time Guard II device p rotects com p resso rby p reven tin g sho rt cyclin g.

C r a n k c a s e h e a t e r w arm s cran kcase o il to redu ce refrig-eran t m igratio n an d en sure p ro p er com p ressor lubrication .(R ecom m end ed on 2 0 8 /2 3 0 -v sing le-p hase un its in sizes0 2 4 -0 4 2 o n ly .)

E lect r i c h ea t er s p rovide heat in the un it w h en required.E a c h p a c k a g e h a s a h e a te r m o d u le th a t slid e s in to k e y e d

m o un tin g slo ts in th e fan in let. H eater sizes ran ge fro m 5 .0to 2 0 .0 kW . T he electric heater design allow s the use of asin gle-p o in t p o w er sup p ly fo r th e en tire un it, resultin g inlo w er in stalled co sts.

C o n t r o l s u p g r ad e k i t i n cl u d es high - an d low -p ressuresw itche s w h ich p ro vide ad ditio n al safety features an d p ro -tect th e un it fro m run n in g at un suitab le p ressures.

O u t d o o r t h e r m o s t a t brin gs secon d stage o f 2 -stag e elec-tric h eater o n lin e w h en th e o utdo o r-air tem p erature fallsbelow th e set p oint.

ELECTRIC HEATERS

ODS CATALOGORDERING NO. NOMINALCAPACITY (kW)USED WITH SIZES

024 030 036 042 048 060

ELECTRIC HEATERS (208/230 — SINGLE PHASE — 60 Hz)

CPHEATER026A00 5.0 X X X X




ELECTRIC HEATERS (208/230 V — 3 PHASE — 60 Hz)





ELECTRIC HEATERS (460 V — 3 PHASE — 60 Hz)

CPHEATER034A00 5.0 X

CPHEATER035A00 10.0 XCPHEATER036A00 15.0 X

CPHEATER037A00 20.0 X

LEGEND

OD S — Order Distribution System

NOTE: Electric heaters are rated at 240 v and 480 v. Refer to Multiplication Factors table on page 5 for other voltages.

4


5/20

THERMOSTATS AND SUBBASES

ODS CATALOGORDERING NO.

DESCRIPTION

TSTATCCN2S01-A Automatic Changeover — 3 Heat/2 Cool (Programmable Residential Thermostat)

TSTATCCP2S01-A Automatic Changeover — 3 Heat/2 Cool (Non-Programmable Residential Thermostat)

33CSPTN-01 Automatic Changeover — 2 Heat/2 Cool (Programmable Commercial Thermostat)

--HH01AD-45 Manual Changeover — 2 Heat/1 Cool (Non-Programmable Thermostat)

LEGEND

ODS — Order Distribution System

MULTIPLICATION FACTO RS

HEATER kWRATING

VOLTAGEDISTRIBUTION

V/3/60

MULTIPLICATIONFACTOR

240

200 .69208 .75230 .92240 1.00

480440 .84460 .92480 1.00

Example: 15.0 kW (at 240 v) heater on 208 v= 15.0 (.75 mult factor)= 11.25 capacity at 208 v


6/20

Base unit dimensions — 50ZP024-036

UNIT ELECTRICAL

CHARACTERISTICS

UNIT WT CENTER OF GRAVITY mm (in.)

Lb Kg X Y Z

50ZP024 208/230-1-60 222 101 355.6 (14.00) 508.0 (20.00) 241.3 (9.50)50ZP030 208/230-1-60 236 107 355.6 (14.00) 508.0 (20.00) 241.3 (9.50)50ZP036 208/230-1-60, 208/230-3-60 250 114 355.6 (14.00) 508.0 (20.00) 241.3 (9.50)

REQUIRED CLEARANCES TO COMBUSTIBLE MAT’L

Millimeters (in.)

Top of Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0D uc t S id e o f U nit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0S id e Opp os ite Du cts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0B o tto m o f U n i t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

NEC REQUIRED CLEARANCES

Millimeters (in.)

Between Units, Power Entry Side . . . . . . . . . . . . . . . . . 1066.8 (42.00)Unit and Ungrounded Surfaces, Power Entry Side . . . . . . . 914.0 (36.00)Unit and Block or Concrete Walls and Other Grounded

Surfaces, Power Entry Side . . . . . . . . . . . . . . . . . . . . 1066.8 (42.00)REQUIRED CLEARANCES FOR SERVICING

Millimeters (in.)

Condenser Coil Access Side . . . . . . . . . . . . . . . . . . . . . 762.0 (30.00)Power Entry Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . 762.0 (30.00)

(Except for NEC Requirements)Unit Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 914.0 (36.00)Side Opposite Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . 762.0 (30.00)

LEGEND

CG — Center of GravityN EC — National Electrical Code

NOTES:1. Clearances must be maintained to prevent recirculation of air from outdoor-

fan discharge, with the exception of the condenser coil (914 mm [36 in.]). Aremovable fence or barricade requires no clearance.

2. Dimensions are in millimeters. Dimensions in ( ) are in inches.

6


7/20

Base unit dimensions — 50ZP042,048

UNIT ELECTRICAL

CHARACTERISTICS


Lb Kg X Y Z

50ZP042 208/230-1-60, 208/230-3-60 297 135 355.6 (14.00) 508.0 (20.00) 304.8. (12.00)50ZP048 208/230-1-60, 208/230-3-60 310 141 355.6 (14.00) 508.0 (20.00) 304.8 (12.00)


Millimeters (in.)

Top of Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0D uc t S id e o f Un it . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0Side Opposite Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0B o tto m o f U n i t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0


Millimeters (in.)

Between Units, Power Entry Side . . . . . . . . . . . . . . . . . 1066.8 (42.00)Unit and Ungrounded Surfaces, Power Entry Side . . . . . . . 914.0 (36.00)Unit and Block or Concrete Walls and Other Grounded

Surfaces, Power Entry Side . . . . . . . . . . . . . . . . . . . . 1066.8 (42.00)REQUIRED CLEARANCES FOR SERVICING

Millimeters (in.)


(Except for NEC Requirements)U nit To p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 4.0 (36 .0 0)Side Opposite Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . 762.0 (30.00)

LEGEND

CG — Center of GravityN EC — National Electrical Code





8/20

Base unit dimensions — 50ZP060

UNIT ELECTRICAL

CHARACTERISTICS


Lb Kg X Y Z

50ZP060 230-1-60, 208/230-3-60, 460-3-60 350 159 355.6 (14.00) 508.0 (20.00) 355.6 (14.00)


Millimeters (in.)

Top of Un it . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0Du ct Si de of Un it . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0Side Opposite Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0B o tto m o f U n i t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0


Millimeters (in.)

Between Units, Power Entry Side . . . . . . . . . . . . . . . . . 1066.8 (42.00)

Unit and Ungrounded Surfaces, Power Entry Side . . . . . . . 914.0 (36.00)Unit and Block or Concrete Walls and Other Grounded

Surfaces, Power Entry Side . . . . . . . . . . . . . . . . . . . . 1066.8 (42.00)

REQUIRED CLEARANCES FOR SERVICING

Millimeters (in.)


(Except for NEC Requirements)Un it To p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 4.0 (36 .00 )Side Opposite Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . 762.0 (30.00)

LEGEND

CG — Center of GravityNEC — National Electrical Code




8


9/20

Selection procedure

I D et er mi n e co o l i n g an d h eat i n g r eq u i r emen t s atdesign conditions.

G iven :

R e q u ire d C o o lin g C a p a c ity (T C ) . . . . . . 3 4 ,0 0 0 B tu hS e n sib le H e a t C a p a c ity (S H C ) . . . . . .. 2 5 ,0 0 0 B tu hR e q u ire d H e a tin g C a p a c ity . . . . . .. . . . 1 5 ,0 0 0 B tu hO utdo or E ntering -A ir Tem perature ........... 9 5 FIn do o r E n terin g-A ir

T e m p e ra tu re . .. .. .. .. .. .. . 8 0 F e d b; 6 7 F e w bInd oo r-A ir Q uan tity ................... 1 2 0 0 cfmE xternal S tatic P ressure .............. 0 .2 0 in. w gE lectrical C h aracteristics (V -P h -H z). .. .. .. 2 3 0 -1 -6 0

II S el ect u n i t b as ed o n r eq u i r ed co o l in g cap a cit y .

E nter C oo ling C ap acities table at con den ser en terin gte m p e ra tu re o f 9 5 F , in d o o r a ir e n te rin g a t 1 2 0 0 c fma n d 6 7 F e w b . T h e 5 0 Z P 0 3 6 u n it p ro v id e s a to ta lc o o l-in g c a p a c ity o f 3 4 ,2 0 0 B tu h a n d a se n sib le h e a t c a -p a c ity o f 2 5 ,3 0 0 B tu h .

Fo r ind oo r-air tem p erature other than 8 0 F edb, cal-culate sen sible h ea t ca p acity co rrectio n , a s req uired ,using the fo rm ula fo un d in N ote 4 follow in g the C oo l-

in g C ap acities tab les.N O T E : U n it rating s are n et cap acities.

III S el ect el ect r ic h ea t .

T he requ ired he ating cap acity is 1 5 ,0 0 0 B tuh (given).D eterm in e th e electric h eat cap acity in kW .

1 5 ,0 0 0 B tu h= 4 .4 k W o f h e a t re q u ire d

3 4 1 4 B tu h / kW

E nter the E lectric H eaters table on p age 4 for 2 0 82 4 0 , sin g le -p h a se , 5 0 Z P 0 3 6 u n it. T h e 5 -k W h e a te r2 4 0 v m ost closely satis es the heating required. Tcalculate kW at 2 3 0 v,m ultip ly the heater kW by m utip licatio n facto r 0 .9 2 fo un d in th e M ultip licatioF a c to rs ta b le o n p a g e 5 .

5 kW x 0 .9 2 = 4 .6 kW4 .6 kW x 3 4 1 4 B tu h/ kW = 1 5 ,7 0 4 B tu h

I V D e t e r m i n e f a n s p e e d a n d p o w e r r e q u i r e m e n tat d es i g n co n d i t io n s .

B efo re en terin g th e air de livery tab les, ca lculate thto talstatic p ressure req uired .F ro m th e given ,F ilter P resure D ro p tab le, th e A ccessory E lectric H eat P ressuD ro p tab le, an d th e W et C o ilP ressure D ro p tab le, fin

E xtern al static p ressu re 0 .2 0 in . wF ilter 0 .1 0 in . wE lectric H eat 0 .1 3 in . wW et C o il 0 .0 9 in . w

T otal static p ressu re 0 .5 2 in . w

E n ter th e table fo r D ry C o ilA ir D elivery — H o rizon t

D ischarge. A t 0 .5 in. w g externa l static p ressure anhigh sp eed, th e m o to r de livers 1 2 9 7 cfm . In terp o laing for 0 .5 2 in. w g delivers 1 2 7 6 cfm , w h ich satisth e jo b requ irem en ts.


10/20

Performance data

COOLING CAPACITIES

50ZP024

TEMP (F)AIR ENT

COND

EVAP AIR — CFM/BF

700/0.12 800/0.14 900/0.15

Evap Air — Ewb (F)

72 67 62 72 67 62 72 67 62

85TC 23.9 23.0 21.4 23.2 22.5 21.3 22.3 21.6 21.0SHC 10.9 14.5 17.9 10.5 14.4 18.3 10.1 13.9 18.2

kW 2.17 2.15 2.12 2.18 2.17 2.15 2.18 2.18 2.17

95TC 24.6 22.6 20.5 24.5 22.8 20.8 23.5 22.6 20.9SHC 11.4 14.8 17.8 11.5 15.4 18.7 11.1 15.6 19.2kW 2.36 2.31 2.25 2.39 2.35 2.29 2.39 2.37 2.33

105TC 24.1 21.6 19.3 24.3 21.9 19.7 24.1 22.1 19.9SHC 11.5 14.7 17.4 11.8 15.4 18.4 11.9 16.0 19.2kW 2.52 2.44 2.36 2.56 2.48 2.41 2.59 2.53 2.46

115TC 22.9 20.3 18.0 23.2 20.6 18.3 23.3 20.7 18.7SHC 11.2 14.3 16.9 11.7 15.1 17.9 12.0 15.8 18.7kW 2.66 2.56 2.47 2.70 2.61 2.52 2.74 2.65 2.58

50ZP030

TEMP (F)AIR ENT

COND

EVAP AIR — CFM/BF

875/0.07 1000/0.08 1125/0.09

Evap Air — Ewb (F)72 67 62 72 67 62 72 67 62

85TC 31.6 30.0 28.5 32.1 30.6 29.1 32.6 31.1 29.6SHC 21.6 23.7 25.8 22.9 25.2 27.6 24.2 26.6 29.1kW 3.14 3.09 3.04 3.21 3.17 3.12 3.28 3.23 3.19

95TC 32.1 29.5 26.8 32.6 30.0 27.5 33.1 30.6 28.1SHC 19.9 22.4 25.0 21.0 23.7 26.4 22.1 24.9 27.7kW 3.24 3.22 3.20 3.31 3.30 3.28 3.38 3.37 3.36

105TC 32.6 28.9 25.1 33.1 29.5 25.8 33.5 30.0 26.6SHC 18.2 21.1 24.1 19.1 22.2 25.3 20.0 23.2 26.4kW 3.34 3.34 3.35 3.41 3.43 3.45 3.47 3.50 3.53

115TC 29.3 27.8 26.3 29.8 28.2 26.7 30.1 28.5 27.0SHC 15.2 17.4 19.6 16.0 18.5 21.0 16.7 19.5 22.3kW 3.77 3.71 3.64 3.85 3.78 3.71 3.91 3.85 3.78

LEGEND

BF — Bypass FactorEwb — Entering Wet BulbkW — Total Unit Power InputSHC — Sensible Heat Capacity, 1000 BtuhTC — Total Cooling Capacity, 1000 Btuh (net)

NOTES:1. Ratings are net; they account for the effects of the indoor-fan motor

power and heat.2. Direct interpolation is permissible. Do not extrapolate.3. The following formulas may be used:

sensible capacity (Btuh)t = t – ldb edb

1.10 x cfm

t = Wet-bulb temperature corresponding to enthalpy of airlwbleaving indoor coil (h )lwb

total capacity (Btuh)h = h – lwb ewb

4.5 x cfm

Where: h = Enthalpy of air entering indoor coilewb

4. The SHC is based on 80 F edb temperature of air entering indoorcoil.Below 80 F edb, subtract (corr factor x cfm) from SHC.Above 80 F edb, add (corr factor x cfm) to SHC.Correction Factor = 1.10 x (1 – BF) x (edb – 80).

1 0


11/20

COOLING CAPACITIES (cont)

50ZP036

TEMP (F)AIR ENT

COND

EVAP AIR — CFM/BF

1050/0.08 1200/0.10 1350/0.11


72 67 62 72 67 62 72 67 62

85TC 38.8 35.7 32.3 39.6 36.2 33.0 39.7 36.8 33.5SHC 18.9 24.5 29.6 19.7 26.0 31.5 20.3 27.6 33.2

kW 3.65 3.53 3.42 3.74 3.61 3.51 3.80 3.70 3.59

95TC 36.9 33.7 30.5 37.5 34.2 31.1 37.8 34.6 31.8SHC 18.2 23.8 28.7 19.1 25.3 30.5 19.9 26.7 31.8kW 3.83 3.71 3.59 3.92 3.79 3.67 3.99 3.87 3.76

105TC 34.9 31.7 28.6 35.5 32.1 29.3 35.6 32.5 30.2SHC 17.6 23.0 27.7 18.6 24.5 29.3 19.1 25.9 30.2kW 4.02 3.88 3.75 4.11 3.96 3.84 4.17 4.03 3.94

115TC 32.8 29.7 26.8 33.0 30.1 27.7 33.4 30.4 28.5SHC 17.0 22.4 26.7 17.7 23.8 27.7 18.5 25.2 28.5kW 4.20 4.05 3.91 4.27 4.14 4.03 4.36 4.21 4.13

50ZP042

TEMP (F)AIR ENT

COND

EVAP AIR — CFM/BF

1225/0.11 1400/0.12 1575/0.14

Evap Air — Ewb (F)72 67 62 72 67 62 72 67 62

85TC 46.2 39.0 36.3 47.0 38.1 36.5 47.5 37.0 35.9SHC 22.1 25.6 31.8 23.0 25.4 32.9 23.9 24.8 33.0kW 4.19 3.89 3.81 4.28 3.92 3.88 4.37 3.95 3.93

95TC 43.7 38.4 34.7 44.3 40.0 35.2 44.7 38.3 35.5SHC 21.2 26.1 31.5 22.1 27.2 33.2 23.0 27.8 34.5kW 4.39 4.17 4.03 4.49 4.24 4.13 4.58 4.30 4.21

105TC 41.1 36.5 32.8 41.7 36.9 33.2 41.9 37.2 33.8SHC 20.3 25.7 30.8 21.2 27.2 32.6 22.0 28.5 33.7kW 4.60 4.40 4.25 4.70 4.49 4.34 4.78 4.57 4.44

115TC 38.4 34.2 30.5 38.8 34.6 31.3 39.1 35.0 32.1SHC 19.4 25.1 29.8 20.3 26.6 31.3 21.1 28.1 32.1kW 4.81 4.62 4.45 4.89 4.71 4.56 4.98 4.80 4.68

LEGEND





1.10 x cfm

t = Wet-bulb temperature corresponding to enthalpy of lwbleaving indoor coil (h )lwb


4.5 x cfm


4. The SHC is based on 80 F edb temperature of air entering indocoil.Below 80 F edb, subtract (corr factor x cfm) from SHC.Above 80 F edb, add (corr factor x cfm) to SHC.Correction Factor = 1.10 x (1 – BF) x (edb – 80).


12/20

Performance data (cont)

COOLING CAPACITIES (cont)

50ZP048

TEMP (F)AIR ENT

COND

EVAP AIR — CFM/BF

1400/0.06 1600/0.07 1800/0.08


72 67 62 72 67 62 72 67 62

85TC 45.0 43.8 41.7 43.2 42.2 41.5 41.5 40.7 40.1SHC 20.7 29.4 37.8 19.8 28.4 38.9 19.8 27.6 37.4

kW 4.42 4.41 4.34 4.42 4.42 4.42 4.44 4.44 4.44

95TC 46.7 43.6 39.6 45.9 45.5 40.1 43.6 42.7 40.5SHC 22.8 30.8 37.4 22.1 32.1 39.5 21.4 32.1 40.4kW 4.88 4.77 4.60 4.89 4.86 4.72 4.90 4.90 4.83

105TC 45.5 41.1 37.1 45.8 41.5 38.0 45.1 41.7 38.9SHC 23.1 30.1 36.4 23.9 32.0 38.0 24.1 33.7 38.8kW 5.23 5.03 4.85 5.33 5.14 4.98 5.38 5.25 5.12

115TC 42.6 38.1 34.6 42.9 38.5 35.7 43.2 38.7 36.7SHC 22.3 29.2 34.6 23.4 31.2 35.7 24.4 33.0 36.6kW 5.48 5.26 5.09 5.59 5.38 5.25 5.70 5.49 5.39

50ZP060

TEMP (F)AIR ENT

COND

EVAP AIR — CFM/BF

1750/0.06 2000/0.07 2250/0.08

Evap Air — Ewb (F)72 67 62 72 67 62 72 67 62

85TC 65.5 62.2 54.5 63.4 63.0 52.8 61.2 63.7 50.8SHC 30.8 41.7 48.2 30.0 44.1 47.4 29.2 46.5 46.1kW 6.22 6.16 5.80 6.23 6.30 5.82 6.23 6.43 5.84

95TC 65.0 58.6 52.4 65.3 59.0 53.0 64.3 60.3 53.1SHC 31.4 40.5 47.8 32.4 43.2 50.7 32.5 45.7 52.3kW 6.78 6.55 6.21 6.90 6.72 6.35 6.95 6.86 6.47

105TC 61.7 55.3 49.5 62.5 55.7 50.4 62.9 56.0 51.4SHC 30.4 39.0 46.9 32.0 41.2 49.8 33.2 43.2 51.3kW 7.22 6.87 6.60 7.38 7.01 6.76 7.51 7.14 6.93

115TC 57.9 51.7 46.3 58.5 52.5 47.7 58.9 52.8 49.0SHC 29.2 37.8 45.6 30.5 40.4 47.6 31.8 42.9 49.0kW 7.60 7.27 6.97 7.75 7.43 7.17 7.88 7.57 7.37

LEGEND





1.10 x cfm

t = Wet-bulb temperature corresponding to enthalpy of airlwbleaving indoor coil (h )lwb


4.5 x cfm


4. The SHC is based on 80 F edb temperature of air entering indoorcoil.Below 80 F edb, subtract (corr factor x cfm) from SHC.Above 80 F edb, add (corr factor x cfm) to SHC.Correction Factor = 1.10 x (1 – BF) x (edb – 80).

1 2


13/20

WET COIL PRESSURE DROP

UNIT SIZE50ZP

AIRFLOW(cfm)

PRESSURE DROP(in. wg)

024

600 0.02

700 0.05

800 0.06

900 0.07

030

900 0.06

1000 0.061200 0.08

036

1000 0.07

1200 0.09

1400 0.11

1600 0.12

042

1000 0.04

1200 0.06

1400 0.08

1600 0.09

048

1400 0.07

1600 0.08

1800 0.09

060

1700 0.07

1800 0.082100 0.09

2300 0.10

FILTER PRESS URE DROP (in. wg)

UNITSIZE50ZP

FILTERSIZE(in.)

CFM

500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 230

024-042 24 × 24 0.06 0.07 0.08 0.08 0.09 0.09 0.09 0.10 0.11 0.12 0.14 0.15 — — — — — — —

048,060 24 × 30 — — — — — — — — 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.1

ACCESS ORY ELECTRIC HEAT P RESSURE DRO P (in. wg)

CFM

Heater kW 600 800 1000 1200 1400 1600 1800 2000 2200

5-20 0.06 0.08 0.10 0.13 0.15 0.18 0.20 0.23 0.25


14/20

Performance data (cont)

DRY COIL AIR DELIVERY* — HORIZONTAL DISCHARGE (Dedu ct 1 0 % for 2 0 8 Volt O pe ra tion)

UNIT50ZP

MOTORSPEED

AIRDELIVERY

208 AND 460 VOLT HORIZONTAL DISCHARGE

External Static Pressure (in. wg)

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

024

Low Watts 288 285 282 279 274 268 261 — —

CFM 875 820 802 734 668 582 478 — —

Med Watts 390 383 378 369 360 350 340 — —

CFM 1131 1090 1038 978 917 830 721 — —

High Watts 528 520 510 495 480 460 450 — —CFM 1391 1338 1285 1200 1115 1018 920 — —

030

Low Watts 288 285 282 279 274 268 261 — —

CFM 875 820 802 734 668 582 478 — —

Med Watts 390 383 378 369 360 350 340 — —

CFM 1131 1090 1038 978 917 830 721 — —

High Watts 528 520 510 495 480 460 450 — —

CFM 1891 1338 1285 1200 1115 1018 920 — —

036

Low Watts 470 450 445 410 388 359 326 311 —

CFM 1302 1264 1204 1120 1008 950 863 751 —

Med Watts 450 435 420 400 380 345 338 321 —

CFM 1231 1218 1205 1163 1081 940 873 783 —

High Watts 660 635 610 575 540 505 485 460 —

CFM 1700 1660 1581 1450 1297 1190 1095 989 —

042

Low Watts 478 458 440 411 378 350 327 317 —

CFM 1303 1270 1224 1179 1126 1022 911 816 —

Med Watts 481 468 450 438 404 370 338 320 —CFM 1310 1280 1241 1181 1110 1022 943 811 —

High Watts — 798 678 647 618 578 540 500 460

CFM — 1736 1688 1618 1510 1421 1309 1187 1060

048Low

Watts — — 801 760 730 688 650 600 570CFM — — 1898 1841 1757 1682 1564 1429 1365

High Watts — — 870 842 818 782 696 632 628

CFM — — 2000 1903 1799 1718 1625 1446 1333

060†

Low Watts 890 850 810 790 735 680 580 480 422

CFM 1834 1820 1791 1762 1703 1640 1415 1159 950

Med Watts 1040 1018 1001 958 896 840 800 650 580

CFM 2230 2202 2160 2122 2052 1926 1752 1468 1121

High Watts 1073 1038 1000 950 890 835 790 691 575

CFM 2230 2102 2025 1960 1901 1855 1791 1588 1202

*Air delivery values are based on operating voltage of 230 v or 460 v,

dry coil, without filter or electric heater. Deduct wet coil, filter, and elec-tric heater pressure drops to obtain external static pressure availablefor ducting.

†460-v motors have 2 speeds (size 060 only).

NOTES:

1. Do not operate the unit at a cooling airflow that is less than 350 cfmfor each 12,000 Btuh of rated cooling capacity. Evaporator-coil frost-ing may occur at airflows below this point.

2. Dashes indicate portions of the table that are beyond the blower mo-tor capacity or are not recommended.

1 4


15/20

Electrical data

UNIT50ZP

NOMINALVOLTAGE(V-Ph-Hz)

VOLTAGERANGE

COMPRESSOR OFM IFM ELECTRIC HEAT POWER SUPPLY DISCONNECT

SIZE

Min Max RLA LRA FLA FLA Nominal kW* FLA MCA MOCP FLA LRA

024 208/230-1-60 187 254 10.9 61.0 0.9 2.4 —/— —/— 16.9/ 16.9 20/ 20 16/ 16

683.8/ 5.0 18.1/20.8 25.6/ 29.0 30/ 30 24/ 277.5/10.0 36.1/41.7 48.1/ 55.1 50/ 60 44/ 51

030 208/230-1-60 187 254 15.2 69.4 1.5 2.4

—/— —/— 22.9/ 22.9 30/ 30 22/ 22

793.8/ 5.0 18.1/20.8 25.6/ 29.0 30/ 30 24/ 277.5/10.0 36.1/41.7 48.1/ 55.1 50/ 60 44/ 51

11.3/15.0 54.2/62.5 70.7/ 81.1 80/ 90† 65/ 75

036

208/230-1-60 187 254 15.9 86.0 1.5 2.8

—/— —/— 24.2/ 24.2 30/ 30 23/ 23

963.8/ 5.0 18.1/20.8 26.1/ 29.5 30/ 30 24/ 277.5/10.0 36.1/41.7 48.6/ 55.6 50/ 60 45/ 5111.3/15.0 54.2/62.5 71.2/ 81.6 80/ 90† 66/ 7515. 0/ 20. 0 72.2/83.3 93. 6/ 107. 7 100/110† 86/ 99

208/230-3-60 187 254 8.9 64.5 1.5 2.8

—/— —/— 15.4/ 15.4 20/ 20 15/ 15

743.8/ 5.0 10.4/12.0 16.5/ 18.5 20/ 20 15/ 177.5/10.0 20.8/24.1 29.6/ 33.6 30/ 35 27/ 31

11.3/15.0 31.3/36.1 42.6/ 48.6 45/ 50 39/ 4515.0/20.0 41.7/48.1 55.6/ 63.6 60/ 70† 51/ 59

042

208/230-1-60 187 254 18.5 97.6 1.5 2.8

—/— —/— 27.4/ 27.4 35/ 35 26/ 26

1073.8/ 5.0 18.1/20.8 27.4/ 29.5 35/ 35 26/ 277.5/10.0 36.1/41.7 48.6/ 55.6 50/ 60 45/ 51

11.3/15.0 54.2/62.5 71.2/ 81.6 80/ 90† 66/ 7515. 0/ 20. 0 72.2/83.3 93. 8/ 107. 7 100/110† 86/ 99

208/230-3-60 187 254 10.9 73.0 1.5 2.8

—/— —/— 17.9/ 17.9 25/ 25 17/ 17

833.8/ 5.0 10.4/12.0 17.9/ 18.5 25/ 25 17/ 177.5/10.0 20.8/24.1 29.6/ 33.6 30/ 35 27/ 31

11.3/15.0 31.3/36.1 42.6/ 48.6 45/ 50 39/ 4515.0/20.0 41.7/48.1 55.6/ 63.6 60/ 70† 51/ 59

048

208/230-1-60 187 254 21.3 107.0 1.5 4.2

—/— —/— 32.3/ 32.3 40/ 40 31/ 31

12111.3/15.0 54.2/62.5 72.9/ 83.4 80/ 90† 67/ 7715 .0/20.0 7 2.2/83 .3 95 .5/109 .4 1 00 /11 0† 8 8/10 1

208/230-3-60 187 254 12.3 73.0 1.5 4.2

—/— —/— 21.1/ 21.1 25/ 25 21/ 21

873.8/ 5.0 10.4/12.0 21.1/ 21.1 25/ 25 21/ 217.5/10.0 20.8/24.1 31.3/ 35.3 35/ 40 29/ 32

11.3/15.0 31.3/36.1 44.3/ 50.4 45/ 60 41/ 4615.0/20.0 41.7/48.1 57.4/ 65.4 60/ 70† 53/ 60

060

230-1-60 207 254 26.9 128.0 1.4 6.2 — — 41.2 50 40

14120.0 83.3 111.9 125† 103

208/230-3-60 187 254 17.7 128.0 1.4 6.2

—/— —/— 29.7/ 29.7 35/ 35 29/ 29

1463.8/ 5.0 10.4/12.0 29.7/ 29.7 35/ 35 29/ 297.5/10.0 20.8/24.1 33.8/ 37.8 35/ 40 31/ 35

11.3/15.0 31.3/36.1 46.8/ 52.9 50/ 60 43/ 4915.0/20.0 41.7/48.1 59.9/ 67.9 60/ 70† 55/ 62

460-3-60 414 508 9.0 63.0 0.7 3.2

— — 15.2 20 15

715.0 6.0 15.2 20 15

10.0 12.0 19.0 20 1815.0 18.0 26.6 30 2420.0 24.1 34.1 35 31

LEGEND

FLA — Full Load AmpsHACR — Heating, Air Conditioning and RefrigerationIFM — Indoor (Evaporator) Fan MotorLRA — Locked Rotor AmpsMCA — Minimum Circuit AmpsMOCP — Maximum Overcurrent ProtectionNEC — National Electrical CodeOFM — Outdoor (Condenser) Fan MotorRLA — Rated Load Amps

*Heater capacity (kW) is based on heater voltage of 208 v, 240 v, or480 v. If power distribution voltage to unit varies from rated heater voltage, heaterkW will vary accordingly.

†Fuse or HACR circuit breaker.

NOTES:1. In compliance with NEC requirements for multimotor and combination load and

equipment (refer to NEC Articles 430 and 440), the overcurrent protective de-vice for the unit shall be fuse or HACR breaker.

2. Unbalanced 3-Phase Supply VoltageNever operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percentage of voltageimbalance.

% Voltage Imbalance

max voltage deviation from average voltage= 100 x

average voltage

Example: Supply voltage is 460-3-60

AB = 452 vBC = 464 vAC = 455 v

452 + 464 + 455Average voltage =

3= 457

Determine maximum deviation from average voltage:(AB) 457 − 452 = 5 v(BC) 464 − 457 = 7 v(AC) 457 − 455 = 2 v

Maximum deviation is 7 v.

Determine percentage of voltage imbalance:7

% Voltage imbalance = 100 x457

= 1.53%

This amount of phase imbalance is satisfactory as it is below the maximu

allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2% con-tact your local electric utility company immediately.


16/20

Controls

S e q u e n c e o f o p e r a t io n

Cooling

N O T E : W ith th e F A N sw itc h in th e O N p o sitio n , 2 4 v issup p lied to th e in do o r-fan relay (IF R ) th ro ug h th e G term i-n alo n th e th erm o stat. T h is voltage en ergizes th e co ilo f th econ tacto r, clo sin g th e n o rm ally-o p en seto f con tracts w h ichp rovide con tin uo us p ow er to the in do or-fan m o to r (IF M ).M o v in g th e F A N sw itc h b a c k to th e A U T O . p o sitio n , p ro -

viding th ere is n ot a call fo r coo lin g, deen ergizes the IF R ,o p e n s th e IF R c o n ta c ts, a n d d e e n e rg ize s th e IF M . T h e F A Nsw itch in A U T O . p osition cycles up on a callfo r coo ling .

O n a callfor coo ling , 2 4 v is sup p lied to the com p ressorcon tactor (C )an d IFR sim ultaneo usly throu gh the Y and Gterm in als o f th e th erm o stat, respe ctively. O n un its w ith aco m p resso r tim e de lay relay, th ere is a bu ilt-in , 5 -m in ute

(± 4 5 secon ds)d elay betw een com p ressor starts. E n ergiz-ing the con tacto r closes th e no rm ally-o p en set o f con tactssup p lying p ow er to bo th the com p ressor and ou tdo or-fanm otor (O FM ). E ne rgizin g the IFR closes th e no rm ally-o p ense t o f c o n ta c ts p ro v id in g p o w e r to th e IF M . O n th e lo s s o fth e c a ll fo r c o o lin g , 2 4 v is re m o v e d fro m b o th th e c o n -tactor and IFR and op ening bo th the con tacts sup p lyingp o w e r to co m p re sso r/ O F M a n d IF M .

H eat i n g — If acc esso ry electric h ea ters a re in stalled , o n acall for heat, circuit R -W is m ade through the therm ostatcon tacts. C ircuit R -G is m ade w h ich energizes the IFR . Ifthe he aters are staged ,th en the the rm ostat closes a secon dset of con tacts (W 2 ) w hen secon d stage is required. W henth erm o statis satis ed, co n tacts o p en ,d een ergizin g th e h eaterrelay and the IFR .

1 6


17/20

Typical installation

Typical wiring diagram

Power WiringControl Wiring

Outdoor Airflow

Indoor Airflow

*Separate disconnect per NEC(National Electrical Code) requiredfor electric heater when single-point connection is not used.

ELECTRIC HEATER WIRING


18/20

Typical wiring diagram (cont)

LEGEND

AWG — American Wire GageC — Contactor, CompressorCAP — CapacitorCOMP — Compressor MotorEQUIP — EquipmentFL — Fuse LinkFU — FuseGND — GroundHR — Heater Relay

(Strip Heat)IFM — Indoor Fan MotorIFR — Indoor-Fan RelayIP — Internal ProtectorOFM — Outdoor-Fan MotorQT — Quadruple TerminalTDR — Time Delay RelayTRAN — Transformer

Field Splice

Marked Wire

Terminal (Marked)

Terminal (Unmarked)

Terminal Block

Splice

Splice (Marked)

Factory Wiring

Field Control Wiring

Field Power WiringAccessory or Optional Wiring

To indicate common potentialonly, not to represent wiring

1 8


19/20

Guide specifications

Packaged Rooftop Cooling Unit with Elec-tric Heat — Constant Volume Application

HVAC Guide Sp ecifications

S ize R a n g e : 2 t o 5 To n s , N o mi n al C o o lin g

C a rrie r M o d e l N u m b e r: 5 0 Z P

P a r t 1 — G e n e r a l

1 .0 1 S Y S T E M D E S C R IP T IO N

O u td o o r ro o fto p / slab m o u n ted ,e lectrically co n tro lledco o lin g un it utilizin g a recip ro catin g co m p resso r fo rco o lin g du ty an d o p tio n ale lectric h eaters fo r h eatin gdu ty. U n it sh all disch arge sup p ly air h o rizon tally assho w n on con tract draw ings.

1 .0 2 Q U A L IT Y A S S U R A N C E

A . U nitshallbe rated in accordan ce w ith A R IS tandards2 1 0 / 2 4 0 -8 9 a n d 2 7 0 -8 4 . D e sig n e d in a cco rd a n cew ith U L S tand ard.

B . U nit shall be U L listed as a total p ackage for safetyreq uirem en ts.

C . R o o f c u rb sh a ll b e d e sig n e d to co n fo rm to N R C A

S tan da rds.D . In sulation an d adh esive shallm eetN F PA 9 0 A requ ire-

m e n ts fo r fl a m e sp re a d a n d sm o k e g e n e ra tio n .

1 .0 3 D E L IV E R Y , S T O R A G E A N D H A N D L IN G

U n it shall be sto red an d h an dled p er m an ufacturer’srecom m en dation s.

P a r t 2 — P r o d u c t s

2 .0 1 E Q U IP M E N T

A . G eneral:

F acto ry assem bled sin gle p iece coo lin g un it. C o n -tain ed w ith in th e un it en clo sure shall be all facto ryw irin g, p ip in g ,co n tro ls,refrige ran tch arge (R -2 2 ),a n d

spe cial fea tures requ ired p rio r to eld start-up .B . U n it C a b in e t:

1 . U n it cabinet shall be con structed of ph osph ated,bo n de rized, zin c-co ated p re-p ain ted stee l.

2 . B asep an m ade of a sing le-p iece, n on -corrosive,co m p o site m aterial.

3 . Ind oo r blow er com p artm ent interior cabinet sur-faces shallbe in sulated w ith a m in im um 1⁄2-in .th ick ,

exible berglass in sulatio n , coa ted o n th e air sidew ith alu m in u m fo il.

4 . C a b in e t p a n e ls sh a ll b e e a sily re m o v a b le fo rservicin g .

5 . U nit shallh ave a slop ed no n-corrosive drain p anth a t c o n fo rm s to A S H R A E S ta n d ard 6 2 -8 9 .

6 . U n it in s u la tio n c o n fo r m s to A S H R A E S ta n d a rd6 2 P .

C . F a n s :

1 . In d o o r B lo w e r (E v a p o ra to r F a n ):

a . F a n sh a ll b e 2 - o r 3 -sp e e d d ire ct d riv e sh o w n o n th e e q u ip m e n t d ra w in g s .

b. Fan w h eelshallbe m ade from steel,be do ubin let typ e, h ave fo rw ard curved blad es w ithco rro sio n resistan t n ish, an d be dy n am icaba lan ced.

2 . O utdo or (con den ser) fan shall be of the direcdriven p ro p eller typ e w ith alum in um blad es rieted to co rro sio n resistan t stee lsp id ers. It sha llbdy n am ically ba lan ced , an d discha rge air verticaupw ards.

D . C o m p re sso r:

F ully h erm etic; recip ro catin g typ e w ith in tern al anex tern al vib ratio n iso latio n .

E . C o ils:

1 . E vapo rator and con den ser coils shallh ave alumnu m p late ns m echan ically bo nd ed to seam lecop p er tub es w ith all jo in ts brazed.

2 . T ube she eto p en ing s sh allbe b elled to p revent tubw ear.

3 . O utdo o r coilshallbe p rotected by m etallo uverep an els.

F. R efrigerant C o m p on ents:

1 . R efrigerant com p on ents shallb e of the A cutrolfeed system typ e.

2 . S ervice gage con nection s on suction , dischargan d liq u id lin es.

3 . A bility to ro ute ga ge h o ses th ro ug h un itside p an

G . C o ntrols:

U n it sha llbe co m p lete w ith self-co n tain ed lo w -vo ltag

co n trol circuit.H . O p eratin g C h aracteristics:

1 . U n it shall be capable of starting and run ning 1 1 5 F a m b ie n t o u td o o r te m p e ra tu re p e r m a xm u m lo a d c rite ria o f A R I S ta n d a rd 2 1 0 -8 9 .

2 . C o m p ressor w ith stand ard con trols shall be cp a b le o f o p e ra tio n d o w n to 4 0 F a m b ie n t o u td o otem p erature.

I. E lectrical R eq u irem en ts:

A llun itp o w er w irin g sha llen ter un itca bin et at a sin glo ca tio n .

J. M otors:

1 . C o m p re sso r m o to rs sh a ll b e o f th e re frig e racoo led type w ith line break therm al and curreo verlo ad p ro tectio n .


20/20

Guide specifications (cont)

2 . A ll fan m o tors sha ll ha ve p erm an en tly lubricatedbearing s, and inh eren t autom atic reset the rm alo verlo ad p ro tectio n .

3 . O utdo or (con den ser) fan m otor shall b e totallyen clo sed.

K . S p ecialF eatures:

1 . L o w A m b ie n t P a ck ag e:

P ackag e sh all con sist o f a solid-state con tro l an dco n den ser co iltem p erature sensor fo r con tro llin go utdo o r-fan m o to r o p eratio n ,w h ich shallallo w un itto o p e ra te d o w n to 0 ° F o u td o o r a m b ie n t te m -p erature.

2 . H eatin g S ectio n:

a. E q uip p ed w ith eld-in stalled electric resis-tan ce h ea ter(s) o f th e ch aracteristics sho w nin the equip m ent schedule.

b . H e a te r e le m e n ts sh a ll b e o p e n w ire ty p e , a d -equa tely sup p orted an d in sulated w ith ce-ram ic bu shin gs.

c. E lectric h eater p ackages m ustp rovide sing le-

p oint p o w er con n ection cap ability.

3 . C o m p re sso r S h o rt C y c le D e v ic e :

S o lid-state con tro l sh all p ro tect com p resso r byp reve n tin g sho rt cyclin g.

4 . C on trols U p grade K it:

C o ntain s h igh an d low p ressure sw itches. K itsshallp ro tect un itfro m o p eratin g at un accep tablep ressures.

5 . O u td o o r T h e rm o s ta t:

A llo w s fo r stag in g o f e lectric h eaters based o no utdo o r-air tem p erature.

6 . C rankcase H eater:

W arm s cran kcase o ilto redu ce refrige ran tm igra-tio n an d en sure p rop er com p ressor lubricatio n.

7 . T h e rm o sta t a n d S u b b a se :

P rovides staged coo lin g an d he atin g, autom atic(or m an ual) chan geo ver, fan con trol.

8 . E lectron ic P rog ram m able T h erm o stat:

T h erm o statp ro vide s 2 -stage h eatin g a n d 2 -stag ecoo ling con trol w ith rem ote com m un icationab ility.

Carrier Corporation • Syracuse, New York 13221 1-97

unidades paquete zp de l marca carrier 1

Documents