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Carrier

INSTALLATION

50K

SUPPLEMENTARY INSTRUCTION

FOR 50K CONOENSERLESS UNITS

tì

The following items are included in the base unit for

field installation:

a. Discharge Line Assembly

b. Moisture and Liquid Indicator

c. Filter-drier

d. Crankcase Heater Relay Assembly

e . Condenser Fan Relay Assembly

NOTE: One each of the above items is used on

all units, except the 50K16-2 compres

sor model which has two each.

Install this unit in accordance with the instructions

in the Unit Installation Instruction Book (50K8-1005

Rev. ) except for the following items .

AIR-COOLED CONDENSER LOCATION

The air-cooled condenser should not be located more

than 60 feet above, or 15 feet below the base unit.

Cneck the installation booklet with the condenser for

installation details.

In order to prevent condensed liquid refrigerant or

oil from causing damage to the compressor, install

a trap in the vertical discharge line near the com

pressor. The trap may be installed within or ad

jacent to the base unit chassis. The height of the

trap (or loop) should be 6 inches for every 10 feet

of vertical discharge line. If the height of the ver

tical discharge line is such as to make a single trap

impractical, the loop can be replaced by a check

valve or several traps.

When installing refrigerant piping make certain it

is well supported. Install piping with sufficient flex

ibility to make sure line vibrations are not trans

mitted to the building.

The openings in the chassis normally used for the

water-cooled condenser water piping may be used to

bring the lines into the unit.

Install the discharge line assembly, filter-drier and

the moisture and liquid indicator in each circuit

within the chassis of the base unit. Locate the filter-

drier and the moisture and liquid indicator in the

liquid line just before the liquid line enters the

expansion valve. The moisture and liquid indicator

goes between the filter-drier and the expansion

valve.

CRANKCASE HEATERS

One crankcase heater (230 volt, 1 phase, 60 cycle)

will be factory installed on the outside of the bottom

plate of each compressor. The crankcase heater

elements replace the need for the liquid lines sole

noid valves. Each crankcase heater has 36 inch

leads for wiring in the field.

REFRIGERANT PIPING

Install the hot gas and liquid line between the base

unit and the external condenser for each system be

ing careful to connect the correct components in

each system. Fig. 1 through 4 shows the location

of the connections at the base unit. Fig. 5 through

7 shows the schematic piping layout for the various

units when connected with the 9AB Air-Cooled Con

denser. Table 2 shows the connection sizes at the

base unit and recommends line sizes for various

refrigerant line lengths . Consult the Installation

Instructions of the condenser used and Part 3

of the System Design Manual for piping details

and line sizes when greater lengths are used.

PRESSURE RELIEF PROTECTION

Refrigerant pressure relief protection must be pro

vided for each system at the time of installation of

the unit. A suitable fusible union, a liquid line soft

solder joint within the base unit, or a rupture disc

(Chicago Code) may be used depending on local

codes, etc.

The 9AB6 receiver is provided with a 3/8" FPT fitting

for the installation of a fusible union or rupture disc.

The Cerro De Pasco Co. fusible union No. 5160-1

or No. 5250-1 (melting point 197 F or 203 F), Carrier

Part No. EK41JN200 is suitable; check local codes.

HEAD PRESSURE CONTROL

A condensing pressure (head pressure) control acces

sory package is available for use with the 9AB conden

sers . Consult the 9AB Instruction Sheets for details.

Carrier Corporation 1960

Litho in U.S. A. 12-60

50K8-1415

1 2 3 4 5 6 ... 18 19

Inhaltsverzeichnis

Seite 1 - INSTALLATION

CarrierINSTALLATION50KSUPPLEMENTARY INSTRUCTION FOR 50K CONOENSERLESS UNITSOCN8)CJOMtìObotìThe following items are included in the base unit for field

Seite 2

50KINSTALLATIONCarrierFIG. 10 - 50K12, SINGLE COMPRESSOR (208/230-3-60) SCHEMATIC DIAGRAM, CONDENSERLESS10

Seite 3

CarrierINSTALLATION50KINTERNAL WIRINGFIELD WIRINGTO THERMOSTAT NOT FURNISHED BY CARRIERFIG. 11 - 50K12, SINGLE COMPRESSOR (208/220-3-60), CONDENSERL

Seite 4 - TABLE 5 - ELECTRICAL DATA

50KINSTALLATIONCarrier220V CONTROL CIRCUIT FOR CONDENSER FANP.L, - PILOT LIGHTO.L. - OVERLOAD C - COMP. STARTER F - FAN STARTER CH - CRANKCASE HEATER

Seite 5

CarrierINSTALLATION 50KINTERNAL WIRING---------------------FIELD WIRINGcFIG. 13 - 50K12, SINGLE COMPRESSOR (440/550-3-60), CONDENSERLESS13

Seite 6 - 50K16 - 2 COMPRESSOR MODEL

INTERNAL WIRING FIELD WIRING220V CONTROL CIRCUIT FOR CONDENSER FAN RELAYFIG. 14- 50K16, SINGLE COMPRESSOR (208/220-3-60) SCHEMATIC DIAGRAM, CONDENSER

Seite 7

CarrierINSTALLATIONSOM€INTERNAL WIRINGFIG. 15 - 50K16, SINGLE COMPRESSOR (208/220-3-60) CONDENSERLESS15

Seite 8

INTERNAL WIRING FIELD WIRING220V CONTROL CIRCUITSELECTOR SWITCHFIG. 16 - 50K16, SINGLE COMPRESSOR (440/550-3-60) CONDENSERLESS16

Seite 9

INTERNAL WIRING FIELD WiRiNGFIG 17- - 50K16, TWO COMPRESSOR (208/220-3-60) CONDENSERLESS3.>>-Ioi/1

Seite 10

Seite 11

FILING INSTRUCTIONSBOOKMAJOR TABMINOR TABTHIS ISSUESUPERSEDES(UED) (UED)Packaged Packaged UnitsCommercial and50K8-I41550K8-1405EquipmentIndustrial Uni

Seite 12

50KINSTALLATIONCarrierTABLE 1UnitCircuit NoCompressorEvaporator Coil Liquid Line ConnectionR-22PoundsModelLocation50K8(1 Circuit) 6D48--1050K12Single

Seite 13 - INSTALLATION 50K

CarrierINSTALLATION50KTABLE 4High Press. SwitchLow Press. SwitchRefrig.Cut-InCut-Out Cut-In Cut-Out22 284 3648346500218 2656730NOTE* If the liquid ref

Seite 14 - FOR CONDENSER FAN RELAY

TABLE 5 - ELECTRICAL DATACurrentCharacteristicsLocked Rotor Current Amps.Full Load Current Amps.WireSizeAwg. No.Max. WireLengthFt.WireSizeAwg. NoMax.

Seite 15 - INTERNAL WIRING

CarrierINSTALLATION50KSIDE ELEVATIONFRONT ELEVATIONFIG. 2 - LOCATION OF COMPRESSOR DISCHARGE AND LIQUID CONNECTIONS 50KI2SIDE ELEVATIONFRONT ELEVATION

Seite 16 - ■INTERNAL WIRING

SIDE ELEVATIONFRONT ELEVATIONFIG. 4 - LOCATION OF COMPRESSOR DISCHARGE AND LIQUID CONNECTIONS 50K16 - 2 COMPRESSOR MODELFIG. 5 - SCHEMATIC PIPING FOR

Seite 17 - FIELD WiRiNG

CarrierINSTALLATION50KFIG. 6 - SCHEMATIC PIPING FOR 50KI2 AND 50K16 SINGLE COMPRESSOR MODELSWITH (2) 9AB CONDENSERSLIQUID LINE TO BASE UNITFIG. 6B - A

Seite 18

50KINSTALLATIONCarrieriFIG, 7 - SCHEMATIC PIPING FOR 50K (2-COMPRESSORS) WITH TWO (2) 9AB CONDENSERS

Seite 19 - FILING INSTRUCTIONS

CarrierINSTALLATION50Kti№%PIO. !> - 50K8 (440/550-3-60) CONDENSEELESS

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Carrier 50K Bedienungsanleitung

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Inhaltsverzeichnis

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