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Carrier 00EFN900003000A Typical Junction Box Connections, EWT and LWT Thermistors Shown, a30-4508

Models: 00EFN900003000A

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MAIN

EWT

EWT

LWT

LWT

EWT

EWT

LWT

LWT

JUNCTION BOX (ACCESSORY- SUPPLIED)

MAIN

BASE BOARD

	5-WIRE CABLE
STRAIN RELIEF	(ACCESSORY-SUPPLIED)
(FIELD-SUPPLIED)
EWT	CONDUIT
LWT	(FIELD-SUPPLIED)
LWT

a30-4508

Fig. 14 — Typical Junction Box Connections

(EWT and LWT Thermistors Shown)

a30-4524

LEGEND

DPT — Discharge Pressure Transducer

LWT — Leaving Water Temperature

OAT — Outdoor Air Temperature

SPT — Suction Pressure Transducer

Fig. 13 — Thermistor Connections

Copyright 2007 Carrier Corporation

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book	2	Catalog No. 04-53300012-01	Printed in U.S.A.	Form 30XA-7SI	Pg 16	3-07A	1-07	Replaces: New
Tab	5c

Image 16

Carrier 00EFN900003000A Typical Junction Box Connections, EWT and LWT Thermistors Shown, Thermistor Connections, a30-4508

Contents

CONTENTS SAFETY CONSIDERATIONSRemote Cooler and Economizer Installation Table 1 - Accessory Package UsageTable 2 - Accessory Package Contents Table 3A - Refrigeration Piping and Connections Material EnglishTable 3B - Refrigeration Piping and Connections Material SI Refrigeration copper30XA INSTALLATION Table 4A - Refrigeration Line Sizes English Table 5 - Cooler and Economizer WeightsTable 4B - Refrigeration Line Sizes SI Fig. 4A - 30XA080-120 Cooler Dimensions Fig. 4B - 30XA140, 160 Cooler DimensionsFig. 4D - 30XA260-350 Cooler Dimensions Fig. 4C - 30XA180-240 Cooler DimensionsTYP 6 PLACES Fig. 5B - 30XA180-350 Economizer Dimensions Fig. 5A - 30XA090-160 Economizer Dimensionsa30-4516 Fig. 6 - Typical Cooler Piping-Cooler Side View 30XA140, 160 Shown a30-4518Remote Cooler and Economizers Installa 19. Reinstall the thermistors in the correct cooler wells Table 6 - Materials Required for Steel Piping Flange Connections Table 6 - Materials Required for Steel Piping Flange Connections cont Table 7 - Additional Refrigerant Charges RequiredFig. 7 - Line Piping and Connections 1 Circuit Shown Fig. 9 - Connect Copper Suction Line at the CoolerFig. 8 - Double Suction Riser 30XA080-120 All Circuits andFig. 10 - Unbolt Portion Between Flex Connector and Cooler 30XA140, 160 Circuit A and 30XA180-350 All CircuitsFig. 11 - Connect Steel Suction Line at the 30XA Base Unit Shown and Cooler 30XA140, 160 Circuit A andFig. 14 - Typical Junction Box Connections EWT and LWT Thermistors ShownFig. 13 - Thermistor Connections MAIN BASE BOARD