Instruction/ maintenance manual of the product 30HX076-271 Carrier
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Installation Instructions Part Nos. 30HX-900---008, 30GX-900---004 (60 Hz — 1 15-v Control) Part Nos. 30HX-900---009, 30GX-900---005 (50 or 60 Hz — 230-v Control) CONTENTS Page SAFETY CONSIDERA TIONS ...................1 INTRODUCTION .............
Step 2 — Install Piping Shut of f all power to the unit, then lock out and safety- tag all disconnects before proceeding with installation. Remove refrigerant charge from circuits using an ap- proved refrigerant recovery device before proceeding with installation.
INST ALL BALL AND SOLENOID V AL VES — Using good piping practice, braze ball valve and solenoid valve into 5 ⁄ 8 -in. minimum load piping. Fig. 2 shows a typical 30HX installation and Fig. 3 shows a typical 30GX installation, in- cluding valve locations and orientation.
Step 4 — Install Control Wiring Be sure all power to the unit is of f before proceeding. Lock out and safety-tag all disconnects. W ires between field-installed components and unit contr ol box must be enclosed in field-supplied conduit. Follow all local codes and NEC (National Electrical Code, U.
30GX080-176 30HX076-271 LEGEND MLC — Minimum Load Control TB — T erminal Block NOTE: See Fig. 3 for locations of junction boxes on unit. Fig. 4 — Minimum Load Control Wiring 5.
Step 5 — Configure Unit for Minimum Load Con- trol — Once the piping installation and wiring installation are complete, the chiller must be configured for minimum load control operation. This may be done using the unit key- pad (HSIO-2). Set the LOCAL/OFF switch in the OFF position.
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Copyright 1997 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
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If you already are a holder of Carrier 30HX076-271, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Carrier 30HX076-271.
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