INSTALLATION

MANUAL

CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . .5 INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 REFERENCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 APPROVALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 START-UP (COOLING). . . . . . . . . . . . . . . . . . . . . . . . . .37 NORMAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . .39 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .39

See following pages for a complete Table of Contents.

NOTES, CAUTIONS AND WARNINGS

The installer should pay particular attention to the words: NOTE, CAUTION, and WARNING. Notes are intended to clarify or make the installation easier. Cautions are given to prevent equipment damage. Warnings are given to alert installer that personal injury and/or equipment damage may result if installation procedure is not handled properly.

CAUTION: READ ALL SAFETY GUIDES BEFORE YOU

BEGIN TO INSTALL YOUR UNIT.

SAVE THIS MANUAL

￿

SINGLE PACKAGE AIR CONDITIONERS AND

SINGLE PACKAGE ELECTRIC UNITS

DM090, 120 and 150

7-1/2 TO 12-1/2 TON

(380V, 3 Phase, 60 HZ)

035-17311-003-A-0704

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York DM090 installation manual Installation Manual