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KRACK KR Series - User Manual

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KR Series
UNIT COOLERS
Installation and Operation Manual
Products that provide lasting solutions.
Part Number: E108318_S

Table of Contents

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Summary

BEFORE YOU BEGIN

ANSI Z535.5 DEFINITIONS

Definitions of safety alert symbols and signal words as per ANSI Z535.5.

Environmental Concerns

Guidelines for responsible handling of refrigerants and compliance with regulations.

RECEIPT OF EQUIPMENT

INSPECTION

Procedure for checking equipment for damage or shortages upon receipt.

LOSS OF GAS HOLDING CHARGE

Verifying the gas holding charge and checking for leaks before system charging.

LOCATION RECOMMENDATIONS

UNIT MOUNTING

DRAIN LINE

REFRIGERATION PIPING

Special Instructions for Units Using Carbon Dioxide (R-744)

Specific installation requirements for units utilizing carbon dioxide refrigerant.

REFRIGERANT DISTRIBUTOR NOZZLES

EXPANSION VALVE

WIRING

AIR DEFROST MODELS WIRING DIAGRAMS

Wiring diagrams for air defrost unit coolers with different motor types.

ELECTRIC DEFROST MODELS WIRING DIAGRAMS

Wiring diagrams for electric defrost unit coolers with different motor types.

GAS DEFROST MODELS WIRING DIAGRAMS

Wiring diagrams for gas defrost unit coolers with different motor types.

SEQUENCE OF OPERATION

MODELS H - 3 PIPE HOT GAS WITH ELECTRIC PAN HEAT AND P - 2 PIPE KOOL GAS WITH ELECTRIC PAN HEAT

Details on the operation of 3-pipe hot gas and 2-pipe cool gas defrost systems.

MODELS G - 3 PIPE HOT GAS WITH GAS PAN HEAT AND K - 2 PIPE KOOL GAS WITH GAS PAN HEAT

Operational steps for G and K models using hot gas or cool gas defrost.

DUAL SPEED MOTOR SEQUENCE OF OPERATION

How dual speed EC motors operate based on room temperature or setpoint.

VARIABLE SPEED MOTOR SEQUENCE OF OPERATION

Operation of variable speed motors controlled by a 0-10V signal.

VARIABLE SPEED MOTOR WITH SYSTEM 450 - SEQUENCE OF OPERATION

Using System 450 controller for variable speed motor operation and parameters.

INTERLOCKING SINGLE COMPRESSOR UNIT WITH KRACK COIL

How to interlock evaporator fans with a single compressor unit.

PRE-STARTUP

REPLACEMENT PARTS

KRACK KR Series Specifications

General IconGeneral
BrandKRACK
ModelKR Series
CategoryAccessories
LanguageEnglish