Page 2 - F09-BPS-YZ101A-Installation-Manual

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Introduction

Table of Contents

Page 2 Introduction Page 6 Mounting & Installation
Technical Description Universal, Vertical & Horizontal Mount Purge
Important Notes Unit & Purge Vent Dimensions
Important Manual Information Designators Page 7 Mounting Set Up
Page 3 Identifying Your Unit Unit Mounting Instructions
Model Number Designations Unit Tubing Instructions
General Information Enclosure Warning Label(s)
Unit Specifications Page 8 Pressurization Unit & Switch Set Up
Material Specifications Pressurization Unit Set Up
Protected Enclosure Criteria Pressure Switch Set Up
Major Components List Typical Pressure Switch Wiring Diagram
Page 4 Getting Starting Page 9 Pressurization Unit Operation
Pressurization Unit & Enclosure Connection Cross Ventilation Diagram
Requirements Page 10 Warranty & Liability Statements
Single Enclosure Connections
Multiple Enclosure Connections Page 11 Factory Repair & Service Guide
Page 5 Unit Layout Page 12 Reference Information
Unit Layout & Component Description Page 13 Maintenance & Service Notes
Typical Pneumatic Flow Diagram
Page 14 Unit Identification Information

Technical Description IMPORTANT NOTE

Model YZ101A is a Type Y or Z pressurization unit Operating this unit without a Model PV-2 Purge Vent or
designed to protect electrical equipment in Class I and Model RR-4 Redundant Regulator (or equivalent) may
Class II hazardous locations. Type Z applications reduce the cause harm, death or dismemberment to personnel
hazardous location rating inside the enclosure from Division and can cause damage to instrumentation.
2/ Zone 2 to non hazardous. This allows general purpose This unit is NOT intended for dilution applications.
equipment to operate in Division 2/ Zone 2 areas. Type Y Please consult factory for more information.
applications reduce the hazardous location rating inside the
enclosure from Division 1/ Zone 1 to Division 2/ Zone 2. This A copy of this manual must be read and retained by the
allows Division 2/ Zone 2 equipment to operate in Division operator of this unit. User’s agent’s are responsible for
1/ Zone 1 areas. transferring this manual to the user prior to installation and
Model PV-2 spark arresting Purge Vent installed on the start up.
protected enclosure OR a Model RR-4 Redundant Regulator This unit must be installed and operated per this manual.
(or equivalent) installed upstream of the Model YZ101A The Authority Having Jurisdiction should be advised
Pressurization Unit is required for safe operation. before installation of this unit. This manual DOES NOT
supersede any national, local or plant codes.
This unit is designed to meet or exceed NEC - NFPA 70, NFPA
496, EN 50016 and IEC 60079-02 requirements. All specifications are subject to change without notice.

Important Manual Information Designators

To assist you through the installation and operation of your enclosure pressurization unit, Best Purging Systems has provided the
following information boxes throughout this manual. This information is intended to clarify certain differences between the model styles
and configurations of this unit and to warn the user and installer of potential dangers due to improper installation or operation.
HELPFUL HINT IMPORTANT NOTE WARNING

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