Emerson PFHZ42A-L Air Conditioner Manuals

Manuals and User Guides for Emerson PFHZ42A-L Air Conditioner. We have 2 Emerson PFHZ42A-L Air Conditioner manuals available for free PDF download: User Manual, Installation, Operation And Maintenance Manual

Emerson PFHZ42A-L User Manual

Emerson PFHZ42A-L User Manual (117 pages)

Brand: Emerson | Category: Air Conditioner | Size: 6.15 MB

Table of Contents

Table of Contents
4
Model Number Nomenclature-All Systems

8
Important Safety Instructions

12
Save These Instructions

12
1 Introduction

14
- Designed to Match Computer and Electronic Equipment Needs-From Installation to Oper- Ation7
  14
2 Standard Features -1 & 1.5 Ton Systems

16
- Self-Contained Systems
  16
  - Air-Cooled Unit
    16
  - Water/Glycol-Cooled Unit
    16
  - Chilled Water Unit
    16
- Evaporator Section-Split Systems
  16
- Condensing Unit Section-Split System
  16
- System Controls
  16
  - Other Standard Control Features
    17
  - Figure 6 Wall-Mounted Display Box
    17
3 Optional Factory -Installed Features -Self -Contained and Evaporator Units

18
- Reheat
  18
- Humidifier
  18
- Sensors
  18
- Switches
  18
- Free-Cooling
  19
- Optional Configuration-Prop Fan Condensing Units
  19
- Optional Configurations-Water/Glycol-Cooled Units
  19
- Optional Configuration-Chilled Water Units
  19
- Figure 7 Free Cooling Option-Example
  19
4 Ship -Loose Accessories -Field -Installed

20
- Remote Monitoring, Autochangeover and Leak Detection Equipment
  20
5 Site Preparation and Installation

22
6 Microprocessor Control

47
- Feature Overview
  47
  - Figure 26 Microprocessor Control Layout
    47
  - Setpoints
    48
  - Table 16 View Default Setpoints and Allowable Ranges
    48
  - Active Alarms
    49
  - Date
    49
  - Setback
    49
  - Setup Operation
    49
  - Status
    49
  - Table 17 Logging a Setback Plan
    49
  - Time
    49
  - Change Passwords
    50
  - Table 18 Setup Functions, Default Values and Allowable Ranges
    50
  - 6.1.10 Alarm Enable
    51
  - 6.1.11 Alarm Time Delay
    51
  - 6.1.12 Common Alarm Enable
    51
  - Calibrate Sensors
    51
  - Table 19 Alarm Default Time Delays
    51
  - 6.1.13 Custom Alarms
    52
  - 6.1.14 Custom Text
    52
  - Run Diagnostics (Available on Rev 1.001.0)
    53
  - Figure 27 Control Menu
    55
  - Figure 28 Control Board (Inside Evaporator)
    56
  - Table 22 Control Board Connections and Functions
    56
  - Figure 29 Wall Box Board
    57
7 System Performance Microprocessor Controls

58
8 Alarms

60
- Alarms: Definitions and Troubleshooting
  60
  - Custom Alarms
    60
  - High Head Pressure
    60
  - Humidity Level
    61
  - Temperature
    61
  - Humidifier Problem Alarm
    61
  - High-Water Alarm
    61
  - Loss of Power
    61
  - Short Cycle
    61
- Optional/Custom Alarms
  61
  - Loss of Water Flow
    61
  - Smoke Detected
    61
9 System Testing and Maintenance

62
- System Testing
  62
  - Environmental Control Functions
    62
  - Cooling
    62
  - Heating
    62
  - Humidification
    62
  - Dehumidification
    62
  - High-Temperature Sensor-Optional
    62
  - Smoke Sensor
    62
  - Remote Shutdown
    62
- Maintenance
  63
  - Electric Panel
    63
  - Filters
    63
  - Direct Drive Blower Package
    63
  - Refrigeration System
    63
  - Table 24 Typical Discharge Pressure
    63
  - Figure 31 Hot Gas Bypass
    65
- Replacement Procedures
  66
10 Maintenance Inspection Checklist

70
11 Troubleshooting

71

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Emerson PFHZ42A-L Installation, Operation And Maintenance Manual

Emerson PFHZ42A-L Installation, Operation And Maintenance Manual (36 pages)

Liebert Prop Fan Condensing Unit

Brand: Emerson | Category: Air Conditioner | Size: 0.91 MB

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