Dunham-Bush HRSC - D - User Manual

HRSC - D
Remote Condenser Packaged Chiller
Installation, Operation &
Maintenance Instructions
Table of Contents
Description Page No.
Introduction & Product Identification ................................................................................. 1
Inspection, Storage & Rigging............................................................................................. 2
Location, and Clearance & Foundation ............................................................................... 2
Vibration Isolation .............................................................................................................. 2
Water Piping .............................................................................................................2, 3 & 4
Refrigerant Piping ............................................................................................................... 5
Electrical Connections ......................................................................................................... 5
Operation .....................................................................................................................5 & 6
Maintenance ....................................................................................................................... 6
Slide Valve Unloading System ............................................................................................. 7
Control Settings ............................................................................................................8 & 9
Sequence of Operation ...............................................................................................9 & 10
Optional Microcomputer Controller ..................................................................... 10 thru 16
Electrical Data (60 Hz) ...............................................................................................17 & 18
Typical Power Wiring ......................................................................................................... 19
Typical Control Wiring (Electro-Mechanical ....................................................................... 20
Typical Control Wiring (Optiomal Microcomputer Controller) ...................................21 & 22
Typical Piping Schematic ................................................................................................... 23
Capacity Control ............................................................................................................... 24
Physical Data..................................................................................................................... 24
Evaporator Pressure Drop ................................................................................................. 25
Rigging (Sizes 50 thru 150) ............................................................................................... 26
Rigging (Sizes 180 thru 300) ............................................................................................. 27
Spring Vibration Isolation Data......................................................................................... 28
Rubber-in-Shear Vibration Isolation Data.......................................................................... 29
Troubleshooting Guide ..................................................................................................... 30
Start-up Check List ............................................................................................................ 31
FORM 5504

Summary

Introduction and Installation

Introduction and Product Identification

General overview of the chiller and its specific model and voltage configurations.

Installation Requirements

Covers essential site selection, foundation, vibration isolation, and rigging procedures.

Piping and Connections

Details on water and refrigerant piping setup, including multi-unit configurations.

System Operation, Maintenance, and Controls

Refrigerant Piping

Guidelines for proper installation of refrigerant lines.

Electrical Connections

Requirements and safety precautions for unit wiring and power supply.

Unit Start-Up Procedures

Step-by-step instructions for initial unit operation and checks.

Compressor Maintenance

Procedures for checking and adding compressor oil.

Slide Valve Unloading System

Explanation of the mechanism for compressor capacity control.

Control Settings and Safety

Factory settings, operating limits, and essential safety controls.

Sequence of Operation

Detailed description of how the unit's compressors stage and operate.

Microcomputer Controller System

Overview of the NC25 control system, including general description and hardware precautions.

Microcomputer Operation and Settings

Instructions for using the LCD display and modifying operational parameters.

Technical Data and Schematics

Power Wiring Diagrams

Electrical schematics illustrating power supply connections for the unit.

Control Wiring Diagrams (Electromechanical)

Schematics for standard electromechanical control systems.

Control Wiring Diagrams (Micro-Computer)

Schematics for micro-computer controlled systems.

Piping Schematic

Diagram illustrating the refrigerant circuit layout.

Capacity Control and Physical Data

Details on compressor modulation limits and unit specifications.

Evaporator Water Pressure Drop

Data regarding flow rates and pressure loss across the evaporator.

Rigging and Mounting

Rigging and Isolator Instructions (50-150)

Procedures for lifting and mounting smaller unit models (50-150).

Rigging and Isolator Instructions (180-300)

Procedures for lifting and mounting larger unit models (180-300).

Load and Isolator Data (Spring)

Specifications for mounting points and spring isolator placement.

Load and Isolator Data (Rubber-in-Shear)

Specifications for mounting points and rubber-in-shear isolator placement.

Troubleshooting and Start-Up

Troubleshooting Guide

Common operational issues and their recommended solutions.

Start-Up Check List

Pre and post-start operational verification checklist for the unit.

Dunham-Bush HRSC - D Specifications

General

Brand	Dunham-Bush
Model	HRSC - D
Category	Chiller
Language	English