Yazaki Aroace WFC-SC10 User Manual

WATER-FIRED SINGLE-EFFECT
ABSORPTION CHILLER
This product is a water-fired single-effect absorption unit which provides chilled
water for cooling in central plant type air conditioning systems. WFC-SH model chiller-
heaters also provide hot water for heating in two-pipe central plant type systems. Units
with nominal refrigeration capacities of 10, 20, 30, and 50 tons are complete with
operating and safety controls. The absorption chiller or chiller-heater is energized by a
heat medium (hot water) from a process, cogeneration, solar, or waste heat source
capable of providing a temperature range of 158 – 203°F (70 – 95°C).
CONTENTS
GENERAL Page
 GENERAL 2
 MODEL DESIGNATION 2
 ACCESSORIES 2
 STANDARD SPECIFICATIONS 3
 CONTROL ADJUSTMENTS 4
 EQUIPMENT DIMENSIONS 5
 TYPICAL SYSTEM DESIGN 7
 WIRING DIAGRAMS 8
INSTALLATION
 RIGGING AND MOVING 11
 LOCATION AND CLEARANCES 13
 FOUNDATION 13
 LEVELING 14
 PIPING 14
Page
 CHILLED/HOT WATER PIPING 15
 COOLING WATER PIPING 15
 HEAT MEDIUM PIPING 16
 FREEZE PROTECTION 16
 ELECTRICAL 17
 HIGH VOLTAGE CONNECTIONS 18
 CONTROLLING PUMPS AND
VALVES 18
 COOLING TOWER FAN CONTROL 19
 PUMP SAFETY INTERLOCKS 19
 BUILDING MANAGEMENT
SYSTEM INTERFACE 20
 REMOTE MONITORING 20
 WATER QUALITY 22
 INSTALLATION CHECK &
REQUEST FOR STARTUP 22
INSTALLATION INSTRUCTIONS
WFC-SC10, 20, 30, 50
WFC-SH10, 20, 30

Yazaki Aroace WFC-SC10 Specifications

General

Brand	Yazaki
Model	Aroace WFC-SC10
Category	Chiller
Language	English

Summary

General Information and Specifications

Model Designation

Explains the naming convention for chiller models.

Accessories

Lists items provided with the chiller/chiller-heater and optional accessories.

Standard Specifications

Provides detailed technical specifications for all models.

Equipment Details and System Overview

Equipment Dimensions

Shows physical dimensions and port locations for different unit models.

Typical System Design

Illustrates common system configurations for single and multiple module setups.

Wiring Diagrams and Terminals

Internal and Junction Box Wiring

Details internal wiring, junction box connections, and terminal functions.

Terminal Descriptions and Settings

Explains terminal functions, overload settings, and fuse ratings.

Installation Procedures

Rigging, Moving, Location, and Clearances

Guidelines for rigging, moving, unit placement, and required space.

Foundation, Leveling, and Piping

Requirements for foundation, unit leveling, and fluid piping installation.

Water Quality and Freeze Protection

Details water quality limits and freeze protection measures.

Electrical and System Control

High Voltage Connections

Explains high voltage wiring and phase rotation checks.

Controlling Pumps, Valves, Fans, and BMS

Details control of system components and BMS integration.

Remote Monitoring

Describes options for remote monitoring of unit status and data.

Final Checks and Startup

Water Quality Requirements

Specifies limits for water quality in various circuits to prevent damage.

Installation Check and Startup Request

Guides final installation checks and procedure for requesting unit startup.