Yazaki Aroace WFC-SC50 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-SC50 Specifications

General

Brand	Yazaki
Model	Aroace WFC-SC50
Category	Chiller
Language	English

Summary

GENERAL

MODEL DESIGNATION

Defines the model naming convention and capacity for Yazaki absorption chillers.

ACCESSORIES

Lists standard and optional accessories provided with or available for the unit.

STANDARD SPECIFICATIONS

Details technical specs like capacity, temperatures, pressures, and dimensions for all models.

EQUIPMENT DIMENSIONS

Provides detailed drawings and measurements of the unit for installation planning.

TYPICAL SYSTEM DESIGN

Illustrates system integration with diagrams for single and multiple module configurations.

WIRING DIAGRAMS

Presents internal and field wiring diagrams crucial for electrical installation and troubleshooting.

INSTALLATION

RIGGING AND MOVING

Procedures and precautions for safely lifting, transporting, and positioning the unit.

LOCATION AND CLEARANCES

Specifies required space around the unit for installation, service, and maintenance access.

FOUNDATION

Guidelines for preparing a level, stable, and non-combustible foundation suitable for the unit's weight.

LEVELING

Instructions for ensuring the unit is perfectly level to guarantee proper fluid distribution and operation.

CHILLED/HOT WATER PIPING

Details for installing the chilled and hot water piping circuits, including connections and valves.

COOLING WATER PIPING

Guidelines for installing the cooling water piping system, including connections, valves, and crossover piping.

HEAT MEDIUM PIPING

Instructions for connecting the heat medium piping system, including bypass valve and flow adjustments.

FREEZE PROTECTION

Methods and precautions for protecting the unit and piping from freezing conditions, especially with glycol.

WATER QUALITY

Recommended water quality limits for chilled, cooling, and heat medium circuits to prevent scaling/corrosion.

INSTALLATION CHECK AND REQUEST FOR STARTUP

Procedures for final installation checks and scheduling the unit startup with an Authorized Service Provider.