Johnson Controls YVAHR120B42S User Manual

P5417009
Models:
Outdoor Units;
208/230V
(H,Y)VAHR072B32S, (H,Y)VAHR096B32S,
(H,Y)VAHR120B32S, (H,Y)VAHR144B32S,
(H,Y)VAHR168B32S, (H,Y)VAHR192B32S,
(H,Y)VAHR216B32S, (H,Y)VAHR240B32S,
(H,Y)VAHR264B32S, (H,Y)VAHR288B32S,
(H,Y)VAHR312B32S, (H,Y)VAHR336B32S,
(H,Y)VAHR360B32S, (H,Y)VAHR384B32S,
(H,Y)VAHR408B32S, (H,Y)VAHR432B32S
460V
(H,Y)VAHR072B42S, (H,Y)VAHR096B42S,
(H,Y)VAHR120B42S, (H,Y)VAHR144B42S,
(H,Y)VAHR168B42S, (H,Y)VAHR192B42S,
(H,Y)VAHR216B42S, (H,Y)VAHR240B42S,
(H,Y)VAHR264B42S, (H,Y)VAHR288B42S,
(H,Y)VAHR312B42S, (H,Y)VAHR336B42S,
(H,Y)VAHR360B42S, (H,Y)VAHR384B42S,
(H,Y)VAHR408B42S, (H,Y)VAHR432B42S
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL BEFORE
INSTALLING THIS HEAT
RECOVERY AIR CONDITIONER.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.
Installation
and
Maintenance
Manual
INVERTER-DRIVEN
MULTI-SPLIT SYSTEM
HEAT RECOVERY
AIR CONDITIONERS

Johnson Controls YVAHR120B42S Specifications

General

Brand	Johnson Controls
Model	YVAHR120B42S
Category	Air Conditioner
Language	English

Summary

Important Safety Instructions

Signal Words and General Precautions

Defines hazard communication terms and outlines general safety guidelines for installation.

Installation Precautions

Location Selection and Hazardous Site Avoidance

Advises on selecting installation sites and avoiding hazardous locations.

Refrigerant Precautions

Safety Standards, Piping, and Contamination Prevention

Covers refrigerant safety standards, piping requirements, and preventing contamination.

Electrical Precautions

High Voltage, Wiring, Cables, and External Equipment

Details safety for high voltages, wiring, cable specs, and interaction with external equipment.

Electrical Installation Requirements

Circuit Breakers, Grounding, GFCI, and Installer Responsibility

Covers requirements for breakers, grounding, GFCI, and installer's code compliance responsibility.

Flaring and Joint

Flaring, Joint Selection, and Piping Material Specifications

Details flaring dimensions, joint selection criteria, and piping thickness/material requirements.

Brazing Connection Processing Details

Combinations of Indoor and Outdoor Units

Indoor Unit Model Compatibility List

System Combination Conditions

Caution About Outdoor Unit Installation

Unit Arrangement and Piping Length for Combinations

Piping Work Between Outdoor Units

Connection Kit Usage and Piping Requirements

Outdoor Unit Piping Arrangement and Connection Kit Placement

Outdoor Unit Installation

Location, Precautions, Foundation, and Drainage

Covers site selection, avoiding hazards, foundation requirements, and drainage during heating/defrost.

Installation Work

Concrete Foundation Requirements and Anchor Bolt Details

Details requirements for concrete foundations, including anchor bolt placement and foundation design.

Securing the Outdoor Unit to the Foundation

Refrigerant Piping Work

Pressure, Thickness, Stop Valve Checks, and Pipe Connections

Covers R410A pressure requirements, piping thickness, stop valve checks, and basic pipe connections.

Piping Materials, End Protection, and Brazing Procedures

Detailed Connection Cautions, Torque, Insulation, and Airtight Testing

Piping Connection Work

Stop Valve Handling Procedures (Gas and Liquid)

Valve Torque Specifications and Handling

Outdoor Unit Piping Connection Methods

Piping Size and Multi-Kit Selection

Outdoor Unit and Indoor Unit Pipe Size Selection

Pipe Diameter Selection for Change-Over Boxes and Multi-Kits

Main Pipe Diameter Selection for Outdoor Units

Pipe Diameter for Change-Over Box to Multi-Kit Connections

Pipe Diameter Selection After First Branch

Piping Work Conditions and Limitations for Combined Systems

Piping Length and Height Difference Limitations for Combined Units

Allowable Piping Lengths Based on System Configuration

Piping Length Limitations for Combined Units

Height Difference Limitations for Various Configurations

Height Difference Limitations for Combined Systems

Piping Branch Restriction

Main Piping Branch Connection Rules

Header Branch Connection Restrictions

Piping Length Limitations for Branch Connections

Electrical Wiring

Electrical Wiring Safety and Precautions

Covers safety warnings, cable specs, torque, and DIP switch settings for electrical connections.

Electrical Wiring Connection Procedures

Details power supply wiring to outdoor and indoor units, and communication cable connections.

Electrical Characteristics and Recommended Wiring Sizes

Outdoor Unit Electrical Wiring Connections

Details connecting power, ground, and communication cables to the outdoor unit, including torque specs.

System-Wide Electrical Wiring Connections

Covers power supply wiring for indoor units and change-over boxes, and communication cable connections.

Communication Cable Installation and System Settings

Outdoor Unit DIP Switch Settings for Operation and Configuration

DIP Switch Settings for Rated Voltage and End Resistance

External Input/Output and Function Setting Procedures

Additional Refrigerant Charge

Airtight Test Procedures and Leak Detection

Explains how to perform an airtight test using nitrogen gas and leak detection methods.

Vacuuming Procedures for Refrigerant System

Details the triple evacuation method for vacuum drying the refrigerant system.

Refrigerant Charging Procedures and Stop Valve Cautions

Covers refrigerant charging steps, stop valve handling, and torque specifications.

Calculating Additional Refrigerant Charge

Provides methods and formulas for calculating the total additional refrigerant charge based on various system components.

Test Run

Pre-Test Run Checks and Preparations

Details checks for piping, communication lines, electrical resistance, voltage, and compressor pre-heating.

Insulation Resistance Caution and Pre-Test Checks

Addresses insulation resistance issues and confirms pre-test checks before proceeding.

Performing the Test Run via Wired Controller

Guides users on how to initiate and conduct the test run using the wired controller and its interface.

Temperature Conditions and Test Run Operations

DIP Switch Settings for Test Run and Operation Modes

Safety and Control Device Setting

Compressor Protection Mechanisms Overview

Explains compressor protection via high pressure switches and oil heaters.