Hitachi RWD-2.5RW1E-220S User Manual

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INSTRUCTION
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YUTAKI S COMBI SERIES
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RWD-(2.0-6.0)(N/R)W1E-220S(-K)
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PMML0573 rev.1 - 07/2021

Hitachi RWD-2.5RW1E-220S Specifications

General

Brand	Hitachi
Model	RWD-2.5RW1E-220S
Category	Heat Pump
Language	English

Summary

SAFETY

2.2 ADDITIONAL INFORMATION ABOUT SAFETY

Essential safety guidelines and precautions for unit operation and installation.

ELECTRICAL AND CONTROL SETTINGS

5.1 GENERAL CHECK

Ensures power supply, EMC compliance, and impedance requirements are met.

5.2 SYSTEM WIRING DIAGRAM

Illustrates electrical connections between indoor, outdoor units, and the operating line.

5.3 WIRING SIZE AND MINIMUM REQUIREMENTS OF THE PROTECTION DEVICES

Specifies cable sizes, protection devices (CB, ELB), and their ratings for unit installation.

5.6 SETTING OF DIP SWITCHES AND RSW SWITCHES

Explains DIP switch and rotary switch functions and settings for unit configuration.

UNIT INSTALLATION

6.3 INSTALLATION OF INDOOR UNIT

Step-by-step procedure for installing the indoor unit, including piping and wiring.

6.3.5 Power and transmission wiring connection

Guidance on connecting power supply and transmission wiring, including safety precautions.

COMISSIONING

7.1 BEFORE OPERATION

Pre-operation checks and recommendations, including supply power duration.

7.2 PRELIMINARY CHECK

Methodical checks after installation before system handover to the customer.

7.2.2 Electrical checking

Verifies electrical resistance, leakage, voltage, and component compliance with standards.

7.2.3 Hydraulic circuit checking (space heating and DHW)

Checks for correct flushing, filling, pressure, and absence of leaks in water circuits.

7.2.4 Checking the refrigerant circuit

7.3 COMMISSIONING PROCEDURE

7.4 TEST RUN / AIR PURGE