Hitachi RAS-22FSXNSE User Manual

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RAS-(8-96)FSXNSE
RAS-(5-72)FSXNPE
Heat pump system
Heat recovery system
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
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РЪКОВОДСТВО С УКАЗАНИЯ
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HASZNÁLATI ÚTMUTATÓ
INSTRUKCIJU ROKASGRĀMATA
NAUDOJIMO VADOVAS
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MANUAL DE INSTRUCȚIUNI
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Hitachi RAS-22FSXNSE Specifications

General

Brand	Hitachi
Model	RAS-22FSXNSE
Category	Heat Pump
Language	English

Summary

Instructions to fill in the F-Gas Label

2 SAFETY

2.1 APPLIED SYMBOLS

Explanation of symbols used to indicate safety situations during installation and operation.

3.3 Additional information about safety

Safety Warnings and Precautions

5 TRANSPORT, LIFTING AND HANDLING OF THE UNITS

5.1 TRANSPORT OF OUTDOOR UNIT

7 Unit installation

7.1 Preliminary conditions for positioning of outdoor unit

Guidelines for selecting an optimal and safe location for the outdoor unit.

7.3 Installation

7.3.1 Installation with walls in two directions

7.3.2 Installation with walls in three directions

7.3.3 Installation with walls in four directions

8 Piping work and refrigerant charge

8.1 CONNECTION KIT selection

Guide to selecting the correct optional piping connection kit based on operating mode and unit capacity.

8.2 PIPE SIZE SELECTION

Instructions for selecting appropriate pipe sizes for refrigerant lines.

8.2.1 Size of pipes (ø mm)

Pipe diameter after first branch or between Multi-Kits...

Pipe diameter between Multi-Kit and indoor unit.

8.3 Pipe connection

Details on connecting refrigerant pipes, including accessories and precautions.

8.3.1 Accessories factory-supplied with FSXNSE units

List of factory-supplied accessories for FSXNSE units and their specifications.

8.3.2 Accessories factory-supplied with FSXNPE units

List of factory-supplied accessories for FSXNPE units and their specifications.

8.3.3 Precautions for the installation of the outdoor unit

Safety precautions and restrictions for installing outdoor units and combinations.

Refrigerant pipe installation between outdoor units

8.3.4 Refrigerant pipe connection

Detailed instructions for connecting refrigerant pipes to each outdoor unit.

8.3.6 Stop valve

Procedures and precautions for handling stop valves during refrigerant piping work.

8.4 Refrigerant Charge

8.4.1 Air-Tight Test

Procedure for performing an air-tight test to check for refrigerant leaks.

8.5 Vacuuming

8.5.1 Basic Method

Steps for performing basic vacuuming of the system.

8.5.2 Triple Evacuation Method

Detailed procedure for the triple evacuation method to remove moisture.

8.6 Additional Refrigerant Charge Calculation

Calculating method of additional refrigerant charge (W kg)

Methodology for calculating additional refrigerant charge based on various factors.

8.7 Charging work

9 Drain piping

9.1 Condensation drainage system

10 Electric wiring

10.1 General information

General information and precautions regarding electrical wiring.

10.3 Connection of the power supply circuits

Instructions for connecting power supply wires to outdoor and indoor units.

10.3.1 Power source wiring

Instructions for connecting power supply wires to outdoor and indoor units.

10.5 Setting of the DSW switches on PCB1

DSW1, RSW1: refrigerant cycle number setting

DSW4: test run and service settings

11 Commissioning

11.1 Preliminary checks

Essential checks before commissioning the system, including wiring and resistance tests.

11.2 Carry out the Test Run

11.3 Test Run procedure by Remote Control Switch (PC-ARFPE example)

12 MAIN SAFETY DEVICES

Compressor protection