Stulz ASR 401 AS User Manual

STULZ the natural choice
Instructions
Index G17D
Issue 11.2015
CyberAir 3 PRO DX
ASR/ALR series
Precision Air Conditioning Units
380-415/3/50
Original instructions

Stulz ASR 401 AS Specifications

General

Cooling capacity	4.0 kW
Dimensions (H x W x D)	1990 x 900 x 500 mm
Weight	280 kg
Refrigerant	R410A
Air Flow Rate	800 m³/h

Summary

1. Safety

1.2 Safety Instructions

General safety guidelines for installation, operation, and maintenance.

1.3 Handling Refrigerants

Guidelines for handling refrigerants according to safety regulations.

1.4 Safety and Environmental Requirements

2. Residual Risks

3. Transport / Storage

4. Description

4.4 Function

Explains the operation of the A/C unit and its dehumidification process.

5. Technical Data

5.1 Application Limits

Specifies admissible operating conditions, storage, and UPS system requirements.

5.2 Technical Data - ASR ... A - 1-circuit

5.3 Technical Data - ASR ... A² - 2-circuits

5.4 Technical Data - ALR ... GE - 1-circuit

5.5 Technical Data - ALR ... GE - 2-circuits

5.6 Technical Data - ASR ... AS - 1-circuit

5.7 Technical Data - ASR ... AS² - 2-circuits

5.8 Technical Data - ALR ... GES - 1 circuit

5.9 Technical Data - ALR ... GES - 2 circuits

6. Installation

6.1 Positioning

Guidelines for selecting an installation site and positioning the A/C unit.

6.2 Connection of the Piping

6.2.1 Refrigerant Piping (A/AS Units)

Instructions for connecting refrigerant piping for A/AS units to external condensers.

A/C Units with Speed Controlled Compressor

6.2.1.5 Filling the Refrigerant Circuit

6.2.2 Water Piping (GE/GES Units)

External Water Circuit

6.3 Electrical Connection

Connection of Electric Cables in the Fan Unit

Instructions for routing power and control cables within the fan unit.

Insertion of the Power Supply Cable

7. Commissioning

E-box for A/C Units with Speed Controlled Compressor

µPC Electronic Board

Operation of the Terminal PGD1

Inverter Connections

8. Maintenance

8.1 Safety Instructions

General safety instructions and procedure steps for maintenance work.

8.2 Maintenance Intervals

8.3 Refrigerant Circuit

Refrigerant Charge - Quantity and Purity

Guidance on checking refrigerant quantity, purity, and leak detection.

8.4 Air Circuit

9. Malfunction

10. Dismantling and Disposal

12.1 Steam Humidifier

12.1.1.3 Configuration of the Control Unit ECCM/S

12.1.3 Operation

12.1.3.2 Commissioning

Step-by-step guide for commissioning the steam humidifier.

12.1.4 Fault Elimination

12.1.4.1 Fault Indication

How to interpret LED indications for malfunctions and errors.

12.1.4.4 Malfunction Lists

12.5 Electrical Options

12.5.1 Three Phase Control

12.5.3 Compressor Softstart

12.5.4 Manual Override Board