AERMEC NXW 0900 - User Manual

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CHILLERS- Technical manual - installation - maintenance

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Table of Contents

Default Chapter4
- Table of Contents4
1 General Warnings6
- Storage of the Documentation6
- Safety Precautions and Installation6
2 Product Identiﬁ Cation6
3 Description and Choice of the Unit7
- Available Models7
- Available Versions7
- Description and Choice of the Unit8
4 Description of Components9
- Cooling Circuit9
- Frame9
- Hydraulic Components9
- Electrical Components9
- Electronic Regulation9
5 Accessories11
- Electric Regulation Accessories11
- Electrical Accessories11
- General Accessories11
- Electronic Regulation 911
6 Technical Data13
- Standard Version ° - L Size 0500-0550-0600-0650 0700-0800-0900-1000-1250-140013
- Standard Version H Size 0500-0550-0600-0650 0700-0800-0900-1000-1250-140015
- Standard Version E Size 0500-0550-0600-0650 0700-0800-0900-1000-1250-140017
7 Operating Limits18
- Operating Limits Standard Version18
- Operating Limit Version E (Condenserless)18
8 Corrective Factor19
- Heating Capacity and Input Power19
- For ∆T Different from the Rated Value19
- Fouling Factors19
- Cooling Capacity and Input Power20
- For ∆ T Different from the Rated Value20
- Fouling Factors20
- Cooling Capacity - Input Power Version E (Condenserless)21
- For ∆T Different from the Rated Value21
- Fouling Factors21
- Heating Capacity with Desuperheater22
- For ∆T Different from the Rated Value22
- Fouling Factors22
- Desuperheater Pressure Drops22
- Heating Capacity with Total Recovery23
- For ∆T Different from the Rated Value23
- Fouling Factors23
- Perdite DI Carico del Recupero Totale24
9 Total Pressure Drops24
- Evaporator in Cooling Operation24
- Condenser in Cooling Operation24
10 Useful Heads25
11 Minimum/Maximum Water Content in the System27
- Minimum/Maximum Content of System Water, for Units Without Hydronic Kit27
- Recommended Maximum Water Content27
- Expansion Tank Calibration27
12 Glycol28
- How to Read the Glycol Curves28
13 Cooling Lines29
14 Sound Data30
- Sound Levels of Standard Nxw Version30
- Sound Levels of Standard Silenced Version «L30
15 Safety and Check Parameter Setting31
16 Capacity Control32
17 Selection and Place of Installation34
18 Positioning34
- Minimum Technical Spaces (MM)34
19 Dimensional Tables35
20 Hydraulic Circuit39
- External Hydraulic Circuit Recommended39
- 20.2. System Load39
- 20.3. Emptying the System39
21 Percentage Distribution of Weights on Supports40
- Percentage Distribution of Weights on Supports (Version ° - Size from 0500 to 0750)40
- Percentage Distribution of Weights on Supports (Version ° - Sizes from 0800 to 1400)41
- Percentage Distribution of Weights on Supports (Version H - Sizes from 0500 to 0750)42
- Percentage Distribution of Weights on Supports (Version H - Sizes from 0800 to 1400)43
- Percentage Distribution of Weights on Supports (Version L - Sizes from 0800 to 1400)44
- Percentage Distribution of Weights on Supports (Version L - Sizes from 0800 to 1400)45
- Percentage Distribution of Weights on Supports (Version HL - Sizes from 0500 to 750)46
- Percentage Distribution of Weights on Supports (Version HL - Sizes from 0800 to 1400)47
22 Electrical Wirings48
- Recommended Section of Electric Cables48
- Connection to the Power Supply50
- Electrical Power Connection50
- Auxiliary Connections at the User/Installer Expense50
23 Control and Fi Rst Start-Up51
- 23.1. Preparation for Commissioning51
- 23.2. First Commissioning of the Machine51
- 23.3. Season Changeover51
24 Operation Characteristics52
- 24.1. Cooling Set Point52
- 24.2. Heating Set Point52
- Compressor Start-Up Delay52
- 24.4. Circulation Pump52
- 24.5. Anti-Freeze Alarm52
- Water Fl Ow Rate Alarm52
25 Regular Maintenance52
26 Extraordinary Maintenance52

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Summary

General Warnings and Product Identification

General Warnings and Safety Precautions

Essential safety instructions for installation and use of the unit.

Technical Data

Standard Version L Technical Data

Detailed technical specifications for standard version L models.

Standard Version H Technical Data

Detailed technical specifications for standard version H models.

Standard Version E Technical Data

Detailed technical specifications for standard version E models.

Installation and Electrical Wiring

Installation Site Selection and Positioning

Guidelines for selecting the installation site and unit positioning.

Minimum Technical Spaces

Electrical Wiring and Power Connection

Operation, Control, and Maintenance

Control, First Start-Up, and Commissioning

Operation Characteristics (Set Points and Alarms)

Regular and Extraordinary Maintenance

AERMEC NXW 0900 Specifications

General

Brand	AERMEC
Model	NXW 0900
Category	Chiller
Language	English

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