AERMEC NXW 1250 User Manual

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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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AERMEC NXW 1250 Specifications

General

Brand	AERMEC
Model	NXW 1250
Category	Chiller
Language	English

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