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NXW 0750
AERMEC NXW 0750 User Manual
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CHIL
LERS- Technical manual - installation - maintenance
NXW
INXWPY. 1004. 4438805_00
EN
L
LER
S
- Techn
i
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i
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on - ma
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nanc
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2
Table of Contents
Default Chapter
4
Table of Contents
4
1 General Warnings
6
Storage of the Documentation
6
Safety Precautions and Installation
6
2 Product Identifi Cation
6
3 Description and Choice of the Unit
7
Available Models
7
Available Versions
7
Description and Choice of the Unit
8
4 Description of Components
9
Cooling Circuit
9
Frame
9
Hydraulic Components
9
Electrical Components
9
Electronic Regulation
9
5 Accessories
11
Electric Regulation Accessories
11
Electrical Accessories
11
General Accessories
11
Electronic Regulation 9
11
6 Technical Data
13
Standard Version ° - L Size 0500-0550-0600-0650 0700-0800-0900-1000-1250-1400
13
Standard Version H Size 0500-0550-0600-0650 0700-0800-0900-1000-1250-1400
15
Standard Version E Size 0500-0550-0600-0650 0700-0800-0900-1000-1250-1400
17
7 Operating Limits
18
Operating Limits Standard Version
18
Operating Limit Version E (Condenserless)
18
8 Corrective Factor
19
Heating Capacity and Input Power
19
For ∆T Different from the Rated Value
19
Fouling Factors
19
Cooling Capacity and Input Power
20
For ∆ T Different from the Rated Value
20
Fouling Factors
20
Cooling Capacity - Input Power Version E (Condenserless)
21
For ∆T Different from the Rated Value
21
Fouling Factors
21
Heating Capacity with Desuperheater
22
For ∆T Different from the Rated Value
22
Fouling Factors
22
Desuperheater Pressure Drops
22
Heating Capacity with Total Recovery
23
For ∆T Different from the Rated Value
23
Fouling Factors
23
Perdite DI Carico del Recupero Totale
24
9 Total Pressure Drops
24
Evaporator in Cooling Operation
24
Condenser in Cooling Operation
24
10 Useful Heads
25
11 Minimum/Maximum Water Content in the System
27
Minimum/Maximum Content of System Water, for Units Without Hydronic Kit
27
Recommended Maximum Water Content
27
Expansion Tank Calibration
27
12 Glycol
28
How to Read the Glycol Curves
28
13 Cooling Lines
29
14 Sound Data
30
Sound Levels of Standard Nxw Version
30
Sound Levels of Standard Silenced Version «L
30
15 Safety and Check Parameter Setting
31
16 Capacity Control
32
17 Selection and Place of Installation
34
18 Positioning
34
Minimum Technical Spaces (MM)
34
19 Dimensional Tables
35
20 Hydraulic Circuit
39
External Hydraulic Circuit Recommended
39
20.2. System Load
39
20.3. Emptying the System
39
21 Percentage Distribution of Weights on Supports
40
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 Wirings
48
Recommended Section of Electric Cables
48
Connection to the Power Supply
50
Electrical Power Connection
50
Auxiliary Connections at the User/Installer Expense
50
23 Control and Fi Rst Start-Up
51
23.1. Preparation for Commissioning
51
23.2. First Commissioning of the Machine
51
23.3. Season Changeover
51
24 Operation Characteristics
52
24.1. Cooling Set Point
52
24.2. Heating Set Point
52
Compressor Start-Up Delay
52
24.4. Circulation Pump
52
24.5. Anti-Freeze Alarm
52
Water Fl Ow Rate Alarm
52
25 Regular Maintenance
52
26 Extraordinary Maintenance
52
4
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AERMEC NXW 0750 Specifications
General
EER class
A
Refrigerant
R134a
Acoustic configuration
Standard
Compressor
Screw
Power Supply
400V/3Ph/50Hz
Type
Air-cooled
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