AERMEC NXW 0800 User Manual

CHILLERS- Technical manual - installation - maintenance
NXW
INXWPY. 1004. 4438805_00
EN
L
LER
S
- Techn
i
cal manual -
i
nstallat
i
on - ma
i
nt
e
e
nanc
e

AERMEC NXW 0800 Specifications

General

Brand	AERMEC
Model	NXW 0800
Category	Chiller
Language	English

Summary

General Warnings

Safety Precautions and Installation

Crucial safety measures and installation guidelines for qualified technicians.

Unit Description and Selection

Component Descriptions

Cooling Circuit Components

Details compressor, evaporator, condensers, filter-drier, and valves.

Hydraulic Components

Covers flow switches, pumps, filters, drain valves, and expansion tanks.

Safety and Control Components

Explains pressure transducers, switches, and safety valves.

Electronic Regulation System

Microprocessor Control Functions

Lists multilingual menu, phase sequence control, and compressor management.

Advanced Regulation Systems

Standard Version Technical Data

Cooling/Heating Performance

Cooling/heating capacity, input power, flow rates, pressure drops.

Energy Indexes and Electrical Data

EER, EEEC, ESEER, COP, input currents.

Standard Version Technical Data - Additional Components

Desuperheater, Pump, and Expansion Tank Data

Sound Data and Dimensions

Sound levels and unit dimensions.

Standard Version H Technical Data

Cooling/Heating Performance (H Version)

Capacity, power, flow rates, pressure drops for H version.

Energy Indexes and Electrical Data (H Version)

EER, EEEC, ESEER, COP, input currents for H version.

Standard Version H Technical Data - Additional Components

Pump, Expansion Tank, Sound, and Dimensions (H Version)

Pump specs, expansion tank, sound, dimensions for H version.

Standard Version E Technical Data

Cooling/Heating Performance (E Version)

Capacity, power, flow rates, pressure drops for E version.

Energy Indexes and Electrical Data (E Version)

EER, EEEC, ESEER, COP, input currents for E version.

Operating Limits

Standard Version Operating Limits

Condenserless Version Operating Limits

Corrective Factors

Heating Capacity and Input Power Correction

Explains correction factors for heating capacity and input power.

Correction Factors for Temperature Differences

Fouling Factors

Cooling Capacity and Input Power Correction

Cooling Capacity Correction Factors

Details correction factors for cooling capacity and input power.

Evaporator AT Correction Factors

Condenserless Cooling Capacity and Input Power Correction

Condenserless Capacity Correction Factors

Details correction factors for condenserless version's capacity and input power.

Condenser AT Correction Factors

Pressure Drops

Evaporator Pressure Drops (Cooling)

Condenser Pressure Drops (Cooling)

Expansion Tank Calibration

Expansion Tank Calibration Procedure

Glycol Considerations

Glycol Correction Factors

Sound Data

Standard NXW Version Sound Levels

Silenced NXW Version Sound Levels

Safety and Parameter Settings

Check Parameters and Set Points

Defines cooling/heating set points and antifreeze intervention temperatures.

Switch and Transducer Settings

Cooling Circuit Safety Settings

Capacity Control (Cooling)

Cooling Capacity and Input Power Steps

Details cooling capacity steps and input power percentages.

Capacity Control (Heating)

Heating Capacity and Input Power Steps

Details heating capacity steps and input power percentages.

Installation Site Selection

Location and Access Requirements

Advises on choosing the location, considering weight and access.

Installation by Qualified Technician

Emphasizes installation by a qualified technician per national laws.

Unit Positioning

Lifting and Transport Guidelines

Instructions for safe lifting, handling, and transport of the unit.

Minimum Technical Spaces

Installation Clearance Requirements

Provides diagrams and dimensions for required installation clearance.

Hydraulic Circuit Description

Standard Version Hydraulic Components

System Load and Emptying Procedures

Details loading and draining the hydraulic system.

Weight Distribution (Sizes 0500-0750)

Standard Version Weight Distribution (0500-0750)

H Version Weight Distribution (0500-0750)

Weight Distribution (Sizes 0800-1400)

Standard Version Weight Distribution (0800-1400)

H Version Weight Distribution (0800-1400)

Weight Distribution (H Version, Sizes 0500-0750)

Weight Distribution for H Versions (0500-0750)

Weight Distribution (H Version, Sizes 0800-1400)

Weight Distribution for H Versions (0800-1400)

Weight Distribution (L Version, Sizes 0800-1400)

Weight Distribution (L Version, Sizes 0800-1400) - Continued

Weight Distribution for L Versions (0800-1400)

Weight Distribution (HL Version, Sizes 0500-0750)

Weight Distribution for HL Versions (0500-0750)

Weight Distribution (HL Version, Sizes 0800-1400)

Weight Distribution for HL Versions (0800-1400)

Electrical Wiring and Connections

Electrical Wiring Guidelines

General guidelines for electrical wiring, safety, and regulations.

Recommended Electric Cable Sections (No Pumps)

Electrical Wiring and Connections - Continued

Recommended Electric Cable Sections (With Pumps)

Power Supply Connection

Accessing the Electric Box

Electrical Power Connection Procedure

Details the functional connection of the power supply cable to the unit.

Control and Initial Start-Up

Preparation for Commissioning

Checklist before starting the unit, including safety and connections.

First Commissioning Steps

Procedure for activating the unit and checking the display.

Operation Characteristics

Cooling and Heating Set Points

Compressor Start-Up Delay

Circulation Pump and Water Flow Rate Alarms

Describes pump control and water flow rate alarm functions.

Anti-Freeze Alarm Function

Details the anti-freeze alarm activation and its effects on the unit.

Refrigerant Loading Procedure

Refrigerant Charging Steps

Step-by-step guide for charging the cooling circuit with refrigerant.