CLIMAVENETA a-CXW 702 User Manual

USER AND INSTALLATION MANUAL
EN - CASSETTE FAN COILS
EN) Please carefully read this manual
before operating the appliance.
2019/04
MODELS
a-CXW
i-CXW

CLIMAVENETA a-CXW 702 Specifications

General

Brand	CLIMAVENETA
Model	a-CXW 702
Category	Air Conditioner
Language	English

Summary

Fundamental Safety Rules

Accessories

HB / i-HB Power Board Kit

Fan Coil Wiring Diagram with Control Units and Expansion Kit

RS485 Kit - Interface for Centralised Management Systems

Electrical Connections

HB

i-HB

RS485 Kit - Interface for Centralised Management Systems

Electrical Connections

BMS Integration with Local Master-Slave Networks

Explains how to integrate local networks into BMS using Modbus protocol.

Wiring diagram for BMS supervision system (e.g. IDRORELAX) with series of local Master-Slave networks and multiple Master units.

Controls

MTW wall mounted thermostat

Details the features and functions of the MTW wall-mounted thermostat.

ATW wall mounted thermostat

Describes the functions and configuration options of the ATW thermostat.

ATW-EC wall mounted thermostat

Explains the features of the ATW-EC thermostat, including BMS connection limitations.

EKW wall mounted thermostat

Details the features of the EKW thermostat, including Modbus protocol for BMS.

iKW wall mounted programmable thermostat with LCD screen

Describes the iKW thermostat with LCD, programmable features, and BMS compatibility.

IR Remote control

Technical Specifications

a-CXW 2-pipe system

Provides detailed technical data for the a-CXW 2-pipe system.

a-CXW 0402-0404-0502-0504-0602-0604-0702-0704

a-CXW 0802-0804-1102-1104-1202-1204

a-CXW 4-pipe system

Presents detailed technical data for the a-CXW 4-pipe system.

i-CXW 2-pipe system

Provides detailed technical data for the i-CXW 2-pipe system.

i-CXW 4-pipe system

Presents detailed technical data for the i-CXW 4-pipe system.

General Warnings

For Installation

For Maintenance and Repairs

Details safety precautions for maintenance and repair operations.

Installation

Preparation for installation

Place of installation

Mechanical Installation

Fixing the fan coil

Procedure

Water Connection

Water parameters

Heat transfer fluid

Valve connections

Water Side Pressure Drop

a-CXW Four-pipe system

Cold water coil pressure drop

Electrical Connection

Make the electrical connections according to the national laws and regulations in force

Power, control and valve cables

Electric Coil

Describes the optional electric heater, its management, and safety thermostats.

Installation with Valves Supplied by the Installer

Wiring Diagrams

a-CXW BASIC AC unit diagrams: Connection diagram between the MTW wall-mounted controller and the AC unit

Shows the wiring diagram for a-CXW with MTW controller, without valves.

a-CXW BASIC AC unit diagrams: Connection diagram between the ATW wall-mounted controller and the AC unit

Wiring diagram for a-CXW with ATW controller, without valves.

a-CXW BASIC AC unit diagrams: Connection diagram between the ATW wall-mounted controller and the AC unit with electric heater

Wiring diagram for a-CXW with electric heater and ATW controller.

a-CXW AC unit diagrams WITH ELECTRONICS: Wiring diagram for cassette units (asynchronous) and connection to EKW and IKW wall-mounted controllers

Wiring diagram for a-CXW with electronics, EKW/IKW controllers.

i-CXW AC unit diagrams WITH ELECTRONICS: Wiring diagram for cassette units (asynchronous with electric heater) and connection to EKW and IKW wall-mounted controllers

Wiring diagram for i-CXW with electric heater, EKW/IKW controllers.

Diagram with electric heater and single actuator

Wiring diagram for i-CXW with electric heater, single actuator.

i-CXW BASIC EC unit diagrams: Connection diagram between the ATW-EC wall-mounted controller and the ECM hydronic unit

Wiring diagram for i-CXW EC unit with ATW-EC controller.

i-CXW BASIC EC unit diagrams: Connection diagram between the ATW-EC wall-mounted controller and the ECM hydronic unit with electric heater

Wiring diagram for i-CXW EC unit with electric heater and ATW-EC controller.

Diagram with electric heater and single actuator

Wiring diagram for i-CXW EC unit with electric heater, single actuator.

i-CXW EC unit diagrams WITH ELECTRONICS: Wiring diagram for cassette units (asynchronous) and connection to EKW and IKW wall-mounted controllers

Wiring diagram for i-CXW with electronics, EKW/IKW controllers.

Diagram with single actuator

Diagram with double actuator

General Installation Warnings and Maintenance Plan

General installation instructions and maintenance plan

General safety requirements

Lists safety rules for appliance use, installation, and maintenance.

Maintenance plan

Faults and Solutions

The fan is noisy

Cleaning, Maintenance, Spare Parts

Troubleshooting

FAULT 1 - The motor does not turn or turns incorrectly.

Lists common causes and solutions for motor failure or malfunction.

FAULT 2 - The appliance does not heat/cool as it did previously.

Covers issues causing reduced heating or cooling performance.

The fan does not work *

Lists causes and solutions for the fan not working.

Insufficient air flow from the fan

The fan coil does not heat the room (sufficiently)

Lists reasons and fixes for insufficient heating.

The fan coil does not cool the room (sufficiently)

Covers causes and solutions for insufficient cooling.