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Ariston FAST EVO - User Manual

Ariston FAST EVO
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FAST EVO
User’s manual
Installation and Servicing instructions
INSTANTANEOUS GAS
WATER HEATER
FAST EVO ONT B 11
FAST EVO ONT B 14
FAST EVO ONT B 16
TYPE: B
Important:
Read these instructions for use carefully so as to familiarize yourself with the
appliance before concerning it to its gas container.Keep these instructions for
future reference.
WARNING
TO BE INSTALLED BY APPROVED
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Summary

Users Manual

General Warnings and Safety Regulations

General safety precautions, rules, symbols, and warnings for operating the appliance.

Control Panel and Battery Management

Description of the control panel, inserting, and replacing appliance batteries.

Ignition, Adjustment, and Shut-off Procedures

Steps for igniting, adjusting power/temperature, and switching off the appliance.

Appliance Shut-off Conditions and Anti-freeze Protection

Explains automatic shut-off conditions and measures for freezing protection.

Maintenance Guidelines

Guidelines and schedule for maintaining the appliance.

Installation and Servicing Instructions

Overview and Installer Advice

Introduction to installation/servicing and advice for qualified technicians.

Installation Safety Regulations

Safety regulations specifically for installation and servicing work.

Product Description and Technical Specifications

Details about appliance components, dimensions, and technical data.

Installation Procedures and Connections

General installation steps, gas, water, and flue gas discharge connections.

Electrical Diagram and Microswitch Settings

The appliance's electrical wiring diagram and microswitch configuration.

Commissioning and Gas Settings Check

Steps for initial setup, commissioning, and checking gas settings.

Appliance Protection Devices

Overview of the appliance's safety and protection mechanisms.

Maintenance Procedures

Detailed instructions for performing maintenance on the appliance.

Warranty Information

Warranty Periods Summary

Summary of warranty periods for different product types and components.

Warranty Procedure and Support Contacts

Steps for warranty claims and contact details for after-sales service.

Overview

This document serves as a comprehensive user and installation manual for the ARISTON FAST EVO instantaneous gas water heater, a Type B appliance designed for domestic hot water production. It provides detailed instructions for safe installation, operation, and maintenance, emphasizing the importance of professional handling and adherence to safety regulations.

The FAST EVO water heater is an instantaneous gas appliance, meaning it heats water on demand rather than storing it. This design ensures a continuous supply of hot water for domestic use. The appliance is equipped with a control panel featuring a single knob for ON/OFF switching and temperature adjustment, along with a red LED indicator for error signals and battery replacement alerts. It operates using two 1.5V LR20 batteries for ignition.

Function Description

The primary function of the FAST EVO is to provide hot water for domestic use. When a hot water tap is opened, the device automatically senses the water flow and initiates the ignition procedure. Gas is supplied to the burner, and the water flowing through the heat exchanger is rapidly heated. The temperature and power of the appliance can be adjusted using the control knob. Turning the knob clockwise increases power and temperature, while turning it anticlockwise decreases them. When the tap is closed, the device automatically switches off, conserving energy.

The appliance incorporates several safety features to ensure reliable operation. It is protected from malfunctions by an internal electronic P.C.B. (Printed Circuit Board) that stops the appliance if an anomaly is detected. Error codes are indicated by the red LED, guiding users or technicians to identify and resolve issues such as battery exhaustion, no hot water production, no flame detection, or a defective gas valve.

A crucial safety component is the flue gas sensor, which monitors the discharge of combustion products. In the event of an anomaly in flue gas discharge, the appliance temporarily shuts down to prevent the backflow of exhaust gases into the installation room, which could lead to carbon monoxide intoxication. After a 12-minute waiting period, the appliance attempts to reignite; if normal conditions are restored, it operates as usual. If not, the shutdown cycle repeats. Users are explicitly warned against tampering with or decommissioning this sensor.

The device also includes anti-freeze protection. If installed in areas subject to freezing, it is recommended to drain the appliance and system pipework to prevent frost damage. This involves turning off the appliance, removing batteries, closing the cold water inlet isolation valve, and opening DHW taps until the system is completely empty.

Usage Features

Operating the FAST EVO is straightforward. Before initial use, ensure the cold water fitting cock and gas cock are open, and the batteries are correctly inserted. The control knob should be set between the minimum and maximum positions to prepare the device for operation. Once a tap is opened, the appliance automatically starts. The water temperature can be adjusted to suit user preferences, with a warning that water temperatures above 50°C can cause serious burns, necessitating verification before use.

The appliance is designed for use with LPG (Liquefied Petroleum Gas) and requires a suitable LPG regulator that complies with SANS 1237. The installation location must meet specific ventilation requirements for Type B appliances, as combustion air is drawn directly from the room. It should not be installed near heat sources or in environments where temperatures may drop below 0°C.

For areas with hard water (exceeding 200 mg/L), the installation of a water softener is recommended to prevent limestone precipitation in the heat exchanger, as damage caused by limestone is not covered under warranty. The device is equipped with a filter at the cold water inlet, which should be periodically cleaned to maintain hydraulic system efficiency. It is crucial not to activate the device without this filter.

Maintenance Features

Regular maintenance is essential for the safe, efficient, and durable operation of the FAST EVO water heater. An annual maintenance check-up by a competent person is recommended. This includes:

  • Visual inspection: Checking the overall condition of the appliance.
  • Seal inspection: Verifying seals in both water and gas parts, replacing gaskets if necessary.
  • Combustion system check: Visually inspecting, disassembling, and cleaning the burner and combustion chamber.
  • Electrode cleaning: Removing oxide from the detection electrode using an emery cloth.
  • Heat exchanger cleaning: Ensuring the primary heat exchanger is clean.
  • Safety device check: Confirming the correct operation of temperature limit safety devices and flue gas safety.
  • Gas part safety device check: Verifying the absence of gas or flame safety device (ionisation) operation.
  • DHW production efficiency check: Testing the flow rate and temperature.
  • Cold water inlet filter cleaning: Maintaining the cleanliness of the filter.

Before any maintenance work, the batteries must be removed, and the gas valve closed. To access the internal components, the control knob and three screws must be removed, and the casing unhooked from the frame. After maintenance, all initial settings must be restored.

The manual also outlines specific procedures for checking gas settings, including supply pressure, maximum and minimum burner pressure, and slow ignition power. These adjustments require specialized tools like a manometer and should only be performed by qualified technicians. The microswitch settings, detailed in a table, allow for precise control over maximum power, soft light adjustment, and minimum power.

In case of a malfunction or repeated intervention, users are instructed to switch off the appliance, close the gas valve, remove the batteries, and contact a qualified technician. It is emphasized that only original spare parts should be used for repairs, and all maintenance work must follow the provided instructions carefully.

The warranty procedure highlights that installation and repairs must be performed by qualified plumbers and gas installers, respectively, to maintain warranty validity. The appliance must remain in its original installation location for warranty claims, and customers should report problems directly to the service center, providing necessary information such as serial number, date of manufacturing, proof of purchase, and contact details.

Ariston FAST EVO Specifications

General IconGeneral
Energy EfficiencyA
Voltage220-240 V
ColorWhite
DimensionsVaries by model
WeightVaries by model
InstallationWall mounted
PowerVaries by model
Frequency50Hz

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