Do you have a question about the Ariston FAST EVO and is the answer not in the manual?
General safety precautions, rules, symbols, and warnings for operating the appliance.
Description of the control panel, inserting, and replacing appliance batteries.
Steps for igniting, adjusting power/temperature, and switching off the appliance.
Explains automatic shut-off conditions and measures for freezing protection.
Guidelines and schedule for maintaining the appliance.
Introduction to installation/servicing and advice for qualified technicians.
Safety regulations specifically for installation and servicing work.
Details about appliance components, dimensions, and technical data.
General installation steps, gas, water, and flue gas discharge connections.
The appliance's electrical wiring diagram and microswitch configuration.
Steps for initial setup, commissioning, and checking gas settings.
Overview of the appliance's safety and protection mechanisms.
Detailed instructions for performing maintenance on the appliance.
Summary of warranty periods for different product types and components.
Steps for warranty claims and contact details for after-sales service.
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.
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.
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.
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:
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.
| Energy Efficiency | A |
|---|---|
| Voltage | 220-240 V |
| Color | White |
| Dimensions | Varies by model |
| Weight | Varies by model |
| Installation | Wall mounted |
| Power | Varies by model |
| Frequency | 50Hz |












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