Mffi A/27 Mffi, Overall View | Ariston A/27 MFFI, A/23 MFFI manual

1.3Overall View

A/23 MFFI - A/27 MFFI

Fig. 1.1

Legend:
1.	Flue Connector	14.	Drain Valve
2.	Combustion Chamber Hood	15.	Secondary Heat Exchanger
3.	Main Heat Exchanger	16.	Safety Valve (3 bar)
4.	Combustion Chamber Insulation Panel	17.	Circulation Pump with Automatic Air Release Valve
5.	Burner	18.	Gas Valve
6.	Expansion Vessel	19.	Detection Electrodes
7.	Overheat Thermostat	20.	Ignition Electrodes
8.	Spark Generator	21.	Fan
9.	Diverter Valve	22.	Venturi
10.	Main Circuit Temperature Probe	23.	Air Pressure Switch

11.Main Circuit Flow Switch

12.Diverter Valve Microswitch

13.Filter Seat

B023

5

Image 5

Ariston A/27 MFFI, A/23 MFFI, 47-116-12, 47-116-10 installation instructions Mffi A/27 Mffi, Overall View

Contents

Mffi A/27 Mffi Table of Contents General Instructions General Information Mffi Technical Information Overall View Mffi A/27 Mffi Reference Standards Siting the Appliance Installation Clearances Overall Dimensions Gas Connection Mounting the ApplianceElectrical Connection Water Connections Safety Valve DischargePipe Work By-pass Filling Flue ConnectionsMains Water Feed Central Heating Terminal Position B023 Coaxial System Room Thermostat Connection Colours Electrical Diagram B023 Mffi Commissioning Water Circuit DiagramInitial Preparation Filling the Heating System Selector Knob for Summer/Winter/Flue Analysis Modes Removing the Front PanelControl Panel Checks to be run before initial start-up are as follows Initial Start-up Operational Adjustments Overheating Ignition FailureCirculation Failure Safety Shut-off GAS AdjustmentsDraining the System Limescale Build-up Changing the Type of Gas Maintenance Miscellaneous Wiring Diagram for Two Heating Zones Blue Wiring Diagram for Connection to Ariston Unvented Cylinder B023 B023 B023 Manufacturer Merloni TermoSanitari SpA Italy Cod 99 84 1260 112 B023