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

Models: A/27 MFFI 47-116-10 47-116-12 A/23 MFFI

1 28

Page 5

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

Image 5

Contents

Mffi A/27 Mffi Table of Contents General Instructions General InformationMffi Technical InformationOverall View Mffi A/27 MffiReference Standards Siting the Appliance InstallationClearances Overall DimensionsGas Connection Mounting the ApplianceElectrical Connection Water Connections Safety Valve DischargePipe Work By-passFilling Flue ConnectionsMains Water Feed Central Heating Terminal Position B023 Coaxial System Room Thermostat Connection Colours Electrical DiagramB023 Mffi Commissioning Water Circuit DiagramInitial Preparation Filling the Heating SystemSelector 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 AdjustmentsOverheating Ignition FailureCirculation Failure Safety Shut-off GAS AdjustmentsDraining the System Limescale Build-upChanging the Type of Gas MaintenanceMiscellaneous Wiring Diagram for Two Heating ZonesBlue Wiring Diagram for Connection to Ariston Unvented CylinderB023 B023 B023 Manufacturer Merloni TermoSanitari SpA Italy Cod 99 84 1260 112 B023