Ariston AV 52 Technical Information

A/23 MFFI - A/27 MFFIG.C.N. 47-116-10 / 47-116-12Installation InstructionsType C BoilersLEAVE THESE INSTRUCTIONSADJACENT TO THE GAS METERCountry of de

10B023public access.Air Release Points:These must be fitted at all high points where air naturally collects and must be sited to facilitate complete f

TERMINAL POSITION mmA - Directly below an open window or other opening 300B - Below gutters, solid pipes or drain pipes 75C - Below eaves 200D - Below

12B023This procedure must be done as follows:1 - Remove the air vent intake you want to use, in the area indicated in Fig. 2.8, by breaking the perfor

13B023In calculating the lengths of the pipes, the maximum length must also take intoconsideration the values for the exhaust/air intake end terminals

14B0235 Remove the grommet “D” shown in photo 5, make a hole in it and passthe room thermostat wire through.6 Remove the link located on the terminal

15B0232.11 Electrical DiagramLegend:AT = High Voltage P.C.B.BT = Low Voltage P.C.B.B = Flame Failure L.E.D.C = Insufficient Water Pressure L.E.D.D = W

16B023A/23 MFFI - A/27 MFFIEX C-MI/FFI8A/23 MFFI - A/27 MFFI

2.12 Water Circuit Diagram17B023A/23 MFFI - A/27 MFFILegend1. Air Pressure Switch2. Fan3. Main Heat Exchanger4. Main Burner 5. Ignition ElectrodesDe

40 50 60 70 80 C C3.3 Control PanelA - Ignition Lockout Reset Button/Safety (Overheat)Thermostat ResetB - Ignition Lockout L.E.D.C - Selector Knob fo

19B0233.4 Initial Start-upThe checks to be run before initial start-up are as follows:1. Make sure that:-the screw on the automatic air valve has been

2B023TABLE OF CONTENTS1. GENERAL INFORMATION1.1 General Instructions1.2 Technical Information1.3 Overall View2. INSTALLATION2.1 Reference Standards2.2

20B023The boiler is designed to make it easy to analyse the combustion by-products.Using the especially designed apertures, readings can be taken on t

21B023off status. After the system has been allowed to cool, the system can be resetby pressing the button “A”.4 - Limescale Build-upThis is an indire

22B0234.1 Changing the Type ofGasThe boiler can be converted to use either methane (natural) gas (G20) orLPG (G30 - G31) by an Authorised Service Cent

6. MISCELLANEOUS6.1 Wiring Diagram for Two Heating ZonesV4043HVALVEBROWN8BLUE2GREY9ORANGE10GREEN/YELLOW3Honeywell ST 699B 100263 NLLink L-5-8ST 6400/S

24B0236.2 Wiring Diagram for Connection to Ariston Unvented CylinderV4043HVALVEBROWN8BLUE2GREY9ORANGE10GREEN/YELLOW3Honeywell ST 699B 100263 NLLink L-

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26B023NOTES

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Manufacturer: Merloni TermoSanitari SpA - ItalyCommercial subsidiary: MTS (GB) LIMITEDMTS BuildingHughenden Avenue,High WycombeBucks HP13 5FTTelephone

3B023This manual is an integral and essential part of the product. It should be keptwith the appliance so that it can be consulted by the user and our

CE CertificationHeat Input max/min kW 25.6/11.0Heat Output max/min kW 23.1/9.2Efficiency of Nominal Heat Input % 90.2Efficiency at 30% of Nominal

5B023A/23 MFFI - A/27 MFFILegend:1. Flue Connector2. Combustion Chamber Hood3. Main Heat Exchanger4. Combustion Chamber Insulation Panel5. Burner6.

6B023The technical information and instructions provided herein below are intendedfor the installer so that the unit may be installed correctly and sa

7B023Legend:A = Central Heating Flow (3/4”)B = Domestic Hot Water Outlet (1/2”)C = Gas Inlet (3/4”)D = Domestic Cold Water Inlet (1/2”)E = Central Hea

8B023Fasten the boiler in place using the template and anchors supplied with theunit. It is highly recommended that a spirit level be used to position

9B0232.9 Water ConnectionsLegendA = Central Heating FlowB = Domestic Hot Water OutletC = Gas InletD = Domestic Cold Water InletE = Central Heating Ret