Instruction/ maintenance manual of the product A/27 MFFI Ariston
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A/23 MFFI - A/27 MFFI G.C .N. 47-116-10 / 47-116-12 Installation Instructions T ype C Boilers LEA VE THESE INSTRUCTIONS ADJA CENT TO THE GAS METER Countr y of destination: GB.
2 B023 T ABLE OF CONTENTS 1. GENERAL INFORMA TION 1.1 General Instructions 1.2 T echnical Information 1.3 Ov erall View 2. INST ALLA TION 2.1 Ref erence Standards 2.2 Siting the Appliance 2.3 Ov erall Dimensions 2.4 Clearances 2.5 Mounting the Appliance 2.
3 B023 This manual is an integr al and essential par t of the product. It should be kept with the appliance so that it can be consulted by the user and our authorised personnel.
CE Cer tification Heat Input max/min kW 25.6/11.0 Heat Output max/min kW 23.1/9.2 Efficiency of Nominal Heat Input % 90.2 Efficiency at 30% of Nominal Heat Input % 87.8 Heat Loss to the Casing (³T=50°C) % 1.2 Flue Heat Loss with Burner Operating % 8.
5 B023 A/23 MFFI - A/27 MFFI Legend: 1. Flue Connector 2. Combustion Chamber Hood 3. Main Heat Exchanger 4. Combustion Chamber Insulation P anel 5. Burner 6. Expansion V essel 7. Ov erheat Ther mostat 8. Spark Generator 9. Diverter V alv e 10. Main Circuit T emperature Probe 11.
6 B023 The technical inf or mation and instructions provided herein below are intended f or the installer so that the unit may be installed correctly and saf ely .
7 B023 Legend: A = Central Heating Flow (3/4”) B = Domestic Hot W ater Outlet (1/2”) C = Gas Inlet (3/4”) D = Domestic Cold W ater Inlet (1/2”) E = Central Heating Return (3/4”) 2.
8 B023 F asten the boiler in place using the template and anchors supplied with the unit. It is highly recommended that a spirit lev el be used to position the boiler so that it is perf ectly lev el. F or additional information, please consult the instructions contained in the connection kit and the flue kit.
9 B023 2.9 W ater Connections Legend A = Central Heating Flow B = Domestic Hot W ater Outlet C = Gas Inlet D = Domestic Cold W ater Inlet E = Central Heating Return I = Saf ety V alve Central Heating Detailed recommendations are given in BS 6798:1987 and BS 5449-1:1990, the f ollowing notes are giv en for gener al guidance.
10 B023 public access . Air Release P oints: These must be fitted at all high points where air naturally collects and m ust be sited to f acilitate complete filling of the system. The appliance has an integral sealed e xpansion v essel to accommodate the increase of water v alue when the system is heated.
TERMINAL POSITION mm A - Directly below an open windo w or other opening 300 B - Below gutters , solid pipes or drain pipes 75 C - Below ea ves 200 D - Below balconies or car-port roof 200 E - F rom v.
12 B023 This procedure must be done as f ollows: 1 - Remov e the air vent intak e you w ant to use, in the area indicated in Fig. 2.8, b y breaking the perfor ated r ing. 2 - Use a tool to gr asp the lid and remov e it completely . 3 - Clean any b urrs or shar p edges with a knif e or an appropr iate tool.
13 B023 In calculating the lengths of the pipes, the maximum length m ust also take into consideration the v alues for the e xhaust/air intak e end ter minals, as well as 90° elbows f or coaxial systems. The C52 types must comply with the f ollowing requirements: 1.
14 B023 5 Remov e the grommet “D” shown in photo 5, mak e a hole in it and pass the room ther mostat wire through. 6 Remov e the link located on the ter minal and connect the wire. 7 Replace the grommet and the terminal to their or iginal positions, close the cov er on the grommet compar tment and f asten the wire-clamp “C” in place.
15 B023 2.11 Electrical Diagram Legend: A T = High V oltage P .C .B. BT = Low V oltage P .C .B. B = Flame F ailure L.E.D . C = Insufficient W ater Pressure L.E.D . D = W ater T emperature Indicator L.E.D .s E = Overheat Thermostat Warning L.E.D . F = System Reset Button G = Selector Knob f or Operating Mode H = Domestic Hot W ater T emp .
16 B023 A/23 MFFI - A/27 MFFI EX C-MI/FFI 8 A/23 MFFI - A/27 MFFI.
2.12 W ater Cir cuit Diagram 17 B023 A/23 MFFI - A/27 MFFI Legend 1. Air Pressure Switch 2. F an 3. Main Heat Exchanger 4. Main Burner 5. Ignition Electrodes Detection Electrode 6. Gas V alv e 7. Ov erheat Ther mostat 8. Main Circuit T emperature Probe 9.
40 50 60 70 80 C C 3.3 Contr ol P anel A - Ignition Loc kout Reset Button/Saf ety (Overheat)Thermostat Reset B - Ignition Loc kout L.E.D . C - Selector Knob for Summer/Winter/Flue Analysis Modes* D - Low System W ater Le vel L.
19 B023 3.4 Initial Start-up The chec ks to be run before initial start-up are as follows: 1. Make sure that: - the screw on the automatic air v alve has been loosened when the system is full; - If th.
20 B023 The boiler is designed to make it easy to analyse the comb ustion by-products . Using the especially designed aper tures, readings can be tak en on the temperature of the comb ustion by-products and of the comb ustion air , as well as of the concentrations of O 2 and CO 2 , etc.
21 B023 off status. After the system has been allowed to cool, the system can be reset by pressing the b utton “A”. 4 - Limescale Build-up This is an indirect control (actuated through the regulation of the temperature in the primar y heat exchanger) on the f ormation of limescale in the secondar y heat e xchanger .
22 B023 4.1 Changing the T ype of Gas The boiler can be con verted to use either methane (natural) gas (G20) or LPG (G30 - G31) by an A uthorised Service Centre. The operations that must be perf ormed are the follo wing: 1. Replace the jets on the main burner (see table in section 4); 2.
6. MISCELLANEOUS 6.1 Wiring Diagram f or T wo Heating Zones V4043H VA LV E BRO WN 8 BLUE 2 GREY 9 ORANGE 10 GREEN/YELLO W 3 Honeywell ST 699B 1002 63 N L Link L-5-8 ST 6400/ST 6300 ST 6200 3 4 N L Dra.
24 B023 6.2 Wiring Diagram f or Connection to Ariston Un vented Cylinder V4043H VA LV E BRO WN 8 BLUE 2 GREY 9 ORANGE 10 GREEN/YELLO W 3 Honeywell ST 699B 1002 63 N L Link L-5-8 ST 6400/ST 6300 ST 620.
NO TES 25 B023.
26 B023 NO TES.
27 B023.
Manuf acturer : Merloni T ermoSanitari SpA - Italy Commercial subsidiar y: MTS (GB) LIMITED MTS Building Hughenden A ven ue, High Wycombe Bucks HP13 5FT T elephone: (01494) 755600 - F ax: (01494) 459775 T echnical Service Hotline: (01494) 539579 Cod.
An important point after buying a device Ariston A/27 MFFI (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Ariston A/27 MFFI yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Ariston A/27 MFFI - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Ariston A/27 MFFI you will learn all the available features of the product, as well as information on its operation. The information that you get Ariston A/27 MFFI will certainly help you make a decision on the purchase.
If you already are a holder of Ariston A/27 MFFI, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Ariston A/27 MFFI.
However, one of the most important roles played by the user manual is to help in solving problems with Ariston A/27 MFFI. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Ariston A/27 MFFI along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
