Ariston MicroCombi 23 MFFI Installation Instructions Manual

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Summary of Contents:

[Page 1] Ariston microCombi 23 MFFI

Installation Instructions Type C Boilers G.C.N: 47-116-16 LEAVE THESE INSTRUCTIONS WITH THE END-USER Country of destination: GB ...

[Page 2] Ariston microCombi 23 MFFI

2 TABLE OF CONTENTS 1. GENERAL INFORMATION 1.1 GENERAL INSTRUCTIONS 1.2 OVERALL VIEW 2. INSTALLATION 2.1 REFERENCE STANDARDS 2.2 SITING THE APPLIANCE 2.3 OVERALL DIMENSIONS 2.4 CLEARANCES 2.5 MOUNTING THE APPLIANCE 2.6 ELECTRICAL CONNECTION 2.7 GAS C...

[Page 3] Ariston microCombi 23 MFFI

This manual is an integral and essential part of the product. It should be kept with the appliance so that it can be consulted by the user and our authorised personnel. Please carefully read the instructions and notices about the unit contained in th...

[Page 4] Ariston microCombi 23 MFFI

4 5 - If called for by point. 3, dismantling and cleaning of the combustion chamber. 6 - If called for by point. 4, dismantling and cleaning of the burner jets. 7 - Visual check of the primary heat exchanger: - check for overheating in the blade asse...

[Page 5] Ariston microCombi 23 MFFI

5 The technical information and instructions provided herein below are intended for the installer so that the unit may be installed correctly and safely. The installation and initial start up of the boiler must be by a CORGI Registered Installer in c...

[Page 6] Ariston microCombi 23 MFFI

For safety purposes, have a competent person carefully check the electrical system in the property, as the manufacturer will not be held liable for damage caused by the failure to earth the appliance properly or by anomalies in the supply of power. M...

[Page 7] Ariston microCombi 23 MFFI

VIEW OF THE BOILER CONNECTIONS LEGEND: A = Central Heating Flow B = Domestic Hot Water Outlet C = Gas Inlet D = Domestic Cold Water Inlet E = Central Heating Return F = Safety Valve CENTRAL HEATING Detailed recommendations are given in BS 6798:1987 a...

[Page 8] Ariston microCombi 23 MFFI

8 VR003A RESIDUAL HEAD OF THE BOILER PIPE WORK: Copper tubing to BS EN 1057:1996 is recommended for water pipes. Jointing should be either with capillary soldered or compression fittings. Where possible pipes should have a gradient to ensure air is c...

[Page 9] Ariston microCombi 23 MFFI

Ø 60/100 mm FIG. 2.7 A BC D E F G J K HI L G F The boiler is designed to be connected to a coaxial flue discharge system. 9 2.9 FLUE CONNECTIONS FLUE SYSTEM The provision for satisfactory flue termination must be made in accordance with BS 5440-1....

[Page 10] Ariston microCombi 23 MFFI

Ø 80 mm The components marked * in FIG 2.9 are present or absent depending on the type of flue system used by the installer. In addition, it is also possible to use a split (twin pipe) system by fitting a special adaptor to the flue connector and u...

[Page 11] Ariston microCombi 23 MFFI

TWIN PIPE SYSTEMS FIG. 2.11 In calculating the lengths of the pipes, the maximum length “L” must also take into consideration the values for the exhaust/air intake end terminals, as well as 90° elbows for coaxial systems. The C52 types must comp...

[Page 12] Ariston microCombi 23 MFFI

12 To connect a room thermostat, it is necessary to: 1. - Open the control panel as indicated in section 3.3. 2.- Remove the link “A” from the terminal block on the reverse of the control panel. 3. - Insert the thermostat cable through the cable...

[Page 13] Ariston microCombi 23 MFFI

FIG. 2.13 13 FIG. 2.12 SE016A SF013A ...

[Page 14] Ariston microCombi 23 MFFI

14 LEGEND: 1. Fan 2. “Twin-pass” Heat Exchanger 3. Domestic Hot Water Temperature Probe 4. Burner 5. Detection Electrode 6. Ignition Electrodes 7. Gas Valve 8. Pump pressure switch 9. Safety Valve 10. D.H.W. inlet filter 11. D.H.W. Flow Switch 1...

[Page 15] Ariston microCombi 23 MFFI

15 MTS (GB) Limited support the initiative. Within the information pack you will find a copy of the logbook. It is important that this is completed in the presence of your customer, they are shown how to use it, and it is sign...

[Page 16] Ariston microCombi 23 MFFI

In order to access the inside of the boiler, it is necessary to unscrew the fastening screws “A” of the control panel located on the lower part of the panel itself. The control panel moves downward and when pulled forward rotates on two lateral h...

[Page 17] Ariston microCombi 23 MFFI

17 3.4. INITIAL START-UP To access the areas in which adjustments are made, it is necessary to open the control panel, as indicated in section 3.3, then remove the rear inspection cover by unscrewing the two screws. Access is thereby provided to the ...

[Page 18] Ariston microCombi 23 MFFI

The boiler is fitted with the following devices (see section 3.2 for references). 1 - IGNITION FAILURE: This indicates ignition failure when a flame is not detected within 7 seconds of starting an ignition sequence. The L.E.D. “I” will illuminate...

[Page 19] Ariston microCombi 23 MFFI

19 DRAINING THE HEATING SYSTEM The heating system must be emptied as follows: - Turn off the boiler; - Attach a hose pipe and open the drain valve; - Empty the system at the lowest points (where present). When the heating system is unused for an ext...

[Page 20] Ariston microCombi 23 MFFI

20 The boiler can be converted to use either methane (natural) gas (G20) or LPG (G30 - G31) by an Authorised Service Centre. The operations that must be performed are the following: 1. Replace the jets on the main burner (see table in section 4); 2. ...

[Page 21] Ariston microCombi 23 MFFI

21 It is recommended that the following inspections be carried out on the boiler at least once a year: 1 - Check the seals for the water connections; replace any faulty seals. 2 - Check the gas seals; replace any faulty gas seals. 3 - Visual check o...

[Page 22] Ariston microCombi 23 MFFI

22 6. MISCELLANEOUS 6.1 WIRING DIAGRAM FOR TWO HEATING ZONES V4043H VALVE BROWN 8 BLUE 2 GREY 9 ORANGE 10 GREEN/YELLOW 3 Honeywell ST 699B 1002 63 NL Link L-5-8 ST 6400/ST 6300 ST 6200 3 4 N L Drayton Tempus 7 3 4 N L Horstmann 425, 525, 527 14 EN L...

[Page 23] Ariston microCombi 23 MFFI

23 6.2 WIRING DIAGRAM FOR CONNECTION TO AN ARISTON UNVENTED CYLINDER Honeywell ST 699B 1002 63 NL Link L-5-8 ST 6400/ST 6300 ST 6200 3 4 N L Drayton Tempus 7 3 4 N L Horstmann 425, 525, 527 14 EN L Link L-2-5 Landis & Gyr RWB2 34 NL Glowworm Mas...

[Page 24] Ariston microCombi 23 MFFI

23 99 84 1589 000 - Stampa: bieffe RECANATI CE Certification Heat Input max/min kW Heat Output max/min kW Efficiency of Nominal Heat Input % Efficiency at 30% of Nominal Heat Input % Heat Loss to the Casing (∆T=50°C) % Flue Heat Loss with Bur...