Chaffoteaux & Maury MINIMA MX2 24 FF NG User Manual

4
SERVICING INSTRUCTIONS
22
Replacement of Parts 31
22.1 To Gain General Access 31
22.1.1 Removing the front panel 31
22.1.2 Removing the side panels 31
22.1.3 Removing the control panel door 31
22.2 Access to the Combustion Chamber 32
22.2.1 Remove the combustion chamber front panel 32
22.2.2 Removing the burner manifold 32
22.2.3 Removing the electrodes 33
22.2.4 Removing the burner 33
22.2.5 Removing the main heat exchanger 34
22.2.6 Removing the air pressure switch 35
22.2.7 Removing the fan 35
22.3 Servicing and Removal of the Gas Valve 36
22.3.1 Removing the spark generator 36
22.3.2 Removing the gas valve 36
22.4 Access to the Water Circuit 37
22.4.1 Drain down 37
22.4.2 Removing the 3 way valve 37
22.4.3 Removing the float of the flow switch 37
22.4.4 Removing the pressure relief valve 38
22.4.5 Removing the secondary heat exchanger 38
22.4.6 Removing the pump 38
22.4.7 Removing the expansion vessel 39
22.4.8 Removing the overheat thermostat 39
22.4.9 Removing the heating temperature sensor (ntc) 39
22.5 Access to the Control System 40
22.5.1 Removing the P.C.B’s 40
22.5.2 Removing the fuses 40
23 INCORRECT OPERATION 41
24 FAULT FINDING 42
25 ELECTRICAL DIAGRAMS 45
26 SHORT SPARES LIST 46
27 TECHNICAL DATA 48

Chaffoteaux & Maury MINIMA MX2 24 FF NG Specifications

General

Brand	Chaffoteaux & Maury
Model	MINIMA MX2 24 FF NG
Category	Boiler
Language	English