DE DIETRICH INNOVENS MCA 15 - MCA 25 - MCA 25_28 MI - Manual (Page 5)

1 Introduction
1.1 Symbols used
In these instructions, various danger levels are employed to draw the
user's attention to particular information. In so doing, we wish to
safeguard the user's safety, obviate hazards and guarantee correct
operation of the appliance.
DANGER
Risk of a dangerous situation causing serious physical
injury.
WARNING
Risk of a dangerous situation causing slight physical
injury.
CAUTION
Risk of material damage.
Signals important information.
¼ Signals a referral to other instructions or other pages in the
instructions.
1.2 Abbreviations
4 3CE : Collective conduit for sealed boiler
4 DHW : Domestic hot water
4 Interscenario switch : Home automation switch that can be used
to centralise and control several scenarios
4 Hi : Lower heating value LHV (Nett)
4 Hs : Higher heating value HHV (Gross)
4 IOBL : Carrier current home automation bus
4 PPS : Polypropylene hardly inflammable
4 PCU : Primary Control Unit - PCB for managing burner operation
4 PSU : Parameter Storage Unit - Parameter storage for PCBs
PCU and SU
4 SCU : Secondary Control Unit - control panel PCB
4 SU : Safety Unit - Safety PCB
4 3WV : 3-way valve
MCA 15 - MCA 25 MCA 25/28 MI 1. Introduction
23/08/2011 - 300024159-001-B 4