OPTIMAX HE PLUS C
13
EN
cod. 3540I885 - 08/2012 (Rev. 00)
Accessing electrical terminal block
The electrical connections terminal block can be accessed after removing the casing The layout of the terminals for the
various connections is given in the wiring diagram in fig. 38.
fig. 18 - Electrical terminal block
Room thermostat (optional)
B
CAUTION: THE ROOM THERMOSTAT MUST HAVE VOLTAGE FREE SWITCH CONTACTS.
CONNECTING 240V TO THE SWITCH TERMINALS OF THE BOILER (5-6) WILL IRREPARABLY DAMAGE
THE BOILER PCB.
When connecting either a room thermostat or remote timer control, remove the jumper on the terminal block
(5-6) and connect the volt free switch connections across these terminals. If a remote timer control and room
thermostat are required then these must be connected in series.
2.6 Flue system
This unit is a "C type" with
sealed chamber
and forced draught, with air inlet and flue exhaust to be connected to one
of the following flue systems. Before installation, with the aid of the tables and calculation methods given, check that the
pipes of the fume system do not exceed the maximum permissible lengths. The current standards and local regulations
must be observed.
B
Only a Ferroli flue system (with respective accessories) must be used with this unit, as required by BS 5440
and CE standards.
138 72
FLOWMETER
ON/OFF
SWITCH
139
1 2 3 4 5 6
