User`s manual

INSTALLER
20
TECHNICIAN
USER
20
Room thermostat: the boiler is designed for
application of a Room Thermostat.
The Room Thermostat must have exclusively class II
electrical isolation (standard EN 60335-1).
Connect the Room Thermostat to terminals 34-35
and remove jumper P1.
3
BOILER START-UP
PRELIMINARY CHECK
To start up the boiler, proceed as follows:
- ensure that the declaration of conformity of
installation is supplied with the appliance;
- check gas supply circuit tightness with the 0n-Off
valves closed and subsequently open with gas val-
ve closed; no gas transfer must be read on the
meter for 10 minutes
- ensure that the type of gas used corresponds to
boiler settings;
- ensure connection to a 230V-50Hz power mains,
correct L-N polarity and the earthing connection;
- switch on the boiler and ensure correct ignition;
- make sure the gas maximum, medium and
minimum flow-rate and pressure values correspond
to those given in the handbook on page 20.
- ensure activation of the safety device in the event
of gas supply failure, as well as the relative
activation time;
- check activation of the main circuit-breaker switch
upstream of the boiler and on the unit;
- check that the intake and/or exhaust terminals are
not blocked;
- ensure activation of the safety pressure switch in
the event of air supply failure;
- ensure activation of all regulation devices;
- seal the gas flow rate regulation devices (if settings
are modified);
- ensure production of hot domestic water;
- ensure tightness of water circuits.
- Check adequate ventilation and/or aeration of the
installation room.
If any checks/inspection give negative results, do not
start the boiler.
3.1 Zeus Maior wiring diagram.
HEATING TEMP
CONTROL
DOMESTIC TEMP
CONTROL
CONTROL CARD
PRIMARY
SECONDARY
MAX HEATING
POWER
MIN HEATING
POWER
N.B. The Black-edged connectors
should be fitted on the
control unit
Blue
Brown
Yellow/Green
IGNITION
DETECTOR
CONTROL
UNIT
Power supply
230 V
50 Hz
Blue
B
row
n
Black
Black
Black
Black
White
White
Red
Red
B
row
n
Black
White
White
Blue
Red
Brow
n
Black
Red
Blue
White
Blue
B
row
n
Black
Black
Violet
Violet
O
range
R
ed
Blue
Brow
n
Black
O
rang
e
Red
Key:
E1-E2 - Ignition spark plugs
E3 - Detection spark plug
IG - Main switch
LD1 - Safety LEDs
LD2 - Failed lighting LED
LD3 - Mains presence LED
MOD - Modulator coil
MP - Circulator
MV - Fan
NR - Heating NTC sensor
NS - Domestic circuit NTC sensor
P1 - Ambient thermostat jumper
SP - Pump flow microswitch
SV - Air pressure microswitch
TA - Ambient thermostat On/Off
(optional)
TS - Safety thermostat
VD - Three-way diverter switch
V/G - Gas valve