
82
ES
CZ
SI
HU
RO
IE
PL
TECHNICIAN - INITIAL BOILER CHECK
Yearly appliance check and maintenance.
The following checks and maintenance should be performed at least once a
year.
- Clean the flue side of the heat exchanger.
- Clean the main burner.
- Make a visual inspection of the flue extraction hood for wear or corrosion.
- Ensure correct ignition and operation.
- Ensure correct settings of the burner in domestic water and heating phases.
- Verify correct operation and adjustments of the appliance, in particular:
- activation of the electrical main switch on the boiler;
- activation of the system control thermostat;
- activation of the domestic water control thermostat.
- Ensure sealing efficiency of the gas intake circuit; insert a “U” or digital type
pressure gauge in the pressure socket upstream of the gas valve and subse-
quently closing the boiler shutoff valve (cock) and closing the gas valve, no
pressure variation must occur in the next five minutes on the gauge.
- Ensure activation of the device for protection against the ionisation flame
control gas; activation time must be less than ten seconds
- Visually inspect to check for leakage of water or oxidation of relative couplin-
gs.
- Check visually that the water safety valve outlets are not blocked.
- Check that the charge of the expansion vessel after discharging system pressure
to the zero setting (check via boiler pressure gauge), is at 1,0 bar.
- Check that the system static pressure (in cold conditions and after system
recharging via the filling valve ) is between 1 and 1.2 bar.
- Check visually that the safety and control devices have not been tampered
with and/or shorted, in particular:
- temperature safety thermostat;
- air pressure switch.
- Check the integrity of boiler Magnesium Anode.
- Ensure correct maintenance and condition of the electrical installation with
particular reference to:
- electrical cables must be inside the channels;
- no traces of black marking or burns.
Zeus Mini wiring diagram.
Ambient thermostat and timer: the boiler is fitted for the Ambient Thermostat
(TA) and timer (OP). If there is only one of these, connect to terminals 6 - 9
removing jumper P1. Whereas, if there are both then connect TA to terminals
8 and 9 and OP to terminals 6 and 7 after removing P1.
Key:
E1-E2 - Ignition spark plugs
E3 - Detection spark plug
JP1 - Gas selector
JP3 - Heating timer selector
LD1 - Flame presence led
LD2 - Fault indicator led
MOD - Modulator coil
MP - Circulator
MV - Fan
NM - Delivery NTC sensor
NS - Domestic circuit NTC sensor
OP - Timer (on request)
P1 - Ambient thermostat jumper
SV - Air pressure microswitch
TA - Ambient thermostat On/Off (optional)
TS - Safety thermostat
VD - Motor-operated 3-way diverter switch
V/G - Gas valve
Black
Black
Black
Black
Black
Red
Red
Red
Brown
Brown
Brown
Brown
Brown
White
White
Primary
Secondary
Gray
Gray
Blue
Blue
Blue
White
Orange
Orange
Violet
Yello
w/Green
Flame LED
Fault indicator LED
Domestic water set
Slow ignition
Heating set
Heating capacity