Immergas VICTRIX ZEUS SUPERIOR, Instruction Booklet

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INS
TALLER
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MAINTEN
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CE TECHNI
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2.8 BOILER SHUTDOWN
Switch the boiler off by pressing the “ ” but-
ton, disconnect the onmipolar switch outside of
the boiler and close the gas cock upstream of the
appliance. Never leave the boiler switched on if
left unused for prolonged periods.
2.9 RESTORING CENTRAL HEATING
SYSTEM PRESSURE.
Periodically check the system water pressure.
The boiler pressure gauge should read a pressure
between 1 and 1.2 bar.
If the pressure falls below 1 bar (with the circuit
cold) restore normal pressure via the valve located
at the bottom of the boiler (Fig. 2-8).
N.B.: close the cock after the operation.
If pressure values reach around 3 bar the safety
valve may be activated.
In this case, remove water from an air vent valve
of a radiator until reaching pressure of 1 bar, or
ask for assistance from professionally qualified
personnel.
In the event of frequent pressure drops, contact
qualified staff for assistance to eliminate the pos-
sible system leakage.
2.10 SYSTEM DRAINAGE.
To drain the boiler, use the special draining
valve (Fig. 2-8).
Before draining, ensure that the filling cock is
closed.
2.11 STORAGE TANK DRAINING.
To drain the storage tank, use the special draining
valve (Fig. 2-8).
N.B.:
before performing this operation, close
the boiler cold water inlet valve and open any
DHW system hot water valve in order to air
into the cylinder.
2.12 ANTI-FREEZE PROTECTION.
The “Victrix Zeus Superior ErP” series boiler has
an anti-freeze function that switches the burner
on automatically when the temperature falls
below 4°C (standard protection to minimum
temperature of -5°C). All information relative to
the anti-freeze protection is stated in Par. 1.3. In
order to guarantee the integrity of the appliance
and the domestic hot water heating system in
zones where the temperature falls below zero,
we recommend the central heating system is
protected using anti-freeze liquid and installation
of the Immergas Anti-freeze Kit in the boiler. In
the case of prolonged inactivity (second case),
we also recommend that:
- disconnect the electric power supply;
- fully drain the central heating circuit (if not
protected by anti-freeze liquid), the boiler do-
mestic hot water circuit and the condensation
trap. In systems that are drained frequently,
filling must be carried out with suitably treated
water to eliminate hardness that can cause lime-
scale.
In case of operation in central heating and empty
domestic hot water circuit mode, it is recom-
mended to set the temperature of the DHW (SET
SAN) at minimum.
Key:
1 - System filling valve
2 - System draining valve
3 - Gas cock
4 - Cold water inlet cock
5 - Storage tank unit draining valve
1st Level Button 2nd Level Button Description
M9
D


C
P91
D


C
Displays the current temperature of the low temperature zone number 2
P92
D


C
Displays the current temperature of the low temperature zone number 3
P93
D


C
Defines the flow temperature of the zone number 2 at low temperature.
With external probe (Optional) fitted the flow temperature may be corrected with respect to the
operation curve set by the external probe. See OFFSET on external probe graph (Fig. 1-6) changing
temperature from -15°C to +15°C.
P94
D
x
select

C
Defines the flow temperature of the zone number 3 at low temperature.
With external probe (Optional) fitted the flow temperature may be corrected with respect to the
operation curve set by the external probe. See OFFSET on external probe graph (Fig. 1-6) changing
temperature from -15°C to +15°C.
Zone Menu (optional) “M9”.
The “M9” zone
menu is only activated if the board detects con-
nection to an additional zone board (optional).
This menu contains the temperature settings of
additional zones.
2.13 CASE CLEANING.
Use damp cloths and neutral detergent to clean
the boiler casing. Never use abrasive or powder
detergents.
2.14 DECOMMISSIONING.
In the event of permanent shutdown of the boiler,
contact professional staff for the procedures and
ensure that the electrical, water and gas supply
lines are shut off and disconnected.