Zeus Maior 24 Instructions
An annual maintenance of the boiler and heating system is recommended. This ensures that the optimal
safety, performance and operation characteristics of the boiler remain unchanged over time.
Warnings
Never expose the wall-mounted boiler to direct vapours from a cooking surface. Use of the boiler by un-
skilled persons or children is strictly prohibited.
Never touch the flue extraction terminal (if fitted) due to the risk of burning caused by high temperatures;
For safety purposes, check that the concentric air intake/flue exhaust terminal (if fitted), is not blocked. If
temporary shutdown of the boiler is required, proceed as follows:
a) drain the heating system if anti-freeze is not used;
b) shut off all electrical, water and gas supplies.
When building or renovation work is carried out in the vicinity of the flue outlet, switch off the boiler and on
completion of work ensure that a qualified technician checks the safety of the installation. Never clean the
appliance or connected parts with flammable substances. Never leave containers or flammable substances
in the same environment as the appliance.
Electrical Safety
- never touch the appliance with wet hands or other parts of the body and never touch when barefoot.
- never pull electrical cables or leave the appliance exposed to atmospheric agents (rain, sunlight, etc.);
- the appliance power supply cable must never be replaced by the user;
- in the event of damage to the cable, switch off the appliance and contact a qualified service technician.
- in the event of prolonged periods when the boiler is not in use, turn off the main power switch.
Operation and Maintenance Instructions
Using the Boiler
Before lighting, make sure that the system is full of water and that the manometer (8) indicates a pressure
of 1 - 1.2 bar.
-Open the gas valve on the gas supply to the boiler.
-Turn main switch (5) to Hot Water or Hot Water/Heating.
N.B.:
Once the main switch (5) is turned to the central Heating temperature setting (1) is not active,
and the domestic water temperature is controlled by selector (2). With the switch set to the central
heating temperature is set using selector (1) while selector (2) is used for the domestic hot water. Turn the
selectors clockwise to raise the temperature, anticlockwise to lower it. Boiler operation is now automatic.
Faults
Overheat lockout
- Red indicator lamp (3)on. If during operation a fault causes the temperature to exceed
100°C.the boiler enters this condition. Turn the main switch (5) temporarily to the Reset position. If this con-
dition occurs repeatedly, contact a qualified technician for assistance.
Flue blockage
- Red indicator lamp (3) on. If there is a problem with the boiler flue then the boiler enters
‘flue blockage’ mode. Turn the main switch (5) temporarily to the Reset position. If this condition occurs
repeatedly, contact a qualified technician for assistance.
Ignition lockout
- Red indicator lamp (6) on. Each time heating or hot water production is required the
boiler lights automatically. If the boiler does not light within 10 seconds, the boiler goes to “ignition lock-
out” (indicator lamp 6 on). Turn the main switch (5) temporarily to the Reset position. This condition may
occur repeatedly if the gas supply is interrupted or if the boiler has been out of service for some time. If this
condition occurs repeatedly, contact a qualified technician for assistance.
Boiler shutdown.
Turn off the main switch (5) by turning it to “0” (yellow indicator lamp 4 off) and close the
gas supply valve upstream of the appliance. Never leave the boiler switched on if left unused for prolonged
periods.
1 Heating Temp Selector
2 Domestic Hot Water Selector
3 Boiler over temperature and flue
block red indicator
4 Power on green indicator lamp
5 0-Domestic—Domestic and Heat-
ing– Reset switch
6 Ignition lockout red indicator lamp
7 Boiler Thermometer
8 Boiler Manometer
