FASTECH KI - KIS
6
ENGLISH
7
4 - COMMISSIONING AND MAINTENANCE
4.1
Preparation for initial commissioning
Before turning on and testing the boiler for the first time, check that:
- the system gas and water valves are open
- the type of gas and the supply pressure comply with the boiler
specifications
- the vent valve cap is open
- the hydraulic circuit pressure, when cold, is between 1 and 1.5 bar
and the circuit is de-aerated
- preloading of the expansion tank is adequate (refer to the data table)
- the electrical connections have been made correctly
-
the flue gas discharge ducts and the combustion air suction vents
have been fitted correctly
- the pump can rotate freely: unscrew the inspection screw and use
a slotted screwdriver to check that the rotor shaft moves freely.
Before loosening or removing the pump cap, protect the electric
devices underneath from any leaks.
FASTECH KI
FASTECH KIS
4.2
First start-up
To turn on the boiler:
- Connect the boiler to the mains
- Open the gas valve, to enable the gas supply
-
Adjust the room thermostat to the desired temperature (~20°C)
Turn the function selector to the required setting:
WINTER:
when the function selector is set to within this range, the
boiler supplies domestic hot water and heating. In the event of a heating
request, the boiler turns on.
The digital display indicates the heating water temperature. In the
event of a DHW request, the boiler turns on. The display indicates
the temperature of the domestic hot water.
WINTER MODE
Heating water temperature adjustment
To adjust the temperature of the heating water, turn the function
selector within the adjustment range (clockwise to increase and anti-
clockwise to decrease).
HEATING WATER
TEMPERATURE
DOMESTIC HOT WATER
TEMPERATURE
SUMMER
: by turning the function selector to the Summer symbol
, the conventional DHW-only function is activated. In the event of
a DHW request, the boiler turns on. The digital display indicates the
domestic hot water temperature.
SUMMER MODE
DHW temperature adjustment
To adjust the domestic hot water temperature (bathrooms, showers,
kitchens, etc.), turn the dial with the symbol clockwise to increase
the value, or anti-clockwise to decrease (min. value 37 °C - max. value
60 °C). The boiler remains on standby until the burner ignites following
a heat request. The boiler operates until the controlled temperatures
are reached or the heat demand is met, after which it returns to standby
status. In the case of a temporary stop, the digital display shows the
code associated with the fault that has occurred.
DHW TEMPERATURE ADJUSTMENT
Heating Temperature Control function (C.T.R.)
When the heating water temperature selector is positioned in the sector
indicated in the figure, the C.T.R. self-control function is activated.
According to the temperature set on the room thermostat and the time
taken to reach this value, the boiler automatically varies the heating
water temperature, reducing operating time and enabling increased
comfort and energy savings.
