Draining - Ariston ecoCOMBI 27 MFFI Installation And Servicing Instructions

3.9. C
OMBUSTION
3.10 D
RAINING
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pump turns on (heating system circulation). If the temperature goes below 2°C, the
boiler turns on at the minimum power and remains on until the return temperature
is over 10°C.
- Outdoor sensor installed: the pump turns on if the external temperature goes below
-3°C, it turns off when the external temperatures raises above -1°C.
- Continuous operation of the pump: select by means of jumper 4 (see paragraph
2.11).
N
OTE
The anti-frost device activates only when (with the boiler operating correctly):
- the system pressure is correct;
- the boiler is electrically powered;
- there is a supply of gas.
A -
NTI SCALE
When producing domestic hot water, the burner shuts off whenever the output
temperature of the hot water exceeds 62°C or the flow temperature of the primary
circuit exceeds 72°C. It will not turn on if the temperature of the primary circuit is
greater than 72°C.
A The boiler is designed to allow for easy analysis of the products of combustion.
NALYSIS
Using the special traps, it is possible to detect the temperature of the burnt gas, the
combustion air, the concentrations of O
To access these traps, unscrew the front screw and remove the metal plate and
relevant seal.
The best test conditions, with the maximum heating power, are achieved when the
FLUE SWEEP FUNCTION is enabled (press the RESET KEY "H" for 5 seconds).
The boiler will return to normal operating conditions automatically after 5 minutes,
or if you press the reset key "H". When you have finished, reposition the metal
plate correctly and make sure the seal fits perfectly.
The draining of the heating system must be carried out as follows:
- Turn off the boiler and the bipolar switch;
- Loosen the automatic air release valve;
- Open the system's discharge valve and gather the water that comes out in a container;
- Empty out from the lowest points of the system (where provided).
If the system is to be left active in areas where the room temperature may go below 0°C
during winter, it is recommended that anti-freeze liquid be added to the water in the heating
system in order to avoid the need for repeated draining.
Draining the domestic hot water system
Every time that there is a danger of freezing, the domestic hot water system must be
drained as follows:
- close the water mains stop-cock;
- open all the hot and cold water outlets;
- empty out from the lowest points (where provided).
: In all cases, the circulation takes place in the heating system.
D .
EVICE
, CO , etc.
2 2
FU008A