System Antifreeze Protection; Temporary Or Short-Term Shut-Down - Riello Steel Pro Power 114-2 P Installation, Technical Assistance Service And System Management Manual

COMMISSIONING AND MAINTENANCE
Versions 180-3 P/V ÷ 540-4 P/V
CHECKING THE CALIBRATION
Select the "Max. power" value, wait until speed stabilises and
check that CO
2 correspond to required ones.
After the checks:
− select "OFF" with the ▲ / ▼ keys and press ● to confirm.
− remove the analyzer probe and carefully screw the flue
probe back (1)
− place back the front panel and lock the locking screw.
System Test
" "
Test State
" "
Fan Speed
" "
Ionisation
" "
3.6

System antifreeze protection

The anti-freeze protection function protects the system against
freezing.
The flow and return sensors of each individual thermal element
CO +
CO +
2
2
are monitored to generate an antifreeze protection request in
3
2
the following ways:
− When one of the sensors falls below 10°C, the CH pump
and the module pump start up.
− When one of the sensors falls below 5°C, the burner is
started.
− When all sensors measure a value above 15°C, the anti-
freeze protection request is deactivated.
− When the primary probe detects a temperature lower
than parameter 155 (by default set to 15°C), the CH pumps
and the general cascade pump are activated. When the
temperature of the primary probe reaches the value de-
fined by the parameter 155 plus 5 degrees, the request
1
ceases and the cascade returns to stand-by mode.
− When the antifreeze protection is switched off, the pumps
continue to operate for the post-circulation period.
If the external probe is present, an additional antifreeze pro-
tection is activated. If the external probe detects a temperature
lower than that set in parameter 186 (default value=3), then the
pump of the first element and the pump of the CH circuit are
started.
In case of indoor installation and if no antifreeze protection
(linked to the external probe) is requested, it is sufficient to set
the parameter 186 at the lowest possible value (-30).
3.7

Temporary or short-term shut-down

In the event of temporary or short-term shut-down (e.g. due to
holidays), proceed as follows:
− Press the MENU key and select with keys ▲ / ▼ "Time
schedule", confirm with key ●.
− Select with keys ▲ / ▼ "Holiday Schedule" and confirm
with key ●.
Off
" "
0 rpm
Clock Program
" "
0.0 μA
"
Program Group
"
Burn hours till service
"
Reset Service Reminder
"
Holiday Settings
"
80
"
"
"
"
"