Riello RESIDENCE HM Series Instructions For The User page 14

5.6 "DHW comfort" function
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>2 sec
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Function Scrolling message
COFF COMFORT OFF
CSTD COMFORT STANDARD
CSMT COMFORT SMART
CSTD (PREHEATING function)
Setting CSTD activates the boiler pre-heating function. This function
keeps the water in the domestic hot water exchanger hot, to reduce
standby times when a request is made. When the preheating function
is enabled, a scrolling message COMFORT STANDARD appears on the
display. To deactivate the preheating function, set COFF.
The function is not active when the boiler is OFF.
CSMT (TOUCH & GO function)
you want hot water immediately ready, it is possible to pre-
heat the domestic hot water just a few moments before taking it.
Set CSMT to activate the Touch&Go function. This function allows you,
by opening and closing the tap, to start the instantaneous pre-heating
that prepare the hot water only for that water take. When the Touch&-Go
function is enabled, a scrolling message COMFORT SMART appears
on the display.
CSUP (SMART preheating function)
When this function is active, the 3-way valve on DHW enables post-cir-
culation at the end of the heating request until one of the following con-
ditions is met:
- T (flow sensor - return) < 2 °C
- Return temperature > 65 °C.
5.7 Special DHW functions
modulation phase. These functions improve the performance of the boil-
er in particularly difficult operating conditions (e.g. particularly high inlet
water temperatures, very low flow rates, use in combination with solar
storage cylinders).
0 No special function active (default value)
1
- SERVICE)
In the event of a shut-down due to overheating in the DHW area
2 (with withdrawal in progress) the fan is kept at idle to reduce the
waiting time for restarting
3 Absolute DHW thermostats
4 Anti-slope smart DHW function
5 All four previous functions active
DHW DELAY function (1)
This function enables a delay, equal to the value set in the parameter
SMART FAN function (2)
When this function is active, the fan is kept at the minimum (MIN) and is
not disabled if the burner is switched off due to DHW overtemperature
(with the request still active).
ABSOLUTE THERMOSTATS function (3)
When this function is active, the DHW thermostats for burner ON/OFF
switch from the relative value to the absolute one.
ANTI-PENDULATION function (4)
When this function is active, the boiler automatically switches to ABSO-
LUTE THERMOSTATS mode if the burner is switched off due to DHW
overtemperature (with extraction in progress); when the burner is OFF,
the fan is kept at the minimum. The thermostats go back to being "COR-
RELATED" when extraction ends.
5.8 Screed heater function
For a low temperature system, the boiler has a "screed heater" function
that can be activated in the following way:
set the boiler to OFF by pressing the button
able in this operating state)
access technical parameters
firm; the display shows:
The screed heater function lasts 168 hours (7 days) during which, in the
zones configured as low temperature, a heating request is simulated with
an initial zone outlet of 20°C, then increased in line with the table
By accessing the INFO menu from the main screen of the interface, it
is possible to display the value of I001, relating to the number of hours
elapsed since the function was activated. Once activated, the function
takes priority, if the machine is shut down by disconnecting the power
supply, when it is restarted the function picks up from where it was
interrupted. The function can be interrupted before its end by switching
menu P4.
DAY
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declines all responsibility if the parameters are incorrectly set.
In the INFO menu, line I001 displays the number of hours elapsed
since the activation of the function.
5.9 C
After starting up, check that the boiler carries out the start-up procedures
and subsequent shut-down properly.
Check the domestic hot water operation by opening a hot water tap in
SUMMER mode or WINTER mode.
switch.
After a couple of minutes of continuous operation to be obtained by
turning the system's main switch to "on", setting the boiler mode se-
lector to Summer and by keeping open the domestic hot water device,
the binders and manufacturing waste evaporate; only subsequently it
will be possible to control combustion.
.
14
(function only avail-
P4
TIME TEMPERATURE
0 20°C
6 22°C
12 24°C
18 26°C
0 28°C
12 30°C
0 32°C
0 35°C
0 35°C
0 30°C
0 25°C
con-
below.