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07.6
SYSTEM CONFIGURATIONS
Different hydraulic system configurations are possible with the MEC 21-18 kW boiler to allow for better operations based on the system
solution adopted in the installation phase.
This setting must be made by the installer or by the the specialised Technical Service Centre.
Factory settings are set in CONFIGURATION 1 in MENU 9 – TECHNIC SETTINGS, in the SETTINGS RUNNING page, accessible to
the user in the stove status page in MENU 8.
Available system configurations are numbered up to 7 and itemised below:
SCHEMA 1 - Heating –
Boiler configuration for heating only, without the possibility of
managing a zone system, an external Boiler for Domestic Hot Water
(hereinafter DHW) or Puffer for inert heat accumulation.
Summer operating mode cannot be set. Instead, the CRONO timer
function or STAND-BY temperature function can be set but not
simultaneously since incompatible.
The boiler, once the ROOM TEMPERATURE and BOILER WATER
are set, runs at full power until one of the two temperatures is
reached, then switching to ECONOMY. When the boiler is running
in ECONOMY mode to reach ROOM TEMPERATURE, the water
circulation pump turns off and only turns back on to run the discharge
function when the stove temperature is 80°C, to then stop at 75°C,
or at a new request by the room probe. It must be checked whether
there are hydraulic interceptions between the boiler and system that
could slow water flow and thus cause stove water overtemperature
alarms (Alarm AL19 THERMIC H20 SAFE).
For the room probe type, a thermostat or chronothermostat can be
used, connecting it to the back of the boiler at the green terminal
board, in the AMB PROBE connector, as illustrated.
To use the external thermostat set the THERMOSTAT as ROOM
PROBE in MENU 4 – SET PROBE. A remote temperature probe
can also be used as a room probe, always connecting it to the same
terminal board but in this case, the temperature probe secured on
the device back panel must be electrically disconnected from the
electronic board by the Installation technician or the specialised
Technical Service Center.
We recommend using the Jolly Mec thermostat module as the room
temperature probe, connecting it to the device back panel. With the
thermostat module, all appliance functions can be fully controlled
including setting operating times, selecting one of the 5 adjustable
heat profiles, adjusting working temperatures, being alerted when
pellets end, receiving fault signals and setting the STAND-BY
function from home.
Use the C N
C
N
O
connector to enable or
disable a parallel heat source based on pellet
boiler operations: with the pellet boiler OFF,
ALARM ON and ALARM MEMORY, a parallel
source can be enabled. In all other conditions,
boiler operations takes precedence.
NOTE
Содержание MEC 21-18 kW
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