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15. Service settings
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15.2 Boiler
Boiler settings
Boiler settings
· Maximum CH setpoint temp.
Maximum temperature setpoint for the boiler and the heating circuit
· Operation mode
•
•
· Select thermostat
Disabled - disables room thermostat influence on the boiler operation,
•
•
· Boiler hysteresis
If the boiler temperature decreases below the boiler temperature setpoint by hysteresis, the burner starts automatically.
· Disabled by thermostat
•
•
15.3 CH and DHW
CH and DHW settings
CH pump start temperature
Parameter determines temperature, at which CH boiler pump is activated. It protects the boiler against condensation due to the
cooling with cold water returning from the system. Note: deactivating the boiler pump does not guarantee boiler protection against
condensation and corrosion. Use additional protection device, e.g. four-way valve or three-way thermostatic valve.
CH pump idle time during
Available with DHW sensor installed. Prolonged DHW storage tank charging with DHW priority function enabled may lead to exces-
DHW charging
sive CH system cooling, since CH pump is disabled. CH pump idle time during DHW charging prevents it by periodical activation of CH
pump during DHW storage tank charging. CH pump is activated after the idle time elapses for a programmed time of 30 seconds.
CH pump idle time by
If the temperature in a heated room is reached (room thermostat tripped), CH pump is stopped for CH pump idle time by thermostat
thermostat
and is activated for CH operation time from thermostat.
Note: for CH pump to be stopped by the room thermostat, the following conditions must be met: Select boiler room thermostat ≠
CH operation time by
disabled and disabled by thermostat = YES.
thermostat
Min. DHW temp.
Available with DHW sensor installed. This parameter does not allow users to set DHW temperature setpoint below a specified
minimum value.
Max. DHW temp
Available with DHW sensor installed. This parameter determines a maximum temperature DHW storage tank is heated to when
removing the excessive heat from the boiler in the event of alarm. It is a very important parameter, and setting the value too high
will result in a risk of scalding. Setting the value too low will result in no heat being transferred to DHW storage tank in case of boiler
overheating. Allow for a possible controller failure when designing the domestic hot water system. Due to the controller failure,
water in domestic hot water system may heat to a hazardous temperature with a risk of scalding. Use additional thermostatic valves
as a mean of protection.
Boiler temperature increase by
This parameter determines by how many degrees the boiler temperature setpoint will be increased to charge DHW storage tank,
DHW and mixing valve
buffer tank and mixing valve circuit. The temperature is increased as required. If the boiler temperature setpoint is high enough, the
controller will not change it due to the need to charge the DHW storage tank, buffer tank or mixing valve circuit. Boiler temperature
setpoint increase during DHW storage tank charging is indicated by "C" in the main display screen.
Extend DHW time
Available with DHW sensor installed. The boiler may overheat after charging DHW storage tank with DHW pump disabled. It takes
place, when DHW temperature setpoint is higher than the boiler temperature setpoint.
This applies to DHW pump operation in SUMMER mode, when CH pump is disabled. DHW pump operation time may be extended
with Extend DHW time parameter to cool the boiler.
Circulation pump idle time
Idle time between circulation pump operation cycles is defined by Circulation pump idle time parameter value (recommended
setting 15- 40 min minutes). Circulation pump operates in cycles for the circulation time duration (recommended setting is 60 to
Circulation pump operation
120 seconds).
time
Leader in pellet boilers
Continuous - boiler maintain temperature at setpoint
Automatic - boiler turns off upon warming the heating equipment, adapting the temperature setpoint of 7°C
If further heating is needed, the boiler will turn on.
Universal - enables NO/NC room thermostat connected to terminals 42-43; use thermostats with hysteresis below 1K,
ecoSTER - available with the room temperature controller installed, thermostat status signal is sent to the room temperature
controller.
NO - CH boiler pump does not deactivate upon activation of room thermostat,
YES - CH boiler pump does deactivate upon activation of room thermostat.
ecoMAX860P3-S – Simple Controller User Manual – EN 12.17
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