MHG Heating ProCon HT 150, Руководство пользователя

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ProCon HT 150 / HT 225
1. Installation
• Pump overrun for domestic water pump
In order to use the residual heat of the boiler after it is charged with
domestic water, the boiler control carries out a pump overrun. The
pump overrun is carried out depending on the boiler temperature
until it falls below an adjustable temperature or for up to a maximum
of one minute.
• Demand-dependent hot water regulation
In the cascade controller is a timing program for domestic water
charging and it can be used to adjust freely the charging times of
the storage tank.
• Weather-dependent control
The cascade controller is equipped with a weather-dependent
control. In the weather dependent control, the flow temperature is
regulated depending on the outdoor temperature and the specific
values of the heating system.
To increase the comfort in a living room and to save energy, the
rapid heat-up,/ rapid cool-off function has been integrated into the
cascade controller. This function ensures fast heating up of the
room air during switch over from cool—off to day operation. During
transition from day to cool-off operation, this function ensures that
the system is turned off quickly.
• Switching from day to cool-off operation:
To calculate the flow temperature, the room temperature is taken into consideration if
the room thermostat is on and the cool-off temperature is used if the room thermostat
is off.
• Switching from winter to summer operation:
RVA 47 has an automatic summer / winter switchover control.
The desired temperature can be set or deactivated with
parameter 16.
If the rated outdoor temperature is more than 1°C above the set
switchover temperature, the system will switch to summer
operation.
If the outdoor temperature reduces by 1°C below the set
switchover temperature, the system will go into winter operation.
• Domestic water operation
The domestic water operation can be switched on or off
irrespective of the operation status of the cascade controller.
•
Safety temperature limiter STL (boiler)
The boiler control has a corresponding logic that uses the flow and
return sensors to prevent overheating of the boiler. If the given
temperature gap is exceeded, the capacity of the boiler will reduce.
Should the switch off temperature be reached, the burner will
switch off and the fan and pump overrun will be initiated. A
corresponding error message appears on the display. If the boiler
temperature falls below the switch-off temperature, the
permanent safety switch-off may be released due to pressure on
the unlocking push button.
•
Safety temperature monitors STM (boiler)
If the programmed switch-off temperature of the STM is exceeded,
the fuel supply will be switched off and the fan and pump
overrun will be initiated. A corresponding error message
appears on the display (see Chap 6.1 titled Error Messages). The
system will restart automatically if the temperature reduces below
the switch-off point.
•
Safety temperature limiter STL (Flue gas)
If the programmed STL switch-off temperature for the flue gas
circuit is exceeded, the boiler capacity will reduce. Should the flue
gas temperature not reduce sufficiently afterwards, the fuel supply
with be shut off and the fan and pump overrun will be initiated. A
corresponding and clear error message will be indicated the
display (see
Chap 6.1 Error messages). If the STL temperature falls below the
switch-off temperature, the permanent safety switch-off may be
released due to pressure on the unlocking push button.
•
Sensor monitoring
The boiler control recognizes and monitors the connected sensors.
In the event of a error, a error message will be released
•
Boiler flow/return sensors
These sensors must always be present. They are being constantly
monitored. If there is a sign of irregularity, the burner will switch off
and a corresponding error message appears.
•
Outdoor sensor
When switching on the mains voltage, an automatic self-recognition of
the outdoor sensors is carried out. The sensor is then monitored
for short circuit and interruption. If there is no error when
switching on the sensor, then all the functions associated with it
stops. A corresponding error message will appear on the
display (10).
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