BRÖTJE HKM Instructions D'installation page 9

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Fig. 4 Heating circuit module HKM (special accessory)
Regulator
– hot water
Function description
general information
Temperature setpoint value
adjustment
Operation without outdoor
temperature sensor
Operation with outdoor
temperature sensor
Heating curves slope
Automatic summer/winter
changeover
Heating circuit module HKM
With the installation of the heating circuit module HKM and the
connection of the clock timer EMS or DSU to power supply, a fully
operational control system is available.
With outdoor temperature sensors, a weather-controlled mode for heating
system operation is available.
Boiler temperature setpoint value on the heating system regulator
(20°C - TKS standard 75°C)
Hot-water temperature setpoint value on the hot-water regulator (10°C - 65°C)
Room temperature setpoint value on the heating system regulator (10°C - 30°C)
Hot-water temperature setpoint value on the hot-water regulator (10°C - 65°C)
For adjustment details, see the boiler installation instructions.
The button SW automatic changeover is used to switch over manually
between summer and winter and automatic mode.
• Manual summer:
Auto-LED OFF (upper LED); winter LED OFF (lower LED);
heating circuit blocked; automatic changeover blocked
• Manual winter:
Auto-LED OFF (upper LED); winter LED ON (lower LED);
heating circuit released; automatic changeover blocked
• Automatic mode:
Auto-LED ON (upper LED); lower LED indicates result of the automatic function
(winter ¡ LED ON; summer ¡ LED OFF; automatic changeover active.
The time switching program for the normal heating mode or reduced mode
must be adjusted on the clock timer EMS or on the clock timer DSU. In
case of normal heating mode ON (contact closed), the heating system is
regulated according to the room temperature setpoint value pre-set on the
regulator. In case of reduced mode (contact open), the heating system is
regulated according to a room temperature setpoint value that is 10 K lower.
HKM
Installation location for clock
timer EMS
Regulator – heating system
Indication – S/W automatic
changeover
Button
S/W (summer/winter
Auto
automatic changeover)
Indication – S/W automatic
changeover
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