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28 Doc890/3456CV02B
BME (option)
This is a weather-compensated regulator with the following possibilities:
- Three on/off periods per day with three different tempera tures
- Night-time temperature reduction
- Domestic hot water priority with time programming
- Anti-legionella provision
- Optimum start
- Room-temperature sensor (can be switched off)
- Two-wire communication bus connection
- Multi-language display
- External control
E6 (option)
This is a regulator with which two secondary groups can be weather-dependently controlled. In
addition, domestic hot water temperature can also be regulated. All the settings can be adjusted
independently for each group. This E6 regulator can be further extended with an optimizing con-
troller for each group (BM). The boiler is then directly weather-dependently con trolled.
KKM (option)
This is a boiler cascade manager permitting up to eight boilers to be switched in cascade. The
KKM also has the same possi bilities as the E6 option.
Connection terminals
The operation of the appliance can be infl uenced by externally generated signals applied to the
appropriate terminals.
Terminal Description
L1-L2-L3 N-E
Boiler power supply; must be fused at 16/20 A.
8 - 9 Domestic hot water primary pump control. This out put provides a voltage (230 V)
when the boiler is operational as a result of a domestic hot water heat ing de-
mand.
10 - 11 Boiler enable (230 V). When these terminals are connected the DHW primary
pump will be started and the boiler will be enabled. When there is an open circuit
between them the boiler will be shut down. The pump will also stop after the set
run on time. These terminals can be used, among other things, for setting the
boilers to standby during the summer months whilst continuing to provide domes-
tic hot water priority.
12 -13 Bedrijfssignaal (230 V, 50 Hz, 1 A, N.O.). Het be drijfssignaal valt af indien een
storing vaker dan 2 maal binnen 6 minuten voorkomt (storingscode wordt afge-
beeld in het display met daarboven een "3") of bij een storing die langer dan 6
minuten actief is. Dit signaal is reeds verder voorbedraad met potentiaalvrije
contacten voor externe voeding, OK en alarm (93, 94 en 95).
14 - 15 Control voltage for an external gas valve. This output begins to provide 230 V
before the boiler starts up; the voltage ceases after the boiler shuts down. This
output can be used to open hydraulic valves or to operate boiler room ventila-
tion.
16 - 17 Calorifi er thermostat (230- V). When these terminals are interconnected the
boiler will try to provide the set fl ow temperature programmed for the boiler. This
input only functions if terminals 34 - 35 are inter connected.
18 - 19 Interlock input (230 V). If the connection between these terminals is broken, the
boiler will be shut down and will then wait until the connection is made again.
20 - 21 Lockout input (230 V). If the connection between these terminals is broken the
boiler will enter the fault mode. Reinstate the connection and press the reset
push-button.
30 - 31 External sensor*. After a suitable sensor has been connected it will be automati-
cally recognised when the power supply is switched on.
32 - 33 Low velocity header sensor*. This sensor can mea-sure the temperature of a low
velocity header. This is used for the control of a speed controlled pump.
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