26
HK 200S
HK 200S-6
The flow-through step-controlled heating module
can be controlled by three potential-free relays in the
control module (3 linear or 7 binary steps). For step-
control of the heating module, you can also use two
relays (2 linear or 3 binary steps), therefore, the third
relay can serve for control of the submersible heater
in the hot water heater/buffer tank.
The steps occur in at least 1 minute intervals and are
switched off in at least 3 second intervals.
Step 1 is connected to clamp X2:2 at the auxiliary
relay card (AA7).
Step 2 is connected to clamp X2:4 at the auxiliary
relay card (AA7).
Step 3 or submersible heater in the hot water heater/
buffer tank are connected to clamp X2:6 at the auxil
-
iary relay card (AA7).
Settings of the flow-through step-controlled heating
module are entered in menu 4.9.3 and menu 5.1.12.
All auxiliary heaters can be blocked by connecting
the potential-free relay function to clamp X2 of the
program-controlled input (see SMO manual, Chapter
Electrical connections, section Optional Connections).
The emergency mode relay can serve to start the
heating module – for the purpose of temperature reg
-
ulation, connect the thermostat to the control circuit.
Make sure that the heating medium flows through the
auxiliary preheater.
If the relay is to be used for control voltage, connect
the power supply clamps X1:1 and X1:2, as well as
neutral conductor and control voltage of the auxiliary
preheater to clamps X1:0 (N) and X1:4 (L).
Step-controlled auxiliary preheater
Emergency mode relay output
Chapter 5 |
Electrical connections
HK 200S / HK 200S-6 is equipped with an isolation
valve (QN10) for hot water regulation.
Connect the isolation valve (QN10) to clamps X4:2
(N), X4:3 (control) and X4:4 (L) at motherboard (AA2),
as shows in the drawings.
Isolation valve (QN10)
HK 200S-6
HK 200S
HK 200S-6
HK 200S
HK 200S-6
HK 200S
HK 200S-6
HK 200S
EMER
GENC
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