Siemens LMS14 User Manual page 400

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Building Technologies Division
St tank transfer pump Q11
If the temperature level of the buffer storage tank is high enough, the DHW storage tank
can be charged by the buffer. This transfer can be made via storage tank transfer pump
Q11.
DHW mixing pump Q35
Separate pump for storage tank circulation during the time the Legionella function is
active.
DHW intern circ pump Q33
Charging pump with DHW storage tank using an external heat exchanger.
Heat request K27
Contact makes to inform an external heat source that a request for heat is pending.
Note!
In the case of compensation variants without room thermostat, a minimum request for
heat may be constantly present – and thus a request to the external heat source.
Note!
With cascade operation, this function can only be used via the master.
Refrigeration request K28
When cooling circuit 1 sends a refrigeration request, output Refrigeration request (K28)
is activated.
Heat circuit pump HC1 Q2
Pump heating circuit HC1 is activated.
Heat circuit pump HC2 Q6
Pump heating circuit HC2 is activated.
DHW ctrl elem Q3
Controlling element for DHW storage tank.
Instant WH ctrl elem Q34
Controlling element for instantaneous water heater.
Water refill K34
Function is not implemented.
2nd pump speed boiler Q27
Speed 2 of the boiler pump is activated.
Status output K35
The status output is activated:

When, from standby, a request from the controller to the burner control is active

When startup is initiated in the phase

In the operation phase

When a request from the controller is pending
When one of the above mentioned preconditions is fulfilled, the status output is set,
even if start prevention – caused by an open gas pressure switch – is demanded.
User Manual LMS14...
6 The settings in detail
CC1U7471en
28.01.2015