57
Service setting manual
ENG
DOMESTIC HOT WATER CIRCULATION
The d. h. w. circulation pump is operating according to the time program for the d. h. w.
circulation - parameter P4.7. The pump is operating with running and standby intervals
which are set with parameters P4.8 and P4.9.
D. h. w. circulation on output R5
With parameter setting S4.1=5 the R5 output can be programmed for the activation of d. h.
w. circulation with temperature sensor. This option is available only by hydraulic schemes,
which do not have d. h. w. circulation implemented by default.
D. h. w. circulation with the use of sensor
If T1 or T8 sensor is free, it can be used to activate the d. h. w. circulation with parameter
S1.4=6 (for sensor T1) or S1.5=8 (for sensor T8).
The sensor needs to be installed on the exit pipe from the d. h. w. storage tank (hot pipe).
Whenever an immediate temperature rise for at least 5 K is detected, the d. h. w. circula-
tion pump is switched on for the time set with parameter P4.8.
D. h. w. circulation with flow switch
If T1 or T8 sensor is free, it can be used to activate the d. h. w. circulation with a flow
switch - parameter S1.4=6 (for sensor T1) or S1.5=8 (for sensor T8).
The switch needs to be installed on the exit pipe from the d. h. w. storage tank (hot pipe).
If flow switch detects flow, the d. h. w. circulation pump is switched on for the time set with
parameter P4.8.
REMOTE HEATING ACTIVATION
Setting the parameter S1.6=1 enables a remote activation of room heating and d. h. w.
warming with telephone controlled switch Telewarm G1-D or Telewarm G44 or any other
device with a potential-free control switch. Room heating according to the requested day
time temperature and d. h. w. warming are activated if a short circuit is detected on input
T1 or T6.
In a BUS connection of more controllers the request for remote activation on master con-
troller is accepted also on slave controllers if defined with parameter S1.8.
OPERATION OF HEATING SYSTEMS WITH TWO HEAT SOURCES
KMS-D and KMS-D+ controllers feature fully automatic operation of heating systems with
two heat sources, for example with solid and liquid fuel boiler. Systems can operate with or
without a heat accumulator. The hydraulic connection of the two heat sources can be paral-
lel or serial. In parallel connection only one heat source can operate at the time, in serial
connection both heat sources can operate simultaneously.
