Function Block: D.h.w; Operating Lines; Assignment Of D.h.w; Program For The Circulating Pump - Siemens RVP360 Basic Documentation

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Siemens
Building Technologies
14

Function block: D.h.w.

This function block is used for making all d.h.w.-related settings.
14.1

Operating lines

Line Function, parameter
121

Assignment of d.h.w.

123 Release of d.h.w. heating
124 D.h.w. priority
126 D.h.w. storage tank sensor/thermostat
127 Boost d.h.w. charging temperature
128 Switching differential d.h.w.
129 Maximum time d.h.w. charging
130 Setpoint legionella function
131 Forced charging
14.2 Assignment of d.h.w.
Operating line 121 is used to select the heating circuits for which d.h.w. is heated,
that is, the heating circuits that draw their water from the same source.
Op. line 121 Comments
0 D.h.w. heating only for heating circuit of own controller
1 D.h.w. is only provided for the heating circuits of the controllers
with the same segment number connected to the data bus (LPB)
2 D.h.w. is provided for all heating circuits of the controllers connect-
ed to the data bus (LPB).
The setting is required in connection with operating lines 141 (program for the cir-
culating pump) and 123 (release of d.h.w. heating).

14.3 Program for the circulating pump

Refer to chapter 15.2.4 "Circulating pump".

14.4 Frost protection for d.h.w.

Frost protection for the controller's d.h.w storage tank is ensured by sensor B31
and – if installed – sensor B32.
For the storage tank, a minimum switch-on temperature of 5 °C always applies. If
the temperature acquired by sensor B31 or B32 falls below 5 °C, charging is im-
mediately started (independent of other settings), generating a heat request to the
precontroller. The switch-off temperature is 5 °C plus the switching differential (set
on operating line 128).
When using thermostats, frost protection for the d.h.w. storage tank is not
provided.
Basic Documentation RVP360
14 Function block: D.h.w.
Factory setting
Unit
(range)
0 (0...2)
2 (0...2)
0 (0...4)
0 (0...5)
10 (0...50) K
8 (1...20) K
60 (--- / 5...250) min
--- (--- / 20...100) °C
0 (0 / 1)
CE1P2546en
Heating
circuit
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2017-07-24