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Description
Setting
Effect
Description
Setting
Effect
Siemens Building Technologies
HVAC Products
4.179 Difference between the maximum storage
tank temperature (MSB) and the d.h.w.
storage tank safety temperature
The temperature differential is used to define the maximum storage tank temperature
(MSB). It refers to the d.h.w. storage tank safety temperature.
Setting range
1...50
If TBx exceeds the maximum storage tank temperature (MSB) by half the temperature
differential, priority 2 will be activated. If TBx falls below the maximum storage tank
temperature (MSB), priority 2 will be deactivated.
4.180 Hysteresis for the d.h.w. cooling function
with priority 1
The switch-off point for the d.h.w. storage tank cooling function with priority 1 can be
set via a hysteresis.
Setting range
1...20
When the maximum d.h.w. storage tank temperature (MSB) is reached, the d.h.w. stor-
age tank cooling functions with priority 1 will be activated, and deactivated via the hys-
teresis (also refer to graph on the previous page).
°C
MSB
TBx
on
off
Prio 1
523
Maximum d.h.w. storage tank charging temperature
MSB
Maximum d.h.w. storage tank temperature = operating line 500
TBx
Actual value of the storage tank temperature acquired by the sensor at the bottom of the tank
Basic Documentation RVP540 / RVP550
Description of the heating engineer settings
Unit
Factory setting
°C
5
Unit
Factory setting
°C
5
– operating line 539
EXP
207/348
CE1P2488en
18.10.2002
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