201/348
Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.169 Recharge control of the d.h.w. storage tank
•
Recharge control with 1 or 2 sensors
Depending on the selection made, recharge control of the d.h.w. storage tank can be
accomplished with 1 sensor (at the top) or 2 sensors (top and bottom).
Setting range
Unit
Factory setting
0...2 –
0
The settings have the following meaning:
0
Recharge control is accomplished with sensor B3 and a switching differential
(operating line 751
EXP
).
As soon as the temperature at sensor B3 falls below the required level, the
d.h.w. storage tank will be charged until the temperature at sensor B3 exceeds
the current d.h.w. setpoint by one switching differential.
1
Recharge control is accomplished with sensors B3 and B31
(start / stop behavior).
When the temperature at B3 (at the top) falls below the required level, the
buffer storage tank will be charged until the temperature at sensor B31 (at the
bottom) reaches the current d.h.w. setpoint.
2
Recharge control of normal d.h.w. storage tank charging is accomplished via
the temperature at sensor B3 and one switching differential (operating line
751
EXP
); for charging in connection with the legionella function via the tem-
peratures at sensors B3 and B31.
Benefit
Description
Setting
Effect
