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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
25
Return diversion not possible since there is no buffer or combi storage tank
(ZuFu1, operating lines 140 through 142).
26
B43, Y14 or Y¯14 missing (ZuFu2, operating lines 143 through 145).
27
Partial storage tank charging not possible since there is no buffer or combi stor-
age tank (ZuFu2, operating lines 143 through 145).
28
Transfer pump Q11 (ZuFu3, operating line 146) not possible when there is no
combination of buffer storage tank / d.h.w. storage tank, or when the d.h.w. stor-
age tank partial diagram contained in the basic diagram includes pump Q13.
29
Electric immersion heater cannot be used since there is no d.h.w. or combi stor-
age tank (ZuFu4, operating line 171).
32
Third buffer storage tank sensor B42 (ZuFu 11, operating line 156) cannot be
used since there is no buffer and no combi storage tank.
33
Solar B62 (ZuFu 13, operating line 158) with selected solar collector partial dia-
gram cannot be used
34
In the case of d.h.w. charging with BMU with time switch program and d.h.w. set-
points from the RVP540 / RVP550 (operating line 194, setting 1), only the storage
tank partial diagrams KoSp 0 - 3, BwSp 0 - 3 and 7 - 8 may be used.
35
In addition to a d.h.w. partial diagram with Q13 (= 2 storage tanks), a buffer stor-
age tank has been selected (more than 2 storage tanks not possible)
36
More than 2 mixing valves have been defined. A maximum of 2 mixing valves can
be controlled (diverting valves are not classified as mixing valves and, for this
reason, are not counted as such)
37
A d.h.w. circulating pump (ZuFu4, operating line 147) has been selected although
the diagram does not contain any d.h.w. or combi storage tank.
38
An external heat source (e.g. BMU / RVL471 or RVL472) is connected although
none has been expected (OeG0...OeG6, OeG9).
39
Inadmissible reduction of B72 (operating line 135).
40
Sensor B13 or relay K18 / K¯18 is missing with solar swimming pool heating (for
this function, the sensor and at least one relay must be defined).
41
Flue gas temperature sensor B8 is missing while, at the same time, flue gas tem-
perature sensor function K17 has been defined (operating lines 154 and 155).
42
Although only one single-stage heat pump is used, an additional pump Q17 for
heat pump stage 2 has been defined (ZuFu5, operating line 148).
43
Inverted output Q¯3 (ZuFu26, operating line 172) for the d.h.w. diverting valve Q3
cannot be set since the selected d.h.w. or combi storage partial diagram contains
no Q3.
44
Inverted output K¯8 (ZuFu15, operating line 161) for the solar heat exchanger di-
verting valve K8 cannot be set since the selected solar collector partial diagram
contains no K8.
45
Inverted output K¯9 (ZuFu16, operating line 162) for the solar diverting valve K9
cannot be set since the selected solar collector partial diagram contains no K9.
46
The electric immersion heater for the buffer storage tank (ZuFu24) has been se-
lected although no buffer or combi storage tank is used.
47
Solar swimming pool heating (ZuFu28) has been selected although no solar col-
lector is used.
49
Overtemperature protection (ZuFu9) has been selected although no storage tank
is used.
50
The heat generation lock (ZuFu27) has been selected although there is neither a
buffer nor a combi storage tank.
