Siemens RVA47.320 - Plant Types RVA47.320 - No. 29; Plant Types RVA47.320 - No. 33; Plant Types RVA47.320 - No. 34

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Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E
HVAC Products Application examples 15.07.2002
8.3 Plant types RVA47.320 - no. 29
The plant type no. is identical with the number displayed on line 53.
Control of a single BMU or cascade control of up to four BMUs. D.h.w. heating by one
BMU, with changeover valve.
4
1
2
3
B10
2379S29
B70
T
yp
e of unit BMU 1 BMU 2 BMU 3 BMU 4
RVA47.320
Dis
p
la
y
of
p
lant t
yp
e
29
Heatin
g
curve
(
line 17
)
---
(
inactive
)
Pump function Q1 (line 95)
1 (heating circuit
pump or no pump)
This application requires the heat demand signal from a consumer to release heat
generation:
• LPB capable controllers signal the RVA47.320 their current heat demand directly
via LPB.
• Controllers not suited for use with the LPB can deliver their heat demand signal via
input H1.
A heat demand signal from the d.h.w. storage tank releases only that boiler to which
the storage tank is hydraulically connected. The other boilers of the cascade will not be
released.
N1
B3 B9
B70
B70
M
LN
2379A 27
MB
LPB
MD
A
6 / BMU
PPS
DB
B10
B
M
H1
B10
B
M
B9
BM
A6
BM
H1
Q1 F1
Q3
L
N
The d.h.w. sensor (B3) is connected directly to BMU 1.
For a detailed legend, refer to page 158.
 Note
Hydraulic circuit
 Important
 Note
Electrical connections
 Note
Legend