Siemens RVA47.320 User Manual page 154

Note
Hydraulic circuit
Type of unit
Display of plant type
Heating curve (line 17)
Pump function Q1 (line 95)
Important
Notes
Electrical connections
Note
Legend
154/166
Siemens Building Technologies
HVAC Products
8.10 Plant types RVA47.320 - no. 36
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. Control of pump heating circuit by RVA47.320.
1
BMU 1
Other LPB capable controllers on the consumer side 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.
When there is only a heat demand signal from the d.h.w. storage tank (heating circuits
do not currently call for heat), the boiler put into operation is only that to
which the storage tank is hydraulically connected. The other boilers of the
cascade will not be released.
H1
B70
M B M B
B70 B3
H1
Q3 Q1 F1
N
L
The d.h.w. sensor (B3) is connected directly to BMU 1.
For a detailed legend, refer to page 158.
Basic Documentation RVA47.320
Application examples
2
BMU 2 BMU 3
B9 A6 / BMU
B10
M B M B PPS
M B10 B9 MD A6
N1
L
4
3
B70
BMU 4 RVA47.320
36
2.5...40
1 (heating circuit pump)
LPB
MB DB
N
B10
CE1P2379E
15.07.2002