Display Of Plant Type - Siemens RVA47.320 User Manual

Cascade controller for modulating gas-fired boilers
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Note
Special displays
Benefit
Description
Setting
Effect
Plant type
56/166
Siemens Building Technologies
HVAC Products
Test step 0
Display of the function (B70/B4) [°C] selected on operating line 97.
Test step 1
Display of the d.h.w. temperature (B3).
Test step 2
Display of the cascade flow temperature (B10).
Test step 3
Display of the actual outside temperature (B9)
Test step 4
Display of room temperature acquired with room unit connected to
A6
Test step 5
Display of input H1 according to the function selected on operating
line 170 [°C, - - - , o o o].
For additional information, refer to section "Commissioning".
– – –
Sensor with open-circuit or no sensor connected
0 0 0
Sensor with short-circuit
4.3

Display of plant type

Plant structure is easy to understand
Straightforward checking of configuration
Displays the plant type used.
1. Press the operating line selection buttons to select operating line 53.
2. No setting can be made with the + / - buttons.
Display
0, 27...36, 65...67
The number of the current plant type will automatically be displayed on this line.
0
Invalid configuration of plant
27...36,
Valid configuration of plant
65...67
Based on the connected peripheral devices and parameter settings, the controller
ascertains the current plant type.
The plant type is displayed in the form of a number which corresponds to the plant
diagram.
For the graphic illustration of the various plant types, refer to chapter "Application".
The following factors have an impact on the generation of the type of plant:
- Connection of a d.h.w. temperature sensor:
The controller identifies a connected d.h.w. temperature sensor and also whether it is
connected directly to the controller or to one of the BMUs.
- Setting of operating line "Type of d.h.w. demand" (line 125)
Based on this setting, the controller knows whether the d.h.w. is heated by means of
a temperature sensor or control thermostat.
- Selection of pump connected to output Q1 (operating line 95)
- Adjustment of heating curve (operating line 17)
(- - : - or value between 2.5 and 40)
Basic Documentation RVA47.320
Description of the heating engineer settings
Unit
-
CE1P2379E
15.07.2002

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