Function Block Plant Configuration; Operating Lines; Parameters To Be Set; Plant Type - Siemens RVD230 Basic Documentation

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HVAC Products
11

Function block Plant configuration

11.1

Operating lines

Line Function, parameter
51

Plant type

52 Function of input at terminal B71 / U1
54 Function of circulating pump
55 Function of the contact connected to terminal H5
57 Assignment of variable speed pump control
58 Minimum speed of the speed-controlled pump
59 Maximum speed of the speed-controlled pump
60 Power factor at reduced pump speed
11.2

Parameters to be set

By selecting the required plant type and by making entries regarding the
• circulating pump
• functions at terminals B71 / U1 and H5
• speed-controlled pump
all functions and settings required for the configured type of plant or the assigned oper-
ating lines will be activated. All the other operating lines will be deactivated and hidden.
11.2.1 Plant type
The type of plant is to be entered on operating line 51.
The plant types have the following features:
• The RVD230 has a total of 28 plant types preprogrammed. For detailed information,
refer to subsection 3.1.2 "Plant types"
• Plant types 0–4 through 0–10 are used exclusively for d.h.w. heating; they cannot be
used for heating circuit control or precontrol
• Plant types 1–0 and 5–0 only provide flow temperature control; they cannot be used for
d.h.w. heating
• Plant types 5–x and 6–x provide precontrol (the precontrolled flow can supply heat to a
heating circuit or any other consumers). They also control the d.h.w. temperature.
In contrast to plant types 1–x and 2–x, these types of plant control the flow temperature
not weather-compensated but demand-dependent
• Plant type 7–2 provides precontrol and controls a heating circuit and the d.h.w. circuit
• In terms of space heating, it is possible to have mixing or pump heating circuits
• The d.h.w. can be heated by a
coil type storage heater
−
heat exchanger
−
stratification storage tank
−
• Actuating devices can be an intermediate circuit pump, charging pump, circulating
pump, mixing or diverting valve

11.2.2 Input B71 / U1

The function of input (terminal) B71 / U1 must be selected on operating line 52. The
following choices exist:
• Setting 0: The RVD230 interprets the connected sensor as a differential temperature
sensor
• Setting 1: The connected sensor is used in a heating or d.h.w. circuit as a return tem-
perature sensor. It is to be noted that when using a speed-controlled pump, sensor
B71 must always be present in the return of the respective control loop
Basic Documentation RVD230
11 Function block Plant configuration
Unit Factory setting
1–0
1
0
0
0
% 50
% 100 Variable ...100
% 85
Range
0–4...8–4
0...3
0...3
0...4
0...4
0...variable
0...100
CE1P2383en
27.05.2004