Technische Alternative UVR 16x2 User Manual

Heating demand
27
Parameters
Demand temperature
T.dem. set
Diff.on
Diff. off (shown only if the
T.off sensor is not
defined)
Display: Start threshold at the T.dem. sensor
Start differential for T.dem. set
Stop differential for T.dem. set
Shutdown temperature
(shown only if the T.off
sensor is defined)
T.off set
Diff. off
Display: Shutdown threshold at the T.off sensor
Stop differential for T.off set
Low end temperature
T.dem. min.
Heating demand if the demand temperature "T.dem. set" or shutdown
temperature "T.off set" falls below this value (only effective if T.dem.
set > +5 °C)
Generator temperature
(shown only if the T.gen.
sensor is defined)
T.gen. max.
Diff. on
Diff. off
Display: Limit value for the maximum generator temperature
Start differential for T.gen. max.
Stop differential for T.gen. max.
Minimum runtime
Generator
Specifies the minimum ON time
➢ Starting the burner by demand from one sensor and shutting it down by another is called
using a holding circuit.
Start threshold = Set demand temperature + Diff. on at the T.dem. sensor
Shutdown threshold = Set shutdown temperature + Diff. off at the T.off sensor
➢ For a control function with start and shutdown thresholds on just one sensor, the Shutdown
temperature input variable must be set to unused. If the boiler sensor is entered instead of
the cylinder sensor, the result is modulating boiler operation. Set demand temperature
thereby receives a start differential and a stop differential alongside its threshold value:
Start threshold = Set demand temperature + Diff. on
Shutdown threshold = Set demand temperature + Diff. off
➢ A minimum temperature can be specified using the low end temperature T.dem. min.
If the set temperature for demand or shutdown is below that value, the low end temperature
is applied as the threshold value.
The low end temperature is only effective if the relevant set temperature is > 5 °C.
A value > 30 °C is only useful if the function is being used for modulating boiler operation. In
that case, the start and shutdown thresholds apply to the T.dem. sensor.
➢ If the generator temperature (boiler temperature) exceeds the value T.gen. max. + Diff. off,
demand will not be permitted and will be switched off even if the minimum runtime has not
yet finished.
Demand will not be re-enabled until the temperature falls below T.gen. max. + Diff. on. The
minimum runtime counter will then restart.

Technische Alternative UVR 16x2 Specifications

General

Data logging	Yes, internal memory
Weight	Approx. 300 g
Input Voltage	24 V DC
Display	LCD, 2x16 characters
Communication Interfaces	CAN
Dimensions	144 x 90 x 59 mm

Summary

General Information

Core Concepts

Input Variables

Explains the link between sensors and function inputs for data.

Parameters and Settings

Hystereses

Adjustable start and stop differentials creating switching hysteresis for control.

Analogue Function

Calculation Parameters

Settings for calculations like minimum, maximum, average, sum, and filter.

Multiplexer and Demultiplexer Parameters

Configuration for selecting input variables and routing output values.

Heating Demand

Cooling Demand

DHW Demand

Shading Function

Individual Room Control

Heating Circuit Control

Operation Modes

Blind Control

Cascade

Cooling Circuit Control

Pasteurisation Function

Message Function

Mixer Control

PID Control

P-I-D Values and Parameters

Explains proportional, integral, and derivative components for system control.

Profile Function

Time Switch

Time Programs and Settings

Scaling Function

Solar Cooling

Solar Control

Solar Start / Drainback

Timer Function

Parameters and Modes

Heat Meter

Parameters and Calibration

Maintenance Function

Conservatory Function

Input Variables and Parameters

Manages window ventilation based on room temp, wind, or rain sensors.

Meter / Counter

Hours Run and Pulse Counting

DHW Circulation

Input Variables and Parameters

Manages DHW circulation pump based on time, pulse, or mixing protection.