Technische Alternative UVR 16x2 User Manual

DHW demand
33
Input variables
Enable
General enabling of the function (digital value ON/OFF)
DHW temp. top
Analogue input signal for the top cylinder temperature
DHW temp. bottom
Optional: Analogue input signal for the bottom cylinder temperature
Time condition status
Digital input signal, ON/OFF (e.g. from the Time switch function)
Set temperature top
Analogue value specifying the DHW temperature required at the top
Set temperature bottom
Analogue value specifying the DHW temperature required at the bottom
Minimum temperature
top
Analogue value specifying the minimum temperature required at the top
outside the time window
Minimum temperature
bottom
Analogue value specifying the minimum temperature required at the
bottom outside the time window
Offset set temperature
top
Optional: Analogue value specifying an offset for Set temperature top
(not applied to Minimum temperature top)
Offset set temperature
bottom
Optional: Analogue value specifying an offset for Set temperature
bottom (not applied to Minimum temperature bottom)
External switch
Digital input signal, ON/OFF, for changeover between standard mode as
per time program and demand only to maintain T.DHW min.
Charge once
Digital input signal, ON/OFF: Charge the cylinder at any time, even
outside the time window, at the push of a button
Finish charging
Digital input signal, ON/OFF, for complete charging of the cylinder
Set temperature for
charging once
Minimum temperature for “Charge once”
➢ Demand can be started and stopped either by just one sensor (top) or by two sensors (top
and bottom). If the sensor for DHW temperature bottom is set to unused, demand is
started and stopped by means of DHW temperature top only.
➢ If you want the set values for demand, shutdown and minimum temperatures to be user-
defined settings (thermostat thresholds), specify User as the source and enter the required
value.
➢ The "Time condition status" allows you to switch between the top/bottom set values (time
condition ON) and the minimum top or bottom set values (time condition OFF).
➢ The set temperatures can also come from the Time switch function. However, note that the
effective set temperature when Time condition status is OFF is the minimum temperature.
Therefore if time conditions are not required, the Time condition status must be changed
by User to ON.
➢ If the set temperatures are below the minimum temperatures, the minimum temperatures
are applied as the lowest limit.
➢ The Offset values do not apply to the minimum temperatures.
➢ The External switch input variable allows you to use another function (e.g. Calendar
function) or a manual switch (digital input) to switch between standard mode as per time
program (status of the external switch: OFF) and demand to maintain the minimum
temperature only (status of the external switch: ON) (application: e.g. holidays).

Technische Alternative UVR 16x2 Specifications

General

Brand	Technische Alternative
Model	UVR 16x2
Category	Controller
Language	English