Computherm WPR-100GE User manual

COMPUTHERM WPR-100GE
Pump controller with immersion sleeve
Operating Instructions

- 2 -
GENERAL DESCRIPTION OF THE PUMP CONTROLLER
The pump controller uses its heat sensor and the immersion sleeve to detect the temperature of the
medium standing or owing in the pipe/boiler, switches the 230 V at the output at the set temperature.
By the pre-mounted wires any circulating pump with a voltage of 230 V or other electrical appliance
within the load capacity limits can be easily controlled.
The pump controller is responsible for turning the pump on and o󰀨 at the set and measured temper-
ature, so it only operates when it is necessary. Intermittent operation saves signicant energy and
increases pump life and reduces operating costs. Its digital display allows easier and more accurate
temperature measurement and adjustment than simple, traditional pipe thermostats, and makes it
easier to change modes and settings.

- 3 -
The controller has several modes that makes it possible to use
for manual and temperature-based control of the circulating
pumps in heating and cooling systems. In case of temperatu-
re-based control the connected pump switches on/o󰀨 accor-
ding to set temperature and the switching sensitivity.
1. LOCATION OF THE DEVICE
It is recommended to install the pump controller in an
immersion sleeve installed in the heating / cooling pipe
or boiler on which the control is based, so that it is as
close as possible to a maximum of 1.5 m from the pump
to be controlled and the 230 V supply. Do not use a wet,
chemically aggressive or dusty environment.

- 4 -
2. INSTALLATION OF THE DEVICE
Warning! The device must be installed/put into service by a competent person! Before commissi-
oning make sure that neither the thermostat nor the appliance you want to connect to is connec-
ted to the 230 V mains. Modifying the device can cause electric shock or product failure.
Caution! The voltage 230 V is displayed when the output of the appliance is switched on. Make
sure that the wires are properly connected and that that there is no risk of electric shock or short
circuit!
Connect your device as follows:
● Before installing, disconnect the immersion sleeve from the back of the pump control after
loosening the screw there. After installing the immersion sleeve, place the pump controller’s
heat sensor in the immersion sleeve and reattach the device again to the immersion sleeve
using the screw.
● Connect the 3 wires to the pump you want to control. The marking of the wires are based on
the EU standard: brown - phase, blue - zero, green-yellow - earth.
● Connect the pump controller to the 230 V mains using the pre-mounted connector

- 5 -
mosta
8.8.8.8
230 V AC, 50 Hz 230 V AC, 50 Hz
szivattyú
szivattyúvezérlő
Warning! Always take into account the loadability of the controller relay when connecting
(10 A (3 Inductive load)) and follow the instructions of the manufacturer of the pump which you
would like to control.
Pump controller
Pump

- 6 -
3. BASIC SETTINGS
After the appliance is connected, the measured temperature is shown on the display when the appli-
ance is switched on. You can change the default settings as written below.
3.1. Change the mode of control (F1/F2/F3)
The device can be used in three modes, which are detailed as follows:
- F1 (factory default) - Control of a heating system’s circulating pump: the output is turned on
if the measured temperature is higher than the set temperature. The switching sensitivity is taken
into account when switching.
- F2 - Control of a cooling system’s circulating pump: the output is turned on
if the measured temperature is lower than the set temperature. The switching sensitivity is taken
into account when switching.
- F3 - Manual mode: regardless of the measured temperature, the output is permanently switched
on/o󰀨 according to the setting.
To switch between modes, press and hold the button for 4 seconds. The currently selected F1, F2,
or F3 value is displayed.

- 7 -
It is possible to switch between the modes By pressing the or buttons. To save this setting, wait
after the last key press approx. 6 seconds. The display will then return to the state (on/o󰀨) from which
you entered the mode selection menu after a few ashes and the settings will be saved.
3.2. Selection of switching sensitivity
The pump controller in modes F1 and F2 switches the output according to the measured temperature
and switching sensitivity. In these modes, it is possible to change the switching sensitivity. By selecti-
ng this value, you can specify how much the device switches the connected pump on/o󰀨 below/above
the set temperature. The lower this value is, the more constant the temperature of the circulating uid
will be. The switching sensitivity can be set between ± 0.1 °C and ± 15.0 °C (in 0.1 °C steps). Except
some special cases, we recommend setting ± 1.0 °C (factory default setting). See Chapter 4 for more
information on switching sensitivity.
To change the switching sensitivity, when the pump control is switched ON, in F1 or F2 mode, press
and hold the button for approximately 2 seconds until the „d 1.0” (factory default) appears on the
display. By pressing the and buttons you can change this value in increments of 0,1 °C within the
range of ±0,1 °C and ±15,0 °C.
To exit and save the setting, wait for approx. 4 seconds. The device then returns to its default state.

- 8 -
3.3. Pump protection function
ATTENTION! When using the pump protection function, it is recommended that the part of the hea-
ting system in which the pump to be controlled is installed has a heating circuit during the heating-free
period in which the heating medium can ow freely at all times. Otherwise, using the pump protection
function may damage the pump.
The pump protection function of the pump controller protects the pump from sticking during long pe-
riods of non-use. When the function is on, the output will turn on every 5 days for 15 seconds if the
output has not been turned on in the last 5 days. During this time, „” will appear on the display
instead of the measured temperature.
To activate/deactivate the pump protection function, rst switch o󰀨 the appliance by pressing the
button once (the display switches o󰀨), then press and hold the button for 3 seconds. „POFF” (factory
default setting) will appear on the display, indicating that the function is switched OFF. Press or
to change between ON/OFF states. The ON status of the function is indicated by „”. To save the
setting and exit the function setting, wait approx. 7 seconds. The device is then switched OFF.

- 9 -
3.4. Frost protection function
ATTENTION! The use of the frost protection function is only recommended if there is a heating circuit
in the heating system in which the pump to be controlled is installed, even during the heating-free
period, in which the heating medium can ow freely at all times. Otherwise, using the frost protection
function may damage the pump.
The frost protection function of the pump controller, when switched ON, switches on the pump when
the measured temperature drops below 5 °C and leaves it ON until the measured temperature rea-
ches 5 °C again to protect the pump and the heating system. During this time, the display alternates
between „” and the measured temperature. When the frost protection function is activated, it ope-
rates in all three modes (F1, F2 and F3).
To switch the frost protection function ON/OFF, rst switch o󰀨 the appliance by pressing the button
once (it switches OFF the display), then press and hold the button for 3 seconds. „FPOF” (factory
default setting) will appear on the display, indicating that the function is deactivated. Press or
to change between ON/OFF states. The ON status of the function is indicated by „”. To save the
setting and exit the function setting, wait approx. 7 seconds. The device is then switched OFF.

- 10 -
4. OPERATION OF THE INSTALLED PUMP CONTROLLER
In operating modes F1 and F2, the pump controller controls the device connected to it (eg. a pump)
based on the temperature it measures and the set temperature, taking into account the set switching
sensitivity (factory default ±1.0 °C). This means that if the pump controller is set to F1 mode (heating
system circulating pump control) and 40 °C, the 230 V will appear at the controller’s output at a tem-
perature above 41.0 °C at a switching sensitivity of ±1.0 °C (the pump connected to it switches ON)
and at temperatures below 39.0 °C the output switches OFF (the pump connected to it switches OFF).
In F2 mode, the output switches exactly the opposite way. You can adjust the set temperature with
the and buttons.
In F3 mode, the output is permanently ON/OFF according to the setting, regardless of the measured
temperature in F3 mode. You can change between ON and OFF by using the and keys.
During normal operation, the device always displays the currently measured temperature on its disp-
lay in all three operating modes. The device indicates the ON/OFF status of its output by means of
the LED above the display.