Additional Heat Source; Additional Pump; 6.11.1 Ch Pump; Ch Boiler Protection - Tech Controllers EU-800 PID User Manual

6.10 A
DDITIONAL HEAT SOURCE
This option is available only in Standard operation mode. Using this option the user may enable or disable the additional heat
source.
6.11 A
DDITIONAL PUMP
FITTER'S MENU
The user may connect an additional pump. Next, depending on the type of pump, it needs to be configured properly.

6.11.1 CH PUMP

Once this option has been selected, the additional pump serves as the CH pump. The pump is activated when the sensor
temperature exceeds the temperature threshold.
The following parameters need to be configured for this function to work correctly:
6.11.1.1 ACTIVATION TEMPERATURE
This parameter defines the activation time of the additional pump which serves as the CH pump. When the selected sensor
reaches this temperature, the pump is activated.
6.11.1.2 HYSTERESIS
This parameter defines the hysteresis of the additional CH pump threshold temperature. It is the difference between the
threshold temperature and the temperature of deactivation.
Example:
When the threshold temperature is 40°C and hysteresis is 5°C. When the threshold temperature is reached, CH pump is activated.
It is switched off when the temperature drops to 35°C).
6.11.1.3 SENSOR SELECTION
It allows the user to decide which sensor should provide data for activation of the additional CH pump: CH sensor, DHW sensor,
valve 1 sensor, return sensor, weather sensor, buffer sensor top, buffer sensor bottom.
6.11.1.4 ROOM REGULATOR
This function enables the user to choose the regulator (TECH regulator or Standard regulator) which will send a signal when the
pre-set room temperature is reached (the pump will be disabled).

6.11.2 CH BOILER PROTECTION

When this option has been selected, the additional device will function as a boiler protection pump - preventing too low water
temperature on the boiler return. This pump will be activated after the boiler reaches appropriate temperature and it will
operate until a sufficient return temperature is reached. The following operation parameters need to be configured:
6.11.2.1 ACTIVATION TEMPERATURE
This parameter defines the temperature of return pump activation. The temperature is read from sensor 1 (CH boiler
temperature).
ADDITIONAL
PUMP
26
OFF
CH pump
CH boiler protection
Circulating pump
Short circuit pump