First EMV 110 502 Series, Manual

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DTC 100/2 TDG
GENERAL
DTC 100/2TDG is a single differential thermostat featuring temperature display, designed
for domestic water heating from one heating source (solar collectors, boilers, heat,
pumps,...) The thermostat controls pump or motor actuated ball valve (EMV 110...) and
burner or electric heating element.
Parameter settings:
1. Regulation of maximum temperature in hot water tank from 10° to 90°C.
This temperature is defined by T2 sensor witch is generally mounted in upper third of
heat exchanger.
2. Regulation of difference for higher exchanger from 2K to 15K
With this parameter you define how much the value of the source temperature (collector,
boiler,...) should exceed the temperature of water around the exchanger in hot water tank,
that the regulator activates the pump or opens motor actuated valve. The difference is set
in relation to the volume of heat losses of the system which depend on lengths of pipelines
from source to hot water tank and on pipeline insulation. Built-in digital display enables
prompt reading of the temperatures of individual sensors and of all set values as well.
3. It has built in counter of pump working hours.
OPERATION
DTC 100/2TDG single differential thermostat measures the temperature of two heating
sources (collectors, boiler ...) and in user (hot water tank).
Heating effect is provided, when heating source temperature is higher than the temperature
of the user (water in hot water tank). Consequently minimum adjustable difference is 2°
(factory set to 5°). When the temperature of the source (collector) exceeds the temperature
around the user for pre-set difference it switches ON the pump and opens motor actuated
ball valve.
The thermostat switches OFF the pump if pre-set temperature is reached in hot water
tank (adjustable from 10° to 90°C).
If boiler or electric heating element is connected, the thermostat can switch it ON. When
is heating required, thermostat switches ON heating source. When the temperature of
the source (collector) exceeds the temperature around the user for pre-set difference the
thermostat switches ON the pump and opens motor actuated ball valve.
If any sensor is faulty (interrupted or short circuited), thermostat immediately switches
off the pump and signalizes the condition on the display (“Er1” - sensor interrupted, “Er2
- sensor short circuited).