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DTC 200
DTC 200/ (2 sensors)
1. Heating the domestic hot water from one heating source
(solar collectors, boilers, heat pump...).
1.1 Basic
Differential thermostat controls the electric motor actuated ball
valve (EMV 110..) and the circulation pump.
The thermostat enables setting two parameters:
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 exchanger from 0K to 15K.
With these regulation you define how much the value of the
source temperature (collector, boiler,...) should exceed the tem-
perature of water around the exchanger in hot water tank, that
the thermostat opens the valve and activates the pump.
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.
1.2 Operation
DTC 200 works as single differential thermostat, which mea-
sures the temperature of heating source (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 difference should be 3K-5K. Rec-
ommendable minimal value is 5K.
When the temperature of the source exceeds the temperature
around the user for pre-set difference opens the electric motor
actuated ball valve and switches the pump.
The thermostat switches off the pump if pre-set temperature is
reached in hot water tank (adjustable from 10° to 90°C).
2DTC 200 (3 sensors)
2. Heating the domestic hot water from one heating source
(solar collectors, boilers, heat pump...) in two water tanks - DTC
200/ (3 sensors).
2.1 Basic
In this case of use is DTC200 in function of double differential
thermostat. It is used for heating the domestic hot water in two
water tanks from one heating source. This is convenient in cases
when one water tank cannot accumulate whole energy from
solar collectors. At weakly sunny days is assured enough heated
water. Differential thermostat controls circulation pump and
changeover motor valve for diverting or two motorised ball valves
and two pumps for each water tank.
The thermostat enables setting two parameters:
1. Regulation of maximum temperature in hot water tanks from
10° to 90°C.
This temperature is defined by T2 and T4 sensors witch are
generally mounted in upper third of heat exchangers.
2. Regulation of temperature difference between heating source
(T1) and exchanger (T2) from 0K to 15K.
With these regulation you define how much the value of the
source temperature (collector, boiler,...) should exceed the tem-
perature of water around the exchanger in hot water tank, that
the thermostat opens the valve and activates the pump.
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.
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2.2 Operation
DTC 200 double differential thermostat measures the tempera-
ture of heating source (collectors, boiler, ...) and in two users
(hot water tank).
One of users has priority. Usually is smaller water tank or upper
exchanger.
When the temperature is achieved, differential thermostat
changeover heating to second user - second water tank, lower
exchanger, swimming pool ...
Differential makes changeover also in following cases:
1. Temperature of water in first water tank is achieved
2. Temperature of water in second water tank is lower than
preset temperature
When the temperature in both water tanks is achieved, the pump
is switch off.
The thermostat switches off the pump if pre-set temperature is
reached in both hot water tanks (adjustable from 10° to 90°C).
For this way of use you need three sensors (T1, T2 and T4). One
is mounted in solar collector other two in upper third of indi-
vidual exchangers in hot water tanks.
Sensors T1 and T2 are designed for controlling first heating
circuit, which heats water in smaller water tank.
Sensors T1 and T4 are designed for controlling secondary heat-
ing circuit, which heats water in larger water tank or swimming
pool.
Sensor T1 is collector's sensor.
DTC 200 (4 sensors)
3. Heating the domestic hot water from two heating sources
(solar collectors, boilers, heat pump...) in one water tank - DTC
200 (4 sensors).
In this case of use is DTC200 in function of double differential
thermostat. It is used for heating the domestic hot water in one
water tanks from two heating sources (collector-boiler or col-
lectors east-west). Differential thermostat controls motorised
ball valves and pump for each heating circuit.
3.1 Basics
The thermostat enables setting two parameters:
1. Regulation of maximum temperature in hot water tanks from
10° to 90°C.
This temperature is defined by T2 and T4 sensors.
2. Regulation of temperature difference between primary heat-
ing source (T1) and exchanger (T2) from 0K to 15K.
3. Regulation of temperature difference between secondary
heating source (T3) and exchanger (T4) from 0K to 15K.
With these regulations you define how much the value of the
source temperature (collector, boiler...) should exceed the tem-
perature of water around the exchanger in hot water tank, that
the thermostat opens the valve and activates the pump.
The difference is set in relation to the volume of heat losses of
the system that depend on lengths of pipelines from source to
hot water tank and on pipeline insulation.
3.2 Operation
DTC 200 is double differential thermostat measures the tem-
perature of two heating sources (collectors, boilers,...) and of
two spots in user (hot water tank). Heating effect is provided,
when heating unit(heating element in hot water tank) exceeds
the temperature of the user for set difference.
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