FIRŠT-ROTOTEHNIKA, s.p., Radegunda 54, SI-3330 Mozirje, Slovenija
tel. +386 3 898 35 00, fax. +386 3 898 35 35, e-mail: [email protected], http://www.rototehnika-sp.si
4
DTC 200/2G
T2 SENSOR’S INSTALLATION INTO DOMESTIC HOT WATER
TANK (DHWT):
Use BSF1 sensors with PVC cable insulation (GRAY
colour)!
Install T2 sensor to provided place in hot water tank or on hot water
tank wall under isolation as contact sensor in upper part of exchanger.
When sensor is mounted as contact one we recommend to coat it
with heat conducting paste or liquid metal.
In special purpose vertical or horizontal tube
(sensor should be protected against accidental
extraction).
On hot water tank with clip, wire and spring strip
(use paste for better heat transmission).
WARNING!
At mounting protect sensors against ambient influence and
assure suitabile mechanical protection.
Grounding wires should be
connected to special terminal
pins situated on left side of
terminal strips.
The thermostat is
designed for fixed
installation. When performing
electric installation, an element
should be inserted which
enables at least 3 mm
separation of thermostat from
the mains (switch or socket).
Prior to each intervention in the
thermostat, first disconnect it
from the mains.
ELECTRIC CONNECTION
Before each intervention in the thermostat first
disconnect the main power!
6(1)A, 250V
TERMINAL CONNECTION
1,2
sensorT1 - heating source (collector,boiler…)
3,4
sensor T2 - hot water tank
11
N - neutral - burner
12
L - phase - burner, 6(1)A, 250V , 50Hz
13
N - neutral pump
14
L - phase - pump 6(1)A, 250V , 50Hz
15
L - phase mains 230V , 50Hz
16
N - neutral mains 230V , 50Hz
BURNER control
11 12
DTC200/2G
Operating
thermostat
Safety
thermostat
BOILER
230V
50 Hz
Main
switch
Switch
Choise (summer/winter regime)
1. HEATING THE DOMESTIC HOT
WATER FROM ONE HEATING
SOURCE (SOLAR COLLECTORS,
BOILERS, HEAT PUMP...) WITH
CONTROLLING THE HEATING
SOURCE (BURNER).
1.1 BASICS
Differential thermostat controls the electric motor actuated ball
valve (EMV 110..) and the circulation pump. If it necessary turns
ON or OFF the heating source (burner).
The thermostat enables setting of two parameters:
1. Regulation of maximum temperature in hot water tank from
5° to 85°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
temperature 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 200/2G single differential thermostat measures 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.
Recommendable 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 5° to 85°C).
If it's need for heating the hot water tank and the temperature of
heating source (boiler) is to low, then thermostat switch on the
burner of the boiler and when the conditions of the difference is
assured, pump is switch on.
The burner is always on, when the heating is needed.
1.3 SENSOR INSTALLATION
T1 SENSOR’S INSTALLATION INTO SOLAR COLLECTOR OR
BOILER:
Use KF sensors with silicon cable insulation (RED
colour)!
Install it as immersion sensor in collecting pipe at the top of the
collectors or boiler in provided sleeve. Sensor connect on the
terminals 1 and 2. Use the cable J-Y (St) 1X 2X0,6.
For cables longer than 15m we recommend over-voltage
protection with VDR resistor. For over voltage protection is
recommended use of armoured cable and it must be earthling.
flow direction
T-piece 1/2”
pipe1/2”
VDR resistor thermo-shrinkable
tubes
sensor cable
extension cable