Advertisement
DTC 200/2G
1. HEATING THE DOMESTIC HOT
WATER FROM ONE HEATING
SOURCE (SOLAR COLLECTORS,
BOILERS, HEAT PUMP...) WITH CON-
TROLLING 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 ex changer.
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-
pera ture 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 tem-
pera ture 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 (ad justable 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.
T-piece 1/2"
flow direction
pipe1/2"
84
page
VDR resistor thermo-shrinkable
tubes
sensor cable
extension cable
T2 SENSOR'S INSTALLATION INTO DOMESTIC HOT WA TER
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).
WARNING!
At mounting protect sensors against ambient influence and
assure suitabile mechanical protection.
ELECTRIC CONNECTION
Before each intervention in the thermostat first
disconnect the main power!
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.
TERMINAL CONNECTION
1,2
sensor T1 - heating source (collector, boiler...)
3,4
sensor T2 - hot water tank
11
N - neutral - burner
12
L - phaze - burner, 1(1)A, 250V , 50Hz
13
N - neutral
14
L - phaze -pump 1(1)A, 250V , 50Hz
15
L - phaze mains 230V , 50Hz
16
N - neutral mains 230V , 50Hz
BURNER control
On hot water tank with clip, wire and spring strip
(use paste for better heat transmission).
1(1)A, 250V
Hide quick links:
Advertisement
