First DTC 200 Installation Instructions Manual

1

FIRŠT-ROTOTEHNIKA, s.p., Radegunda 54, SI-3330 Mozirje, Slovenija

tel. [phone], fax. [phone], e-mail: [e-mail], http://www.rototehnika-sp.si

DTC 200

DTC 200 is a double differential thermostat used
for domestic hot water heating.

INSTALLATION INSTRUCTIONS

P7-3703-08-DTC200-english-montaza

INFORMATION FOR ORDER: CODE

DTC200/4 .................................................................... 13020

The set consists of:
Differential thermostat DTC 200, 2 x sensor BSF1, 2 x sensor
KF, 2 x mounting kit, installation instructions and instruction for
use

DTC200 ....................................................................... 13018

The set consist of:
Differential thermostat DTC 200, installation instructions and
instruction for use

Sensor BSF1 .............................................................. 27072

KTY 10-6 PVC (1,5m), max 70°C

Sensor KF .................................................................. 27073

KTY 10-6 SILICON (2m), max 180°C

Mounting kit ................................................................ 27089

Tube TV2 ..................................................................... 27080

(1/2", l=100mm, inner diameter 14mm)

INDEX:

Technical data ---------------------------------------------------------- 2
Testing sensors
Mounting the thermostat
Cables connection
Choosing the working regime --------------------------------------3
Sensors installation

1. DTC 200 (2 sensors) ---------------------------------------------- 4

1.1 Basics

1.2 Operation

1.3 Electrical connection

1.4 Examples of use

2. DTC 200 (3 sensors) ---------------------------------------------- 5

2.1 Basics

2.2 Operation

2.3 Electrical connection

2.4 Examples of useji

3. DTC 200 (4 tipala) -------------------------------------------------- 7

3.1 Basics

3.2 Operation

3.3 Electrical connection

3.4 Examples of use

WARNING!

Installation instructions are meant for specialist. All examples
listed in the instructions are merely indicative. The manufac­turer accepts no responsibility for incorrect hydraulic connec­tion of machine parts of installations should comply with all
safety regulations defined by law and the rules. Carefully read
the instructions to make good use of the product.

We reserve the right to modify the instructions and the technical
data of the product without prior notice.

WITH DIFFERENTIAL THERMOSTAT ARE THREE
POSSIBLE WAY OF USE:

SYSTEM 1 (two sensors)

Heating the domestic hot water from one heating source (solar
collectors, boilers, heat pump...) with controlling the heating
source (burner).

SYSTEM 2 (three sensors)

Heating the domestic hot water from one heating source (solar
collectors, boilers, heat pump...) in:

- two water tank

- one hot water tank with two exchanger

- water tank and swimming pool

SYSTEM 3 (four sensors)

Heating the domestic hot water from two heating sources (col­lector, boiler, …) in one water tank.

FIRŠT-ROTOTEHNIKA, s.p., Radegunda 54, SI-3330 Mozirje, Slovenija

tel. [phone], fax. [phone], e-mail: [e-mail], http://www.rototehnika-sp.si

2

DTC 200

SENSORS TESTING:

For testing purposes of working of differential thermostat sen­sors are simulated with resistors. Values of the resistors are
stated in the following table:

SENSOR DIMENSIONS:

l

l=1,5m sensor BSF1, PVC, (grey cable) - DHWT
l=2m sensor KF, silicon (red cable) - collector, boiler

Technical data: DTC 200

Dimensions: 80x150x42 mm
Weight: 0,43 kg
Protection degree: IP 40/ DIN 40050
Heat class: B
Type of thermostat: P
Range of measuring temperature: -40°C ... +120°C
Limitation of temperature (depends of working regime):

Tmax: 10°C ... 90°C

Temperature difference setting for primary heating circuit:

0K ... 15K

Temperature difference setting for secondary heating circuit:

0K ... 15K

Hysteresis of thermostat: 1K-2K
Temperature of ambient: 0°C ... 40°C
Outputs: 2 relay outputs: 230V, 50Hz, 6(1)A, Working contact SPST :

- controlling the electric motor actuated ball valve and pump

Inputs: 4 - sensors

- BSF1- PVC cable (1,5m long) - DHWT sensor

- KF - silicon cable (2m long) - collector’s and boiler’s
sensors

Supply voltage: 230V , 50Hz
Power consumption: 4VA
Humidity: 5% - 70% (without condense)
Storage temperature: 0°C-70°C
For housing is used material with resistance PTI=175>250
Mounting: on the wall
Recommendable cables:

sensors cables: J-Y (St) 1X 2X0,6
pump or electric motors ball valve's cables: H03VV-F 3x0,75

Do nepravilnega delovanja termostata
pride v primerih, ko pride kratkega stika
ali prekinitve kabla tipal (glej tabelo
možnih okvar v navodilih za
uporabnika).

INSTALLATION OF THERMOSTAT

2.) Remove the thermostat’s cover.

Installation of housing bottom on the wall

1.) Unscrew the screw from bottom part of thermostat’s

housing.

With the printable template on the packaging drill two holes
(∅6mm) on the wall.

Put the enclosed two wall inserts into drilled holes (∅6mm)
and with two screws mount the housing bottom on the wall.
Do not mount the thermostat under water dropping.

3

DTC 200

FIRŠT-ROTOTEHNIKA, s.p., Radegunda 54, SI-3330 Mozirje, Slovenija

tel. [phone], fax. [phone], e-mail: [e-mail], http://www.rototehnika-sp.si

CHOOSING WORKING REGIME

Choosing working regime
Before first of use, the working regime must be selected. It is set
by jumpers in the electronic circuit. ­For each application is specific jumper position.

In further by every example is stated jumper's position.

Possible jumper’s settings:

for example:

2. On-wall connection

a) Lead cables into the thermostat housing like as shown on
the picture. On one side lead the sensor cables and on the
other the rest. With two discharger screw the cables very tight to
prevent the extraction.

a)

b)

c)

ELECTRICAL CONNECTION:

Non-isolated part of the conductor must be in the terminal
housing!

Before each interventions in the thermostat first dis­connect the main power!

d)

b) If it's not enough space for cables, use the knife and widen
the lead.

c) Cut the holes for cables lead on the housing cover

d) Use the knife and cut on spots 1 and 2 and brake remain.

ELECTRICAL CABLES CONNECTION

1. Flush mounted connection

Cables in the wall case lead through the holes at the bottom
of thermostat.