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Set-up and Installation
24
FA ROTEX A1 BO - 10/2007
3.12 Optional connections
3.12.1 Mixer circuit
A mixer circuit can be connected
directly
to the oil condensing boiler which is controlled through the electronic boiler control.
ROTEX offers the following:
– The ready-to-connect mixer group
AMK1
(
15 60 44
), which contains a circulation pump integrated in the heat insulated
housing, a motor mixer and stop valves with temperature displays.
– The mixer circuit contact sensor
TMKF
(
15 60 62
).
Cascading
By cascading from the heat circuit expansion modules
THETA HEM1
(
15 60 61
), the system can be expanded by up
to 5 mixer circuits and/or storage tank charging circuits. The required temperature sensors need to be ordered separately (mixer
circuit contact sensor
TMKF
(
15 60 62
), storage tank temperature sensor
TSF
(
15 60 63
)).
– Connection and communication of the heating circuit expansion module
THETA HEM1
through a data bus on the central unit.
3.12.2 Room temperature controller
You can connect a separate room temperature controller
THETA RFF
(
15 40 70
) for each heating circuit to remotely
set operating modes and room temperatures from another room.
– Connection and communication of the room temperature controller
THETA REF1
via a data bus on the central unit.
You can connect a separate room temperature controller
ALPHA RTR-E
(
17 51 26
) for each heating circuit to remotely
set operating modes and room temperature from another room.
– Connection of the room temperature controller
ALPHA RTR-E
to the AB terminal of the circuit board connector
J8
on central unit (see fig 3-10).
3.12.3 Room station
All temperature values and operating modes of the control unit THETA 23R (central unit) can be displayed and changed
through the room station
THETA RS
(
15 70 18
). Apart from the chimney sweep and manual operation function, all controls
(display, buttons, rotary switch and functions (e.g. timer programmes) are identical to those on the central unit.
The room station
THETA RS
can be installed in a suitable place in the building and can be used to remotely operate the boiler
control unit.
– Connection and communication of the room station
THETA RS
through a data bus on the central unit.
3.13 Filling the heating system
Only fill the heating system if all installation work has been completed.
Adjusting the pressure gauge
The correct minimum pressure marking must be set on the pressure gauge glass before filling the system for the first time:
• Rotate the pressure gauge glass (fig 2-1, pos. 12) in such a way that the minimum pressure marking corresponds to the
system 2 m
(1 m water column corresponds to 0.1 bar).
Checking the water quality
• Observe instructions for water connection according to chapter 3.6.
Filling the system
• Connect the filling hose with return flow inhibitor (
½
") at the filling and draining fittings (KFE cock, fig 3-3, pos. 3) and secure
against sliding by using a hose clamp.
• Open the KFE cock and watch the pressure gauge (fig 2-1, pos. 12).
• Fill the system with water until the marking of the system overpressure is roughly in the centre of the green range of the
pressure gauge display.
• Close the filling & draining cock.
• Vent the entire heating network (open the system control valves).
• Check the water pressure on the pressure gauge again and top up with water if necessary.
• Close the KFE cock, remove the filling hose and return flow inhibitor from the filling and draining fittings.
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