14
5.
Regulation
5.1
Control, safety and regulation elements
As a standard the is delivered without the superior regulation and equipped with control panel with network
module.
The manufacturer does not recommend to operate boiler without regulation. The standard version (without
regulation) is determined for customers who have their own system of boilers control.
Besides the network module in the control panel there is mounted the combined device - the
thermomanometer.
The network module is equipped with following elements (according to individual boiler variants):
-
the main switch with signalling
-
exceeded temperature signalling (safety thermostat and combustion products return flow fuse)
-
automatics failure unblocking
-
reduced/rated boiler output switch
-
safety thermostat unblocking (at the open systems keep the setting by manufacturer it means to 97 °C)
at the closed systems with pressure expansion reservoir can be set up to 105 °C)
-
combustion products return flow fuse unblocking (set to 75 °C)
-
boiler thermostat (0 – 85 °C range, recommended to be set to 85 ºC)
-
network fuse 2,5 A
The combustion products return flow fuse sensor is installed in horizontal draught diverter and in case of an
insufficient combustion products drawing-off it closes down the boiler. The sensors of boiler and safety
thermostats (possibly also the of pump thermostat) and of the thermometer are installed in the reservoir of
left outer section and the manometer clack valve is installed in upper part of the right outer section.
5.1.1 Equitherm regulation
Optionally together with boiler there is delivered one of four kinds of regulation, or their combination
according to the purchase order key stated in chapter no. 1.1. The regulators are delivered in a
separate packing and in the place of boiler installation there is mounted the control panel according
to the requirements. The vacant places in panel are in standard delivery equipped with blind flanges.
The most important characteristics of Siemens regulators:
equitherm regulation
a quick inhibition and a quick change in heating medium temperature (quick inhibition and a quick
heating)
summer/ winter automatic switching-over
boiler relief when starting
boiler protection against overheating (pump operation drifting)
pre-setting of minimum and maximum value of boiler heating water temperature (boiler outlet heating
water temperature)
anti-freeze protection of buildings and facilities
pumps protection by means of a regular start
heating schedule (every day during a week can be programmed separately)
possibility of mutual co-operation of up to 16 regulators in RVA series…
when connecting the indoor device QAA50 or QAA70 it is possible to control the boiler remotely and
there is guaranteed the adaptation of heating curves in dependence on buildings construction and heat
consumption.
On top of it RVA 33.121, RVA 43.222 and RVA 63.280 regulators have:
the function of a “ chimney sweeper” – the boiler is automatically set into operation for required
combustion products measurement- the boiler is operated in full swing regardless the preset automatic
regime.
Registration of operation hours and number of burner starts
Summary of Contents for GARDE G 42 ECO
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