DeDietrich C 330 ECO, Инструкция по установке, эксплуатации и обслуживанию, Страница: 19 / 92

4 Description of the product
4.1 General description
The C 330 ECO / C 630 ECO is a freestanding gas boiler with the
following characteristics:
High-efficiency heating.
Heat exchanger made of cast aluminium sections.
Limited emissions of polluted substances.
Has transport wheels as standard.
Left- or right-hand version of the water and flue gas side connections
possible.
Separable for assembly in boiler room.
DIEMATIC iSystem or IniControl control panel.
The C 630 ECO comprises a left-hand and a right-hand module. These
are combined on the flue gas side (optionally on the air side) and also in
terms of their casing.
The following boiler types are available:
C 330 ECO 280
C 330 ECO 350
C 330 ECO 430
C 330 ECO 500
C 330 ECO 570
C 330 ECO 650
279 kW output
350 kW output
425 kW output
497 kW output
574 kW output
651 kW output
C 630 ECO 560
C 630 ECO 700
C 630 ECO 860
C 630 ECO 1000
C 630 ECO 1140
C 630 ECO 1300
558 kW output
700 kW output
850 kW output
994 kW output
1148 kW output
1303 kW output
4.2 Operating principle
4.2.1 Regulating the water temperature
The boiler is fitted with an electronic temperature control with a flow and
return temperature sensor. The flow temperature can be adjusted between
20°C and 90°C. The boiler modulates back when the set flow temperature
is reached. The switch-off temperature is the set flow tempe 5°C.
4.2.2 Protection against shortage of water
The boiler is fitted with protection against a shortage of water that is based
on temperature differences (difference in temperature between flow and
return). From ΔT = 25K (factory setting) the boiler reduces its output by
modulating to remain in operation as long as possible. At ΔT ≥ 25K, the
boiler goes into part load. At ΔT > 25 + 5K, the boiler goes into a normal
control stop (blocking).
4.2.3 Maximum protection
The maximum temperature protection shuts the boiler down in the event
that an excessively high water temperature (110 °C) is reached. Once the
cause of the fault has been remedied, the boiler can be unlocked by
pressing the
button for 2 seconds.
4.2.4 Air pressure differential switch
Before a start and when the boiler is in operation, the air pressure
differential switch PS measures the difference in pressure between the
measuring points on the back of the heat exchanger p
+
and the air box p
-
.
4 Description of the product
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