Rotex GasSolarUnit Series User Manual

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5.2 Cylinder
The ROTEX GasSolarUnit/GasCompactUnit is a
DHW cylinder developed in accordance with
the latest know-how regarding water hygiene
with an integral gas fired condensing boiler
(Fig. 2.1.1 and 2.1.2).
The cylinder is a twin-wall plastic
construction. The space between the internal
and external wall is filled with thermal foam
insulation. This design results in excellent
thermal insulation and very low surface heat
losses.
The 3-4 mm thick outer skin is impact and
shock-proof and protects the cylinder against
damage. During commissioning,t he cylinder is
filled once with water. This water is
unpressurised and will not be replaced during
use.
The cylinder water can be heated by a number
of different means:
1) by the integral gas fired condensing boiler
2) with the GSU via an additionally connected
solar heating system (ROTEX Solaris
system)
3) or via additional heat sources that are
directly connected to the unpressurised
area (e.g. a DHW heat pump)
The DHW is heated inside the spiral heat
exchanger constructed from corrugated
stainless steel pipe, that is located inside the
cylinder and is fully surrounded by the cylinder
water. The specific hygienic water properties
of the GasSolarUnit/GasCompactUnit are
based on the separation of the unpressurised
cylinder water and the DHW flowing through
the corrugated pipe heat exchanger.
The DHW zone (pos. D) is a combination of
DHW cylinder and instantaneous water heater.
The replenishing cold water is initially routed
inside the heat exchanger (pos. 18) to the
bottom of the cylinder to cool down the solar
zone (pos. E) as far as possible. On its path
upwards, the DHW continuously absorbs the
heat of the unpressurised cylinder water
(pos C), resulting in a distinct temperature
stratification inside the cylinder.
Fig. 05.01.10: Adjusting the ignition and ionisation electrodes
Adjusting the ignition and
ionisation electrodes
The electrodes are adjusted at the factory for
optimum performance. Adjust or replace them
in accordance with Fig. 5.1.10, should they
have been bent out of shape.
Please note: The electrodes
are brittle and can easily break
off if they are bent in a cold
state. For a re-adjustment of the
electrodes, remove the burner and heat
up the electrodes to incandescence with
a blow torch prior to bending.

Rotex GasSolarUnit Series Specifications

General

Brand	Rotex
Model	GasSolarUnit Series
Category	Boiler
Language	English