4
x
Set-up and installation
4.2 Installation versions
The ROTEX GCU compact is designed basically for
ambient air-
independent
operation. They are fitted with a concentric flue
gas/air supply pipe DN 60/100.
The
SET GCU1 (
15 50 79.17)
kit can be used to flexibly ar-
range the flue gas/air supply line for the connection directions to
the rear, to the side or upwards and extended to DN 80/125.
4.2.1 Ambient air-independent mode
Installation version 1
The ROTEX GCU compact with the
SET GCU1
and the
concentric LAS connection line
SET H
or
SET K
is connected to
the chimney or an installation shaft.
– The combustible air supply from the outside runs through the
chimney or through an installation shaft.
– The flue gas discharge to the outside runs through the same
shaft as the air supply.
– Minimum vertical distance between flue gas exit and roof
ridge:
40 cm
.
– Equipment type C
93
Installation version 2
The ROTEX GCU compact is placed directly below the roof.
Connection with
SET GCU1
and
SET L
.
– The combustible air supply and flue gas discharge run
through a concentric dual pipe.
– The combustible air supply from the outside runs through the
outer ring-shaped gap of the dual pipe, and the flue gas dis-
charge to the outside runs through the inner tube.
– Minimum vertical distance between flue gas exit and roof sur-
face:
40 cm
.
– Minimum height of the flue gas pipe:
2 m
.
– Equipment type C
33
Installation version 3
The ROTEX GCU compact is not placed directly below the roof.
The dual pipe for the combustible air supply and flue gas duct
runs through the roof truss.
– The combustible air supply and the flue gas discharge run
through a concentric dual pipe (as in Installation version 2).
– In the area of the roof truss, the dual pipe for the combustible
air supply and the flue gas duct must be laid through a protec-
tive pipe with sufficient fire resistance or be structurally sepa-
rated from the roof truss.
– Equipment type C
33
1-6
Installation versions (for the description, see chap. 4.2.1 to 4.2.3)
CA
Supply air (combustion air)
FG
Flue gas
RV
Rear ventilation
a
Installation version for ambient air-independent operation (flue
gas/supply air concentric)
b
Installation version for partial ambient air-independent operation
(flue gas/supply air separate)
c
Installation version for ambient air-dependent operation
d
Longitudinally ventilated shaft with a fire-resistance period of 90
minutes (30 minutes in low height residential buildings).
Observe country-specific regulations for fire-resistance periods!
e
Ventilation opening (1x150 cm
2
or 2x75 cm²)
f
Rear ventilation opening (150 cm
2
)
Fig. 4-7
Installation versions for the GCU compact
In some cases, the resonance in the flue gas system
can amplify the noise at the mouth of the flue gas duct.
The noise level can be effectively reduced by using a
silencer (
DN 80: E8 MSD,
15 45 78
or
DN 110:
E11 MSD,
15 45 79
).
Use of the ROTEX GCU compact in ambient air-inde-
pendent operation with a concentric flue gas/air supply
line is recommended by ROTEX. If possible, choose
this installation version!
In partial ambient air-independent operation (separate flue
gas/air supply lines with a single-walled connecting pipe) and
ambient air-dependent operation the installation room must
have a ventilation opening of at least
150 cm
2
to the outside.
This reduces the overall energy efficiency of the building ac-
cording to European Directive 2010/31/EU: EPBD.
The following descriptions of the different set-ups includes infor-
mation regarding the possible classification of equipment based
on the type of flue gas routing (equipment type) in accordance
with CEN/TR 1749. Chapters 4.2.4 and 4.5 must also be
heeded in this regard.
Separate assembly instructions are enclosed with the described
SETs.
When equipment is installed in residential rooms only
one of the installation versions 1 to 4 is permissible.
Summary of Contents for GCU compact 315
Page 81: ...13 x Notes 13 Notes...
Page 82: ...13 x Notes...
