Rapido ga110 e Installation Manual - page 22
22
7
Installation
The Rapido Special Cast-Iron Gas Heating and Hot Water
Boiler is to be installed only by a qualified specialist who
will be responsible for the technical installation, initial
operation, and correct functioning. During the installation
work measures may have to be taken so as to reduce the
level of noise.
Within the framework of the model tests it was shown
that the installation does not require a water shortage
safety device in compliance with DIN 4751 part 2.
7.1 Boiler room
The boiler is to be installed in a frost-free room close to a
waste gas chimney. In the event of the boiler being
installed in an alcove ensure that ample room is available
for cleaning and maintenance work.
It is advisable to fit the heating installation with detachable
connections and respective shut-off devices.
The boiler room must be well ventilated, free from
dust accumulation and aggressive fumes (e.g.
CFK and solvents).
7.2 Connections on heater side
Fit the heating water flow and water return in compliance
with the specifications in Fig. 1.
It is necessary to fit an expansion vat in the return circuit,
if this is not part of the package suppliedn.
The drain and fill cock in the left hand element
and the drain valve on the right hand element
must be opened if the boiler is to be emptied. In
this way the installation is fully emptied and
protected against any possible frost damages.
Fig. 2
Flow resistance [mbar] on flow side of the
GA 110 E as a function of the quantity of water [m³/h]
If any boiler for domestic hot water supply with boiler feed
pump is to be connected, ensure that a swing-type check
valve (gravity brake) is fitted in the boiler inlet and in the
heating water flow.
7.3 Gas installation
The gas installation is to be carried out only by a qualified
installation engineer. The stipulations of the country
specific technical regulations for gas installation as well
as the local regulations of the gas supply company GVU
must be adhered to. A stopcock and a thermally activated
shut-off device must be fitted in the gas supply pipe
before the boiler. The gas supply pipe must be fitted in
compliance with the specifications and the technical
regulations for gas installation. The gas connection is
fitted at the rear of the boiler. The connection dimensions
can be found in the table of technical specifications (see
Chapter 6). All boilers have been fitted ex-factory with
nozzles for natural gas type H. Nozzles for natural gas
type L are additionally supplied (not Austria).
The maximum pressure for pneumatic pressure
test of the gas burner valves is 50 mbar. Work on
gas control unit or the electrical wiring is to be
carried out only by a qualified specialist.
The maximum torque to seal the gas valve
screwing is 60 Nm.
7.4 Waste gas connection
The waste gas connection can be found in Figure 1. The
waste gas pipe must be fitted ca. 50 cm vertically in an
upward direction in respect to the chimney. Stipulations
relating to waste gas flue, in particular also the chimney
diameters, must be adhered to. The chimney must be
checked for suitability by a chimney sweep. Special
attention must be paid to the possibility of condensation
problems. In principle, the opinion of the district master
chimney sweep should be asked for.
Instruction for chimney construction
The suitability of the chimney must be calculated in
compliance with the applicable standards (DIN 4705, DIN
18 160).
[mbar]
[m³/h]
0
0,5
1
1,5
2
2,5
3
3,5
4
4,5
5
0
50
100
150
200
250
300