Technical data

28
Minimum clearances are necessary in order to be able to carry out maintenance
operations.
The fumes outlet terminals must be installed in such a way that they do not allow the
fumes to collect or return to the circuit in the unit's installation area. The outlet terminal
must be constructed in conformity with established regulations.
Figure 5.2 – Clearances
Place the appliance preferably far from environments where silence is required, such as
bedrooms, meeting rooms, etc.
Evaluate the noise impact of the appliance in consideration of the installation site: avoid
installing the appliance in positions that could amplify its running noise (reverb effect).
5.3 HYDRAULIC CONNECTIONS
General indications
The hydraulic installation may be realized using pipes in stainless steel, black steel, •
copper or crosslinked polyethylene for heating/cooling applications. All water
pipes and pipe connections must be properly insulated in compliance with cur-
rent regulations to prevent heat losses and outer condensation.
To prevent icing in the primary circuit during winter time, the appliance is provided •
with antifreeze functions activating the water circulation pump of the primary cir-
cuit (if controlled by the appliance) and the burner of the appliance itself (when
necessary). It is therefore necessary to ensure a permanent supply of electricity
and gas to the appliance throughout the whole winter period. If it is not possible
to ensure a permanent supply of electricity and gas to the appliance, use glycol
antifreeze of the inhibited monoethylene type.
If glycol antifreeze is to be used (see Paragraph 5.6 FILLING OF HYDRAULIC CIR-•
CUIT → 34), DO NOT USE galvanised pipes, as they are potentially subject to corro-
sion phenomena in the presence of glycol.
If using rigid pipes, use vibration damping couplings at the water and gas connec-•
tions on the appliance's service plate to prevent vibration.
As other hydronic appliances, Robur heating and cooling systems operate with grid-wa-
ter of good quality. In order to prevent any possible problem of operation or reliability
caused by filling or top-up water, please refer to codes and norms about water treatment
for thermo-hydraulic installations in civil or industrial applications. Parameters indicated
in Table 5.1 Chemical and physical parameters of water → 29 must be complied with.