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4
HYDRAULIC SYSTEM INSTALLATION TECHNICIAN
In this section you will fi nd all the instructions necessary for installing the appliance from
a hydraulic viewpoint.
Before proceeding with operations to create the hydraulic and gas supply plant of the
appliance, the professionally qualifi ed personnel concerned are advised to read Section
2.1 WARNINGS on page 7: it provides important information regarding installation safety
and references to current regulations.
4.1
GENERAL INSTALLATION PRINCIPLES
Prior to installation, carry out careful internal cleaning of all pipes and every other
component to be used both on the hydraulic circuit and the gas supply circuit, in order
to remove any residues that may compromise operation of the appliance.
Installation of the appliance must be carried out in compliance with current regulations
regarding design, installation and maintenance of heating and cooling plants and must be
undertaken by professionally qualifi ed personnel in accordance with the manufacturer's
instructions.
During the installation stage, observe the following indications:
• Check that there is an adequate mains gas supply, in accordance with the manufacturer's
specifi cations; see Table 6.1 Network gas pressure on page 59 for the correct supply
pressures.
• The appliance must be installed outdoors, located in an area in which air circulates
naturally and which does not require any particular protection from the weather. In
no case must the appliance be installed inside a room.
• The front of the appliance must be at least 80 cm away from walls or other fi xed
constructions; the right and left sides must have a minimum clearance of 45 cm; the
minimum rear clearance from walls is 60 cm. (see Figure 4.2 Clearances on page 28).
• No obstruction or overhanging structure (protruding roofs, eaves, balconies, ledges,
trees) must obstruct either the air fl owing from the top part of the appliance, or the
exhaust fl ue outlet.
• The appliance must be installed in such a way that the exhaust fl ue outlet is not
in the immediate vicinity of any external air inlets of a building. Respect current
regulations regarding the exhaust fumes outlet.
• Do not install the appliance close to fl ues, chimneys or other similar structures,
in order to prevent hot or polluted air from being drawn by the fan through the
condenser. In order to function correctly the appliance must use clean air from the
environment.
• If it is necessary to install the appliance near buildings, make sure that the appliance
is not in the line of water dripping from guttering or similar.
• Fit a gas cock on the gas supply line.
• Fit antivibration joints on the hydraulic connections.
4.2
POSITION OF THE APPLIANCE
Lifting the appliance and placing it in position
The appliance must be kept in the same packing in which it left the factory while it is
moved on site.
Packing must only be removed upon fi nal installation.
Installation, user and maintenance manual – GAHP-A
25
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