Technical data
Installation, user and maintenance manual – GAHP-A
27
4   HYDRAULIC SYSTEM INSTALLATION TECHNICIAN
In this section you will 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 ap-
pliance, the professionally qualied personnel concerned are advised to read Paragraph 
2.1 WARNINGS → 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 com-
ponent to be used both on the hydraulic plant and the fuel supply plant, in order to re-
move 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 qualied personnel in accordance with the manufac-
turer’s instructions.
During the installation stage, observe the following indications:
 Check that there is an adequate mains gas supply, in accordance with the manu-•
facturer’s specications; see Table 6.1 Network gas pressure → 61 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 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 → 30).
 No obstruction or overhanging structure (protruding roofs, eaves, balconies, ledg-•
es, trees) must obstruct either the air owing from the top part of the appliance, or 
the exhaust fumes outlet.
 The appliance must be installed in such a way that the exhaust fumes 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 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 appli-•
ance 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 nal installation.










