Immergas 3.021525 Instruction And Warning Book page 13

IE
2
INSTALLATION.
The heater has been designed for indoor installation in the home in
an explosion risk-free area and, if possible, protected from sub-zero
temperatures. This device is not sealed against water splashes and
must not be installed in damp surroundings, such as wash houses
or laundry rooms.
2.1 HYDRAULIC CONNECTIONS.
The heater must be installed in a position, always downstream of the
PAC (refer to assembly layout drawing, Fig. 2). It will not operate
without a water supply, (risk of boiling). If the heater is installed
directly in the water circuit (water flow guaranteed by the PAC cir-
culation pump), the PAC system controls the risk of low water flow.
If the heater is installed in a separate heating circuit, the installer
must ensure that an adequate water flow is guaranteed.
If water cut-off devices, such as valves, are installed between the
PAC and the heater, meaning that it can be hydraulically isolated,
a safety valve must be also installed. (Refer to assembly layout
drawing, Fig. 2).
2.2 ELECTRICAL CONNECTIONS.
The power supply must pass through a circuit breaker or fuse holder
provided by the installer. fuse sizes are indicated in the table in
Parag. 2.12 Technical Data.
the electrical installation and wiring of the heater must comply with
current regulations in the country of installation.
Attention: the appliance must be earthed to avoid any possible
danger caused by faulty insulation.
Attention: make sure that the ground cable is connected properly
before closing the heater cover.
2.3 COMMISSIONING.
Fill the circuit water and check that it is fully watertight.
Bleed the entire heating circuit and check that an adequate water
flow is present before switching on the heating resistances.
This heater is equipped with a dual safety thermostat: automatic
reset at 70° C and manual reset at 83° C.
2.4 OPERATING MODES (PARAMETERS TO BE SET ON
THE HEAT PUMP).
Boost mode.
The aim is to maintain occupier comfort when the Heat Pump lacks
sufficient power, while favouring operation of the thermodynamic
section for optimal performance.
The resistances are only activated if the Heat Pump detects a lack
of capacity from the thermodynamic section (via measurement of
water temperature).
To configure the intervention of the supplementary heater refer to
the heat pump documentation.
13