HP069. If the flow rate is too low, the heat pump may shut itself down for
its own protection; the heating, cooling and domestic hot water functions
are then no longer guaranteed.
Important
To ensure maintenance and accessibility to the various
components in the module, the hydraulic pipes have been
purposely designed with a degree of play. This play is necessary
and controlled. This pipe design guarantees the tightness of the
product.
1. Make the hydraulic connections between the indoor module, the
heating circuit and the boiler if there is hydraulic back-up
Warning
To ensure optimum operation of the back-up boiler, the flow rate
of the boiler must always be higher than that of the installation.
2. Install a 500 µm filter on the heating return of the indoor module
(mandatory): Optional package .
Caution
Respect the mounting direction of the filter.
Fit drainage valves between the indoor module and the heating
circuit.
3. Install an automatic air vent at the highest point on the heating circuit.
4. Calculate the volume of water in the heating circuit and check the
volume of the appropriate expansion vessel using DTU65–11. Use the
maximum temperature of the circuit in heating mode or, failing that, a
minimum of 55 °C. If the volume of the integrated 8-litre expansion
vessel is not sufficient, add an external vessel to the heating circuit.
5. Connect the heating return for the indoor module.
6. Connect the heating flow for the indoor module.
Caution
When connecting the heating circuit, hold the connection at the
indoor module end with a spanner to avoid piercing the pipe inside
the appliance.
Caution
In case of a direct circuit with radiators fitted with thermostatic
valves, install a differential valve to ensure flow. In the case of
standard valves, leave one radiator permanently open to allow
water to circulate and to ensure a minimum flow.
6.5.3
Connecting the safety valve drain pipe
1. Remove the front panel by pulling firmly upwards.
Fig.36
Removing the front panel
MW-3000539-01
1
6 Installation
40
AWHP-2 PBS-i
7706696 - v04 - 11102018