ECOFOREST ecoGEO HP Serie Manuel D'installation page 38

Installation instructions
Follow the instructions below to connect the heating / cooling circuit.

Install a particulate filter in the return pipe with a mesh size no greater than 1 mm. It is recommended to install shut off
valves immediately before and after the filter to make it easier to clean or replace.

Install a safety unit (expansion vessel + safety valve) in the suction part of the circulator pump to protect the circuit from
overpressure.

Adjust the pressure of the expansion valve to make sure that the circuit remains pressurised at all points.

Install a check valve at the tap water inlet to prevent the possible return of hot water from the DHW storage tank to the
main network.

If necessary, install a safety unit (expansion vessel + safety valve) at the tap water inlet to prevent overpressure in the DHW
storage tank.

If there is a risk of scalding, a thermostatic mixing valve should be installed at the DHW outlet.

If the maximum system pressure in the mains can exceed 5 bar, it is recommended to install a pressure reducing valve in
the mains inlet to prevent overpressure in the DHW storage tank.
4. Filling and discharging the circuits

During filling work on the hydraulic circuits, take special care to prevent liquid from spilling on the
internal electrical heat pump components, which could cause personal injury due to electrocution
DANGER!
and/or poor equipment operation.
4.1. Filling the production circuit (heating, cooling, DHW and pool)
Take the following steps to fill the circuit.
1. Open all the valves of the production circuits.
2. Fill the circuit through the filling valve until the target pressure is reached. Make sure that the pressure does not exceed 3
bar (pressure gauge) under any circumstance.
3. Remove the air from the circuit using the traps installed for that purpose.
4. Check the circuit pressure and repeat the filling process if necessary.
4.2. Filling the brine circuit
The brine system temperature can fall below 0°C, so a mixture of water/antifreeze must be used. It is recommended to use
propylene glycol as an antifreeze additive or ethylene glycol with a corrosion inhibitor. Please check local regulations before using
any type of antifreeze mixture.
When preparing the mixture, be careful to calculate the volume of antifreeze necessary to reach the desired degree of antifreeze
protection. It is recommended to use a mixture with a freezing point at least 10ºC below the nominal minimum temperature.
Brine circuit filling should be done with the filling unit installed in the return pipe and an external circulation pump, taking the
following steps.
All manuals and user guides at all-guides.com
37
Installer manual ecoGEO HP