Hydraulic Connections - Ferroli EGEA TECH 90 LT User, Installation, And Maintenance Manual

• It does not weigh down on the equipment.
• It allows maintenance operations.
• It is adequately protected to prevent the accidental intrusion
of materials inside the equipment.
• The connection to the outside must be done with suitable,
non-flammable piping.
• The total equivalent length of the extraction pipes plus the
delivery, including grilles, must not exceed 12 m.
The table gives the characteristic data of commercial ducting
components with reference to nominal air flows and diameters
125 mm.
Smooth
Data
straight pipe
Type
Effective
1
length
Equivalent
1
length
• While operating, the heat pump tends to lower the tempera-
ture of the room if the air is not ducted outside.
• A suitable protection grille must be fitted during installation
near the external air exhaust pipe, to prevent foreign bodies
from getting inside the device. To ensure maximum product
performance, the grille must be selected from those with low
pressure loss.
• To prevent the formation of condensate: isolate the air ex-
haust pipes and the ducted air cover attachments with a va-
pour proof thermal coating of a suitable thickness.
• If necessary, install mufflers to prevent noise due to the air
flow. Fit the pipes, wall entries and connectors to the heat
pump systems with vibration damping.
Operating
hearth (e.g. open fireplace) and
the heat pump at the same time
ATTENTION
will cause a dangerous drop in
pressure in the room.
EN
152
Smooth 90 °
Grille
curve
\ \
2 2
an open-chamber
cod. 3540000400 - Rev. 03 - 09/2023
EGEA TECH
The negative pressure can cause the return of
exhaust gases into the room.
• Do not operate the heat pump together with
an open fireplace.
• Only operate fireplaces with airtight cham-
bers (approved) with separate combustion
air ducting.
• Keep the doors of boiler rooms sealed and
closed so that the combustion air is not
drawn from living areas.
6.7

HYDRAULIC CONNECTIONS

UM
• Connect the cold water supply line and the outlet line to the
appropriate connection points (fig. 54).
m
m
The table below shows the characteristics of the connection
points.
Ref. Model
1
Cold water Inlet
2
Hot water outlet
6
Condensate drain (*)
ATTENTION
90 LT - 120 LT
2 1
6
fig. 54
90 LT - 120 LT
1/2"G
1/2"G
16
For the correct operation of the
device, the inlet water pressure
must be:
- maximum 0.7 MPa (7 bar);
- minimum 0.15 MPa (1.5 bar).
UM
"
"
mm