Condensate Drain; Filling The System; Electrical Connections - Baxi PBM-i 20 Manual Del Usuario

WATER CONNECTIONS

Condensate drain

In heating mode the unit produces a significant quantity of
condensate, which must be suitably drained.
Proceed as follows:
• Connect the unit condensate drain
• Make sure the drain hose has a incline of at least 2 cm/m,
without obstructions or choking.
• Connect the condensate drain hose to a rainwater drain.
Do not connect to the sewage system as odours may be
sucked up if the water in the drain trap evaporates.
• After connecting, check correct drainage of the conden-
sate by pouring water into the pan.
• If necessary, suitably insulate the condensate drain hose.

FILLING THE SYSTEM

- Before starting to fill, place the unit mains
ON
switch QF1 in the OFF position.
- Before filling, check that the system drain
OFF valve is closed.
- Open all system and terminal air vents.
- Open system shut off valves.
- Start filling by slowly opening the system water fill valve
outside the unit.
- When water begins to leak out of the terminal air vent
valves, close them and continue filling until the pressure
gauge indicates a pressure of 1.5 bar.

ELECTRICAL CONNECTIONS

The heat pumps must be installed downstream of a circuit
breaker (QF1, see wiring diagram), as required by the stan-
dards in force in the country where the unit is installed. Con-
nection to the mains power supply and connection of the
flow switch to the corresponding terminals must be per-
formed by authorised personnel in compliance with the stan-
dards in force.
For all electrical work, refer to the wiring diagrams on the
unit.
It is also recommended to check that:
- The characteristics of the mains electricity supply are ade-
quate for the power ratings indicated in the electrical spec-
ifications below, also bearing in mind the possible use of
other equipment at the same time.
Power to the unit must be turned on only after installa-
tion work (plumbing and electrical) has been completed.
All electrical connections must be carried out by quali-
fied personnel in accordance with legislation in force in
the country concerned
Respect instructions for connecting phase, neutral and
earth conductors..
The power line should be fitted upstream with a suitable
device to protect against short-circuits and leakage to
earth, isolating the installation from other equipment.
• Condensate drainage must not cause problems to objects
or people.
• If the outside air temperature is less than 0°C, the conden-
sate may freeze.
The unit comes with frost protection for the condensate col-
lection basin inside the unit.
Use hot wires on the condensate drain hose downstream of
the unit to protect against frost.
The system must be filled to a pressure of between 1
and 2 bars.
It is recommended that this operation be repeated after
the unit has been operating for a number of hours. The
pressure in the system should be checked regularly and
if it drops below 1 bar, the water content should be
topped-up.
Check the tightness of the joints.
Voltage must be within a tolerance of ±10% of the rated
power supply voltage for the unit (for three phase units,
the unbalance between the phases must not exceed
32%).
If these parameters are not respected, contact the elec-
tricity supply company.
For electrical connections, use double insulation cable
in conformity with legislation in force in the country con-
cerned..
A thermal overload switch and a lockable mains dis-
connect switch, in compliance with the CEI-EN stan-
dards (contact opening of at least 3mm), with ade-
quate switching and residual current protection
capacity based on the electrical data table shown
below, must be installed as near as possible to the
appliance.
An efficient earth connection is obligatory.
The manufacturer cannot be held liable for any damage
caused by the failure to correctly earth the unit.
In the case of three phase units, ensure the phases
are connected correctly.
Do not use water pipes to earth the unit.
U I A
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EN PBM 20÷40 15