Frico PAEC4000 Série Instructions Originales page 25

Start-up (E)
When the unit is used for the first time or
after a long period of non-use, smoke or an
odour may result from dust or dirt which has
collected on the element. This is completely
normal and disappears after a short time.
Connecting the water coil (W)
The installation must be carried out by an
authorised installer.
The water coil has copper tubes with
aluminium fins and is suitable for connection
to a closed water heating system. Steel
connection pipe. The heating coil must not be
connected to a mains pressure water system
or an open water system.
Note that the unit shall be preceded by a
regulating valve, see Frico valve kit.
The water coil is connected on top of the
unit (horizontal mounting) or on the reverse
(vertical mounting) via connections DN20
(3/4''), external thread. Flexible hoses are
available as an accessory, see accessories
pages.
The connections to the heating coil must
be equipped with shut off valves (included
in Frico valve kits) to allow problem free
removal.
A vent valve should be connected at a high
point in the pipe system. Air valves are not
included.
For vertical installation and bottom water
connection it is not possible to bleed the coil
in the unit. Ensure that the water coil is filled
with water and that no air remains, prior to
commissioning. See fig. 4.
Our recommended solution is to use a
T-connection and shut off valves. Small air
bubbles may remain, but will disappear
with normal operation. NOTE: Care must be
taken when connecting the pipes. Use a pipe
wrench or a similar tool to grip the air curtain
connections to prevent straining of the
pipes and subsequent water leakage during
connection to the water supply pipe-work.
PAEC4000
Adjustment of the air curtain and airflow
The direction and speed of the airflow should
be adjusted considering the load on the
opening. Pressure forces affect the airstream
and force it inwards towards the premises
(when the premises are heated and the
outdoor air is cold).
The airstream should, therefore, be directed
outwards to withstand the load. Generally
speaking, the higher the load, the greater the
angle required.
Basic setting fan speed
The fan speed when the door is open is
set using the control. Note that the airflow
direction and the fan speed may need fine
adjustment depending on the loading of the
door.
Filter (W)
The water coil is protected against dirt and
blockage by an air filter which covers the
coil face. In environments where the filter
needs cleaning often, it is advisable to use an
external intake filter (see accessories pages),
which provides an easier maintenance, since
the unit does not need to be opened.
Service, repairs and maintenance
For all service, repair and maintenance first
carry out the following:
1. Disconnect the power supply.
2. The front is locked in the open position with
the front hatch hook, see fig 1A or removed
completely, see fig. 1B. The service hatch is
removed by loosening the screws.
3. After service, repairs and maintenance fasten
the service hatch and the front.
EN
25