Frico AR3215C Original Instructions Manual page 20

Unit without heating or with water heating
The electrical connection is made on the
front or on the top of the unit. Control
(230V~) should be connected to a terminal
block in the terminal box.
Unit with electrical heating
The electrical connection is made on the front
or on the top of the unit. Control (230V~) and
power supply for heat (400V3~) should be
connected to a terminal block in the terminal
box.
The cable glands used must meet the
protection class requirements. The largest
cable diameter for the terminal block is 16
mm².
See wiring diagrams.
Type Output Voltage
[kW]
Control
0
AR3210CE03 3
AR3210CE05 5
AR3210CE08 8
AR3215CE08 8
AR3215CE12 12
10
AR3220CE10
AR3220CE16 16
*) Dimensioning of external wiring shall comply
with applicable regulations and local deviations
may occur.
Start-up (E)
When the unit is used for the first time or
after a long period of disuse, smoke or odour
may result from dust or dirt that 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. 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.
Minimum
area*
[V] [mm
2
230V~ 1,5
230V~ 2,5
230V~/400V3N~ 6/1,5
400V3N~ 2,5
400V3N~ 2,5
400V3N~ 4
400V3N~ 2,5
400V3N~ 6
AR3200C
The connections to the heating coil must
be equipped with shut off valves to allow
problem free removal. Water coil is equipped
with a drain and a vent valve. The water coil
is connected via connections with dimensions
DN15 (1/2''), outside thread, inside the unit.
Knockouts are placed on the top and the side
of the unit.
NOTE: Care must be taken when
connecting the pipes. Use a wrench or similar
to hold the air curtain connections to prevent
straining of the pipes and subsequent water
leakage during connection to water supply
pipe-work.
Adjustment of the air curtain and air flow
The direction and speed of the air flow should
be adjusted considering the load on the
opening. Pressure forces affect the air stream
and make it bend inwards into the premises
]
(when the premises are heated and the
outdoor air is cold).
The air stream should therefore be directed
outwards to withstand the load. Generally
speaking, the higher the load, the greater the
angle that is needed.
Basic setting fan speed
The fan speed when the door is open is set
using the control. Note that the air flow
direction and 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 internal air filter which covers
the coil face.
Service, repairs and maintenance
For all service, repair and maintenance first
carry out the following:
1. Disconnect the power supply.
2. The service hatch is opened by loosening the
snap fixings located on the bottom of the unit
(turn 90°). The hatch must be held when the
snap fixings are loosened. See fig. 3a and 3b.
3. After service, repairs and maintenance close
the service hatch and make sure that the snap
fixings lock properly.
GB
27