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12 - FACTORY OPTIONS AND ACCESSORIES
12.1 Filters
All model types can substitute the fi ltering mesh that the units
include regularly with G4 rating, mounted on the same frames.
Creased opacimetric fi lters classifi ed M6 to F9, as well as double
stage F+F creased opacimetric fi lters, can also be added.
Creased opacimetric fi lters
Note: The access panel to the fi lters is fi tted with hinges +
quarter-turn latches of stainless steel and triangular insert 8 mm.
● Closing mode:
First rotate 90º (anti-clockwise): closing brings
the latch to the locked position. The door
cannot be opened.
12.2 Hot water coil
● Hot water coil with a three-way valve managed by the
electronic control of the unit. The water coil could be activated
in the following cases:
- As a support in HEATING mode, as the fi rst stage or
subsequently with the input of all the available compressors.
- As support in HEATING mode in accordance with the outlet
temperature.
- During the defrosting operation if selected as support.
- With the unit running or shut down if an anti-freeze alarm
is triggered.
- With the unit stopped when the outdoor temperature drops
below 4ºC. In this case the circulation pump of the water
circuit will be connected.
- As support in COOLING mode in accordance with the return
and the oultlet temperatures.
The pump of the water circuit has to be activated whenever
the 3-way valve is switched on. It is the installer's responsibility
to connect the pump to the electronic control, except with the
factory-installed GREAT COLD option. Consult the electrical
scheme supplied with the unit.
Note: Refer to the operation mode of the pump with the
GREAT COLD option in the chapter "Safety elements".
22
Gravimetric fi lters
● Assembly inside the unit. The inlet/outlet connections of the
hot water coil are located inside the unit. The connection can
be established via the unit base using fl exible piping or via
the side panel.
In the diagram below the position of the sheet metal precuts
is shown on the side panel.
1
2
C
A
B
50EN/EH
415 / 420 / 480 / 485 / 540 / 600
650 / 720 / 840 / 960
1100 / 1200
● Coil fi lling:
- The coil fi lling must be made with the bleeder valve open
until water runs through it, which is when it is time to close it.
- Cut off the water supply and let the bubbles generated go
up to the highest coil point, which is the same as the bleeder
valve, and eliminate by opening the purger.
- Pour more water into the circuit and repeat the previous
steps.
- Activate the water pump (to be foreseen by the installer)
and repeat the previous steps until no air noises are heard
in the piping, which is when the fi lling of the installation will
have been fi nished successfully.
● In case of long unit stops, and forcibly if they happen in the
winter season, the coil must be emptied.
● To prevent the water from freezing, with this option the unit
always has an anti-freezing thermostat. Add glycol to the water
if necessary. With the GREAT COLD option, it is necessary
to consult for glycol percentages higher than 20%.
● The direction of the water fl ow must be correct and so the
following indications must be observed:
HOT WATER COIL
BATTERIE D'APPOINT
BATERÍA DE APOYO
Note: The hot water coil is not compatible with the stop-drop in
the indoor air coil.
LEGEND
Water outlet
1
Water inlet
2
A
B
C
Ø hydraulic
(mm)
(mm)
(mm)
connections: I/O
302
250
222
2"
302
250
222
2"
302
250
222
2 1/2"
HOT WATER COIL
BATTERIE D'APPOINT
BATERÍA DE APOYO
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