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The ventilation unit is designed for installation in warm indoor spaces
and must not be used if the room temperature is below + 5 °C, due
to the risk of freezing in the models equipped with a water-heated
air heater. A clear service space of 1000 mm must be provided in
front of the unit.
1. The ILTO 1000 ventilation unit can be installed in building-service
spaces, sculleries, workrooms or equivalent spaces, either on mounting
brackets secured to the wall, on a support stand available as extra
equipment or on a support stand built at the site. The room must
have a drain gulley. The vertical studs in the wall structure must allow
a distance of 200 mm between the fixing points. The ventilation unit
must not be secured to building elements that border on bedrooms.
2. Secure the mounting brackets to the wall. Insert the ILTO unit
between the mounting brackets and fix it in position with self-tapping
screws through the holes in the sides of the brackets.
3. The condensation water should be conveyed to a drain gulley via
a condensate discharge hose included in the supply or by means of
a hose or pipe having an inner diameter of at least 20 mm. Install
the water trap, having a minimum permissible water rise of 80 mm,
in the condensate discharge hose/pipe. A water trap can also be
fabricated by bending a copper tube into an S shape. Connect the
hose to a condensate drain outlet in the bottom of the ILTO unit.
4. Install the air ducts in the attic or in an inner space (above a
suspended ceiling). Install effective sound attenuators in the ducts
for supply air and extract air between the unit and the air diffus-
ers/valves. Position the sound attenuators as close as possible to
the ventilation unit. In colder spaces, the ducts must be insulated
with 100 mm thick mineral wool or similar insulation. The outside
air supplied to the ventilation unit can be admitted either below a
roof eave or through an external wall, preferably on the north side
of the building. Run the exhaust air duct out through the roof. If the
supply air and extract air ducts are arranged in warm spaces they
must be insulated with thermal insulation.
5. The circuit breaker on the front panel of the unit serves as a
service switch.
N.B.! Before beginning any service work, you must isolate the
ventilation unit from the mains supply by opening the main switch
wired to the final circuit and wait five minutes, until the fans have
stopped and air heaters, if fitted, have had time to cool down.
6. Only a trained plumber shall be allowed to connect the Econo
model air heater for hot water. The pipework is located behind a
plate secured by bolts. The plumbing work can be made simpler
by backing off the bolts that secure the air heater to its frame
and slightly withdrawing the air heater. The inlet flow water pipe
is connected via 3/8” female threads on the thermostat, whereas
the ball valve has a 15 mm clamp connection. An air bleed cock
should be mounted at the highest point of the return pipe. When
the system is filled and vented, check that there is adequate water
flow through the air heater.
Instructions for installation
Inlet flow water, 3/8”
innerdiam
Recirculated water
∅
15
Condensation
water outlet
Mounting bracket
for securing unit
to wall
Support stand
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