REC Indovent AB, Box 37, SE-431 21 Mölndal, Sweden
|
+46-31-675500
|
www.rec-indovent.se
INSTALLATION
Air Handling Unit RT 250/400S-EC-RS
4
Temperature sensors - location
Sensors for outdoor air, exhaust air and extract air
are already mounted in the AHU's respective air
ducts. They are also electrically connected to the
control system.
Should the unit be equipped with an after-heater,
the sensor for frost protection is mounted and
connected.
The sensor for supply air is just electrically
connected upon delivery. It should be placed in the
supply air duct, at least 0,6 m from the heater to
avoid direct heat radiation, and after the first bend if
possible, where the temperature is more
homogeneous.
NOTE! Seal the lead-through carefully.
If a room sensor is used, it should be placed approx.
1,8 m above floor level in the living room,
prefereably on an inner wall.
Insulation
Ourdoor air and extract air ducts in heated spaces
must be insulated against condensation along their
entire length, using an insulation sleeve with
minimum 30 mm insulation. The diffusion barriers
are sealed using ventilation tape.
Supply air and exhaust air ducts in warm rooms do
not need to be insulated against condensation,
however, heat insulation may be appropriate. This
should be decided in each individual case.
Supply air and exhaust air ducts located in cold or
unheated rooms should be insulated against frost.
If blanket insulation is used, 2 layers with
overlapping joints should be achieved, with a
minimum insulating thickness of 120 mm.
If loose-fill insulation is being laid, the layer covering
the ducts must be at least 150 mm.
Duct cover for AHU top
The lacquered, 2-piece cover hides the ducts at the
top of the Temovex unit. The cover is telescopic and
will fit ceiling heights between 2,30 - 2,70 m. We
recommend a gap of 5 mm between ceiling and
duct cover to avoid any transfer of vibrations.
1.
Measure the
distance from the
top of the unit
(without duct
cover) to the
ceiling. Assemble
the two pieces on
a flat surface/floor,
and ensure that
the height will
allow a gap of
approx. 5 mm to
the ceiling. Use
the enclosed 4 self-tapping screws to make the
holes in the upper (smaller) cover plate. Use
the 4 white screws to join the two cover plates.
2.
Put the duct cover on top of the unit, placing the
screw-heads in the
"key" holes. Fix the
cover onto the unit
by sliding it
backwards some 5
mm (see picture).
If the duct cover is
mounted onto an
existing
unit, the
pop rivets at the unit top have to be
replaced by screws.
3. Whenever you need access to the
upper part of the Temovex unit, the
duct cover is lifted off in one piece
(point 2 above, but reverse order)
Air diffusers
Supply air diffusers are normally installed in rooms
where people spend much time, such as bedrooms
and living room.
Exhaust air diffusers
are normally installed in "damp
and smelly" rooms, for example bathroom, laundry
etc.
Both supply and exhaust air valves can be mounted
on the wall or in the ceiling. They should be placed
where they can easily be demounted for cleaning,
service or inspection of the duct system.
Transmitted air between rooms
To facilitate the circulation of air in the home, supply
air from rooms with such valves must be given the
chance to move to rooms with exhaust air valves.
Use doors with an air transfer slit, or doors without
door sill (minimum 70 cm
2
free area/exhaust air
valve).
Alternatively, wall mounted transfer air grilles can be
used.
Stove/fireplace
Most modern stoves have a separate outdoor air
connection which provides combustion air to the
stove. If this is not available/possible, a separate
outdoor air device should be mounted. The stove
consumes some 150-300 m
3
/h.
To facilitate the lighting of fires (to start with, the
stove door should be left ajar) an option is to
provide the Temovex AHU with a "stove" button.
Kitchen flue
The cooker fan is fitted with a separate fireproof
spiral duct. The extract air is fed out via a roof
hood.
Use an approved duct and 2 speed clamps to
connect the cooker hood/kitchen fan to the kitchen
flue.
Power connection
The AHU is provided with a grounded plug.
Connect the plug to an earthed 1-phase socket
(230 VAC / 10 A).
Connection at the top of the unit.
