Mitsubishi Electric Lossnay LGH-150RVXT-E Instrucciones De Instalación página 6

Installation method (continued)
2. Preparing the anchor bolts (M12)
Mount the washers (outer diameter of >24 mm) and nuts onto the
pre-recessed anchor bolts (M12), as shown in the figure below.
Anchor bolt (M12)
Nut
Washer
Nut
[When using (customer-prepared) vibration isolation rubber]
When using (customer-prepared) vibration isolation rubber, there
is a possibility of this causing a decrease in strength, so we
recommend the following type of construction.
Anchor bolt (M12)
Nut
Washer
Vibration isolation rubber
Nut
3. Mounting Lossnay unit
(1) Hang the ceiling suspension fixtures on the anchor bolts and
adjust in such a way that Lossnay unit is level.
(2) Tighten up securely using double nuts.
CAUTION
• When suspending Lossnay unit from the ceiling, do not handle
it in such a way that force will be applied to the control box.
• Install the anchor bolts to ensure the product's weight or
earthquake load. (Correctly rated wire/chain may also be used)
4. Connecting the ducts
(1) Fasten the duct securely to the duct connecting flange, and
wrap aluminium tape (field supply) around the joints so that
there is no air leakage.
(2) Suspend the ducts from the ceiling so that their weight will not
be applied to the Lossnay unit.
(3) The two outdoor ducts must be covered with heat-insulating
material in order to prevent condensation from forming.
CAUTION
USE TWO NUTS
CAUTION
USE TWO NUTS
Anchor bolt
(M12)
Nut
Washer
Ceiling suspension
fixture
Washer
Nut
250 x 750 duct flanges
Room Side
φ250 duct flanges
Room Side
CAUTION
• When on-site commissioning is planned, a straight duct
length more than 10xD (D=duct diameter or equivalent)
from the source of turbulence like bends, contractions and
dampers etc, to the measurement point is recommended for
correct measurement.
In the United Kingdam, on-site measurment should
therefore be measured in accordance with BSRIA guideline
(Commissioning Air System. Application procedures for
buildings AG3/89.3(2001))
• Before attaching the ducts, check that no (debris or any other)
foreign matter (scraps of paper, vinyl, etc.) has found its way
inside the ducts.
• Do not touch the damper plate inside Lossnay unit when
connecting the ducts. (When the rectangular duct is secured
with screws, check that the screws are not collided to the
damper plate.)
• If it is expected that the ambient temperature around the place
where the Lossnay unit is installed will be high during the
summer air conditioning season, it is recommended that the
indoor duct work be covered with insulation material.
• Do not place the auxiliary blower to the exhaust side air
passage.
Do not carry out the following types of duct construction. (Doing so
could cause a drop in the air volume and generate abnormal noises.)
• Extremely • Multiple bends
sharp bends
Duct
Outdoor Side
Aluminium tape
Heat-insulating material
Lossnay
unit
Outdoor duct
Duct connecting flange
Duct
Outdoor Side
Taping
Aluminium tape
Heat-insulating material
Lossnay
unit
Outdoor duct
Duct connecting flange
• Bends right next • Extreme reduction in
to the outlet the diameter of the
connected ducts
Eng-5