VAM350~2000FC
Total Heat Exchanger
HRV (Heat Reclaim Ventilation)
4P415947-1A – 2017.08
Installation manual
4
Installation in positions other than horizontal are allowed under the
following conditions:
There shall be no danger of water entering the control box
(condensation, nearby piping, etc.).
The unit shall be sufficiently fixated.
External switchbox wiring shall point downwards.
Fan shaft has to remain horizontally.
Duct connection
Do not connect the ducts as follows
1
The minimal radius of bends for flexible ducts are as follows:
300 mm duct: 200 mm diameter
375 mm duct: 250 mm diameter
2
To prevent air leakage, wind aluminum tape round the section
after the duct connecting flange and the duct are connected.
3
Install the opening of the indoor air intake (SA) as far as possible
from the opening of the exhaust suction (RA).
4
Use the duct applicable to the model of unit used (Refer to the
outline drawing).
5
Install the two outdoor ducts with down slope (slope of 1/50 or
more) to prevent entry of rain water. Also, provide insulation for
both ducts to prevent dew formation. (Material: Glass wool of
25 mm thick)
6
If the level of temperature and humidity inside the ceiling is
always high, install a ventilation equipment inside the ceiling.
7
Insulate the duct and the wall electrically when a metal duct is to
be penetrated through the metal lattice and wire lattice or metal
lining of a wooden structure wall.
VAM350F, VAM500F, VAM650F, VAM800F, VAM1000F
VAM1500F, VAM2000F
Use Ø250 mm round ducts for the SA (supply air) and RA
(return air) sides
1.
Loosen the 12 screws off the SA (supply air) side and remove
the connection chamber. Be sure to tighten up these screws
back in position in order not to allow any air leak from the unit.
2.
Fix the duct connecting flanges (option) with their accompanying
12 screws.
Introducing the silencers and other options.
This model handles a high air flow rate.
To reduce the blow-out noise, some optional attachments are
available: silencer, flexible duct, thin air intake/exhaust grille, etc.
1.
Remove the connection chamber off the SA (supply air) side and
attach the upper and lower silencers.
2.
Now fix the duct connecting flanges (option) and connect the
Ø250 mm flexible ducts.
Extreme bend
Do not bend the duct over 90°
Multi bend
Reduce the diameter of the duct to be connected.
Do not reduce the duct diameter halfway.
HRV
1
2
3
1
4
1
Aluminium tape (field supply)
2
Insulation material (field supply)
3
Duct connecting flange (option)
4
Slope over 1/50
5
Duct connecting flange (option)
6
SA (Supply air)
7
RA (Return air)
8
Connecting chamber
9
Silencer (option)
4
2
1
5
HRV
3
6
8
7
7
8
9
6
3
