Installation manual
3
250FC
Total Heat Exchanger
HRV (Heat Reclaim Ventilation)
4P415946-1 – 2015.08
Method of installation
■
Installation of duct connecting flanges
Attach the provided duct connecting flanges using screws
(accessories).
Installation of HRV
■
Install the anchor bolt (M10 to 12) in advance.
Pass the metal suspension bracket through the anchor bolt and
secure the anchor bolt with washer and nut.
(Before installation, check for foreign objects such as vinyl and
paper remaining inside the fan housing.)
■
The metal suspension bracket is fitted on top of the standard
unit.
If the anchor bolt is long, install it on the bottom of the unit.
(Be sure to screw in the removed mounting screw on top to
prevent air leakage.)
Install the duct caution name plate property on the indoor side
(SA·RA) and outdoor side (EA·OA).
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 aluminium tape round the section
after the duct connecting flange and the duct are connected.
3
Install the opening of the indoor air intake as far as from the
opening of the exhaust suction.
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.
1
Screw (accessories)
2
Duct connecting flange (accessories)
screws provided
screws provided
VAM150
16
VAM650
24
VAM250
16
VAM800
24
VAM350
16
VAM1000
24
VAM500
16
VAM1500
24
VAM2000
24
1
Ceiling hook
2
Nut
3
Washer
4
Double nuts
NOTE
Remove the two fixing metals for transportation if it
prevents installation work. (Be sure to screw in the
removed mounting screw on the body side to prevent
air leakage.)
1
2
1
2
3
4
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.
1
Aluminium tape (field supply)
2
Insulation material (field supply)
3
Duct connecting flange (option)
4
Slope over 1/50
HRV
1
2
3
1
4
Summary of Contents for VAM250FC
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