Duct Connection - Daikin VAM-GVJU Manual

Installation Manual
<VAM1200GVJU>
1
1. Hanger bracket
2. Nut
3. Washer
4. Double nuts
6.

DUCT CONNECTION

<Perform duct work by following instructions below>
1. Do not connect the ducts as shown below.
(1) Extreme bend (2) Multi bend
(Do not bend the
duct over 90˚)
2. The minimum radius of bends for flexible ducts are as fol-
lows.
4 in. diameter duct : 4 in.
6 in. diameter duct : 6 in.
8 in. diameter duct : 12 in.
10 in. diameter duct : 15 in.
3. To prevent air leakage, wind aluminum tape round the sec-
tion after the duct connecting flange and the duct are con-
nected. (Refer to the figure below.)
4. To prevent air leakage, install the opening of the indoor air
intake as far as from the opening of the exhaust suction.
5. Use the duct applicable to the unit used (Refer to figure 1.)
6. Install the two outdoor ducts with down slope (slope of
1/30 or more) to prevent entry of rain water. Also, provide
insulation for both ducts to prevent dew formation.
(Material : Glass wool of 1 in. thick)
If the unit is going to be used in cold places where the out-
side temperature reaches 14°F or below, insulate the
indoor ducts as well.
7. If the level of temperature and humidity inside the ceiling is
always high, install a ventilation equipment inside the ceil-
ing.
8. 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.
9. Using flexible or silent ducts can be effective in reducing
the air discharge sound of the supply air to inside (SA).
Select materials keeping in mind the fan speed and operat-
ing sound of the unit. Consult your Daikin dealer for selec-
tion.
10. Set the pitch between the exhaust air outlet (EA) and the
outdoor air intake (OA) to at least 3 times the duct diame-
ter.
11. Do not use a bent cap or a round hood as the outdoor
hood if they might get rained on directly. (We recommend
using a deep hood (field supply).)
5
20
2
3
4
(3) Reduce the (4) a bend right
diameter of the next to the
duct to be outlet
connected.
(Do not reduce the duct
diameter halfway.)
12. When using a deep hood, make sure the duct from the
deep hood (outer wall) to the unit is at least 40 in. long.
Select the proper materials taking fan speed and noise levels
into consideration before installation.
1. Aluminum tape (field supply)
2. Insulation material (field supply)
3. Duct connecting flange (accessory)
4. Slope over 1/30
5. OA (Outdoor air) Outdoor air from outside
6. EA (Exhaust air to outside)
7. Suspension bolt (field supply)
8. Suspension bracket for absorbing vibration
(field supply)
EDUS711116
English
3P034928-7Q
VAM-GVJU