Daikin VAM-GVJU Specifications download pdf (Page 21)

Installation Manual EDUS711116

20 VAM-GVJU

3P034928-7Q

5 English

1. Hanger bracket

2. Nut

3. Washer

4. Double nuts

6. DUCT CONNECTION

1. Do not connect the ducts as shown below.

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).)

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)

(1) Extreme bend (2) Multi bend (4) a bend right

next to the

outlet

(Do not reduce the duct

diameter halfway.)

(3) Reduce the

diameter of the

duct to be

connected.

(Do not bend the

duct over 90˚)

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Daikin VAM-GVJU Specifications Page 21

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