Toshiba RAS-M10GDCV-E Installation Manual page 13

Installation reference
The air supply ducting work is classified into two ways, one is branched by the square ducts, and the other is branched by the round
ducts. (Be sure to divide the air supply duct into three or more branches.)
Square duct
In case of using the square duct, apply the thermal insulator of thickness by 25 mm or more to the duct board. For the thermal
insulator, use high-density glass wool of weight by 64kg/m
Round duct
In case of using the round duct, use the thermal insulator of thickness by 25 mm or more and inner diameter by 150 mm or more to
the duct board. (If the inner diameter is not enough, resistance generates, as the result, air does not flow smoothly and loss of the
static pressure increases.) For the thermal insulator, use high-density glass wool of weight by 24 kg/m
Connecting method of the duct
1. Supply air side
1. Using 6 screws, mount the flange to the supply air port of the indoor unit. (Fig. 1)
2. Make the square duct according to inner dimension of the flange. (A x B)
Use a glass wool board with inside/outside finishing by 25 mm-thickness and 64 kg/m
3. Connect the flange and each type of duct. (Fig. 2)
CAUTION
Incomplete thermal insulation of the supply air flange and sealing may occur dewing resulted in falling of water drop.
3
.
Fig. 1
Duct board
25 mm or more
25 mm or more
φ150 mm or more
3
-density.
Aluminum tape
(50 mm-width)
25 mm
Square
duct board
(25 mm)
9
Weight of thermal insulator
3
(glass wool) is 64 kg/m or
equivalent.
3
or equivalent.
Weight of thermal
insulator (glass wool) is
3
24 kg/m or equivalent.
Thermal insulator
(50 mm (w), 6 mm (t))
Seal
(Thermal insulator:
25 mm (w), 6 mm (t))
End
Indoor unit
Fig. 2
EN