Toshiba R410A - Manual (Page 55)

55
Installation reference (Example for RAV-SM801BT model)
The air supply ducting work is classified in two ways, one is branched by the round ducts, and the other is branched
by the square ducts. (Be sure to divide the air supply duct into three or more branches.)
25mm or more
Ø150mm or more
Density of thermal
insulator (glass wool) is
24 kg/m³ or equivalent.
CAUTION
Incomplete thermal insulation of the supply air flange and sealing may cause dew drops.
In case of the square duct, apply the thermal insulator
of thickness 25mm or more to the duct board. For the
thermal insulator, use high-density glass wool of
weight 64kg/m
3 .
Thermal insulator with
sticking material
(50mm-width, 6mm (t))
Aluminum tape
(Seal : 50mm-width)
Aluminum tape
(Seal : 50mm-width)
Square duct board
25mm-thickness,
64kg/m³ or equivalent
Thermal insulator
with sticking material
(50mm-width, 6mm-thickness)
Screws
(6 pieces)
Screws
(6 pieces)
Flange
(procured locally)
Indoor unit side
Thermal insulator
at indoor unit side
Stuck already at
shipment from the factory
Fit to the arro Fit to the arrow w
direction by pushing.
Fit to the arrow
direction by pushing. Fit to the arro Fit to the arrow w
direction by pushing.
Fit to the arrow
direction by pushing.
Seal/thermal insulator
with sticking material
(25mm-width, 6mm (t)) Seal/thermal insulator
with sticking material
(25mm-width, 6mm (t))
( )
( )
Thermal insulator
at indoor unit side
Stuck already at
shipment from the factory
( )
Attach by pushing to
the arrow direction.
(Outside corner direction)
( )
Thermal insulator
25mm-thickness,
24kg/m³ or equivalent
Round duct
Flange
Fit the seal/thermal insulator (25mm-width, 6mm-thickness)
by pushing to the arrow direction so that no gap can be
found between the flange and the round duct.
Fig. 2 (a) Fig. 2 (b)
25mm or more
Duct board Density of thermal
insulator (glass wool) is
64 kg/m³ or equivalent.
In case of the round duct, use the thermal insulator of
thickness 25mm or more and inner diameter 150mm
or more to the duct board.
(If the inner diameter is not enough, resistance
increase, 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 24kg/m
3 or
equivalent.
(Reference for square duct)
When using the square duct, change the type of the air
supply flange from round type to square flange at the
local site.
Connecting method of the duct
1. Supply air side