Toshiba RBC-DTWP101E Manuel D'installation page 7

Branch Kit Set 1:4
CAUTION
When planning a layout for Units A and B, C and D, comply with the following:
1. The lengths after branching ( 3 + 7, 3 + 6, 2 + 5, 2 + 4) should be equal if
feasible. Install Units A and B, C and D so that the difference of the branching lengths
becomes less than 6 m if the lengths cannot be equal due to the branch pipe position.
2. Install Units A and B, C and D on the same level. If Units A and B, C and D cannot be
installed on the same level, the difference in level should be limited to 0.5 m or less.
3. Be certain to install Units A, B, C and D in the same room. Units A, B, C and D cannot be
operated independently each other.
Piping materials and sizes
Use general copper pipes with a wall thickness of 0.8 mm for Ø6.4 mm, Ø9.5 mm, and
Ø12.7 mm, with a wall thickness of 1.0 mm for Ø15.9 mm, with a wall thickness of 1.2 mm
for Ø19.1 mm, and with a wall thickness of 1.0 mm for Ø28.6 mm (half hard).
Do not use any copper pipes with a wall thickness less than these thicknesses.
Outdoor
Main pipe
unit
Gas side
224 Ø28.6
280 Ø28.6
Pipe diameter (mm)
Liquid side Gas side
2, 3: Ø15.9
Ø12.7
4, 5, 6, 7: Ø12.7
Ø12.7 2 to 7: Ø15.9
6
In parentheses ( ) are wall thickness
Branch piping
Liquid side
2, 3: Ø9.5
4, 5, 6, 7: Ø6.4
2 to 7: Ø9.5
EN
Number of
bent
portions
10 or less
10 or less
EN