Tolerance Of Pipe Length And Pipe Head - Toshiba RAV-SM402MUT-E Service Manual

6-6. Tolerance of Pipe Length and Pipe Head

n Twin system
Pipe length
(one way)
Refrigerant pipe
specification
Height
difference
When planning a layout for Units A and B, comply with the following:
1. The lengths after branching ("a" and "b") should be equal if feasible.
Install Units A and B so that the difference of the branching lengths becomes less than 10m if the lengths
cannot be equal due to the branch pipe position.
2. Install Units A and B on the same level.
If Units A and B cannot be installed on the same level, the difference in level should be limited to 0.5m or less.
3. Be certain to install Units A and B in the same room.
Units A and B cannot be operated independently each other.
Total length (L + a or L + b)
Branch pipe length (a, b)
Maximum difference between indoor units
(b – a, or a - b)
Between indoor units ( ∆ h)
Between indoor unit
and outdoor unit
Number of bent portions
Indoor unit B
Branch pipe
Outdoor unit
When outdoor unit heigher (H)
When outdoor unit lower
Indoor unit A
Distributor
b a
Branch pipe
L
Main pipe
CAUTION
– 32 –
50 m
15 m
10 m
0.5 m
30 m
(H) 30 m
10 m or less
∆h
H