Sanyo SGP-M2 Manuel D'installation page 6

1. The precautions for use of the separately purchased branch tube (
sure to refer to them.
2. When using a T-tee branch tube (provided by installer) (only with L3 at 2 m or less), the main tubing must be either level
or vertical. The openings of each branch tube must be at a raised angle from the ground when the main tubing is level.
The openings can be set at any angle when the main tubing is vertical, but be sure to curve a portion of the connected
tubing upward. Always close weld the end point of the T-tee tubing. In addition, pay special attention to the insertion
dimensions for each connected tube so that refrigerant fl ow is not blocked at the T-tee branches. Be sure to use only
standard T-tees.
3. Do not use commercially available Y-shape joints (
installer).
Outdoor and indoor units are connected together by a pair of headers.
If the maximum tubing length exceeds 90 m (effective length), increase the size of the main tubing for both liquid
and gas by one size. Be careful when selecting tube sizes, as the wrong size may impair performance.
Table 2 Outdoor Tubing / Main Tube Sizes
35.5
φ25.4 (φ28.58)
Gas tube (mm)
Liquid tube (mm)
Balance tube (mm)
(*1) If anticipating future expansion, select tube diameters according to total capacity after expansion.
(*2) If the maximum tubing length exceeds 90 m (equivalent length), increase the diameter of the main tubing to the size
in ( ) for both liquid and gas tubes. However, gas tube diameter should not exceed 38.1 mm. (Reducers are available
locally.)
(*3) For systems with two type 35.5 kW.
Table 3 Size of main tubing after branch
∼ 5.6
φ12.7
Gas tube (mm)
φ6.35
Liquid tube (mm)
(*1) Select a diameter for the main tubing after a branch that is no larger than that of the header.
(In cases where the main tubing after a branch would have to be larger than the header tubing, select tubing of the
same size, and never exceed the header size.)
(*2) If the maximum tubing length exceeds 90 m (equivalent length), increase the diameter of the main tubing after the
branch to that indicated within the parenthesis for both liquid and gas tubes. However, gas tube diameter should not
exceed 38.1 mm.
(*3) In this table, "∼ XX" means "XX kW or below."
) for liquid tubing (for the branch tubing that is provided by the
(*1) (*2)
Total allowable capacity of connected outdoor units (kW)
45
φ28.58 (φ31.75)
φ12.7 (φ15.88)
―
(*1) (*2)
Capacity of indoor units after branch (kW)
∼ 16.0 ∼ 22.4 ∼ 28.0
φ19.05 φ22.22
φ15.88
(φ22.22) (φ25.4)
φ9.52 (φ12.7)
GB - 6
) are included in the package with the part. Be
71 101
φ31.75 (φ38.1)
φ15.88 (φ19.05) φ19.05 (φ22.22)
φ9.52
(*3)
(*3)
∼ 35.5 ∼ 45.0 ∼ 72.8
φ25.4
φ28.58 (φ31.75)
(φ28.58)
φ15.88
φ12.7 (φ15.88)
(φ19.05)
Over 101
φ38.1
φ9.52
∼ 101.0
Over 101.0
φ31.75
φ38.1
(φ38.1)
φ19.05 (φ22.22)