13
NOTE:
The rubber gasket is to prevent nesting of animals.
Fig. 18 —Pipe Descriptions
Fig. 19 —Rubber Gasket Locations
Fig. 20 —Accessory Connecting Pipes
REFRIGERANT PIPING MEASUREMENTS — Figure 21
and Table 7 show pipe length measurements when connecting
the outdoor units to indoor units.
The reduced length of the branch joint is 1.6 ft of the
equivalent length.
The inner units should be as equal as possible to be installed
on both sides of the U-shape branch joint.
The allowable length of the first branch joint, which
connected to the indoor unit, should be equal to or shorter than
131 ft. However, when the conditions described in Table 7 are
met, the allowable length can be extended to 295 ft. Table 8
shows allowable conditions for increasing refrigerant pipe
diameters.
* For a single module it is not necessary to connect the oil
balance
LEGEND
1
—
Liquid side ball valve (high pressure)
2
—
Gas side ball valve (Low pressure)
3
—
Service port (For pressure testing and refrigerant charging)
4
—
Oil balancing pipe*