• Outdoor Units • HEAT PUMP • RWEYQ-MY1
1
10
• VRV Systems • Outdoor Units
104
10
Installation of outdoor units
10 - 9 Refrigerant piping
10 - 9 - 4
Connecting the refrigerant piping
1
To avoid the risk of oil detention in the piping the piping between the outside units must be routed level or slightly upward.
2
The gas piping (both discharge and suction gas pipings in case of the heat recovery system) after branched, install without fail a trap of 200 mm
or larger using the piping included in the piping kit for connecting the outside unit. Otherwise, the refrigerant may stay within the piping, causing
any damage to the outside unit.
3
If the piping length between the outside unit connecting pipe kit or between the outside units exceeds 2 m, create a rise of 200 mm or more in the
gas line within a length of 2 m from the kit.
Pattern 1
Pattern 2
Prohibition pattern
To indoor unit
Descending
inclination
Descending
inclination
Oil may collect in piping
To indoor unit
Change to pattern 1 or 2.
To indoor unit
Piping between outside units
Prohibition pattern
To indoor unit
200mm
or more
The trap has not been installed in the gas piping.
Oil may collect in the stopping outside unit.
Change to pattern 1 or 2.
Case of With in 2m
Within 2m
Within 2m
Piping between outside units
Standing up of 200mm
or more
Case of more 2m
To indoor unit
To indoor
unit