Piping
Figure 29 Detail view of Liebert XD Flex Pipe and prefabricated piping port
| Tighten collar |
Supply Side Torque Range for | with wrench. |
1/2" coupler is 22.1 to 25.8 lb/ft | DO NOT |
Return Side Torque Range for | OVERTIGHTEN! |
1" coupler is 59 to 62.7 lb/ft |
|
8. Repeat Steps 6 and 7 for the smaller coupler (supply line).
Service Valve Note:
Make sure the valve
is closed before attaching flex pipe to the system.
Hold threaded coupler here with a wrench to keep the pipe stationary while tightening collar with another wrench.
Flex Pipe
9.Once the supply and return connections are completed, check to make sure the Liebert XDV fan power switches are Off, then connect the power cords to their power sources.
10.Turn the fan switches on. Ensure that the fans operate.
11.Open the return service valve first, then open the supply service valve.
With the fans running, cool air is discharged from the front of the Liebert XDV.
Figure 30 Liebert XD system with prefabricated piping assembly and Liebert XD Flex Pipe
Return Service Valve Make sure valve is open after system leak check
Supply Service Valve. Make sure valve is open after system leak check
Return
Main
Supply Main
Return Liebert Flex Pipe from XDV unit
Supply Liebert Flex Pipe from Liebert XDV unit
27
