| Piping Connections and Piping Access Points |
Figure 13 Liebert XD prefabricated piping assembly |
|
Return Main |
|
Supply Main | Service Valve, typical |
| (all ports) |
Threaded Cap (Typical)
5.Thread the return couplers together, the larger of the two couplers (Liebert XD Flex Pipe and return main).
6.Use one of the adjustable wrenches to hold the fixed side of the female coupler on the Liebert XDCF stationary. With the other adjustable wrench, tighten the collar onto the coupler. Tighten these only until the force required to tighten abruptly increases. See Figure 14.
NOTICE
Do not overtighten the couplers. Overtightening of couplers will damage the couplers.
Figure 14 Detail view of Liebert XD Flex Pipe and prefabricated piping port
Tighten collar with wrench.
DO NOT OVERTIGHTEN!
Supply Side Torque Range for
1/2" coupler is 22.1 to 25.8 lb/ft
Return Side Torque Range for
1" coupler is 59 to 62.7 lb/ft
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
7.Repeat Steps 5 and 6 for the smaller coupler (supply line).
8.Once the supply and return connections are completed, open the return service valve, then open the supply service valve.
With the equipment running, cool air is discharged from the back of the Liebert XDCF.
15