Data Aire LCS Installation, Operation And Maintenance Manual

Also see for DAFC 06: Installation, operation and maintenance manual Installation, operation and maintenance manual Installation, operating and maintenance manual

Data Aire LCS Installation, Operation And Maintenance Manual Manual pdf 12 page image

122.2 Water/Glycol Cooled Unit PipingThe required field installed condenser water pipe sizes may or may not be the same as the connectionsizes at the evaporator or fluid cooler. (Refer to 2.1.4 for connection sizing.) This will depend on thelength of pipe and the calculated pressure drop of peripheral components.Water cooled units may also be connected to building water or tower water sources. Pipe size willdepend on length of run and the maximum water flow required.Shutoff valves, field provided, should be installed within a few feet of the inlet and outlet connectionsof the evaporator to allow the unit to be isolated for service. There should be a means of draining theunit for service. Drain/fill valves should be located at the lowest point on the connected piping.All water/glycol units are shipped with plate/fin heat exchangers as standard equipment. A straineris shipped loose and is to be field installed in the supply line with shut-off valves, field provided,before and after the strainer. The strainers and water/glycol piping must be cleaned on a periodicbasis. If the unit is shipped with an optional shell and tube condenser, stainers are not required norshipped with the unit.One of the most common problems in a water/glycol system is the presence of air inthe condenser water loop. Air vents must be installed in various locations in the pipingsystem to purge the air.Glycol system piping may include a centrifugal pump (or pumps for redundancy). Pumps must beprimed before operating per the pump manufacturer’s guidelines.(Field Provided)