BAC 31213C - Freeze Protection for the Optional EASY CONNECT Piping Arrangement

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Freeze Protection for the Optional EASY CONNECT
®
Piping Arrangement
• EliminateallwaterintheoptionalEASYCONNECT
®
PipingArrangementandinall
internalpipingwhenthetowerisidle.
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• ItisessentialtodrainwaterfromtheEASYCONNECT
®
PipingArrangementand
internalpipingwheneverthepotentialforfreezingtemperaturesexists.Drainthewater
byusing1/2”NPTdrainportlocatedontheinboardsideoftheEASYCONNECT
®
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PipingArrangement.
• Therearethreerecommendedmethodsfordrainingthepiping:
– Preferred:Installanormallyopen1/2”solenoidvalveonthe1/2”drainconnection
oftheEASYCONNECT
®
PipingArrangement.Wirethevalveinthepumpcircuitso
thevalvecloseswhenthepumpisenergized.Selectthesolenoidvalvetooperate
withaminimumpressuredifferentialof0psi,whichisrequiredtolimitthestatic
headimposedonthevalvefromthewatercolumn.
– Installa1/2”manualvalveonthe1/2”drainconnectionoftheEASYCONNECT
®
PipingArrangement.Openthevalveduringthecoldweatheroperation.Keepthe
valveclosedduringthewarmweathertoachievefullthermalperformance.
– Removethe1/2”plugfromthe1/2”drainconnectionofEASYCONNECT
®
Piping
Arrangementduringthecoldweatheroperation.Reinstalltheplugduringthewarm
weathertoobtainfullthermalperformance.
Figure 7. Optional EASY CONNECT
®
Piping Arrangement