SystemAir TA 650 EL - 8 Maintenance; General maintenance warnings; 8.1 Changing air filters

6.7Hotwaterheater
Thehotwatercoilislocatedafterthefan.Thecoilismountedforeasyconnectionthroughtheshortside
oftheunit.Atthesametime,itisdesignedinsuchawaythatitiseasytoaccessthepipeconnections.
Thematerialiscopperpipingwithaframeofgalvanizedsheetsteelandaluminumns.
Thecoilhasaventingnippleandoneimmersionthermostatasfrostguard.Ifthetemperaturedropsand
thereisariskoffreezing(outletwatertemperaturebelow8°C)thewaterowismaintained(themagnetic
valvewillopenfully),thefanstopsandtheoutdoorairdamper,accessory,closesinstantaneously
Fig.10Waterregulation
APump,secondarycircuit
BNon-returnvalve
CValve-actuator+watervalve(accessories)
DPumpprimarycircuit
Thegureshowsapossiblesolutionfordesigningthewaterregulation.
(a)using2wayvalveand(b)using3wayvalve.
TA450-4500Installationinstructions
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SystemairSverigeAB