Jandy AE-Ti Installation And Operation Manual

Also see for AE-Ti: Installation and operation manual

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Jandy AE-Ti Installation And Operation Manual Manual pdf 12 page image

Page 10CAUTIONMake sure that flow requirements and poolwater turn over rates can be maintained withthe installation of additional heat pumps andplumbing restrictions.ATTENTIONAssurez-vous que la circulation d’eau requisesoit maintenue même si des pompes d’appointsou des éléments de plomberie, causant desrestrictions, sont ajoutés.PRECAUCIÓNAsegúrese de que los requerimientos de flujoe índices de volumen de agua de la piscinapuedan mantenerse, con la instalación debombas de calentar adicionales y restriccionesde fontanería.3.3 Check Valve InstallationThe heat pump must be protected from back-siphoning of water. If there is any chance of back-siphoning, provide a check valve between the pool andthe filter pump inlet.When an automatic chemical feeder is installedin the plumbing, it must be installed downstream of theheat pump. A check valve must be installed betweenthe heat pump and the chemical feeder to prevent back-siphoning of chemically saturated water into the heatpump where it will damage the components.3.4 Automatic Flow Control ValveThe inlet/outlet header of the AE-Ti heat pumpcomes equipped with an internal automatic flow controlvalve. The automatic flow control valve maintainsthe proper flow through the heat pump at rates up toapproximately 125 gpm (475 lpm). If the filter systemflow rate is higher than approximately 125 gpm (475lpm), install a manual bypass valve (see Figure 4).NOTE Be advised that if your circulation pump is over2 HP or if the total flow exceeds 125 gpm, youwill have to add an external bypass valve.3.5 Multiple Unit Installation3.5.1 Heat Pump and Heater CombinationIn certain regions of the country it may be moreeconomical to run a heat pump during the warmermonths and a gas heater during the cooler months.In some situations it may be desirable to run theheat pump in the “Chiller” mode during the hottestportion of the year and a heater during the coolermonths.The Jandy heat pump may be plumbed with a gasor electric heater or any combination of heat sourcesincluding solar. All heat sources must be plumbed inparallel to work correctly and efficiently.Figure 5 illustrates a recommended plumbinglayout for a heat pump / heater / solar combinationheating system for a pool / spa combination. Yoursystem may not contain all of these components, but thebasic plumbing will apply by eliminating the componentin the illustration that is not a part of your system.3.5.2 Multiple Heat Pump ConnectionsAll plumbing on multiple heat pump installationsmust be done in parallel (see Figures 6 and 7). Anequal flow of water to each heat pump is important foroptimum operation.NOTE It may be necessary to adjust water pressureswitch if a unit is installed below the water level.See Section 5.6 for details on when and how toadjust the pressure switch.NOTE Each heat pump allows a maximum flow rate of125 gpm and requires a minimum of 30 gpm.