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Installation

23│Page

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InanEasy‐Linksystem,thepumpmustbeconnectedtothe“Pump”connectorin

the“PARENT”unitonly.Ifthepumpisconnectedtoanyofthe“CHILD”units,the

pumpwillnotwork.

PUMPCONTROLMODE

(OnlyavailableontheT‐D2‐IN/OSmodels)

TheT‐D2‐IN/OSwaterheaterscanbeusedtocontrolarecirculationpump.Properpumpcontrolhelps

topreservethelifeofthesystemandsavesenergyaswell.

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Thewa ter heaterpumpcontrolport isa“normally open dry contact”,andthereforeneedsadditional

componentstoproperly

controlarecirculationpump.

To control a recirculation pump, connect the pump to the “Pump” connector in the water heater as

showninthediagrambelow.(In anEasy‐Linksystem,connect thepumpONLY to the “PARENT” unit.)

Thepumpistobeconnectedusingsuitablerelaysshownin

thediagrambelow.

Pleasemakesuretherelaysareproperlyratedfortherecirculationpump.

Usingthewaterheater’sinternalthermistorsas atemperaturecontrol,therecirculationpumpwillonly

turnonwhenrecirculationisneeded.

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CAUTION

ThesecomponentsareNOTincludedwiththewaterheaterandare

externaltotheunit.Theymustbeacquiredseparately.

Connectto this“Pump connector”.

Recirculation

pump

Thermal

relay

120VAC

220VACetc

forrelay

Powersupply

forpump

120VAC

220VACetc

Powersupply

forrelay

Takagi T?K4?IN User Manual

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