Install Instructions
Installation
25│Page
InanEasy‐Linksystem,thepumpmustbeconnectedtothe“Pumpconnector”in
the“MASTERunit”only.Ifthepumpisconnectedtoanyofthe“SLAVEunits”,the
pumpwillnotwork.
PUMPCONTROLCONNECTION
The T‐H2‐DV/T‐H2‐OS can be used to control a recirculation pump. Proper pump control helps to
preservethe lifeof thesystem and saves energy as well: The T‐H2‐DV/T‐H2‐OSpumpcontrol port is a
“normally open dry contact”, and therefore needs additional components
to properly control a
recirculationpump.Tocontrolarecirculationpump,connectthepumptothe“Pumpconnector”inthe
T‐H2‐DV/T‐H2‐OSas shownin the diagrambelow. (In an Easy‐Linksystem, connect thepumpONLY to
the“MASTER”unit.)Thepumpistobeconnected
usingsuitablerelaysshowninthediagrambelow.
Pleasemakesuretherelaysareproperlyratedfortherecirculationpump.
UsingtheT‐H2‐DV/T‐H2‐OS’sinternalthermistorsasatemperaturecontrol,therecirculationpumpwill
onlyturnonwhenrecirculationisneeded.
CAUTION
Connecttothis“Pumpconnector”.
Recirculation
pump
Powersupply
forpump
AC120V
AC220Vetc
Powersupply
forrelay
ThesecomponentsareNOTincludedwiththeT‐H2‐DV/T‐H2‐OS
andareexternaltotheunit.Theymustbeacquiredseparately.
Thermal
relay
AC120V
AC220Vetc
forrelay