Specifications

Riverside Hydronics
®
, LLC – 34-160 10/11
990 Haltom Road - Fort Worth, Texas 76117 - Tel [phone] Page | 20
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TheTIER2INDEPENDENTOPERATION,whenactivated, separatesthefunction ofTier1 andTier2. 
Thiseffectivelyallowstheusertocontr oltwoseparatehydronicsystemswithoneOnTrac®.Tier2is
assigneditsownloopsensor,whichcanbeconnectedtoanyboile r intheTier2system.
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 Assign the TIER 2 SENSOR ADDRESS.
The default address is 13 but can be
any address in the Tier 2 boiler
system(13‐20).
 PushthebuttonTURNONT2SYSTEM
SENSORtoac tivatethesensor.
 TurnontheINDEPENDENTfunction.
Although the TIER 2 INDEPENDENT
OPERATION
is controlled indep endently of
Tier1,theSystemSetpointmustbethesame
asTier1.
OthercontrolfunctionsthatactontheSystemSetpointsuchasOutdoorReset,ScheduledSetback
andRemoteSetpointalsoactonTier1andTier2 thesame.
Lead Lag functions such as CYCLE PERIOD,
 CYCLE OCCURS and SYSTEM DIFFERENTIAL setting are
uniquetoeachTierandcanbeadjustedseparately.
BoilersineitherTier1orTier2canbelocated upto1000metersfromtheOnTrac®control.
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TIER 2 INDEPENDENT OPERATIO
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