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30EPU‐DInstallationandOperationManual

059840‐00Rev.A Heat‐TimerCorp.

DayAdjustment

NightAdjustment

DayCutoff

Selections:AthroughP Default:E

MenuPath:/SystemSettings>DayHeatAdjust

Description:

ControlsthelengthoftheCycle‐ONsegmentbasedontheoutdoortemperatureascomparedtotheDay

Cutoffsetting(see“DayCutoff”onpage 30)duringdaytimeoperation.Setting“A”isthelowestsetting(less

heat),“P”isthehighestsetting(mostheat).

Duringdaytimeoperation,ifthebuildingistoocold,settheDayAdjustmentoneletterhigher,ifthebuildingis

toohot,settheDayAdjustmentoneletterlower.Wait24hourstoevaluatethenewsettingbeforemakingany

additionaladjustments.

See“CycleLength”onpage 5formoreinformation.

Selections:AthroughP Default:D

MenuPath:/SystemSettings>NightHeatAdjust

Description:

ControlsthelengthoftheCycle‐ONsegmentbasedontheoutdoortemperatureascomparedtotheNight

Cutoffsetting(see“NightCutoff”onpage 31)duringnighttimeoperation.Setting“A”isthelowestsetting

(lessheat),“P”isthehighestsetting(mostheat).

Duringnighttimeoperation,ifthebuildingistoocold,settheNightAdjustmentoneletterhigher,ifthe

buildingistoohot,settheNightAdjustmentoneletterlower.Wait24hourstoevaluatethenewsetting

beforemakinganyadditionaladjustments.

See“CycleLength”onpage 5formoreinformation.

Selections:20°F/-7°C(on)

100°F/38°C(off)

Default:55°F/13°C

MenuPath:/SystemSettings>DayCutoff

Description:

SetstheoutdoordaytimetemperaturecutoffforwhentheEPU‐Dcallsforheat.

Whentheoutdoortemperaturefallsbelowthecutoff,thecontrolbeginsrunningcyclesandprovidingsteam

totheheatingsystem.

Whentheoutdoortemperaturerisesto2°Fabovethecutoff,thecontrolstopsprovidingsteamtotheheating

system.

heat-timer EPU-D User Manual

Questions and Answers: