heat-timer EPU-D User Manual

DetailedOperation5
059840‐00Rev.AHeat‐TimerCorp.
Whentheoutdoortemperaturedropsbelowthecutoff,theEPU‐Dwillautomaticallybegincontrollingthe
heatingcycle.Aftertheheatingsystemisactive,theheatingsystemsensorwillregisterwhenheathasreached
throughoutthebuilding.Thecombinedeffectofthesetwosensorsistoprovideaneven,comfortablelevelof
heatthroughoutthebuilding.
Figure3: ExampleCyclesBasedonWeatherConditions
CycleLength
ThedurationoftheCycle‐ONperiod(whentheheatsourceisactivated)dependsonfourfactors:
• Outdoortemperature
• OutdoorCutofftemperature
• HeatAdjustmentsetting
•Cyclelength
WhentheoutdoortemperatureisabovetheOutdoorCutoff,theEPU‐Dwillnotcallforheat.Whentheoutdoor
temperatureisbelowtheOutdoorCutoff,thelengthoftheCycle‐ONsegmentisadjustedbythedayandnight
HeatAdjustmentsettings.“A”istheshortestheatduration,“P”isthelongestduration.

heat-timer EPU-D Specifications

General

Brand	heat-timer
Model	EPU-D
Category	Control Panel
Language	English