Page 1 of 18 APHITEMPCON001-11-04
APPLICATION:
This standalonemicro-controller basedLCD temperature
controller providesproportional plus integral (P+I) andon/off
temperature control for commercial Heating, Ventilating&Air
ConditioningSystem suchasHydronicHeating, Air Handling
Unit, Heat Exchanger or CondensingTower.
This controller hasamodulatinganalog2 to10Vdcor 4 to
20mAoutput anda2Aon/off output to realize variousoptional
control functions including cool/heat changeover, heat/cool
sequence control, emergency interlockingandauto-alarming
control.
Table of Contents
Application………………………………………….1
Features…………………………………………….1
Specification………………………………………..2
Dimensions, Installation&WiringTerminals..….3
Control Operation………………………………….4
Installer SetUp……………………………………..12
FEATURES:
•
PI (proportional plus integral) control action
providesaccurate, stableand comfortable
temperature control.
•
Compatiblewith series70direct-coupled
damper / valveactuator likeML7161,
ML7174, ML7420 / ML7421seriesML7425,
ML7984 series, N20010, S10010, M7410E
series, CN7505, CN7510 / CN72 series
CN7220&CN7234alsoVC79 seriesetc.
•
Backlit LCD todisplay both settingand
measured value.
•
AdjustableZeroEnergyBand, On/Off
Differential, Proportional Bandand
TemperatureOffset.
•
Analogoutput canbe forcedmanually tobe
convenient for installation& commissioning.
•
Optional 2 to10Vdc or 4 to20mA direct
actingand reverseactinganalogoutput.
•
Selectable internal andexternal temperature
sensor.
•
Wide temperature control range (-20 to110
°C by usingexternal temperature sensor) is
suitable for extreme temperature control such
as steam and icewater.
•
WatchDogTimer: to resume the controller
from hanging condition.
•
Brownout effect toavoidmalfunctioningand
careonpower ON andpower OFF.
•
Pluggable terminal blockallowspre-wiring
outsideof the controller.
•
Compact sizeand slim designprovide
elegant andattractivemodern style
appearance.
