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DHW4a1 Engineering Parameters

loop parameters

ref   Description default range
C70 UNDH sets very Low muzzy level for heating loop 4.0 1.0 to 25.0C
C71 OVRH sets very High muzzy level for heating loop 4.0 1.0 to 25.0C
C72 DBBH deadband sets limit for OK band for heating loop 2.0 5 to 25.0C
C73 RCGH max rate of change heating   1 to 250
C74 GN H gain heating 50 1 to 250

System

ref   Description default range
C80 XCFG forces exit from config mode 0 to 1  
C81 GRP own group number 0 to 255  
C82 HDAY number of days holiday 0 0 to 99

Alarms

ref   Description default range
C90 NOAL no alarm    
C91 SENF sensor fail    
C92 EXTN alarm for external input    
C93 STOP STOP alarm received    

Registration table

ref   Description default range
C100 #ACT number of Actuators registered to this controller 0 0 to 8
C101 HTSC Heat source 1 -1 to 100

Documentation

ref   Description default range
C121 MZON zone number of master zone 0 0 to 200

Plot configuration

ref   Description default range
C130 PN A config variable number for channel A 51 0 to 255
C131 PT A period code for plot A 1 1 to 4
C132 PN B config variable number for channel B 52 0 to 255
C133 PT B period code for plot B 1 1 to 4

Driver Parameter

ref   Description default range
C150 HTYP heating driver type 2 0 to 5
C151 HSTG number of heating stages 1 0 to 8
C152 CTYP cooling driver type 2 0 to 5
C153 CSTG number of cooling stages 1 0 to 8
C154 FTYP fan driver type 6 0 to 7
C155 FSTG number of fan stages 1 0 to 5
C156 MXVA* Maximum voltage channel A 10.0 0.0 to 10.0 volt
C157 MNVA* Minimum voltage channel A 0.0 0.0 to 10.0 volt
C158 MXVB* Maximum voltage channel B 10.0 0.0 to 10.0 volt
C159 MNVB* Minimum voltage channel B 0.0 0.0 to 10.0 volt

Optimum Start Stop

C160 OPST Optimum Start time (hours)   0 to 24.0
C161 OPOK Optimum Start complete (OK) (hours)   0 to 24.0
C162 MXOS Maximum Optimum Start time (hours) 6.0 1 to 24.0
C163 MXOF Maximum Optimum Stop time (hours) 2 0 to 4.0
C164 OPTE Optimum start Error allowance (droop) 1.0 0.5 to 5.0
C165 OPTH Heating Optimisation constant 100 read only
C166 OPTC Cooling Optimisation constant 100 read only
C167 OPTO Optimum off constant 100 read only
 

 

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