Figure 8.10.6 Setting Low Temperature Heating Circuit Functions For Variable Temps; Figure 8.10.6.1 Setting Heating Circuit Functions For 0-10V Analogue Input (Temperature) - Hamworthy MILBORNE381 Series Design Installation, Commissioning And Operating Instructions

8.10.6 Setting low temperature heating circuit functions for compensated (variable) temperature
Parameter Description
End user adjustable parameters
P.3 Low temperature circuit set-
point
Heating engineer adjustable parameters – code protected
P.22 Low temperature circuit type
P.23 Low temperature circuit
upper limit
P.24 Low temperature circuit
lower limit
P.26 Low temperature circuit
hysteresis on
P.27 High temperature circuit
hysteresis off
P.28 Mixing valve opening period
P.29 Mixing valve closing period
P.30 Mixing valve static period
P.37 Compensation curve min
external air temp setting
P.38 Compensation curve max
external air temp setting
8.10.6.1 Setting heating circuit functions for 0-10v analog input (TEMPERATURE)
P.14 High temperature circuit type
P.18 High temperature circuit
lower limit
P.19 High temperature circuit
hysteresis on
P.20 High temperature circuit
hysteresis off
P.22 Low temperature circuit type
P.24 Low temperature circuit
lower limit
P.26 Low temperature circuit
hysteresis on
P.27 Low temperature circuit
hysteresis off
HAMWORTHY HEATING LTD
Setting procedure
Set to required operating temperature.
Limited by settings at parameters 23 & 24.
Set to 1 for compensated flow temperature
Limits the end users set-point adjustment available at parameter
3. Max 70°C
Sets max flow temperature at the minimum external air
temperature set at parameter 37
Limits the end users set-point adjustment available at parameter
3. Min 10°C
Sets min flow temperature at the maximum external air
temperature set at parameter 38
Sets the temperature at which the burner will re-start after
reaching set-point at parameter 3.
Eg. For 50°C set-point. Setting to 7 will re-start the burner at 43°C
Sets the temperature at which the burner will stop after reaching
set-point at parameter 3.
Eg. For 50°C set-point. Setting to 1 will stop the burner at 51°C
Set time taken for mixing valve to open from fully closed position.
Eg 5 secs. Max 255 secs
Set time taken for mixing valve to close from fully open position.
Eg 7 secs. Max 255 secs
Set time mixing valve is to remain static after moving. Eg 5 secs.
Max 255 secs
Set for external air temperature at which the maximum flow
temperature set in parameter 23 is required. Eg -1°C
Also sets external air temperature limits for high temperature
heating circuit
Set for external air temperature at which the minimum flow
temperature set in parameter 24 is required. Eg +18°C
Also sets external air temperature limits for high temperature
heating circuit
Set to 3 for BMS 0-10v temperature based
Limits the end users set-point adjustment available at parameter
1. Min 10°C - Max 50°C
Sets the temperature at which the burner will re-start after
reaching set-point at parameter 1. Eg. For 80°C set-point.
Setting to 7 will re-start the burner at 73°C
Sets the temperature at which the burner will stop after reaching
set-point at parameter 1.
Eg. For 80°C set-point. Setting to 1 will stop the burner at 81°C
Set to 3 for BMS 0-10v temp. based Low temperature circuit
Limits the end users set-point adjustment available at parameter
3. Min 10°C - Max 25°C
As 19 above. Eg. For 40°C set-point. Setting to 7 will re-start
the burner at 33°C
As 20 above. Eg. For 40°C set-point. Setting to 1 will stop the
burner at 41°C
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MILBORNE 500001130/J