Figure 8.10.3 Setting High Temperature Heating Circuit Functions For Constant Temp; Figure 8.10.4 Setting Low Temperature Heating Circuit Functions For Constant Temp - Hamworthy MILBORNE381 Series Design Installation, Commissioning And Operating Instructions

8.10.3 Setting high temperature heating circuit functions for constant temperature
Parameter Description
End user adjustable parameters
P.1 High temperature circuit set-
point
Heating engineer adjustable parameters – code protected
P.14 High temperature circuit type
P.16 Heating circuit priority
P.17 High temperature circuit
upper limit
P.18 High temperature circuit
lower limit
P.19 High temperature circuit
hysteresis on
P.20 High temperature circuit
hysteresis off
Circuit priority Parameter P.16 - Prioritising one heating circuit over the other, allows the boiler management
system to provide that circuit with maximum available power at all times there is a heating demand.
The priority method may reduce the power available to other circuits if there is a high demand in the prioritised
circuit and the boiler sizing is lean.
If all circuits are required to operate without interruption the priority should be set to shared, ie setting '0'.
8.10.4 Setting low temperature heating circuit functions for constant temperature
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
HAMWORTHY HEATING LTD
Setting procedure
Set to required operating temperature.
Limited by setting at parameters 17 & 18.
Set to 0 for constant flow temperature
Set to 0 for shared priority
Set to 1 for high circuit priority
Set to 2 for low circuit priority
Limits the end users set-point adjustment available at parameter
1. Max 80°C
Limits the end users set-point adjustment available at parameter
1. Min 10°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 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 required operating temperature.
Limited by setting at parameters 23 & 24
Set to 0 for constant flow temperature
Limits the end users set-point adjustment available at parameter
3. Max 70°C
Limits the end users set-point adjustment available at parameter
3. Min 10°C
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 sec.
Max 255 secs
Set time mixing valve is to remain static after moving. Eg 5 secs.
Max 255 secs
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MILBORNE 500001130/J