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“Press”
Pump Setup
button to access the following parameters:
Factory Setting
Range / Choices
Parameter and Description
Central Heat,
Optional Priority
Never,
Any Demand,
Central Heat,
No Priority,
Central Heat,
Optional Priority
System Pump run pump for:
Activates the system pump output according to selected function.
Never:
Pump is disabled and not shown on status screen.
Any Demand:
Pump Runs during any call for heat.
Central Heat, No Priority: Pump Runs during central heat and frost protection call for
heat. Pump
does not start
for a DHW call for heat and
continues to run during Domestic Hot Water Priority.
Central heat, Optional
Priority: Pump Runs during central heat and frost protection call for
heat. Pump
does not start
for a DHW call for heat and will be
forced off if there is a DHW call for heat and Domestic Hot
Water Priority is active.
Any Demand
Any Demand,
Header Sensor
Demand
Boiler Pump run pump for:
Activates the boiler pump output according to selected function.
Any Demand: Pump Runs during any call for heat.
Header Sensor Demand: Pump Runs when boiler is firing and when there is DHW
demand. Selected when Header Sensor is selected as
modulation sensor and boiler is a stand alone boiler.
Primary
Loop Pipe
IWH
Never,
Primary Loop
Piped IWH,
Domestic Pump run pump for:
Activates the Domestic pump output according to selected function.
Never: Pump is disabled and not shown on status screen.
Primary Loop Piped IWH: Pump Runs during domestic hot water call for
heat. Domestic Hot Water Priority enable/disable
does not affect pump operation.
i. Operation
F. Changing Adjustable Parameters (continued)
Explanation:
This piping arrangement only
services central heat. When
there is any demand both
boiler and system pumps turn
on.
Example Pump Parameter selections:
Single boiler with no Indirect Water Heater
Parameter Selection:
System pump = “Central Heat,
Optional Priority”
Boiler pump = “any demand”
DHW pump = “never”
