Boiler Control Instruction & Operation Manual
Page 3
5
of
68
Setup & Tuning
Parameter Adjustment
Pumps
Factory
Setting
Range /
Choices
Parameter and Description
System
Pump:
Any
Demand
System Pump
:
- Never,
- Any Demand,
- Central Heat No
Priority,
- Central Heat,
Optional Priority
- DHW Pump
Contact A: System Pump
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.
DHW Pump:
Pump Runs during domestic hot water call for heat. Domestic
Hot Water Priority enable/disable does not affect pump
operation
.
Any
Demand
Never
Any Demand
Contact C: Boiler Pump
Activates the Boiler Pump, Combustion Air Damper and/or Standby Loss Damper
output according to selected function:
Never:
Output is disabled and not shown on status screen
Any Demand:
Output activated for any burner demand.
DHW
Pump:
Primary
Loop Piped
(IWH)
Isolation Valve
:
- Never,
- Isolation Valve
- DHW Pump
Contact B: Isolation Valve
Activates the Isolation Valve or Domestic pump output according to selected
function.
Never:
Pump is disabled and not shown on status screen.
Isolation Valve:
Output activated for any burner demand or when boiler is lead
boiler.
DHW Pump:
Pump Runs during domestic hot water call for heat. Domestic
Hot Water Priority enable/disable does not affect pump
operation
.
Press
to adjust the following parameters.
