Hamworthy STRATTON MK3 Series Installation, Commissioning And Servicing Instructions page 43

4.7.5. Connection of the boiler circulation pump (compulsory accessory)
4.7.5.1. Accessory supplied by Hamworthy
4.7.5.2. Accessory supplied by the customer
4.7.6. Fuses
06.02.2023
If the accessory is supplied by Hamworthy, please refer to appendix list.
The circulation pump is controlled by a 230 VAC (1A max.) output on the
NAVISTEM B3100 panel.
This output is active when a request for heat is in progress on the boiler.
If the circulation pump does not have a remote control:
Directly wire the power supply of the circulation pump (230 VAC - 1A max.)
to the terminal QX3 (contacts L3, N and ) on the NAVISTEM B3100
panel. If the circulation pump has electronic control, or is high efficiency,
or consumes more than 1A, the power supply must be via a contactor.
If the circulation pump is equipped with a dry-contact On / Off control:
Connect the power supply of the circulation pump directly from your
electric panel.
Use the VFC pump control option kit..
If the circulation pump is equipped with a 0-10V control:
Connect the power supply of the circulation pump directly from your
electric panel.
Use PWM to 0-10V conversion option kit..
Set the speed parameters for the 2321, 2322 and 2323 boiler pumps
(Boiler menu) to the same value.
The STRATTON MK3 boiler is fitted with four fuses on the boiler controller
(refer to the label on the protective cover for their positions and characteristics).
Three spare fuses are also provided on the boiler controller.
STRATTON MK3 - Installation, Use and Maintenance
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