Commissioning Of Hydraulic Station - Baxi Solarflo Commissioning, Maintenance & Servicing Manual

Fig. 5
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Table 1
Flow rate
(when system is cold)
Collectors l/min
20 approx. 4
30 approx. 6
Fig. 6
© Baxi Heating UK Ltd 2008
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Commissioning of hydraulic station

2.1 Checking and adjusting the flow rate
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1. Adjust the flow rate when the system is cold (20°C)
(see Fig. 5).
2.The flow rate should be adjusted to give the optimum flow
rate depending on the number and type of collector(s)
connected.
3. Manually operate the solar pump (See Section 3.6).
4. Set the solar pump speed selector (Fig. 5 Item 5) so that the
required flow rate is achieved or exceeded with the lowest
possible setting.The flow limiter adjusting screw (Fig. 5 Item 3)
can be used to fine-tune the flow rate.
5. Depending on the number and type of collectors installed,
set the required flow rate from table (See Table 1).
6.The float in the flow meter will indicate the circulation flow
rate through the flow meter sight glass (Fig. 5 Item 4).
7. Adjust screw of the flow limiter (Fig. 5 Item 3) with a
screwdriver, until the upper edge of the float in the sight glass
indicates the required flow rate (Fig. 5 Item 4).Turn the screw
anticlockwise to increase the flow.
8. Ensure that the float is stable when the pump is running.
9. Set manual pump operation to off (See Section 3.6).
2.2 Installation of the thermal insulation
1. Refit the controller mounting moulding (Fig. 6 Item 1)
onto the rear moulding.
2. Push the front thermal insulation (Fig. 6 Item 2) against the
rear thermal insulation section (Fig. 6 Item 3) until it clips into
place.
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