37
© Baxi Heating UK 2012
12.0
Setting the system flow rate
12.1
Checking and adjusting the flow rate
1. Adjust the flow rate when the system is cold (approx 20°C)
(see Fig. 36).
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 11.5).
4. Set the solar pump speed selector (Fig. 36 Item 5) so that
the required flow rate is achieved or exceeded with the
lowest possible setting. The flow limiter adjusting screw (Fig. 36
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. 36 Item 4).
7. Adjust screw of the flow limiter (Fig. 36 Item 3) with a
screwdriver, until the upper edge of the float in the sight glass
indicates the required flow rate (Fig. 36 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 11.5).
12.2
Installation of the thermal insulation
1. Refit the controller mounting moulding (Fig. 37 Item 1)
onto the rear moulding.
2. Push the front thermal insulation (Fig. 37 Item 2) against the
rear thermal insulation section (Fig. 37 Item 3) until it clips into
place.
Fig. 36
Fig. 37
2
5
3
4
1
2
3
1
Table 1
Flow rate
(when system is cold)
Area
l/min
2m
2
2 - 4
3m
2
3 - 6
4m
2
4 - 8
5m
2
5 - 10
6m
2
6 - 12
