Waterside Check - Dimplex A8M Installation Manual

4.4.3 Waterside Check

The 'Waterside Check' menu allows you to select whether temperature control is based on the flow or
return temperature. This will apply to heating curves, as discussed in section 4.4.12.
It is generally always recommended to set the temperature control based on the return temperature
(the default selection on the UI), unless it is absolutely necessary to use flow temperature instead for a
particular set up.
CAUTION: Flow control may lead to unnecessary stopping and starting of the heat pump.
Selecting Next will bring you to the waterside checks menu (figure 17).
A number of waterside checks must be carried out as part of commissioning, and must be ticked as
completed. In the Waterside check menu:
Figure 17: Waterside Check
When checks are completed and 'Next' is selected, the type of temperature measurement devices to be
used in each heating zone must also be selected by scrolling across and pressing confirm. The following
options are available;
Figure 18: Temperature device
selection
NOTE: If any changes must be made to the commissioning configuration (e.g. selecting a different
probe), it is strongly advised that a factory reset is performed and that the heat pump is recommissioned
entirely. Changing individual settings during the commissioning process may cause commands to be
ignored or cause the heat pump to stop working correctly.
Millbrook House, Grange Drive, Hedge End, Southampton, SO30 2DF
• The system must be flushed.
• The strainer must be fitted to the return pipe and checked to ensure that it is
clean.
• The system must be pressurized (you must enter the system pressure).
• The system must be fully bled.
• The expansion vessel must be fitted
• Membrane pressure of the expansion vessel must be checked and adjusted
• User Interface (usually in zone 1 – heating system controller)
• Temperature probe (option for temperature probe 1 to 3, for additional
zones).
• Mechanical thermostat (option for mechanical stat 1 to 3, for additional
zones).
• Using a mechanical stat limits the level of heating control on the zone from
the UI. Heating in zones using temperature probes can be fully controlled using
the UI. Selecting 'Next' will bring you to the 'Temperature check' menu.
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