6
Pre-set time periods
A number of time period have been pre-set to
typical heating time periods, to aid in quick and
easy initial set up. For example, Option 1 has
been set up as follows:
Period 1
21°C
06:00 – 09:00
Period 2
19°C
12:00 – 14:00
Period 3
21°C
17:00 – 22:00
The pre-set time periods can be easy changed to
suit your preference by selecting the Space
heating menu and the ‘Setting’ option.
Quiet Mode
Runs the heat pump in quiet mode, which may
be desirable at night if the heat pump is located
near bedrooms. Please note that in quiet mode it
will take longer to reach the set temperature as
the heat pump is running at a lower capacity in
order to reduce noise.
4.4 Domestic hot water (DHW)
Selecting the domestic hot water icon from the
home screen will take you to the domestic hot
water menu, shown in figure 11.
Water temperature:
This icon shows the set point temperature of the
DHW. You can also adjust the set point hot water
temperature here by turning the dial up or down
and then pressing it in to confirm, provided that
the TIMER mode is not set (TIMER mode
overrides all temperature changes except the
temporary modes explained in section 4.6 and
the Boost function).
A practical temperature for domestic hot water is
45°C. The A-Class cylinder and heat pump
together can typically achieve up to 60°C. The
maximum achievable temperature for the heat
pump is measured during commissioning, and an
indication is given when selecting the DHW set-
point if the immersion will be required to achieve
the set-point (adjusting the temperature of the
DHW above the maximum cylinder temperature
causes the immersion to be used to heat the
water above this maximum temperature).
Operating mode:
This icon shows what mode the domestic hot
water is running in: ON, OFF or TIMER. The
default setting is OFF, but can be adjusted to
constantly on or in TIMER mode by selecting the
mode icon and turning the dial. Selecting the
TIMER menu allows you to select a predefined
programme which can be modified in the ‘Setting’
menu.
Water
Temperature
(Set Point)
Setting
(Schedule Timer)
Disinfection
Settings
Figure 11: DHW screen explained
Operating Mode
Boost
Button
Figure 12: Setting a new temperature using the Water
Temperature function
Summary of Contents for A Class Air Source Heat Pump
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