Ochsner AIR 80 C13A, Operating And Installation Instructions

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Running costs
NOTE
In order to achieve an optimum heat
pump operation, the lowest possible
heating system flow temperatures are
to be aimed at. An
increase of the
room temperature by 1°C means a 5-
7% increase in energy consumption.
During the first heating season, higher running
costs can generally be expected, depending on
the residual moisture in the building - up to 50%.
An active screed floor drying out program addi-
tionally increases the running costs.
6.2.1 Flow temperatures
In order to achieve an optimum heat pump oper-
ation, the lowest possible heating system flow
temperatures (and hot water temperatures) are
to be aimed at. The max. system temperature is
to be limited to 60°C for the AIR 80 C13A (OLWP
65 plus) and AIR 80 C22A.
6.2.2 Ventilation
Intermittent intensive ventilation according to
own requirements should be carried out, espe-
cially during the heating period. Intermittent
intensive ventilation is much more energy-
efficient and thus more economical. Continuous
ventilation should be avoided on principle.
6.2.3 Set-back program heating
It is not recommended from an energy-efficiency
point of view to have a set-back of the heat sys-
tem flow temperature by means of a timer pro-
gram when using a low-temperature heating
system (e.g. underfloor heating), especially with
air/water heat pumps, as the system is very slow
to react and it can be that, at the end of the set
back phase, the extra system performance need-
ed will cause the 2nd heat generator (furnace, E-
rod) to switch in. This can cause undesired extra
energy loading and thus higher operating costs.