Computherm Q3RF Operating Instructions Manual page 11

frequent on and off switches of the boiler reduce its efficiency
and hence increases the gas consumption. We recommend
using the ±0.1 °C switching sensitivity for heating systems
with high thermal inertia (e.g. underfloor heating), and
the ±0.2 °C switching sensitivity (factory default setting)
for heating systems with low thermal inertia (e.g. flat panel
radiators). You can read more about switching sensitivity in
Chapter 4.
3.3 Switching between the Heating and Cooling Mode
The heating or the cooling mode of the thermostat can be
selected by the right jumper.
With factory default settings the jumper is located on the
central and uppermost pins, which selects the heating mode.
By relocating the jumper onto the bottommost and central
pins, the cooling mode can be selected. The output terminals
1 (NO) and 2 (COM) of the receiver unit are closed below
the set temperature in heating mode, and they are clo-
sed above the set temperature in cooling mode (taking
the switching sensitivity into account).
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