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Siemens Building Technologies Basic Documentation RVA63.242, RVA53.242 CE1P2373E
Landis & Staefa Division Description of end-user settings 26.03.2001
3.19 Summer / winter changeover temperature
heating circuit 1 (THG1)
Fully automatic operation throughout the year.
The heating will not be switched on when the outside temperature drops for short
periods of time.
Additional savings function.
Separate changeover of the heating circuits.
The summer / winter changeover temperature is the criterion for automatic summer /
winter changeover of the heating plant.
Setting range Unit Factory setting
8...30.0 °C 17
By changing the setting, the respective periods of time will be shortened or extended.
Increase: Winter operation will start earlier
Summer operation will start later
Decrease: Winter operation will start later
Summer operation will start earlier
• The summer / winter changeover temperature can act either locally or on other
devices in the system (also refer to section "Effect of summer / winter changeover
temperature") Also refer to "effect of summer / winter changeover function" in Index.
• This function only acts in automatic mode
• The display will show "ECO“
To determine changeover, the setting of the summer / winter changeover temperature
( ± a fixed switching differential) is compared with the attenuated outside temperature.
Also refer to “attenuated outside temperature” in Index.
Heating OFF (from winter to summer) TAged > THG + 1 °C
Heating ON (from summer to winter) TAged < THG – 1 °C
ON
17
T
THG
TAged°C
H
OFF
t
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