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Siemens Building Technologies Basic Dokumentation RVA63.280, RVA53.280 CE1P2374E
Landis & Staefa Division 19.04.2001
1.18 Summer / winter changeover temperature
HC1 and HC2 (THG)
• 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.
Entry:
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
Benefit
Description
Setting
Effect
Notes
Changeover
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