EB 5573 EN
65
Functions of the heating circuit
The default setting causes the system to be switched off at night time at an outdoor tempera-
ture of 15 °C to save energy. However, be aware when this setting is used that the system
takes awhile in the morning to warm up the building.
Parameters
WE
Parameter level: configuration
OT deactivation value in reduced opera-
tion
15,0 °C
PA1, 2: –50.0 to +50.0 °C
6.4.3 OT activation value in rated operation
If a heating circuit is in reduced operation (automatic mode), this circuit is switched to rated
operation whenever the outdoor temperature falls below 'OT activation value in rated opera-
tion'. Reduced operation restarts after the outdoor temperature rises above the limit (plus
0.5 °C hysteresis).
This function is activated at very low temperatures to avoid that the building cools down ex-
cessively outside the times-of-use when low outdoor temperatures occur.
Parameters
WE
Parameter level: configuration
OT activation value in rated operation
–15.0 °C PA1, 2: –50.0 to +5.0 °C
6.4.4 Summer mode
Summer mode is activated depending on the mean daytime temperature (measured between
7.00 h and 22.00 h) during the adjusted period.
If the mean daytime temperature exceeds the 'Outdoor temperature limit for summer mode'
on the n number of successive days, summer mode is activated on the following day. This
means that the valves in all heating circuits are closed and the circulation pumps are
switched off after t = 2 x 'Valve transit time'. If the mean daytime temperature falls below the
'Outdoor temperature limit for summer mode' on the m number of successive days, summer
mode is deactivated on the following day.
Functions
WE
Configuration
Summer mode
0
01.06
2
30.09
1
18.0 °C
CO5 > F04 - 1
Start date for summer mode: 01.01 to 31.12
No. days until activation (n): 1 to 3
End date for summer mode: 01.01 to 31.12.
No. days until deactivation (m): 1 to 3
Outdoor temperature limit for summer mode: 0.0
to 30.0 °C
Summary of Contents for TROVIS 5573
Page 144: ...144 EB 5573 EN Key number 1732...
