Samson TROVIS 5573 - Page 125

EB 5573 EN 16-43
Appendix A (conguration instructions)
Parameters Default Parameters: value range
OT activation value in rated operation –15.0°C PA1,2:–50.0to+5.0°C
(onlywhenCO1',CO2'->F04-0)
16.2.4.2 OT deactivation value in rated operation
The associated heating circuit is immediately switched off when the outdoor temperature ex-
ceeds the limit 'OT deactivation value in rated operation'. The valve is closed and the pump
isswitchedoffaftert=2xValvetransittime.Theheatingisimmediatelyswitchedonagain
whentheoutdoortemperaturefallsbelowthelimit(minus0.5°Chysteresis).
The default setting causes the system to be switched off during warm weather at an outdoor
temperatureof22°C.
Parameters Default Parameter level: conguration
OT deactivation value in rated operation 22.0°C PA1,2:0.0to50.0°C
16.2.4.3 OT deactivation value in reduced operation
The associated heating circuit is immediately switched off when the outdoor temperature ex-
ceeds the limit 'OT deactivation value in reduced operation'. The valve is closed and the
pumpisswitchedoffaftert=2xValvetransittime.Theheatingisimmediatelyswitchedon
againwhentheoutdoortemperaturefallsbelowthelimit(minus0.5°Chysteresis).
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 Default Parameter level: conguration
OT deactivation value in reduced opera-
tion
15.0°C PA1,2:–50.0to+50.0°C
16.2.4.4 Variable night set-back
WiththesettingCO1',CO2'->F04-1,thenightset-backisvariablebasedontheoutdoor
temperature. The night set-back is fully effective at outdoor temperatures above the outdoor
temperaturelimitvalue'OTLnight100%'.
The absolute value of the night set-back is linearly reduced to zero in the range between this
valueandtheoutdoortemperaturelimitvalue'OTLnight0%'forcontinuousdaymode.