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We reserve the right to make technical changes.
83052300eUK © ait-deutschland GmbH
Abbreviation Meaning
Op. h. 2hg1 Operation hours, additional heat
generator 1
Op. h. 2hg2 Operation hours, additional heat
generator 2
Op. h. comp1 Average running time of 1st
compressor
Op. h. comp2 Average running time of 2nd
compressor
Op. h. hp Operation hours heat pump
Par. mode Parall. operation
PEX Party external Room station
possible for WZS devices potent.
ext.
Pump opt. Pump option
Read-CPd Compressor Read-CPd
Release 2 CP Release 2nd compressor
Release 2hg Release second heat generator
Ret. targ. Return setpoint temperature
Roomstat. Room station (= room remote
adjuster)
RRA Room remote adjuster
RTincr.e max Return increase maximum
S/W brine/water
Screed heat. Screed heating
Stop SW Off-time domestic hot water
Suppl. pump Additional circulating pump
SW Domestic hot water
SW actual Domestic hot water actual
temperature
SW des val Domestic hot water target
temperature
SW. Domestic hot water
SWC Brine/Water compact
Swi c time Off-time switching cycle
SW-therm.
switch
Domestic hot water thermostat
SW-Version Software version
TA External sensor
TB1 Temperature sensor mixing
circle 1
TBW Domestic hot water temperature
sensor
T-def.airend Temperature air defrost end
ThDsin. Thermal disinfection
THG Temperature sensor hot gas
Abbreviation Meaning
T-HG max maximum hot gas temperature
T-HS min minimum heat source
temperature
Tp-defr. air. Temperature air defrost
TRL Temperature sensor return
TRL-E Temperature sensor return
external
TSW Temperature sensor domestic hot
water
TVth. disinf2 Thermal disinfection – set
temperature
VD Ventilation day mode
VEN Fan
Vent. air inlet Air input ventilator (= defrosting
function)
Ventilation Ventilation of the heat pump
housing
VP Ventilation Party (= Continuous
daytime operation)
W/W Water/water
WWC Water/Water Compact
ZUP Additional circulation pump
ZWE Second heat generator
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