44 We reserve the right to make technical changes | 83055600dUK – Translation of the original instruction manual (HMD 2) | ait-deutschland GmbH
Abbreviations (selection)
Abbreviation Meaning
2hg Second/additional heat generator
Amb. temp. External/ambient temperature
AS Customer service
ASD Defrost, Brine pressure, ow
BCP Fan, well or brine circulation pump
BLP Domestic hot water charging pump
BSUP Well / brine circulating pump
BUP Domestic hot water circulation pump
BWT Domestic hot water thermostat
CP Compressor
Defr/Brin/Flow Defrost, Brine pressure, ow
DHW Domestic hot water
EEV Electronic expansion valve
EEVC Electronic expansion valve (cooling)
EEVH Electronic expansion valve (heating)
EP Expansion board
EVI Enhanced vapour injection
EVU Release/o-time signal electrical supply
FUP Floor heating circulation pump
H(D)V Performance-controlled hydraulic module
(Dual)
HC Heating circuit
HC Add-time Heating control more time
HC Less-time Heating time less time
HD High-pressure / High-pressure pressostat
HMD Hydraulic module
HP Heat pump
HR Heating circuit regulator
HS Heat source
HS in Heat source inlet temperature
HS out Heat source outlet temperature
HS(D)V Performance-controlled hydraulic station
(Dual)
HT(D) Hydraulic tower (Dual)
HUP Heating circulation pump
KR Cooling circuit regulator
KS Cooling signal
L/W Air/Water heat pump
LWA Air/Water heat pump outdoor
LWAV Performance controlled Air/Water heat
pump outdoor
LWC Air/Water Compact heat pump
LWCV Performance controlled Air/Water
Compact heat pump
LWD Air/Water heat pump Dual
Abbreviation Meaning
LWDV Performance controlled Air/Water heat
pump Dual
LWI Air/Water heat pump indoor
LWP Air/Water heat pump serie professional
LWV Performance controlled Air/Water heat
pump indoor
MA Mixer open
MC Mixing circuit
MK Mixing circuit
MSW Brine/Water heatpump with IO-Max Board
MZ Mixer closed
ND Low-pressure / Low-pressure pressostat
PEX Party external Room station possible for
WZS devices potent. ext.
PWZS(V) Performance controlled Brine/Water
heatstation
RAD Radiator
RBE Room control unit
RFV Room remote adjuster
S/W Brine/Water heatpump
SEC Designation of the circuit board in the
switch box of the heat pump
serv.wat. Domestic hot water
SG Smart Grid
SLP Charging pump solar
SUP Circulation pump swimming pool
SW H Brine/Water heatpump
SWC Brine/Water Compact heatpump
SWCV Performance controlled Brine/Water
heatpump
SWP Brine/Water heatpump serie professional
SWT Swimming poop thermostat
T(F)B (1) (2) (3) Temperature sensor mixing circuit (1) (2)
(3)
TA Outdoor temperature sensor
TBW Domestic hot water sensor
TDI Thermal disinfection
TEE Temperature sensor external energy
source
TFL Temperature of the liquid refrigerant
TFL 1 Temperature of the liquid refrigerant
upstream of the electronic expansion
valve (heating)
TFL 2 Temperature of the liquid refrigerant
upstream of the electronic expansion
valve (cooling)
ThDsin Thermal disinfection
THG Temperature sensor hot gas
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