Glossary

Table 25.   Glossary

Abbreviation

Description

DEX

day extension

DHW

domestic hot water

DISP

display value

LEG

legionella protection

MXT

maximum thermostat

PRP

primary pump (charging pump)

PST

primary supply temperature

REF

refill valve

RWT

return water temperature

SEP

secondary pump (circulation pump)

SST

secondary supply temperature

SYS

system parameter

VLV

valve