Operating instructions

ENGLISH
126
CONNECTION DRAWINGS
Marking
Explana
tion
HP Indoor unit air/water heat pump
WE Water tank (5-10 litres)
AAV Automatic venting valve
OWT Water tank (> 30 litres)
WT Water heater
TW Flow valve
PBV Relief valve
FH Underfloor heating
RA Radiator
HE Heat exchanger
MFV Manifolds
ET Electric heater
A. This installation is suitable if you only use domestic hot water.
B. This requires the installation of a small water tank, OWT, to prevent the heat pump starting and
stopping.
C. This installation is directly on a hydronic system without accumulator tank and contains manifolds
that control underfloor heating, radiators, etc.
In general, hydronic systems must always be bled thoroughly before commissioning.