23.3 Heating mode (Heating and cooling)
N
I
G
O
F
A : Chilled water or hot water circuit
C : Water filling
D : Expansion vessel
E : Control valve
F : Drain
K
M
G : Shut-off valve
I : Air bleed valve
J : Water filter (compulsory)
K : Water hose (compulsory)
L : Thermowell
EN - 23
A
J
P
L
E
D
M : Well discharge
N : Hydraulic valve
O : Cleanable exchanger
P : Safety valve
EN
C