Extraflame TERMOPELLET TC30 Installer Manual page 24

* For a correct functioning of the auxiliary boiler, position the open expansion vessel at a height which
guarantees a pressure higher than the pressure switch minimum one.
** The automatic thermostatic mixing valve fi nds applications in solid fuel boilers as it prevents cold water
return in the exchanger.
24
Numbering
B Domestic storage tank
CA Auxiliary boiler
CB Biomass boiler
CE Electro-thermal controls
CM Flow collector
CR Return collector
EV Electro-valve
F Flow meter
GCA Automatic loading unit
M Manometer
M1 Flow area 1
M2 Flow area 2
PCA Auxiliary boiler pump
P Puff er
PR Circulation pump
PS Solar pump
R1 Return area 1
R2 Return area 2
S Solar
SF Venting
SP Plate exchanger
T Thermometer
TS Domestic terminals
VM Mixing valve
VEAC* Boiler open expansion vessel
VECC Boiler closed expansion vessel
VECB Domestic storage tank closed expansion vessel
VECP Puff er closed expansion vessel
VECS Solar closed expansion vessel
VMS Domestic mixing valve
VMTA 55°C** Automatic thermostatic mixing valve
VR Non-return valve
VSP Pressure safety valve
VST Heat discharge valve
Symbols
Component description
Chapter 4
HYDRAULIC PLANT CONNECTION