hergom H-03/70 C Instructions D'installation, D'utilisation Et D'entretien page 21

2.4 - Installation with closed expansion tank and underfloor heating - outline
A Valve
B Minimum thermometer
C Circulator
D Closed expansion vessel
E Bleeder
F Safety valve (3 BAR)
G Heater drainage
H Auto filling and anti-backflow valve
Industrias Hergom S.A. declines all liability
connected with the installation. The installer
must comply with local regulations in order to
install the system correctly.
J Emptying valve
K Adjustment
L 3-way mixing valve
M Temperature Probe
N Safety thermostat at 45 °C
P Underfloor Heating
R Thermal security valve