Designs
Connection and wiring diagrams
%
Cylinder temperature sensor
(gas fired central heating
boiler)
sÖ
Internal circulation pump
dG
Gas solenoid valve
fJ
Temperature limiter
42
(cont.)
a-ÖaBL Interlocking of extractors via
external extension H3
aVL
Flow switch
aNS
Flue gas monitoring sensor
a:Ö
Modulation coil