Wolf CGU-2-18 Installation And Maintenance Instructions Manual page 8

Differential
pressure switch
Limit thermostat
Flow sensor 2
Flow sensor 1
Monitoring
electrode
Air vent
Three-way
diverter valve
Heating circuit
pump
Internal filling
equipment (optional)
not <DE><AT>
DHW
Flow & temperature
sensor
Bypass
8
Layout CGG-2(K) 18/24
HZ - VL
HZ - RL
LAF connection
Flue gas fan
with speed
regulation
Flue gas
collector
box
Heating water heat
exchanger
Combustion
chamber
Ignition
electrode
Gas burner
Expansion vessel
Safety valve
Heating circuit
strainer
Gas combination
valve
Drain valve
Cold water strainer
with throughput
limiter
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