12
4.3
Hydraulic connection diagram
Fig. no. 7
Hydraulic diagram with HW preparation– Pump heating circuit
Fig. no. 8
Hydraulic diagram without HW preparation– Pump heating circuit
Legend to Fig. no. 7 and 8:
A6
QAA 88 device
BT1
Safety thermostat
B2
Boiler outlet temperature sensor
B3
HW temperature sensor
B5
Fuel feeder temperature sensor
B9
Outside temperature sensor
EX
Expansion vessel
M1
Fuel feeder motor
M2
Air fanmotor
PV
Safety valve
Q1
Boiler primary circuit pump
Y3
HW heating three-way valve
V1
Thermostatic valve
ZK
Clack valve
