Ariston GENUS HE 35 Plus Installation And Servicing Instrucnion page 21

Operating Pressure
m/H O
mCE Minimum flow (thermostatic valves closed)
2
6
5
4
3
2
1
0
100
1 3
2
A - Gas Inlet
B - C.H. Return
C - C.H. Flow
D - D.H.W. Secondary Return
E - D.H.W. Flow
F - C.W. Inlet
1 - Gas Meter Inlet Cock
2 - Gas Meter
3 - Gas Meter Outlet Cock
4 - Internal Gas Cock
Residual Head of the Boiler ΔT = 20
GV
300 500
200
400
16
7
12
A B C D E F
Pressure
V
13 Reducing Valve
5 6
4
Other
Users
8
PV
700
800
600
Cold Water Inlet
9
8
10
11
5 - Appliance Gas Inlet Cock
6 - Cold Water Inlet Cock
7 - D.H.W. Expansion Vessel
8 - Cock
9 - Secondary Return Pump
10 - Thermostat
11 - Time Control Clock
12 - T&P Valve
13 - Tundish
o
C
1100
900
1000 1200
l/h
Fig. 10.5
Drain Tap
(at lowest point)
Fig. 10.6
21