Hydraulic Specifications; Expansion Vessel - Biasi RIVA ADVANCE HE M110.24SM User Manual And Installation Instructions

Technical information
4.5

Hydraulic specifications

kPa bar
0.6
60
50
0.5
40
0.4
30 0.3
20 0.2
10 0.1
0 0.0
0 200 400
Fig. 4.3 model M110.24SM/...
kPa bar
0.6
60
50 0.5
40
0.4
30 0.3
20
0.2
10 0.1
0 0.0
0 200 400
Fig. 4.4 model M110.32SM/...
The hydraulic specifications in Fig. 4.3 and
Fig. 4.4 represent the pressure (available head for
the central heating system) as a function of the
flow rate.
The load loss due to the boiler has already been
subtracted.
18
600 800 1000 1200 1400
600 800 1000 1200 1400
Operation of integral By---pass valve
The boiler is fitted with an automatic by--- pass
valve (44 on page 12), which protects the primary
heat exchanger.
The integral automatic by --- pass will ensure a mini-
mum flow through the primary heat exchanger of
the boiler in the event that the flow around the cen-
tral heating circuit is restricted due to closure of
thermostatic or system control valves.
4.6

Expansion vessel

Note: this boiler is designed for operation only
in a sealed central heating system
l/h
The height difference between the pressure relief
valve and the highest point in the system may be
7m at most.
For greater differences, increase the pre--- load
pressure in the expansion vessel (43 on page 12)
and the system, when cold, by 0.1 bar for each
additional 1m.
Capacity
Pre--- load pressure
Maximum volume of water
in the system *
Tab. 4.1
l/h
* Where conditions are:
--- Average maximum temperature of the system
is 80°C
--- Initial temperature when filling up the system is
10°C
For systems with volumes greater than 154l, an
additional expansion vessel must be provided.
l 7,0
kPa 100
bar 1,0
l 154