HR EVO 170 - 250
use and maintenance manual
Pag.53
Rev.1 16/03/2018
ENG
jeopardise his/her own safety and that of others;
•
use fuels other than fire wood and those allowed for lighting;
•
use the boiler as an incinerator;
•
use flammable or explosive substances near the boiler during operation;
•
use the boiler with the door open and/or with the glass ruined or broken;
•
close the combustion air and smoke outlet openings, whatsoever;
•
use the boiler to dry laundry;
•
replace or change some of the boiler parts.
TECHNICAL CHARACTERISTICS
The boiler works exclusively on pellets and enables easy installation with the heating and DHW system. Its automatic control systems
ensure optimum thermal efficiency and complete combustion; there are also systems to ensure safe operation for the internal
components and the user. This unit must only be used for heating water to a temperature lower than boiling point.
When correctly installed, the unit works in any outside climatic conditions; in any case, in critical conditions (strong wind, frost, etc. )
the safety systems can cut in and shut down the boiler.
The boiler comes complete with a fume extractor, pellet feed gearmotor, , high efficiency pump for the heating circuit and of all the
control and safety components. During operation the unit generates very little noise, with levels between 38 and 42 dB.
The data shown here is provided as a guideline and is not binding, and may change based on what type and quality of pellet is used.
Ravelli reserves the right to make any changes in order to improve product performance.
CHARACTERISTICS
Unit of
measurement
HR EVO 170
HR EVO 250
Boiler class (EN 303-5:2012)
5
Heating input reduced - nominal
kW
4,4 - 17,0
4,4 - 23,2
Heating output reduced - nominal
kW
4,2 - 16,2
4,2 - 22,0
Efficiency
%
95,1 - 95,7
95,1 - 94,6
Heatable volume**
m
3
390
530
Fuel consumption red. - nom
kg/h
0,9 - 3,5
0,9 - 4,8
Hopper capacity
kg
48
Autonomy red. - nom.
h
53 - 14
53 - 10
Max water working pressure
bar (MPa)
3 - ( 0,3 )
Water content
l
25
Expansion tank
l
8 (1 bar)
Max water temperature
°C
80
Recommended draught
Pa (mbar)
10 - 14
( 0,10 - 0,14 )
Flue temperature red.-nom.
°C
53,8 - 102,8
53,8 - 128,1
Flue mass flow rate red.-nom.
g/s
4,0 - 8,2
4,0 - 10,8
Flue socket
mm
100
Electrical consumption during ignition*
W
420
Electrical consumption during nominal
heat output*
W
100
Electrical consumption during reduced
heat output*
W
70
Stand-by electrical power consumption*
W
3
Max pump electrical consumption
W
45
Electrical connection
V - Hz
230V - 50Hz - 2A
∆T
Loss of load
mbar
kPa
HR EVO 170
10 K (23,1 l/min) 178,6
17,9
20 K (11,6 l/min) 44,63
4,5
HR EVO 250
10 K (31,4 l/min) 314
31,4
20 K (15,7 l/min) 78,5
7,8
0
10
20
30
40
0
100
200
300
400
0
10
20
30
40
Δp
(kP
a)
Δp
(m
ba
r)
Q (l/min)
Summary of Contents for HR EVO 170
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