1.1
INTRODUCTION
The
“RX 26 BF”
boilers are the ideal solu-
tion for heating small and medium houses.
They comply with the european directives
9 0 / 3 9 6 / C E E ,
8 9 / 3 3 6 / C E E ,
9 2 / 4 2 / C E E , 7 3 / 2 3 / C E E a n d t h e
europen specification EN 483.
These appliances can be fired by natural
g a s ( G 2 0 ) a n d b u t a n e g a s ( G 3 0 ) o r
propane gas (G31).
The instructions given in this manual are
provided to ensure proper installation and
perfect operation of the appliance.
37
1
DESCRIPTION OF THE BOILER
1.2
DIMENSIONS
Fig. 1
R
C.H. return
3/4” (UNI-ISO 228/1)
M C.H. flow
3/4” (UNI-ISO 228/1)
G
Gas connection
3/4” (UNI-ISO 228/1)
CA Intake duct ø 80
CS Outlet duct ø 80
Coaxial duct ø 60/100
1.3
TECHNICAL FEATURES
RX 26 BF
Heat output (min.-nom.)
kW
23,2 - 31,0
kcal/h
19.950 - 26.660
Heat input (min.-nom.)
kW
26,2 - 34,0
kcal/h
22.530 - 29.240
Cast iron sections
n°
4
Water content
l
15
Power consumption
W
155
Maximum water head
bar
4
Maximum temperature
°C
85
Expansion vessel
Water content
l
10
Preloading pressure
bar
1
Smokes temperature(min.-max)
°C
177 - 200
Smokes flow (min.-max)
gr/s
20,5 - 18,7
Category
II
2H3+
Type
C
12-32-42-52-82
Weight
kg
165
RX 26 BF
Main burner nozzles
Quantity
n°
3
Methane
ø mm
2,90
G30 - G31
ø mm
1,70
Gas consumption (min.-max) *
Methane
m
3
st/h
2,77 - 3,60
Butane (G30)
kg/h
0,81 - 1,05
Propane (G31)
kg/h
1,07 - 1,39
Burner gas pressure (min.-max)
Methane
mbar
7,1 - 12,0
Butane (G30)
mbar
17,8 - 28,1
Propane (G31)
mbar
17,8 - 35,9
Gas supply pressure
Methane
mbar
20
Butane (G30)
mbar
30
Propane (G31)
mbar
37
*
The gas consumptions refer to the calorific value at standard conditions at 15°C - 1013 mbar
