Robur Next-R - Page 24

Features and technical data
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R15 R20 R30 R40 R50 R60 R80
Heating mode
Heat input
nominal (1013 mbar - 15 °C) (1) kW 15,5 20,5 28,0 38,3 49,0 69,0 84,0
minimum (1) kW 10,3 13,2 16,8 23,0 31,0 41,4 54,0
Heat output
nominal kW 14,1 18,7 25,5 35,0 44,6 62,8 76,4
minimum kW 9,9 12,7 16,3 22,2 30,3 40,4 52,6
Eciency
nominal heat input % 91,0 91,5 91,0
minimal heat input % 96,0 96,5 96,7 96,5 97,8 97,5 97,4
useful at 100% heat input % 90,7 91,2 90,6 90,5 90,6
Heat losses
to ue in operation % 9,00 8,50 9,00
to casing in operation % 0,30 0,40 0,50 0,40
with burner o % 0,25
Temperature rise
nominal heat input K 18,6 22,0 25,0 24,8 26,4 27,4 25,0
minimal heat input K 13,0 15,0 15,9 15,7 18,0 17,6 17,2
lenght of throw (residual speed < 0,5 m/s) (2) m 13,0 15,0 18,0 20,0 25,0 28,0 40,0
Ambient air temperature
(dry bulb)
maximum °C 35
minimum °C -15 0
Electrical specications
Power supply
voltage V 230
type - single-phase
frequency Hz 50
Electrical power absorption nominal kW 0,18 0,21 0,30 0,34 0,41 0,60
fuse A 6,3
Degree of protection
fan motor IP 54
appliance IP 20
Installation data
Gas consumption
G20 natural gas (nominal) m³/h 1,64 2,17 2,96 4,05 5,18 7,30 8,89
G25 (nominal) m³/h 1,91 2,52 3,45 4,71 6,03 8,49 10,34
G25.1 (nominal) m³/h 1,91 2,52 3,44 4,71 6,02 8,48 10,32
G25.3 (nominal) m³/h 1,86 2,47 3,37 4,61 5,90 8,30 10,11
G27 (nominal) m³/h 2,00 2,65 3,61 4,94 6,33 8,91 10,84
G2.350 (nominal) m³/h 2,28 3,01 4,12 5,63 7,20 10,14 -
G30 (nominal) kg/h 1,22 1,62 2,21 3,02 3,86 5,44 6,63
G31 (nominal) kg/h 1,20 1,59 2,17 2,98 3,81 5,36 6,53
Air ow nominal (Delta T = 15 °C) m³/h 2222 2460 2900 4010 4770 6470 8670
Gas connection
type - M F
thread “ 3/4
Flue gas exhaust
diameter (Ø) mm 80
residual head Pa 70 90 80 100 130
type of installation - B23, C13, C33, C53, C63
Combustion air intake
connection
diameter (Ø) mm 80
recommended height m 2,2 2,5 3,0 ÷ 3,5
sound power L
w
(max) dB(A) 74,5 75,5 77,0 78,0 81,0 82,0 90,5
sound pressure L
p
at 5 metres (max) dB(A) 52,5 53,5 55,0 56,0 59,0 60,0 68,5
Dimensions
width mm 678 734 928 1119 1319
depth mm 557 731 746 731 746
height mm 480 777
Weight in operation kg 26 28 51 56 64 78 91
General information
number of heat exchangers - 1 2 3 5 6 8
type of heat exchangers - pipe tower
number of fans - 1 2
(1) Relative to NCV (net caloric value).
(2) Values measured in an open area; in a real installation, the thermal ow may reach greater distances than those given here (depending on the height of the ceiling
and its thermal insulation).
Centrifugal fan models
R30 C R40 C R50 C R80 C
Electrical specications
Electrical power absorption nominal kW 0,38 0,68 1,38 1,40
fuse A 6,3 10,0