r40
Cascade installation back to back
 

Quality leader in wall-hung condensing boilers


Residential constructions require high power condensing boilers. That’s the reason why, R 40, with its 145 kw, is perfect for this kind of application. Among the advantages, R40 provides more performance with less equipment. But even more important is the high and constant energy performance with efficiency higher than 110%. In this way, the double-stranded stainless steel heat exchanger sets a new standard. R40 is synonymous with efficiency and durability over a period of decades.

Solutions for every installation situation


R 40 can be quicly installed according to the “Plug and Play” principle. The presized modules, hydraulic side, have almost unlimited possibilities for adaptation: line wall mounted installation, line free standing installation, back to back installation. With the new condensing gas boiler, RENDAMAX offers a solution perfect for any situation and any constructive power requirement in 460 variations of installation.

Prepared for a long service life


Stainless steel provides very high durability and very long life cycle. In fact, the high quality of the material makes the heat exchanger much less sensitive to water quality in terms of hardness and pH, keeping performances and efficiency at constant level. over the years.

LMS control unit

Built-in easy-to-use control panel with completely digital LMS climatic heating controller
  • Combustion and heating control in only one electronic unit
  • Backlit display with status and function indication (uncoded description)
  • Preset nominal values, heating programmes
  • Automatic switch between day-light saving time and solar time
  • Individual time programmes for each heating and hot water circuit
  • Summer programme, reduced economy programme with antifreeze protection
  • Separate keys for heating, hot water, manual and emission control operation modes
  • Failure-free programming clock
  • A room unit can be connected to each heating circuit
  • Heating optimization (with rapid action)
  • Built-in operation time counter (hours)
  • Anti-Legionnaire’s disease circuit (for thermal disinfection of drinking water)
  • Boiler and system antifreeze protection
  • Programmable multi-function output for hot water solar production, return water temperature increase or hot water circulation pump
  • Cascade control

  • Stainless steel heat exchanger
  • High modulation level
  • Minimum emission values with state-of-the-art combustion technology (Pre Mix)
  • Forced draught operation
  • Flue gas low temperature (possible use of flue made of synthetic material)
  • Flue gas temperature monitoring
  • Easy maintenance

Model   50 65 85 100 120 145
General Data
Nominal heat output at 80/60ºC kW 45.7 60.8 81.1 92.9 111.6 132.2
Minimum heat output at 80/60ºC kW 7.7 10.1 13.4 15.6 18.7 23.3
Nominal heat output at 75/60ºC kW 45.8 60.9 81.3 93.1 111.8 132.5
Minimum heat output at 75/60ºC kW 7.7 10.1 13.4 15.6 18.7 23.3
Nominal heat output at 40/30ºC kW 48 63.9 85.3 100 120 142.3
Minimum heat output at 40/30ºC kW 8.4 11.1 14.8 17.2 20.6 25.6
Nominal heat input Hi max kW 46.9 62.4 83.3 95.2 114.3 135.5
Minimum heat input Hi min kW 7.8 10.4 13.8 16 19.2 23.9
Max. condensate (full load @ 40/30ºC, 20ºC ambient) l/h 2.6 3.5 4.8 6.4 7.7 9.1
Noise level at 1 meter distance (room sealed) dB(A) 56 56 56 56 56 56
Noise level at 1 meter distance (non-room sealed) dB(A) 50 50 50 50 50 50
PH value condensate - 3.2 3.2 3.2 3.2 3.2 3.2
CE certification code   CE-0063CM3576          
Efficiencies
Annual efficiency (NNG 75/60ºC) % 106.2 106.2 106.2 106.2 106.2 106.2
Annual efficiency (NNG 40/30ºC) % >110 >110 >110 >110 >110 >110
Standstill losses (Twater = 70ºC) % 0.2 0.2 0.2 0.2 0.2 0.2
Gas Consumption data
Gas consumption H-gas max (10,9 kWh/m3) m3/h 4.3 5.7 7.6 8.7 10.5 12.4
Gas consumption H-gas min (10,9 kWh/m3) m3/h 0.7 1 1.3 1.5 1.8 2.2
Gas pressure H-gas mbar 20 20 20 20 20 20
Maximum gas pressure mbar 50 50 50 50 50 50
Fluegas data
Fluegas temperature at 80/60ºC max °C 76 76 76 76 76 76
Fluegas temperature at 80/60ºC min °C 63 63 63 63 63 63
Fluegas temperature at 40/30ºC max °C 55 55 55 55 55 55
Fluegas temperature at 40/30ºC min °C 39 39 39 39 39 39
Fluegas quantity max/min m3/h 89 119 159 178 213 253
Fluegas quantity max/min m3/h 14 19 25 29 35 44
CO2 level gas G20/G25 max % 8.5 8.5 8.5 8.7 8.7 8.7
CO2 level gas G20/G25 min % 8.5 8.5 8.5 8.5 8.5 8.5
NOx level mg/kWh 39 39 39 39 39 39
CO level max/min mg/kWh 98 98 98 98 98 98
CO level max/min mg/kWh 7 7 7 7 7 7
Max. permissible flue resistance max/min Pa 150 150 150 150 200 200
Max. permissible flue resistance max/min Pa 15 15 15 15 15 15
Hydraulic data
Water volume l 4 4 4.7 6.5 8 9.4
Water pressure max/min bar 8 8 8 8 8 8
Water pressure max/min bar 1.5 1.5 1.5 1.5 1.5 1.5
Safety Thermostat °C 100 100 100 100 100 100
Maximum temperature setpoint °C 90 90 90 90 90 90
Nominal water flow at dT=20K m3/h 1.9 2.6 3.4 4 4.8 5.6
Hydraulic resistance at nominal water flow kPa 9 16 29 15 22 34
Electrical data
Mains connection fuse A 10 10 10 10 10 10
IP class - IPX4D IPX4D IPX4D IPX4D IPX4D IPX4D
Power consumption boiler max (excl. pump) W 98 98 167 195 228 248
Power consumption boiler min (excl. pump) W 26 26 38 30 36 44
Power consumption 3-Step pump (opt) W 150 150 205 150 210 385
Ionisation current minimum μA 3 3 3 3 3 3
Weight
Weight (empty) kg 60 60 68 80 90 97


Dimensions / Connections
Model     50 65 85 100 120 145
Width B mm 490 490 490 590 590 590
B1 mm 140 140 140 140 140 140
B2 mm 245 245 245 295 295 295
Depth D mm 500 500 500 600 600 600
Height (without connections) H mm 810 810 810 950 950 950
Water delivery and return W1 , W2 R /DN 1 ¼” 1 ¼” 1 ¼” 1 ½” 1 ½” 1 ½”
Gas G R /DN ¾” ¾” ¾” 1” 1” 1”
Flue gas F ɸmm 100 100 100 100 100 130
Fresh air A ɸmm 100 100 100 100 100 130
Condensate hose K ɸmm 25 25 25 25 25 25
Safety Valve (accessories) S              
Drain and fill tap (accessories) L              
Wall support Z