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					                                     Technical specifications
Type                                                     R301      R302      R303      R304      R305      R306      R307

Nominal heat output                              kW       70        86        114       139       185      230       274
Nominal heat input                               kW       74        91        121       147       194      243       289
Minimal heat input                               kW       16        20        23        29        39       49        58

Gas consumption
         natural gas H (10.9 kWh/m3)             m3/h    6.97      8.35      11.10     13.49     17.80     22.29     26.51
          natural gas L (8.7 kWh/m3)             m3/h    8.51      10.46     13.91     16.90     22.30     27.93     33.22
              propane (12.8 kWh/kg)              kg/h    5.78       7.11     9.45      11.48     15.16     18.98     22.58

Gas inlet pressure
             natural gas (min./max.)             mbar   17 – 25   17 – 25   17 – 25   17 – 25   17 – 25   17 – 25   17 – 25
                propane (min./max.)              mbar   30 – 50   30 – 50   30 – 50   30 – 50   30 – 50   30 – 50   30 – 50

Water capacity                                   dm3      13        15        17        19        36        39        42
Max. working pressure                            bar       6         6        6          6         6         6         6

Flue connection                        D         mm       100       100       130       150       180      200       200
Air supply                            D1         mm       100       100       125       125       150      180       180

Gas connection                          G                R 3/4"    R 3/4"    R 3/4"    R 3/4"    R 1"     R 11/2"   R 11/2"

Water connections                      W                R 11/2"   R 11/2"   R 11/2"   R 11/2"    R2"       R2"       R2"

Power supply                                     V      230 1N~   230 1N~   230 1N~   230 1N~   230 1N~   230 1N~   230 1N~
Frequency                                        Hz       50        50        50        50        50        50        50
Fuse                                             A         10        10        10        10        10        10        10

Dimensions                             B         mm      500       600       700       800       600       700       800                            Rendamax: maximum efficiency
                                      B1         mm      360       420       490       560       470       550       600           Rendamax has been producing (condensing) boilers, water heaters and
                                      H1         mm      160       160       170       176       197       197       197
                                                                                                                                   swimming pool heaters for professional use since 1968. In all places where
                                      H2         mm      497       488       501       486       556       549       537
                                      H3         mm      943       943       921       921       921       921       921           heating must be reliable, innovative and efficiency prevails Rendamax products
                                       L         mm      685       685       685       685       895       895       895           have proved their value over and over.
                                      L1         mm       50        50        50        50        85        85        85
                                      L2         mm      160       160       160       160       160       160       160
                                                                                                                                   During the whole process from consulting to installation and service Rendamax
                                      L3         mm       80        80        90        90       100       100       100
                                      L4         mm      445       445       445       445       655       655       655           will deliver an optimum of efficiency and care – anywhere.
                                      L5         mm      525       525       525       525       735       735       735
                                      L6         mm       95        95       135       120       130       120       120
                     +
Boiler weight, empty _ 5%                        kg       120       140       160       180      250       270       290




    (Changes can be made without any prior notice)



                                                                                                                                                                Rendamax bv                                        innovative heating technology
                                                                                                                              Hamstraat 76, 6465 AG Kerkrade, PO Box 1035, 6460 BA Kerkrade, The Netherlands
                                                                                                                               Phone: +31 (0)45-5669 900, Fax: +31 (0)45-5669 910, E-mail: info@rendamax.com
                                                                                                                                                               DOC 615 - 05/06
                                                                                                                                                                                                                                                                                                                                                                              Technical specifications
                                                     The R500 and R300:                                                                                                                                                                                                                                                                       Type                                           R501      R502      R503      R504      R505      R506      R507

                                             more compact, faster and more efficient                                                                                                                                                                                                                                                           Nominal heat output
                                                                                                                                                                                                                                                                                                                                              Nominal heat input
                                                                                                                                                                                                                                                                                                                                                                                     kW
                                                                                                                                                                                                                                                                                                                                                                                     kW
                                                                                                                                                                                                                                                                                                                                                                                              62
                                                                                                                                                                                                                                                                                                                                                                                              63
                                                                                                                                                                                                                                                                                                                                                                                                        80
                                                                                                                                                                                                                                                                                                                                                                                                        82
                                                                                                                                                                                                                                                                                                                                                                                                                  103
                                                                                                                                                                                                                                                                                                                                                                                                                  105
                                                                                                                                                                                                                                                                                                                                                                                                                            124
                                                                                                                                                                                                                                                                                                                                                                                                                            126
                                                                                                                                                                                                                                                                                                                                                                                                                                      165
                                                                                                                                                                                                                                                                                                                                                                                                                                      168
                                                                                                                                                                                                                                                                                                                                                                                                                                               206
                                                                                                                                                                                                                                                                                                                                                                                                                                               210
                                                                                                                                                                                                                                                                                                                                                                                                                                                         247
                                                                                                                                                                                                                                                                                                                                                                                                                                                         252
                                                                                                                                                                                                                                                                                                                                              Minimal heat input                     kW       14        18         21        25        34      42         51

                                                                                                                                                                                                                                                                                                                                              Gas consumption
                                                                                                                                                                                                                                               Optional a bypass is available. This bypass system                                                      natural gas H (10.9 kWh/m3)   m3/h    5.78      7.52      9.63      11.55     15.41     19.27     23.12
                                                                                                                                                                                                                                                                                                                                                        natural gas L (8.7 kWh/m3)   m3/h    7.24      9.43      12.07     14.48     19.31     24.14     28.97
                                         Heating can take place in an even more                                                                                                                                                                guarantees the minimum flow over the boiler. The
                                                                                                                                                                                                                                                                                                                                                            propane (12.8 kWh/kg)    kg/h    4.92      6.41      8.20      9.84      13.13     16.41     19.69
                                         compact, faster and more efficient way,                                                                                                                                                                complete return water volume passes the condensor
                                                                                                                                                                                                                                                                                                                                              Gas inlet pressure
                                         that is to say: with the Rendamax R500                                                                                                                                                                without mixing with any other water. In comparison
                                                                                                                                                                                                                                                                                                                                                           natural gas (min./max.)   mbar   17 – 25   17 – 25   17 – 25   17 – 25   17 – 25   17 – 25   17 – 25
                                         and R300 boilers. It is a new line of high-                                                                                                                                                           with open header systems this bypass system leads                                                              propane (min./max.)    mbar   30 – 50   30 – 50   30 – 50   30 – 50   30 – 50   30 – 50   30 – 50
                                         efficiency boilers that combine                                                                                                                                                                        to a considerably higher annual efficiency.
                                                                                                                                                                                                                                                                                                                                              Water capacity                         dm3      13        15        17        19        36        39        42
                                         purposeful heating with the highest                                                                                                                            Efficiency R300                                                                                                                       Max. working pressure                  bar       6         6        6          6         6         6         6
                                                                                                                                                                                                         official measurements Gastec
                                         efficiency, the lowest energy                                                                                                                             111
                                                                                                                                                                                                 110                                                                                                                                          Flue connection                   D    mm       100       100       130       150       180      200       200
                                         consumption and the lowest                                                                                                                              109                                                                                                                                          Air supply                       D1    mm       100       100       125       125       150      180       180
                                                                                                                                                                                                 108                                                                     Weather
                                         environmental pressure. With this                                                                                                                                                                                               compensated




                                                                                                                                                                    Efficiency (nett CV/PCI) %
                                                                                                                                                                                                 107
                                                                                                                                                                                                                                                                                                                                              Gas connection                    G            R 3/4"    R 3/4"    R 3/4"    R 3/4"    R 1"     R 11/2"   R 11/2"
                                                                                                                                                                                                 106
                                         innovative heating technology                                                                                                                           105
                                                                                                                                                                                                                                                                        40-20

                                                                                                                                                                                                                                                                        50-30                                                                 Water connections                 W           R 11/2"   R 11/2"   R 11/2"   R 11/2"    R2"       R2"       R2"
                                         Rendamax has set the trend for the                                                                                                                      104
                                                                                                                                                                                                 103                                                                    60-40
                                         future. On all fronts existing records are                                                                                                              102
                                                                                                                                                                                                                                                                                                                                              Power supply                            V     230 1N~   230 1N~   230 1N~   230 1N~   230 1N~   230 1N~   230 1N~
                                                                                                                                                                                                 101                                                                    70-50                                                                 Frequency                               Hz      50        50        50        50        50        50        50
                                         being broken! For example, unnecessary                                      Maximum innovation                                                          100                                                                    80-60                                                                 Fuse                                    A        10        10        10        10        10        10        10
                                         loss of energy is definitely a thing of the                                  Just like our other boiler series, also                                      99                                                                efficiency according
                                                                                                                                                                                                                                                                    DIN 4702 part 6/8
                                                                                                                                                                                                  98
                                                                                                                                                                                                                                                                                                                                              Dimensions                        B    mm      500       600       700       800       600       700       800
                                         past, because the capacity of R500 and                                      these boilers are continuously variable                                      97                                                                    Temperature-
                                                                                                                                                                                                  96
                                                                                                                                                                                                                                                                        pair 75/60                                                                                             B1    mm      360       420       490       560       470       550       600
                                         R300 boilers can be geared to the                                           modulating instantaneous water boilers                                       95                                                                    Temperature-                                                                                           H1    mm      160       160       170       176       197       197       197
                                                                                                                                                                                                                                                                        pair 40/30
                                                                                                                                                                                                  94
                                         demand for heat in a fast and perfect                                       with a regulating range of at least 1:5. In                                                                                                                                                                                                               H2    mm      497       488       501       486       556       549       537
                                                                                                                                                                                                        25      35       45       55      65       75   85   95
                                         way! In addition, this generation of                                        the centre of the boilers there is a water-                                                                                                                                                                                                               H3    mm      943       943       921       921       921       921       921
                                                                                                                                                                                                                                    Capacity [%]
                                                                                                                                                                                                                                                                                                                                                                                L    mm      685       685       685       685       895       895       895
                                         instantaneous water boilers of                                              cooled finned tube pre-mix burner. This
                                         Rendamax is incredible compact: the                                         is a unique example of technology that                                                                                                         The Rendamax R500 and R300                                                                                 L1
                                                                                                                                                                                                                                                                                                                                                                               L2
                                                                                                                                                                                                                                                                                                                                                                                     mm
                                                                                                                                                                                                                                                                                                                                                                                     mm
                                                                                                                                                                                                                                                                                                                                                                                              50
                                                                                                                                                                                                                                                                                                                                                                                             160
                                                                                                                                                                                                                                                                                                                                                                                                        50
                                                                                                                                                                                                                                                                                                                                                                                                       160
                                                                                                                                                                                                                                                                                                                                                                                                                  50
                                                                                                                                                                                                                                                                                                                                                                                                                 160
                                                                                                                                                                                                                                                                                                                                                                                                                            50
                                                                                                                                                                                                                                                                                                                                                                                                                           160
                                                                                                                                                                                                                                                                                                                                                                                                                                      85
                                                                                                                                                                                                                                                                                                                                                                                                                                     160
                                                                                                                                                                                                                                                                                                                                                                                                                                                85
                                                                                                                                                                                                                                                                                                                                                                                                                                               160
                                                                                                                                                                                                                                                                                                                                                                                                                                                          85
                                                                                                                                                                                                                                                                                                                                                                                                                                                         160
                                         smallest types require less than 0.5 m2                                     has been developed and patented by                                                                                                                                                                                                                        L3    mm       80        80        90        90       100       100       100
                                         of space. They can even easily fit in a                                      Rendamax. It realises a minimum                                                                                                         • High efficiency of 108.5% and 107%     • Unique Rendamax protection and                                          L4    mm      445       445       445       445       655       655       655
                                                                                                                                                                                                                                                                                                                                                                               L5    mm      525       525       525       525       735       735       735
                                         broom cupboard!                                                             emission of NOx, CO and CO2 and                                                                                                           respectively                            control system
                                                                                                                                                                                                                                                                                                                                                                               L6    mm       95        95       135       120       130       120       120
                                                                                                                     guarantees a maximum energetic                                                                                                          • Capacity ranging from 62 to 274 kW    • Stainless steel burner and heat
                                                                                                                                                                                                                                                                                                                                                                   +
                                                                                                                                                                                                                                                                                                                                              Boiler weight, empty _ 5%               kg      120       140       160       180      250       270       290
                                                                                                                     efficiency. Through design optimisations                                                                                                 • Very compact                            exchangers
                                    Efficiency R500                                                                  it is even possible to obtain an even                                                                                                   • Cascade design available              • Can be recycled
                                     official measurements Gastec

                              111                                                                                    more compact and more economical                                                                                                        • Low NOx, CO and CO2                   • User friendly and little maintenance
                             110
                             109                                                                   Weather
                                                                                                                     version of the already small and                                                                                                        • Continuously variable modulation      • Simple to install and operate
                                                                                                   compensated
Efficiency (nett CV/PCI) %




                             108
                             107                                                                                     economical Rendamax high efficiency                                                                                                        with a regulating range of at least   • Suitable for natural gas and propane
                                                                                                  40-20
                             106
                             105                                                                  50-30              boilers. Moreover, it is also a version that                                                                                              1:5                                   • Can be optionally applied for
                             104
                             103
                                                                                                  60-40              can be optimally applied for preparing                                                                                                  • Patented water-cooled finned tube        preparing hot water
                             102                                                                  70-50
                                                                                                                     hot water. As a matter of fact, it can do                                                                                                 pre-mix burner                        • Noise level 51 dB (A)
                             101
                                                                                                  80-60
                             100                                                              efficiency according
                                                                                              DIN 4702 part 6/8
                                                                                                                     this without losing one fraction of the                                                                                                 • Fast water delivery on the basis of   • Requires less than 0.5 m2 of floor
                              99
                              98                                                                  Temperature-
                                                                                                  pair 75/60
                                                                                                                     efficiency, which amounts to 108.5 and                                                                                                     through-flow principle                   space
                              97
                              96                                                                  Temperature-
                                                                                                  pair 40/30
                                                                                                                     107 respectively for the R500 and R300.                                                                                                 • Very small water content              • Optional bypass
                              95
                                    25      35       45       55      65       75   85   95
                                                                                                                     The capacity varies from 62 to 274 kW.                                                                                                  • LCD screen
                                                                Capacity [%]