Commercial / industrial boilers
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1 Commercial / industrial boilers up to 1017 kW Steel boilers MKS Steel boilers with burner MUS Cast iron boilers MK-1/MK-2 Cast iron boilers with burner MU-1 Gas-fired boilers NG-31E/NG-31ED The competence brand for energy saving systems

2 Steel boiler MKS/MUS MUS with forced draught oil burner 70-100 kW MKS without forced draught oil burner 70-550 kW . MUS with forced draught oil burner for two-stage operation, design approved in accordance with DIN EN 267 for domestic fuel oil, ex-works adjusted during operation, with special mixing device for low NOX-emissions . High normative efficiency: up to 94% . Large heat exchanger surfaces made of smooth tubing for condensationfree low-temperature operation . Stainless steel turbulators inserted into heat exchanger surfaces, low flue-gas temperatures . Fully water-jacketed...

4 Cast-iron boiler for pressure firing in accordance with DIN 4702/EN 303 and valid EC directives, for low-temperature operation. Cast iron boiler MU-1/MK-1 MU-1 with forced draught oil burner 50-110 kW MK-1 without forced draught oil burner 50-300 kW . MU-1 with forced draught oil burner for two-stage operation, design approved in accordance with DIN EN 267 for domestic fuel oil, ex-works adjusted during operation, with special mixing device for low NOX-emissions . High normative efficiency: up to 94% . Boiler elements made of durable, corrosion-resistant cast-iron . Ideally proportioned...

5 Technical Data TYPE MU-1/MK-1 80 110 140 180 220 260 Output range MK-1 kW 50-100 80-130 110-170 140-210 180-250 220-300 Recommended range MK-1 kW 50-80 80-110 110-140 140-180 180-220 220-260 Recommended range MU-1 kW 50-80 80-110 - - - - Adjusted output MU-1 kW 80 110 - - - - Height/height without casing A mm 1220/1148 1220/1148 1220/1148 1220/1148 1220/1148 1220/1148 Width/width without casing B mm 825/585 825/585 825/585 825/585 825/585 825/585 Length C mm 1125 1285 1445 1605 1765 1925 Total height with control system D mm 1380 1380 1380 1380 1380 1380 Depth burner hood E mm 420 420 . ....

6 Cast-iron boiler for pressure firing in accordance with DIN 4702/EN 303 and valid EC directives, for low-temperature operation. Cast iron boiler MK-2 MK-2 without forced draught oil burner 320-1017 kW . Stainless steel turbulators integrated in flue-gas passes . High normative efficiency: up to 94% . Boiler elements made of durable, corrosion-resistant cast-iron . Ideally proportioned combustion chamber . Cast-iron boiler door opens left/right accross entire front, easy cleaning . Amply dimensioned thermal insulation . Powder-painted casing with supreme finish, easy to assemble ....

8 Gas-fired boiler in accordance with valid EC directives with intermitted ignition. Gas-fired boiler NG-31E NG-31E with atmospheric burner 40-110 kW . Gas-fired boiler in accordance with valid EC directives with intermittent ignition and atmospheric burner for natural gas E, natural gas LL and LPG propane/butane (category II2ELL3B/P) type (construction type) B11 or B11BS (with flue-gas monitoring as accessory) Capacity range 40-110 kW . Ultra-low-pollutant combustion without flame cooling . DVGW-Quality label . High normative efficiency: up to 95% . Pre-wired control system, plug-in system...

9 Technical Data TYPE NG-31E 70 90 110 Output 1st burner stage 1) kW 40,2 50,5 59,9 Charge 1st burner stage 1) kW 42,5 53,5 63,3 Output 1st + 2nd burner stage 1) kW 70,0 90,0 110,0 Charge 1st + 2nd burner stage1) kW 75,6 97,0 117,9 Height/height without casing A mm 970/650 970/650 970/650 Width/width without casing B mm 1025/880 1195/1050 1365/1220 Depth/depth without casing C mm 750/740 750/740 750/740 Total height with control system B mm 1120 1120 1120 Depth with draught security device E mm 1030 1030 1030 Boiler return F mm 220 220 220 Gas connection G mm 550 550 550 Boiler flow H mm...

10 . Gas-fired boiler in accordance with valid EC directives with intermittent ignition and atmospheric burner for natural gas E, natural gas LL und LPG propane/butane (category II2ELL3B/P) type (construction type) B11 or B11BS (with flue-gas monitoring as accessory) Capacity range 40-220 kW . Ultra-low-pollutant combustion without flame cooling . DVGW-Quality label . High normative efficiency: up to 95% . Pre-wired control system, plug-in system for easy installation . Nubbed cast-iron block to maximize the heat exchanger surface area . Snug-fitted thermal insulation, amply dimensioned ....

11 Technical Data TYPE NG-31ED 140 180 220 Output 1st boiler + 1st burner stage 1) kW 40,2 50,5 59,9 Charge 1st boiler + 1st burner stage 1) kW 42,5 53,5 63,3 Output 1st + 2nd boiler and 1st + 2nd burner stage 1) kW 140,0 180,0 220,0 Charge 1st +2nd boiler and 1st + 2nd burner stage 1) kW 151,2 194,0 235,8 Height/height without casing A mm 970/650 970/650 970/650 Width/width without casing B mm 1025/880 1195/1050 1365/1220 Depth/depth without casing C mm 750/740 750/740 750/740 Height with control system B mm 1120 1120 1120 Depth with draught security device E mm 1030 1030 1030 Boiler...

12 Control systems for boilers and boilers with vertical hot water storages (HWS) Control system R31-STAV Control system R32 DigiCompact Boiler temperature manually adjustable; second burner stage cut-in is load-dependent. Equipment: Operating switch, burner fault indicator, boiler thermometer, boiler temperature controller adjustable from 38-78/90°C, overheat safety cutout convertible for 120/110/100°C, 2 operating-hours counters, overheat safety cutout test button, summer/winter switch. Connection of HWS: HWS-control with hot water priority, connection for HWS-thermostat (SP1). Control...

13 Control systems for boilers and boilers with vertical hot water storages (HWS) Control System R33/4 DigiComfort Installation example: Control system R33 DigiComfort with one mixing valve circuit and return temperature boost. same as R33 DigiComfort, with additional control for 4 mixing valve circuits, wiring board (H/W/D 600/380/210 mm), with operating switch for OFF, Auto and emergency mode (instead of manual/ automatic switch), 2 control modules, connections for 5 heating circuit pumps. Installation example: Control system R33/4 DigiComfort with 3 mixing valve circuits and return...