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tubra®-FSU / FSM
Flat stations
The thermally controlled tubra®-FSU / FSM flat stations for comfortable, decentralized and hygienic potable hot water heating and efficient heating distribution.
For new construction and renovation with extensive standard equipment. Versions for radiator systems, floor heating and combinations.
All versions with copper or stainless steel brazed plate heat exchanger.
- power classes from 35 kW – 50 kW
- thermal hot water control
by 3-way priority control valve - standby temperature 50 °C according to VDI 2072
- hot water comfort levels
- and much more
The flat stations are available as unmixed and mixed heating circuits with or without HT connection in various designs.
Unmixed heating circuit:
- tubra®-FSU-S (14 l/min) copper heat exchanger
- tubra®-FSU-S (14 l/min) stainless steel heat exchanger
- tubra®-FSU-M (20 l/min) copper heat exchanger
- tubra®-FSU-M (20 l/min) stainless steel heat exchanger
Mixed heating circuit
- tubra®-FSM-S (14 l/min) copper heat exchanger
- tubra®-FSM-S (14 l/min) stainless steel heat exchanger
- tubra®-FSM-M (20 l/min) copper heat exchanger
- tubra®-FSM-M (20 l/min) stainless steel heat exchanger
Mixed heating circuit with HT connection
- tubra®-FSM HT-S (14 l/min) copper heat exchanger
- tubra®-FSM HT-S (14 l/min) stainless steel heat exchanger
- tubra®-FSM HT-M (20 l/min) copper heat exchanger
- tubra®-FSM HT-M (20 l/min) stainless steel heat exchanger
Power classes
network temperature 60 °C, hot water temperature 45 °C
- FSU/M-S: 14 l/min (35 kW)
- FSU/M-M: 20 l/min (50 kW)
Dimensions
- construction depth 110 mm suitable for drywall
- SM housing narrow: 570 x 700 x 150 mm
- FM housing narrow: 570 x 700 – 900 x 110 – 160 mm
- SM housing wide: 700 x 1160 x 150 mm
- FM housing wide: 700 x 1160 – 1350 x 110 – 160 mm
Thermo Comfort System
- thermal hot water control by 3-way priority control valve
- standby temperature 50 °C according to VDI 2072
- hot water comfort level III according to VDI 6003
Delta Control System
- integrated differential pressure regulator 30 kPa
- presettable zone valve in the heating outlet
Safety Set
- strainer in the station entrance
- water hammer damper
- manual air vent in the flow
Measurement Ready
- fitting for heat meter 110 mm / 3⁄4″
- fitting for cold water meter 110 mm / 3⁄4″
Circulation Set
- connection for hot water circulation pump
- e.g. Lowara Ecocirc 15/1 with intgr. thermostat
- controllable via timer
Mixed Heating System – 10 kW
- connection of mixed heating circuit for floor heating with thermal fixed value control section
- maximum power floor circuit: Q=10 kW, dT=5 K, 1.7 m³/h
- a thermostatic head with remote sensor controls the flow rate from the mains and
keeps the flow temperature constant 20 – 50 °C - temperature switch in floor circuit flow max. 55 °C
High Temperature Radiator Option
- additional high-temperature outlet for bathroom radiators with return temperature limitation
| Typ | tubra®-FSU-S | tubra®-FSU-M | tubra®-FSM-S | tubra®-FSM-M | |
|---|---|---|---|---|---|
| Material PHE | Cu / VE | Cu / VE | Cu / VE | Cu / VE | |
| WW-flow rate 60/10-45 °C | l/min | 14 | 20 | 14 | 20 |
| WW-capacity | kW | 35 | 50 | 35 | 50 |
| Heating capacity max. (360 l/h / dT=25 K) | kW | 10 | 10 | 10 | 10 |
| Prim. flow rate (WW-max.) | l/h | 720 | 1180 | 720 | 1180 |
| kvs-value DHW | m³/h | 1,2 | 1,7 | 1,2 | 1,7 |
| max. pressure loss DHW | kPa | 37 | 44 | 37 | 44 |
| kvs-value heating | m³/h | 0,7 | 0,7 | 0,7 | 0,7 |
| Equipment variants | |||||
| Different pressure control 30 kPa | Yes | Yes | Yes | Yes | |
| Thermal DHW control | Yes | Yes | Yes | Yes | |
| DHW priority control | Yes | Yes | Yes | Yes | |
| Heating zone valve M30*1,5 | Yes | Yes | Yes | Yes | |
| EPP insulation heat exchanger | Yes | Yes | Yes | Yes | |
| Heat exchanger standby temperature | Yes | Yes | Yes | Yes | |
| Strainer fitting station inlet, position for heat meter sensor | Yes | Yes | Yes | Yes | |
| Manual air vent primary side | Yes | Yes | Yes | Yes | |
| Water hammer | Yes | Yes | Yes | Yes | |
| Adapter for heat meter | Yes | Yes | Yes | Yes | |
| Adapter for cold water | Yes | Yes | Yes | Yes | |
| Connection for circulation pump | Yes | Yes | Yes | Yes | |
| Mixed heating circuit 20 - 50 °C | - | - | Yes | Yes | |
| Temperature switch 55 °C | - | - | Yes | Yes | |
| Options | |||||
| Vlies insulation | optional | optional | optional | optional | |
| Mounting connection plate 7-fold | optional | optional | optional | optional | |
| Mounting connection plate 9-fold (incl. HT outlet) | - | - | optional | optional | |
| High temperature outlet for bath radiator | - | - | optional | optional | |
| Connection set for underflour heating distributor | - | - | optional | optional | |
| Circulation pumpe set | optional | optional | optional | optional | |
| Housing | |||||
| SM-housing narrow: 570 x 700 x 150 mm | optional | optional | - | - | |
| FM-housing narrow: 570 x 700 - 900 x 110 - 160 mm | optional | optional | - | - | |
| SM-housing wide: 700 x 1160 x 150 mm | - | - | optional | optional | |
| FM-housing wide: 700 x 1160 - 1350 x 110 - 160 mm | - | - | optional | optional |
tubra® accessory selection
The thermally controlled tubra®-FSU / FSM flat stations for
comfortable, decentralized and hygienic potable water heating and
efficient heating distribution.
Flat station with circulation
tubra®-FSU / FSM
HW volume flow 60/10 – 45 °C with 14 to 20 l/min
Flat station without circulation
tubra®-FSU / FSM
HW volume flow 60/10 – 45 °C with 14 to 20 l/min
