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Applications Manual Bosch Greenstar | 13
Bosch Thermotechnology Corp.
Data subject to change
2.1 System 1: Greenstar Heating Boiler in a
single zone system
Summary:
Single boiler supplying one baseboard heating zone
equipped with FW200 outdoor reset controller with built-in
room sensor in the living space. This system is using the
boiler pump for zone water circulation.
This design can only be used with a single loop baseboard
system that has a low pressure drop. Radiant fl oors, panel
radiator, or multi zone systems require primary-secondary
piping. Do not install zone valves with this system.
The pump will run in constant circulation except when in
warm weather shutdown.
Max. 70' (21 m) of 3/4" baseboard at a 20°F delta T and a
fl ow rate of 4.0 gpm plus the necessary supply and return
piping.
In detail:
The FW200 is an outdoor temperature based controller
with room temperature infl uence. The controller adjusts
the heating curve (boiler supply temperature) according to
outdoor temperature. When the FW200 is wall mounted,
it also uses room temperature to adjust the heating curve
and modify boiler supply temperature.
FW200 provides warm weather shutdown.
Required components:
Greenstar heating boiler.
FW200 controller in the room.
Additional instructions:
See manufacturer’s installation and operating instructions.