Product Information; Product Description; Control Types; Application Options In Different Heating Systems - Bosch WORCESTER Sense II Installation Instructions Manual

Product information

2 Product information
2.1

Product description

• The Sense II controller controls up to a maximum of 4
heating circuits. In addition 2 cylinder primary circuits, one
solar Domestic Hot Water (DHW) heating as well as one
solar circuit for central heating backup can be controlled.
• The controller has time programs:
– Heating systems: For each heating circuit, 2 time
programs with 6 switching times per day can be set
(exception: for one constant heating circuit there is
only 1 time program).
– Domestic hot water: A time program for DHW heating
and a time program for the DHW circulation pump for
each hot water circuit, each with 6 switching times per
day.
• The controller displays information about the heat source
(i.e. boiler) and heating system and is used to change the
settings.
• Installation possibilities:
– In a heat source with an EMS 2 BUS interface (Energy
Management System) or a 2-wire BUS cable.
– On a wall with BUS connection to a heat source with a
2-wire BUS interface or EMS 2.
• After operating for 1.5 hours, the controller has a power
reserve of at least 8 hours. If the power failure lasts longer
than the power reserve, the time and date will be deleted.
All other settings are saved.
• The functionality and menu structure of the controller is
determined by the type of heating system that the
controller is connected to. These instructions describe the
controller's full functionality. Your attention is drawn to the
importance of the system structure in the relevant places.
The adjustment ranges and default settings may differ from
the information in these instructions.
4

2.1.1 Control types

There are heat sources that have integrated
weather-compensated control. In such heat
sources, the integrated weather-compensated
control must be deactivated.
The following control types are available:
• Room temperature-dependent: Automated control of the
flow temperature or the heat output of the heat source
based on the room temperature. Installation of the
controller in the reference room is required.
• Weather-compensated: Automated control of the flow
temperature based on the outside temperature.
• Weather-compensated with the influence of the room
temperature: Automated control of the flow temperature
based on the outside temperature and room temperature.
Installation of the controller in the reference room is
required.
• Constant: Automated control of the flow temperature for
the heating of swimming pool or ventilation unit with
constant temperature. This control type is independent of
the room or outside temperature.
For further information on the control types ( Control types,
page 35).

2.1.2 Application options in different heating systems

In a BUS system, only one controller can carry out the
calculations for a heating circuit. Consequently, only one
Sense II programming unit may be installed in each heating
system. The controller serves as controller in:
• Systems with one heating circuit, e.g. in a detached house
• Systems with two or more heating circuits, e.g.:
– underfloor heating system on one floor, panel radiators
on the other
– Living space in combination with an area used for
commercial usage. ( Fig. 1, [1])
• Systems with several heating circuits with remote controls,
e.g.:
– House with annex with Sense II as controller and
Sense I as remote control (installation of Sense II in the
reference room of the house, Sense I in the reference
room of the annex,  Fig. 1, [2])
– House with several annexes or wings (Sense II as
controller and Sense I as remote control, installation of
Sense II in the heat source).
Sense II – 6 720 818 367 (2015/10)