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FW100 Weather Compensation Controller
The FW100 is a weather compensation controller that enables the boiler to anticipate changes in heating demand in
relation to external temperatures. It comprises a programmable indoor unit to control the boiler and an external sensor
located on a north facing wall.
Features and benefi ts
•
Wall or fascia mounted
•
Installation fl exibility
•
Factory set parameters
•
Quick to install and commission
•
Economy temperature
•
House never goes cold
•
Integrated solar control using ISM1
•
Removes need for separate Worcester TDS100 controller
•
Solar optimisation
•
Maximum benefi t and effi ciency from solar installation
•
Weather compensation
•
Increased effi ciency of condensing boiler.
Room thermostat and programmer combined
The FW100 combines the functions of a room thermostat
and programmer and incorporates factory-set heat
curves for use with radiators, underfl oor heating and fan
convectors, making commissioning very straightforward.
The units also include a manual override for the user to
boost or reduce heating if and when required.
Multiple heating programmes
The FW100 offers the user three weekly heating
programmes, with six switching points per day and a weekly
hot water programme with six switching points per day.
The FW100 is compatible with the ISM1 Intelligent Solar
Module (see page 22).
When to use weather compensation controllers rather
than room thermostats
There are a number of situations where weather
compensation controllers will offer better control and
higher comfort levels compared to room thermostats. In
choosing the most appropriate solution for the end user, it
is important to understand how the system will be used and
the nature of the building.
The list below shows the key criteria that should be applied
when choosing the most appropriate controls and discussing
the options with the end user. If the answer to the majority
of the questions below is ‘yes’, a weather compensation
controller would be the most suitable option.
•
Are there many rooms in the dwelling that are used
frequently and in different ways?
•
Does the dwelling contain windows that are facing in
different directions?
•
Does the home have an open fi re, gas fi re or other heat
source that does not heat all rooms equally?
•
Does the end user want a higher degree of comfort control
in all rooms?
•
Does the customer accept the pump will run more often if
a higher degree of comfort and better energy utilisation are
to be achieved?
•
Are TRVs installed in all rooms?
•
Are there factors that prevent the heating controller being
installed in the living area?
•
Can an outdoor sensor be installed on a north facing wall?
•
Does the end user want to achieve optimum comfort with
minimum energy consumption and are they prepared to
pay a little extra for enhanced control?
EFFICIENCY
+4%
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