Technical data

14
The FR110 is an intelligent programmable room
thermostat that enables load compensation for heating
and time control of hot water systems. It works in much
the same way as the FR10 but with the added benefit
of built-in programming so there is no need for a
separate programmer.
The controller provides the choice of six weekly heating
programmes, with six switching points per day. When
used with system boilers it also offers a weekly hot water
programme with six switching points per day. On combi
boilers the six switching points can be used to switch
preheat on where the hot water will be delivered to the
tap quickly, and energy saving economy mode where the
preheat function is turned off.
As well as providing the user with the ability to programme
the system themselves, the FR110 offers 3 pre-set
temperature profiles for added convenience.
•
Comfort setting (21ºC), typically for use in the
morning and evening
•
Economy setting (15ºC), typically used to keep the
building warm through the day
•
Frost protection (5ºC), for when the property is
unoccupied for long periods or the heating is off
in cold weather.
As with the FR10, the FR110 should be fitted in the same
place as a traditional thermostat, typically a hallway.
It can also be retrofitted to replace an existing thermostat,
in most cases using the same cabling. Mounting in a new
location is also very straightforward.
Use of a low voltage supply from the mains, rather than
relying on battery power, provides a clearer display for
the user and ensures they don’t have to worry about
replacing batteries.
For extra peace of mind, the controller is supplied with
a battery that will provide up to six hours back-up of the
current time and date in the event of a power failure.
Programmes and other settings are stored permanently.
Once installed the FR110’s integral low voltage EMS Bus
device communicates with the boiler’s built-in Heatronic
3 controls to provide load-compensated control that finely
tunes flow water temperatures to heating demand.
The resultant reduced boiler cycling and the fact that the
boiler remains warm rather than frequently cooling down
and heating up again provides energy savings compared to
older style controllers.
Reflecting Worcester’s commitment to making life easier
for its customers, the FR110 features a clear display with
a simple interface for programming. Experience has shown
that end users very quickly grasp the functioning of the
controller and its programming.
Integrated solar heating control
The FR110 can also be used in conjunction with Worcester’s
ISM1 Intelligent Solar Module (see page 19) to integrate
Worcester’s Greenskies solar water heating system with a
Greenstar system boiler and optimise use of renewable solar
energy for water heating. The combination of FR110 and ISM1
allows the system to anticipate the heat available from the
solar panels at any time and control the boiler accordingly.
The FR110 is suitable for use with Greenstar CDi combi
and system boilers.
FR110 Programmable Room Thermostat