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22 | Operation
5.1
Heating and DHW programs
5.1.1 General information
The programs for heating and domestic hot water
enable you to achieve maximum energy savings
while still enjoying optimum comfort in terms of
room temperature and availability of domestic
hot water. That is achieved, for instance, by
deactivating water heating in the periods when
nobody requires domestic hot water.
5.1.2 Weekly programs
All timer programs are set up to repeat every
week. In the program memory you can store 6
switch points for every day in each program, i.e.
a total of up to 42 switch points.
To simplify programming, you can set switch
points for groups of days as well as for individual
days.
The following groups of days are offered:
All days
•
Mon - Fri
•
Sat + Sun
•
If, for example, you change and store a switch
point for the option Mon - Fri, that change is
simultaneously applied to all days from Monday
to Friday.
5.1.3 Structure of programs
Programs for heating and domestic hot water are
always structured in the same way. Up to six
switch points (times) can be specified. A change
of operating mode is specified for each switch
point. The specified operating mode applies until
changed by the next switch point.
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Heating programs
Heating programs control heating operation.
There are three modes for heating operation:
Comfort
•
Economy
•
Frost (Frost protection)
•
For each of those operating modes, there is a
specified room temperature stored on the
FW 200 heating controls (
page 30).
There are a total of six program spaces (A to F)
available for heating programs. Each heating
program contains the switch points for one week
(weekly program). You can activate one of the
heating programs for each heating zone.
Having several stored heating
programs simplifies changing from
one heating program to another,
e.g. if your job involves periods
when you work different shifts
(night shift/day shift), or for
vacation periods.
DHW programs
DHW programs operate differently according to
the type of domestic hot water system:
With combination boilers (boilers that
•
produce domestic hot water instantaneously
on demand) the DHW program switches
between the following operating modes:
– On: if the Eco button on the boiler is not lit,
hot water is available immediately on
demand (Comfort mode).
– Off: the built-in plate heat exchanger in the
boiler is not kept constantly hot (Eco
mode); as a result energy is saved. In Eco
mode, the hot tap has to be run for a short
while before the water becomes hot.
US/CA
Section 5.4.1,
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