Specifications

Operation and Maintenance
Once installed it is important to operate the boiler correctly to get the maximum benet from the system
and ensure trouble free operation into the future. Your system should be supplied with an operation manual
in English that comprehensively covers the operation and maintenance of your boiler. This should always be
the main reference point. The information provided in this section covers the main areas of best practice but
the operator manual should always be considered the overriding authority on the best way to operate your
boiler.
Operation
Familiarise yourself with the manual and automatic control options for the boiler. There may be a need to
override the automatic control so it is a good idea to know how to start up and shut the boiler manually
should the need arise. Set the controller and timer to reect your anticipated use of your house and set the
times for heating the hot water to meet your anticipated demands and usage patterns. It is recommend
that you review and update automatic control settings three times during the heating season, for example
October, January and March. Your needs may change and required heating times may alter during the
heating season. Set room thermostats to lowest level at which you still feel comfortable. This may require
some trial and error to get right. A one degree lower setting on the thermostat can provide signicant energy
savings. Typically, 20 – 21 degrees in the living areas and 18 degrees in sleeping areas are comfortable for the
majority of people.
Heating System Control
In order to maintain comfort conditions in a dwelling while at the same time running the heating system
eciently, then it is necessary to have automatic temperature controls in place. Thermostats are used to
control the temperature of an area or space. Usually, a dwelling is zoned according to the use of that space,
so living area would be one zone, bedrooms another, and hot water would be the third “zone”. It is possible
to create as many zones as is necessary, for example a home oce might be an extra zone. In most dwellings,
not all areas will be occupied at all times, for example a two person household, where both occupants work
during the day, therefore, temperatures can be lowered automatically at times of reduced occupancy to a
economy temperature, and then “ramped-up” for the evening when the occupancy levels rise. Thermostats
are available which have both time and temperature control and these are best suited to this type of
strategy. Some of these devices allow separate temperature and time programming for weekends, where the
occupancy patterns are dierent.
Table 2 below shows an ecient time and temperature strategy for Monday-Friday in a typical three zone
dwelling. Note that actual comfort temperatures will vary from person to person.
Living Area Zone
(Kitchen, Living, Dining, Hall, WC)
Bedroom Zone
(Master Bed, Landing, WC, Bed 1)
Hot Water Zone
(Water heating only)
11pm-7am Set back temperature to
16/17
o
C
Heat to18
o
C
On after 12am if electrical immersion
used, otherwise, comes on based on
temperature demand.
7am-8.30am Heat to 21
o
C Keep at 18
o
C
8.30am-6pm Set back to 16/17
o
C Set back to 16/17
o
C
6pm-11pm Heat to21
o
C Set back to 16/17
o
C
Table 2: Heating control strategy (Occupant household / Unoccupied Monday – Friday from 8.30 am to 6.30 pm)