HDG Compact 25, Руководство по эксплуатации

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4 Planning and installation – Connections
46
L
IGHTNING
/
SURGE PROTECTION
C
ONTROLLER HOUSING
The controller housing should, if possible, be placed near the control
elements, taking into account the ambient temperatures, and be
easy to access in a dry location.
O
UTSIDE TEMPERATURE SENSOR
The outside temperature sensor should be affixed about one third of
the way up the building (at least 2 m from the ground) on the coldest
side of the building (north or northeast). When installing the sensor,
you should take into account sources of heat which might falsify the
result of the measurement (chimneys, warm air from air shafts, direct
sunlight, etc.). The cable outlet must always point down to avoid
moisture penetration. For the electrical installation, a cable with the
designation JYSTY 2 x 2 x 0.6 mm
2
with a maximum length of 50 m
should be used.
H
EATING CIRCUIT SENSOR
The heating circuit temperature sensor serves to measure the supply
temperature for heating circuits controlled by mixers. The sensor
should be installed at a distance of approx. 30 cm after the circulation
pump on a bright metal part of the supply line.
A
CCUMULATOR SENSOR AND
HOT WATER TANK SENSOR
The temperature sensors are immersion sensors with a moulded
cable and serve to measure the temperature of the accumulator and
the hot water tank.
I
NDOOR THERMOSTAT UNIT
With the indoor thermostat unit, the preset room temperature can
be altered by 2-3 °C. A selection switch allows the operating status for
each heating circuit to be changed.
Before installing the indoor thermostat unit, a suitable location must
first be found. To ensure that only the actual room temperature is
measured, this site may not be in an area where sunlight falls, where
there's a draft, a radiator, a chimney etc. In addition, it should be at-
tached to an interior wall. The most appropriate room is the room
where the inhabitants spend the most time (e.g. living or dining
room). This room should not have any other source of heat in opera-
tion (e.g. tiled stove).
If there are thermostatic valves on the radiators, these must be set
higher than the room temperature in the control system. Otherwise,
the indoor thermostat unit will be affected. This would distort the
supply to the heating circuit and all other rooms would become too
warm. In all of the other rooms however, thermostatic radiator valves
must be fitted.
Important!
To operate the heating system safely and properly we recommend
protecting the electronic components with a lightning and surge
protection according to DIN EN 62305 or DIN VDE 0100-443. Please
contact your specialist electrical service.