11
INSTRUCTION MANUAL
AIR HEATER TYPE DXA
4.5.4 ON/OFF thermostat installation
To connect the air heater to an ON/OFF room thermostat,
do the following:
• Connect the two thermostat wires to terminal 6 and
7 (see figure 10 or the electrical wiring diagram in
§11). This is a 24 V connection for the thermostat
signal.
Figure 10 - ON/OFF thermostat connection
NOTICE
Never combine these connections with the
terminals 6 and 7 of other air heaters.
NOTICE
Always use separate relays for each air heater.
NOTICE
Do not connect an external power source to
these terminals. These terminals need a dry contact.
5 Flue systems
This air heater uses oxygen from the surrounding air for
the combustion process. CO
2
is formed and emitted as a
result. Too much CO
2
in the air may be harmful to people,
animals and crops.
DANGER!
Never allow the CO
2
concentration to rise
above the values shown in the table below!
Maximum CO
2
concentration
Poultry shed
0.3% 3,000 ppm
Greenhouse
1.0%
10,000 ppm
DANGER!
This air heater may emit carbon monoxide
(CO) when the oxygen level in the surrounding air is too
low. Carbon monoxide is extremely dangerous. Ensure
sufficient ventilation to prevent this from happening.
WARNING!
The minimal ventilation requirements for a
room in which this air heater is installed is 1000 m
3
/h for
each 100 kW of installed power.
Содержание DXA100
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