16 Chapter 1 Overview
ECM3 Series Outdoor Power System User Manual
default), and stops at the preset temperature point (10°C by default). The system provides two thermal control units
for user to select, see Table 1-18 for specific parameters.
Table 1-18 Heating performance of heat exchanger
Type
Heating performance
Heat dissipation
Heating
80W/K heat exchanger
Meet 800W load, 10°C temperature difference
between inside and outside cabinet
When selecting one group of heaters, the
inside temperature of the 80W/K heat
exchanger type cabinet can be heated from
-40°C to 0°C within three hours;
When selecting two group of heaters, the inside
temperature of the 190W/K heat exchanger
type cabinet can be heated from -40°C to 0°C
within three hours
190W/K heat exchanger
Meet 1200W load, 10°C temperature difference
between inside and outside cabinet
1.4.2 Air Conditioner
The power system with an air conditioner refrigerates through a door-mounted air conditioner. The air conditioner
internal circulation is as follows: Hot air is inhaled from the top, and cold air is expelled out from the bottom. The
external circulation is as follows: External cold air is inhaled from the bottom, after heat exchanging, hot air is
eliminated out from the top. The wind direction is shown in Figure 1-23.
External circulation
Internal circulation
Emergent ventialation
Figure 1-23 Heat dissipation theory of ECM3-E14A-4/1
Refrigeration and heating functions
The air conditioner starts refrigeration when inside cabinet temperature exceeds the refrigeration startup temperature
point (35°C by default). The air conditioner stops refrigeration when the inside cabinet temperature is lower than the
refrigeration stop temperature point (25°C by default). If the selected air conditioner with heating function, then the air
conditioner starts heating when the inside cabinet temperature is lower than the heating startup temperature point
(0°C by default), and stops heating when the inside cabinet temperature is higher than the heating stop temperature
point (10°C by default).
Emergent ventilation function
Upon air conditioner failure or the inside temperature exceed the start temperature point of the emergent fan (45°C by
default) and the outside temperature is lower than the inside temperature (3°C by default), the power system can
automatically start the emergent fan for heat dissipation. The cold air is inhaled in at the bottom of cabinet door, after
filtering by the filter; the cold air goes to user equipment, and the generated hot air is drawn out by the fan, so as to
cool the user equipment under emergent circumstance.