1. Low temperature zone temperature settings: Press displays the
temperature of low temperature zone, press or to change the
controlling temperature. Without pressing any key when finished operating，it
will automatic save memory setting parameters after six seconds.
2.Parameter setting: Holding and after six seconds to enter Setup,
the corresponding indicator flashes, more than once every press to run the
next function indicators, then press or to change the parameters for
each function. Without pressing any key when finish operation, it will
automatic save memory setting parameters after six sec o n d s .
Co de：M801AH.15.08.18
Microcomputer Thermostat Serial
《EW-801AH 》Directions
This product is mainly used in solar water heater equipment, the use of
the temperature difference and temperature to control the output. This
product has two-ways output control, one way to control the temperature
difference between the two temperature zones, when the temperature
difference reaches the set value, automatically run the pump cycle, the
temperature of the two temperature zones to reach equilibrium, another
way to control electric heating; when solar heating fails reached (low
temperature) set temperature, the electric heating system is heated
to a set temperature automatically start and automatic temperature control
range values within a temperature difference.
1、 ：AC220V ±10％ 50HZ/60HZ
2、 ：5A/220V/AC
3、 ：≤3W
4、 ：-10℃ ～50℃ RH≤90％
5、Control of heating：2℃～99℃
6、Control of thermal start- up：3℃～50℃
7、Resolution：1℃ Accuracy：±1℃
8、nput signal：two-ways sensors，20KX1.5mX2
9、 ：76(L)×35(H)×76(D)mm
10、Hole Size：71(L)×29(H)mm
Operating voltage
Load
Power Consumption
Working environment
Overall Dimension
Output
Panel Diagram
Display the current temperature of
the low temperature zone
Running lights
1.The voltage must accord with controller's demand.
The voltage's deviation is no more than ±10%.
2.The loop of sensor is possible to keep away from the
loop of power.
3.The sequence of line's must have been connected
Properly.
When two temperature sensor detects a
temperature of two zones, the difference is greater
than the value of thetemperature difference
between the set start value, the circulation pump
relay ON, temperature difference setting range:
temperature of the pump stopped+1 ℃ ~ 50 ℃.
Temperature difference between the started
Temperature hysteresis
After reaches the set point and stop
heating, temperature down, and then
restart the difference between electric
heating, temperature hysteresis setting
range: 1 ℃ ~ 20 ℃.
High temperature zone temperature correction
Low temperature zone temperature correction
When the thermostat detects the
temperature of the high temperature
zone and the actual value error, this
feature can be amended. Correction
range: -10 ℃ ~ 10 ℃.
When the thermostat detects the
temperature of the low temperature
zone and the actual value error, this
feature can be amended. Correction
range: -10 ℃ ~ 10 ℃.
Sensor error self-test function
When the high temperature zone
sensor circuit or open circuit
will show "E H" symbol.
When the low temperature zone
sensor circuit or open circuit will
show "E L" symbol.
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Temperature difference of the pump stopped
When the temperature difference between the two
sensors is less than this value, the circulation pump
stops, Range 1 ℃ ~ started temperature difference-1 ℃ 。
Note: When difference of the pump stops setting “0”,
once the circulation pump relay ON, circulation
pump not stopped.
Technical Specifications
Demand of install
Brief on Controlling Procedure
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In the non setting state, press can see the current
temperature of the high temperature zone.
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Heating temperature difference
High temperature zone must be
higher than the setting temperature
difference. Equal or less than this
value automatically start heating
control. Heating temperature
range:0℃～20℃。
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