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PG2021 Global HAHU-VP-ECM-005
If 28ºC (300017 setting)<Ti1<28
(
3000017 setting
)
+4ºC, fan and DA2 are kept original state;
If Ti1 ≥ 28
(
3000017 setting
)
+4ºC, fan runs at set speed. DA2 output is from minimum setting(300016setting) - 10Vdc based
on Delta Ti and setting; if Ti sensor is damaged, Fan runs at set speed.
MS300080=1,
DA2 output is based on heating water flow reading and setting PID calculation. The output is minimum output
(Modbus300015 setting)-10VDc;
MS300080=2,
DA2 output is based on heating pressure difference setting (MS300085) and 4-20mA input2 reading (MS400007) PID
calculation. The output is minimum output (Modbus300015 setting)-10VDc;
b) If Tr > Ts+1 ºC, then heat operation is terminated and MTV1 is turned off. DA2 is 0VDC. Indoor fan is turned OFF.
c) The range of Ts is 16 - 30ºCor fixed according to Parameter 4 setting.
d) Indoor fan speed can be adjusted to low, medium, high and auto.
Heat mode with electrical heater as booster(300047=1)
a)
If Tr ≤ Ts - 1ºC, then heat operation is activated and MTV1 and MTV2 are turned on. Indoor fan runs at the set speed.
DA3 output is from minimum setting(300016setting) - 10Vdc based on Delta T3/T4 and setting; DA2 is open at 10VDC for 2
min. Then check Ti1;
MS300080=0,
If Ti1<=28ºC (300017 setting), EH is closed; DA2 output is 10Vdc; DA3 output is from 0 - 10Vdc based on Delta Ti3/Ti4 and
setting;
If 28ºC (300017 setting)< Ti1<=28ºC (300017 s4ºC, EH and DA2 output are kept original state;
If Ti1>28ºC (300017 s4ºC, EH is opened; DA3 is 0Vdc; DA2 output is from minimum setting(300016setting) - 10Vdc
based on Delta Ti1/Ti2 and setting;
MS300080=1
DA2 output is based on heating water flow reading and setting PID calculation. The output is minimum output
(Modbus300015 setting)-10VDc;
If Ti1<=28ºC (300017 setting), EH is closed;
If 28ºC (300017 setting)< Ti1<=28ºC (300017 s4ºC, EH is kept original state;
If Ti1>28ºC (300017 s4ºC, EH is opened;
MS300080=2
DA2 output is based on heating pressure difference setting (MS300085) and 4-20mA input2 reading (MS400007) PID
calculation. The output is minimum output (Modbus300015 setting)-10VDc;
If Ti1<=28ºC (300017 setting), EH is closed;
If 28ºC (300017 setting)< Ti1<=28ºC (300017 s4ºC, EH is kept original state;
If Ti1>28ºC (300017 s4ºC, EH is opened;
b)
If Tr > Ts+1 ºC, then heat operation is terminated and MTV1 and MTV2 are turned off. DA2 is 0VDC. Indoor fan runs at auto
speed;
c)
The range of Ts is 16 - 30ºCor fixed according to Parameter 4 setting;
d) Indoor fan speed can be adjusted for low, medium, high and auto.
Heat mode with electrical heater as primary heat source (300047=2)
a)
If Ti2 ≤ 35ºC (or Ti2 is damaged or disconnected), and if Tr ≤ Ts-1ºC(or -4 ºC if economy contact is closed), heat operation is
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