Data Aire dap4 touch, Инструкция по установке, эксплуатации и обслуживанию

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83 • dap4 User Manual
e) If dehumidification is programmed for “1C in limit” or “2C in limit” the dehumidification
cooling will be inhibited by reheat if the return air temperature drops below Temperature
Setpoint - Temperature DB - 2deg F. Dehumidification will be inhibited until the return air
temperature rises above the Temperature Setpoint. Compressor short-cycle time will not
be violated.
f) If dehumidification is programmed for “1C No Limit” or “2C No Limit”, dehumidification
remains on until the humidity setpoint is reached. In this mode, dehumidification has
priority and overcooling is disregarded. The reheat sequence will remain the same.
g) There is a one (1) minute delay between stop-to-start of dehumidification cooling.
Compressor short-cycle time delay will not be violated.
h) There is a five (5) minute delay between dehumidification and humidification.
i) Relative humidity control mode is not recommended for discharge temperature control,
Dewpoint control method should be used in this case.
j) The compressor staging sequence for dehumidification cooling is as follows:
A. Relative humidity control mode:
a) Single Variable speed compressor system
Dehumidification cycles on
-- If unit is not in cooling mode, the variable speed compressor turns on when humidity
is at Humidity Setpoint (HSP) + Humidity Deadband (HDB).
Compressor will modulate its speed from 0% to 100% in 1%RH above Humidity
SeHumidity DB. For instance:
If Humidity = Humdity Se Hum Deadband, VFD will run at 0VDC
If Humidity = Humdity Se Hum De 0.1%, VFD will run at 10%
If Humidity = Humdity Se Hum De 0.2%, VFD will run at 20% Etc.
-- If cooling requires during dehumidification cycle and dehumidification mode is set
to “1C in limit” the temperature cooling control will override the dehumidification
cooling control. If dehumidification mode is set to “1C No limit”, unit will continue to
finish the dehumidification cycle then switch to temperature control cooling mode.
Dehumidification cycles off
-- Variable speed compressor C1 starts to ramp down in 0.1 % RH decrement when
Humidity drops to Humdity Se 1%. Compressor decreases 10% speed for
each 0.1%RH.
-- When Humidity equals Humdity Setpoint, compressor runs at its minimum speed
(0 VDC).
-- When Humidity is at Humidity Setpoint – 0.5 % and compressor minimum runtime
expired, compressor turns off (NO2 start signal turns off).
b) Dual DX circuit with a variable speed compressor and a fixed speed compressor