TECHNICAL MANUAL - BVT Partners OÜ

Indoor air temperature (˚C)18.0ADehumidifyingHeating'11 • SRK-T-10518 30Outdoor air temperature (˚C)(b)1) 2) When both the indoor and the outdoor air temperatures are in the range “A”, cooling or heating is switched depending onthe difference between the setting temperature and the indoor air temperature.3) When the operation mode has been judged following the change of setting temperature with the remote controller, the hourlyjudgment of operation mode is cancelled.(c)(d)Signals of wireless remote controller (Display)–6 –5 –4 –3 –2 –1 0 +1 +2 +3 +4 +5 +6CoolingSettingDehumidifyingtemperatureHeating(e) When the unit is operated automatically with the wired remote controller connected, the cooling operation is controlled accordingto the display temperatures while the setting temperature is compensated by +1°C during dehumidifying or by +2°C duringheating.(11) Protection control function(a) Dew prevention control [Cooling]: Prevents dewing on the indoor unit.1) Operating conditions: When the following conditions have been met for more than 30 minutes after starting operationa) Compressor’s command speed is 28 rps or higher.b) Detected value of humidity is 68% or higher.2) Contents of operationa) Air capacity controlModelItemSRK63ZK-S SRK71ZK-S SRK80ZK-SULoUpper limit of compressor’s command speed (1)Range A: As per following table, Range B: 40 rpsIndoor fan4th speedMe, Upper limit of compressor’s command speed (1) Range A: As per following table, Range B: 40 rpsHi, LoIndoor fanAdaptable to compressor’s command speed (4th to 9th speed)Note (1) Ranges A and B are as shown below.● Condition for range ARange BCompressor’s command rps is controlled according to the indoor unitheat exchanger temperature (Th2) and the indoor unit room temperatureRange A(Th1).CancelConditionCompressor’s command rps63 68 78・ Decreases the compressor’s target max speedHumidity (%)by 4 rps.Th2 ≦ Th1 ‒ 10・ If the condition is met still 20 seconds later,the speed is decreased further by 4 rps. Thisprocess is repeated further so far as thecondition is met. (Lower limit is 30 rps.)Compressor’s target max. speed or changedTh1 ‒ 10 < Th2 ≦ Th1 ‒ 6value of the same is maintained.Th2 ‒ 6 < Th1Changed compressor’s target max. speed isincreased at a rate of 1 rps/20 seconds.