Daikin EWAP110MBYNN Operation Manual

Contents

EWAP110~340MBYNNPackaged air-cooled water chillers4PW22677-1Operation manual18ANNEX IThermostat parametersInlet water temperature control/Outlet water temperaturecontrolThe figure below shows the thermostat diagram.The default value and the upper and lower limits of the thermostatparameters are listed in the table below.■ If the temperature is below the setpoint, the thermostat controlwill check every LOADDOWN TIMER.According to the deviation to the setpoint, no action, slow loaddown (=–3%) or fast load down (=–7%) is required.■ If the temperature is above the setpoint, the thermostat controlwill check every LOADUP TIMER.According to the deviation to the setpoint, no action, slow loadup (=+3%) or fast load up (=+7%) is required.ANNEX IISchedule timer exampleTo come to the schedule above following settings have to be made:All days assigned to the same group will work according to thesettings of this group.In this example setting:■ all Mondays, Tuesdays, Thursdays and Fridays will workaccording to the settings in group 1 (G1),■ all Wednesdays will work according to the settings in group 2(G2),■ all Saturdays and Sundays will work according to the settings ingroup 3 (G3),■ all holiday days will work according to the settings in the holidaygroup (H).All group settings of groups G1, G2, G3, G4 and H work similar asfollowing example (settings for group 1):INLET CONTROL Default value Lower limit Upper limitStep difference - a (K) 0.8(a)(a) can only be modified in the service menu– –Step difference - b (K) 0.5(a) – –Steplength - c (K) 0.2(a) – –Loadup timer (sec) 48 12 300Loaddown timer (sec) 24 12 300Setpoint (°C) 12.0 7.0 23.0OUTLET CONTROL Default value Lower limit Upper limitStep difference - a (K) 0.8(a)(a) can only be modified in the service menu– –Step difference - b (K) 0.5(a) – –Steplength - c (K) 0.2(a) – –Loadup timer (sec) 12 12 300Loaddown timer (sec) 12 12 300Setpoint (°C) 7.0 4.0 16.0c b c c b ca/2 a/2SetpointFast load upSlow load upNo actionSlow load downFast load downMARCHMON TUE WED THU FRI SAT SUN1 G1 2 G1 3 G2 4 G1 5 G1 6 G3 7 G38 G1 9 G1 10 G2 11 G1 12 G1 13 G3 14 G315 G1 16 G1 17 G2 18 G1 19 G1 20 G3 21 G322 G1 23 H 24 H 25 H 26 H 27 H 28 H29 H 30 G1 31 G2Screen 1Screen 2_÷ SCHEDULE TIMERMON:G1 THU:G1 SAT:G3TUE:G1 FRI:G1 SUN:G3WED:G2_÷HD PERIOD:01 TO 0301:23/03 TO 29/0302:00/00 TO 00/0003:00/00 TO 00/0014.0°C6 8 12 13 15 18 2012.0°CCooling inlet setpoint 1OnOfftime (h)_÷ GROUP1:01 TO 031:06h00 ISP1 E: 12.02:06h00 ON 00.03:08h00 ISP1 E: 14.0_÷ GROUP1:04 TO 064:12h00 OFF 00.05:13h00 ON 00.06:20h00 OFF 00.0

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