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Manual de Instalación,

Operación y Mantenimiento

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Содержание SW Series

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Страница 3: ...Model identification 5 Dimensions 7 Mounting 8 Connecting diagram 9 Wiring Diagram for Single phase units 10 Wiring Diagram for Three phase units 11 Operation Modes 12 General characteristics 12 15 Terminal Block Description 16 Displaying and adjusting parameters flowchart 17 Operation Examples 18 20 ...

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Страница 5: ...able control of air conditioning units is required Westric Sequencers are available in different versions or models Model Identification S W 3 X X X X X X X Special Features S Standard N Economizer Emergency Ventilation Alarm reset M Manual A Automatic Power supply A 220V 50Hz 1ph P 110V 60Hz 1ph S Permanent Ventilation Operation Mode D Third unit Reinforces U Third unit Backup NUMBER OF UNITS TO ...

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Страница 7: ...76 5023 05 Page 7 of 20 SW 302 Dimensions ...

Страница 8: ...rong temperature readings Suggested locations vary according to the position of the conditioning unit a Both units on the same side b One unit each side Mounting The sequencer assembly on the wall of the room must be made through the two holes located on the outside of the top and the two located on the bottom without disassembling the cover to prevent dust from entering the controller SW 302 Sequ...

Страница 9: ...ical panel from which the sequencer will be supplied with 220VAC All wiring connected to the sequencer must have a minimum gauge of 1 5 mm2 AWG 15 1 Terminal block for connecting to fire alarm control and or phase monitoring relay 2 Terminal block for mechanical thermostat connection 3 Dry contact terminal block for failure output Main Panel Unit 1 SW 303 Power supply 220V 2 x 1 5 mm2 Earth Power ...

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Страница 12: ...put E1 or E2 unit failure 1 or 2 opens the sequencer cycles turning on the unit that was in backup in this case the alarm for high temperature F that makes cycle or turn on the backup unit is without effect The E1 E2 unit digital input failure must be reset manually Resetting Alarms M Model Alarms are still on and must be reset manually even if the cause that originated them has been normalized A ...

Страница 13: ...ered with a bridge in this terminal block which must be removed if you choose to connect it to any of the devices mentioned above Manual Thermostat Terminal Block Not included in the sequencer and not required Westric SW 302 sequencers have a terminal block to which a mechanical room thermostat can be connected In the event of a possible microprocessor failure this thermostat can be used to force ...

Страница 14: ...e Memory The SW 302 sequencer has a non volatile memory in which the following information is stored in the event of an indefinite power failure All system parameters and set points What unit whas working as head at the time of the power outage Number of operating hours of head units up to the time of power failure This ensures uniform wear of the machines even in areas with frequent power outages...

Страница 15: ...g FF The sequencer beeps NORMAL LED goes out All unit control outputs opens The failure dry contact closes Power supply failure alarm The display flashes showing BTE The sequencer beeps NORMAL LED goes out All unit control outputs opens The failure dry contact closes Digital input alarm The display flashes showing FE1 or FE2 unit 1 or 2 The sequencer beeps NORMAL LED goes out All unit control outp...

Страница 16: ...cal Heater C Compressor Failures NA Remote alarm failure output NO LM Remote alarm failure Common NC Remote alarm failure output NC Ext Thermostat External thermostat Connect to a mechanical room thermostat for emergency operation Optional and not indispensable for the operation of the sequencer External thermostat Power Source T Earth N 220VAC 50Hz power supply to the sequencer L1 Keyboard Key Fu...

Страница 17: ...s 1 day t1 High temperature alarm delay 0 min 60 min 0 min F High temperature alarm set point C2 1ºC 31º 31ºC 29ºC C2 Backup unit compressor start setpoint 2nd refrigeration stage C1 1ºC 30ºC 25ºC C1 Head unit compressor start setpoint 1st refrigeration stage 21ºC 29ºC 23ºC r Heating set point 10ºC C1 1ºC 14ºC Cod Access code for parameter change 000 255 000 ...

Страница 18: ...w The access code is increased by ten by pressing D 23 5 Cod D 000 Enter access code XXX G r t1 D 000 Change parameter 0XX G t1 F D 30 Change parameter 0XX G F G Double beep confirms the recording of parameters 23 5 Indicator lights Indicator Description Color V1 On indicates start of the unit 1 evaporator fan Yellow R1 On indicates start of the unit 1 electrical heater Yellow C1 On indicates star...

Страница 19: ...D goes out The failure dry contact closes STE Temperature Sensor Failure Alarm The display flashes showing STE The sequencer beeps NORMAL LED goes out All unit control outputs opens The failure dry contact closes BTE Power Supply Failure Alarm Low voltage The display flashes showing BTE The sequencer beeps NORMAL LED goes out All unit control outputs opens The failure dry contact closes FE1 FE2 Un...

Страница 20: ...In A models the display and dry contact output are automatically reset when the causes that generated the fault disappear Manual cycle In order to facilitate maintenance work and testing of the units it is possible to manually cycle the units in the following way Press from the room temperature display D G Customer service If you have any questions regarding the installation programming or use of ...

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