Johnson Controls LSWD Startup Manual Download

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WATER-COOLED SELF-CONTAINED UNITS

MODEL LSWU / LSWD / LSWF

WITH IPU2 CONTROL

025-105 TONS

INDOOR PACKAGED EQUIPMENT

START-UP GUIDE

Supersedes 145.05-SU7 (412)

Form 145.05-SU7 (1019)

035-22911-000

Issue Date:

October 31, 2019

Summary of Contents for LSWD

Page 1: ...COOLED SELF CONTAINED UNITS MODEL LSWU LSWD LSWF WITH IPU2 CONTROL 025 105 TONS INDOOR PACKAGED EQUIPMENT START UP GUIDE Supersedes 145 05 SU7 412 Form 145 05 SU7 1019 035 22911 000 Issue Date October 31 2019 ...

Page 2: ...d materials This individual shall also be familiar with and comply with all applicable governmental standards and regula tions pertaining to the task in question SAFETY SYMBOLS The following symbols are used in this document to alert the reader to specific situations Indicates a possible hazardous situation which result in death or serious injury if proper care is not taken Indicates a potentially...

Page 3: ... KW 105 105 KW DESIGN SEQUENCE A Initial Design UNIT TYPE EVAPORATOR COIL SE Standard Efficiency HE High Efficiency ENTERING WATER TEMPERATURE S Standard Temperature H High Temperature L L Series S Self Contained W Water Cooled U D F Upflow Downflow Frontflow 2R CL2 Plenum w Piezo Ring CHANGEABILITY OF THIS DOCUMENT In complying with Johnson Controls policy for con tinuous product improvement the ...

Page 4: ...JOHNSON CONTROLS 4 FORM 145 05 SU7 ISSUE DATE 10 31 2019 THIS PAGE INTENTIONALLY BLANK ...

Page 5: ...tion 23 Factory Run Test Feature 24 Supply Fan Test for Constant Volume or VAV Flexsys Units 24 Water Flow Switch Test 25 Compressor Run Test 25 Damper Test if available 26 Manually Forcing Digital and Analog Outputs 27 To Verify Electric Heat Operates Correctly 27 To Verify Heating Valve Steam or Hot Water Operation 27 To Verify Condenser Actuator Valve Operation 28 To Verify Economizer Actuator ...

Page 6: ...ration Parameters for L Series WCSC 21 TABLE 2 Analog Input Values 22 TABLE 3 WCSC LED Status Indicators 23 TABLE 4 Digital Input Verification chart 23 TABLE 5 Factory Run Tests 24 TABLE 6 Digital Outputs 27 TABLE 7 Analog Outputs 27 FIGURE 1 User Interface Control Panel 7 FIGURE 2 Field Control Wiring Inputs 29 ...

Page 7: ...ssword field is blank If you need to change Level 1 or Level 2 parameters you must know the appropriate password At that point only the parameters changeable under the specific password level is displayed For example if the user presses the OPTIONS menu key and then enters a Level 1 password the user is presented with a list of option parameters that are tagged as Level 1 Press the correct sequenc...

Page 8: ...resent choice The key or the key allow the different choices to be viewed and pressing either one activates the edit mode and a request for the proper password made See Password section of this manual for the proper pro cedure for entering the password When the desired choice is displayed press the key to save the new value and exit the edit mode Pressing the key while in the edit mode cancels the...

Page 9: ...Heating operations are controlled by a hardwired or communicated zone sensor Once operat ing supply air temperature is controlled to a supply air temperature setpoint SECTION 2 INTRODUCTION Variable Air Volume uses a Variable Frequency Driven supply air fan motor that controls the main supply duct to a predetermined duct static setpoint Cooling Heat ing operations are determined by return air temp...

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Page 11: ...JOHNSON CONTROLS 11 FORM 145 05 SU7 ISSUE DATE 10 31 2019 SECTION 3 PRE START UP CHECKLIST ...

Page 12: ...JOHNSON CONTROLS 12 FORM 145 05 SU7 ISSUE DATE 10 31 2019 SECTION 3 pre Start Up Checklist ...

Page 13: ...JOHNSON CONTROLS 13 SECTION 3 pre Start Up Checklist FORM 145 05 SU7 ISSUE DATE 10 31 2019 ...

Page 14: ...JOHNSON CONTROLS 14 FORM 145 05 SU7 ISSUE DATE 10 31 2019 SECTION 3 pre Start Up Checklist ...

Page 15: ...JOHNSON CONTROLS 15 SECTION 3 pre Start Up Checklist FORM 145 05 SU7 ISSUE DATE 10 31 2019 ...

Page 16: ...JOHNSON CONTROLS 16 FORM 145 05 SU7 ISSUE DATE 10 31 2019 SECTION 3 pre Start Up Checklist ...

Page 17: ...JOHNSON CONTROLS 17 SECTION 3 pre Start Up Checklist FORM 145 05 SU7 ISSUE DATE 10 31 2019 ...

Page 18: ...JOHNSON CONTROLS 18 FORM 145 05 SU7 ISSUE DATE 10 31 2019 SECTION 3 pre Start Up Checklist ...

Page 19: ...JOHNSON CONTROLS 19 SECTION 3 pre Start Up Checklist FORM 145 05 SU7 ISSUE DATE 10 31 2019 ...

Page 20: ...JOHNSON CONTROLS 20 FORM 145 05 SU7 ISSUE DATE 10 31 2019 SECTION 3 pre Start Up Checklist ...

Page 21: ...t Starts VFD 1003 Direction Forward 1101 Keypad Ref Sel Ref1 Hz rpm Sets keypad as speed reference when VFD is in HAND mode 1103 Ref1 Select AI1 Sets which Analog Input is used for speed reference when VFD is in AUTO mode 1104 Ref1 Min 20 Hz VFD speed when AI1 is at minimum 0 VDC 1105 Ref1 Max 60 Hz VFD speed when AI1 is at maximum 10 VDC 1301 Minimum AI1 0 Sets min input voltage for AI1 2 VDC 130...

Page 22: ...options 4 Record the current value 5 Temperature sensors that are not available or con nected correctly read 20 degrees 6 Transducers that are not connected correctly read 0psig 7 Humidity sensors that are not available or con nected correctly read 0 Table 2 ANALOG INPUT VALUES ANALOG INPUT VALUES Supply Air Temp Current MX Supply Air Temp Current Evap Press Temp Current Flex Evap Temp Current Wat...

Page 23: ...he compressor starts This is a normal condition On units larger than 60 tons the Compressor A Safety Chain status should always show OKAY unless FAULTED Table 3 WCSC LED STATUS INDICATORS LED INPUT DESCRIPTION BI13 Compressor F Safety Chain Status BI14 Not Used BI15 Not Used B16 Not Used BI9 Compressor B Safety Chain Status BI10 Compressor C Safety Chain Status BI11 Compressor D Safety Chain Statu...

Page 24: ...der indicated in the table below The control ler prompts you with a question Initiate Test Press the accept key check key to confirm or move to a different test on the list by pressing the up or down ar row keys Press the cancel key to leave the RUN TEST mode For each test the controller indicates the test name and the state of the test For the state of the test the follow ing information is displ...

Page 25: ... Water Flow If the signal does not return in 90 Seconds FAIL the test If signal does return in 90 Seconds PASS the test Push the check key to verify the test is complete Push the down arrow to move to the next test COMPRESSOR RUN TEST CompressorAon units 60 tons and less is a modulating scroll compressor On units above 60 tons compres sor A is a standard fixed speed compressor The test automatical...

Page 26: ...play the message IS COMP A AT LOAD PTl 4 The compressor pumps for 5 seconds and does not pump for 10 seconds 5 Press the check key if correct 6 Set the COMPRESSOR A LOAD output to 67 7 The compressor pumps for 10 seconds and does not pump for 5 seconds 8 Display the message IS COMP A AT LOAD PT2 9 Press the check key if correct 10 Set the COMPRESSORALOAD output to 100 11 The compressor pumps conti...

Page 27: ...O section and down to find Supply Fan VFD Speed Not needed for Constant Volume 4 Change Supply Fan VFD Speed to 80 Not needed for Constant Volume This turns on the Supply Fan to 80 speed 5 Under the DO section find Electric Heat Stage 1 and turn ON This turns the electric heater on for testing purposes 6 Record amperage of the Stage 1 electric heater 7 To energize additional heaters Stage 1 must s...

Page 28: ...e unit shutdowns and does not operate until 24vac is reapplied to the SD termi nal Removing the wire from the SD terminal allows any external normally closed switch safety devices to be installed in series and return power back to the SD terminal When 24vac is missing from the SD termi nal the UNIT OVERALL STATUS displays LOCAL STOP OCCUPIED COMMAND When the rocker switch is in the ON position 24v...

Page 29: ...shown indicates typical wiring Refer to the IOM for more detailed wiring methods and options 2 All wiring is Class 2 low voltage 3 Maximum power available from the 24VAC terminal is 40 VA 4 Use shielded wire where shown 5 Relay contacts suitable for pilot duty to 1A from 24 VAC to 120VAC 6 Wire 261 must be removed from the SD terminal and connected to one side of a field installed normally closed ...

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Page 31: ... OCCUPIED COOLING ZONE SETPOINT the unit switches to OCCUPIED COOLING HIGH mode SECTION 4 POST START UP DATA 12 The unit looks at current Supply Air Temperature and compares that temperature to the 1st and 2nd STAGE COOLING SETPOINTS 13 If the unit is in OCCUPIED COOLING LOW mode it references the 1st STAGE COOLING SETPOINT for supply air temperature control 14 If the unit is in OCCUPIED COOLING H...

Page 32: ...ume 1 The unit must have 24vac to the SD terminal Turning the OFF AUTO ON rocker switch to ON provides this signal 2 The unit must have 24vac to OCC terminal the Occupied Command is being communicated or the internal timeclock enabled and set to go oc cupied at a specific time 3 The supply fan should start after the unit goes Oc cupied after a slight delay 4 The supply fan starts and runs without ...

Page 33: ...int under the SUPPLY FAN key 5 The unit mode under the STATUS key OCCU PIED STANDBY 6 The temperature of the return air compared to the RETURN AIR HEATING SETPOINT under the SETPOINTS key subsection HEATING 7 If the return air temperature is less than the RE TURN AIR HEATING SETPOINT by 5 degrees the unit mode switch to OCCUPIED HEATING 8 The supply air temperature compared to the HEATING SAT in t...

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Page 38: ... 2019 Johnson Controls 100 JCI Way York Pennsylvania USA 17406 8469 www johnsoncontrols com Subject to change without notice Form 145 05 SU7 1019 Supersedes 145 05 SU7 412 All rights reserved ...

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