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Leonard NUCLEUS VALVE NV-150-LF, Installation Adjustment Service

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Leonard NUCLEUS VALVE NV-150-LF Installation Adjustment Service Download Page 2

SETUP

 

INSTRUCTIONS

•NOTE!

 

FOR

 

RECIRCULATION

 

PIPING

 

ARRANGEMENT,

 

SEE

 

PAGE

 

30

110V POWER

SUPPLY
GREEN WIRE

EARTH GROUND

CONNECTOR

MIXED OUTLET

ISOLATION VALVE

ETHERNET

CONNECTION

MIXED OUTLET

TEMPERATURE

PROBE

NUCLEUS VALVE

CONTROL PANEL

COLD INLET
CHECK VALVE

MOTOR WIRING

CONNECTOR

NUCLEUS VALVE
MOTOR & BODY

HOT INLET

CHECK VALVE

WARNING

The Leonard Nucleus Digital Mixing Valve is an electronically controlled device utilizing DC
circuitry. The Green Wire Earth Ground Connector

MUST

be properly grounded to a nearby

suitable earth ground prior to connecting the Outlet RTD Probe, Motor Wiring Harness and
the Main Unit Power Supply. Installer must follow detailed instructions below to ensure
proper operation of valve.

RELAY RATING: 30 V DC, SELV, LPS, or Class 2, 2 Amp MAX, 60W, NO Only

•

NOTE!

 

READ

 

ALL

 

INSTRUCTIONS

 

PRIOR

 

TO

 

INSTALLATION

2

Summary of Contents for NUCLEUS VALVE NV-150-LF

Page 1: ...ft Cold right Exercise caution when soldering 4 Flush pipes thoroughly after system has been connected 5 This assembly MUST be piped according to LEONARD S REQUIRED PIPING METHOD W 6 Refer to pages 2...

Page 2: ...CHECK VALVE WARNING The Leonard Nucleus Digital Mixing Valve is an electronically controlled device utilizing DC circuitry The Green Wire Earth Ground Connector MUST be properly grounded to a nearby s...

Page 3: ...RETURN to be installed on the tempered return line 1 2 NPT Connection Tighten compression fittings by hand and then tighten just 1 8 to 1 4 turn DO NOT overtighten fittings See page 30 for more detai...

Page 4: ...ater Pressure P1 Inlet Hot Water Temperature T1 Inlet Cold Water Pressure P2 Inlet Cold Water temperature T2 Mixed Water Temperature Sensor T3 and Return Water Temperature Sensor T4 Above the Overlay...

Page 5: ...ately 10 seconds and the set point will remain unchanged Symbols and indicate whether the outlet temperature is being adjusted higher or lower by the controller Standard Menu Options on Board Equipped...

Page 6: ...the main control board the wiring to the main board is improper or the sensor is damaged Menu Screen 3 Return Water Temperature Pressing 3 times displays Rtrn temp XXX F or C This screen displays actu...

Page 7: ...ressure Sensor P2 Note A large negative value displayed at the Cold psi line is an indication that there is no sensor installed to the main control board the wiring to the main board is improper or th...

Page 8: ...Meters F1 F2 and or 1 additional pressure sensor P3 which are standard 4 20mA inputs See Page 28 for details regarding Daughter Board Menu Screen 7 Optional Temperature Probe 5 T5 Pressing 7 times di...

Page 9: ...displays actual temperature as measured on RTD T8 if the Nucleus is so equipped with the optional temperature sensors Note A large negative value displayed at the Temp 8 line is an indication that the...

Page 10: ...n of the actual measured value of pressure PSI on pressure sensor 3 P3 if the Nucleus is so equipped with the optional Pressure Sensor P3 Note A large negative value displayed at the Flow 2 or Psi 3 l...

Page 11: ...ule 11 Pressing 15X displays BMS Connected N or Y In order for this to be Y or YES the control box needs the following conditions The Leonard supplied ProtoCessor needs to be installed on the main Pri...

Page 12: ...gative value displayed at the Cur temp line indicates the sensor is damaged or not properly wired to the main control board Note Pressing the key will reverse the order previously shown and allow the...

Page 13: ...users downstream of the device if proper safety precautions are not adhered to Commissioning the Digital Mixing Valve Overview 1 To enter the commission menu via panel push the keys in the following s...

Page 14: ...F Commissioning Menu Screen 4 Maximum Outlet Temperature Pressing 3 times displays Max temp This is maximum temperature as measured on the primary outlet temperature sensor of the Nucleus Mixing Valve...

Page 15: ...Err TTML has elapsed An error that exists past both TTML and TTL will require user recognition to clear error from screen by pressing ENTER If the problem corrects itself during the elapsing TTL time...

Page 16: ...value to Y yes and press ENTER to confirm Commissioning Menu Screen 9 Minimum Alarm Temperature for Temperature Sensor 5 Note There are four 4 additional RTD temperature probe provisions T5 T6 T7 T8 i...

Page 17: ...emp 6 min 32F This is the minimum temperature for RTD probe T6 Any temperature below this setting at T6 will trigger an error message Default setting is 32 F Commissioning Menu Screen 12 Maximum Alarm...

Page 18: ...Temperature for Temperature Sensor 7 Pressing 13 times displays Commissioning Temp 7 max 185F This is the maximum temperature for RTD probe T7 Any temperature above this setting at T7 will trigger an...

Page 19: ...ter the device and subsequently deliver that high temperature water downstream of the device There is inherent risk in this procedure and it is a feature which allows the user to Disinfect the plumbin...

Page 20: ...let temperature is below the MIN or above the MAX settings which will automatically end the cycle SEVERE BURNS SEVERE INJURY AND OR EVEN DEATH MAY OCCUR IF SUCH PROVISIONS ARE NOT IN PLACE WHEN SELECT...

Page 21: ...me to cool via radiation Provisions should be made to manually dump water from the loop if a faster cool down time is desired SEVERE BURNS SEVERE INJURY AND OR EVEN DEATH MAY OCCUR IF SAFETY PROVISION...

Page 22: ...ng will move the shuttle to allow more cold water into the valve To exit this mode press the ENTER key Once this mode has been exited the valve will revert back to its standard operation Commissioning...

Page 23: ...not been commissioned Selecting N will also exit commissioning mode and the home screen will then be displayed Commissioning Menu Screen 21 Exit Commissioning Mode Pressing 20 times displays Commissi...

Page 24: ...set point and is too cold Investigate cause of hot water temperature being too low Check hot water source ERT3 Outlet temperature greater than 5 F below set point Investigate cause ERT4OS Return water...

Page 25: ...ss than 40 PSI Investigate cause ERT5OS Optional temperature probe 5 disconnected from controller not properly installed to controller or broken Ignore error if no probe is present Check wired connect...

Page 26: ...ing diagram Replace probe if broken ERF2OS Optional flow sensor 2 disconnected from controller not properly installed to controller or broken Ignore error if no sensor is present Check wired connectio...

Page 27: ...y cleared from the LCD screen by pressing ENTER If alarm condition is still present the TTML page 15 begins and alarm is re triggered after TTML has elapsed This process can continue until outlet temp...

Page 28: ...RETURN OUTLET 5V Sig Gnd Pos Sig Neg Pos Sig Neg Pos Sig Neg Pos Sig Neg 5V Sig Gnd DAUGHTER BOARD BOARD WIRING DIAGRAMS MASTER PRINTED CIRCUIT BOARD WIRING DIAGRAM DAUGHTER PRINTED CIRCUIT BOARD WIRI...

Page 29: ...8 Using an flathead screwdriver loosen the connections between the board and wires Remove the wires from the connectors 3 Remove the disconnected wires from the control box Begin by loosening the cabl...

Page 30: ...enough to hold the ferrule in place The RTD temperature probe is then inserted through the entire fitting until the end of the probe reaches approximately the center of the desired measured water stre...

Page 31: ...rovide best performance Frequency of cleaning depends on quality of local water conditions and usage See Maintenance Guide and Record MGR 1000 TROUBLESHOOTING 1 Leaks at stem 2 Leak between valve cove...

Page 32: ...NV3 4 O RING SHUTTLE 1 KIT 1 NV KIT R NV KIT 1 NV3 KIT R NV3 5 O RING SLEEVE 1 KIT 1 NV KIT R NV KIT 1 NV3 KIT R NV3 6 SEAT HOT SIDE 1 KIT R NV KIT R NV3 7 SHUTTLE 1 KIT R NV KIT R NV3 8 SEAT COLD SID...

Page 33: ...T KIT 20 LOWER STEM PACKING 2 KIT 2 200 C 21 SCREEN 2 KIT 2 200 C 22 SPRING CHECK 2 KIT 2 200 C 23 O RING COVER 2 KIT 2 200 C 24 O RING UPPER STEM 2 KIT 2 200 C 25 STEM UPPER CHECK 2 4727 26 CHECK BON...

Page 34: ...clean any sediment or debris that has built up Replace O ring if necessary 7 Inspect and clean all surfaces of the cover Replace cover O rings if necessary 7A If a new Teflon gasket is required remov...

Page 35: ...oosen the locking nut and then remove the sleeve assembly by unthreading it from the base special tool required Remove Sleeve Assembly from Body Disassemble Sleeve 9B Model NV 300 LF Using 5 32 Allen...

Page 36: ...LF 2PS MINIMUM PRESSURE DROP FLOW 5 10 15 20 25 30 35 40 45 50 PSI GPM l min 0 3 0 7 0 97 1 4 1 7 2 1 2 4 2 8 3 1 3 4 BAR 0 25 100 144 177 200 222 244 262 280 305 330 GPM 0 95 378 544 669 756 839 922...

Page 37: ...r from the date of shipment During this period Leonard will at its option repair or replace any product or part thereof which shall be returned freight prepaid to the Leonard factory and determined by...

Page 38: ...2 Flow Temp 5 min Temp 5 max Temp 6 min Temp 6 max Temp 7 min Temp 7 max Temp 8 min Temp 8 max COMMISSIONED PARAMETERS RECORD KEEPER Use the table below to record all of the commissioned parameters fr...

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