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SETUP INSTRUCTIONS

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

Valve assembly is suitable for indoor use only

Valve outlet must face down and be piped to Method W, see page 31

•

NOTE! READ ALL INSTRUCTIONS PRIOR TO INSTALLATION

Содержание NUCLEUS Megatron NV-150-LF-2PS-LC

Страница 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...

Страница 2: ...ontrolled 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...

Страница 3: ...be marked 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 m...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 32: ...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 SIDE 1 KIT R NV KIT R NV3 9 THERMOCOUPLE AND FITTING 1 803200 8...

Страница 33: ...SWIVEL NUT 2 09 125 RF ITEM DESCRIPTION QTY PART 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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