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6. Wiring Diagram

Minimum Manifold Pressure Set Button

DOWN Button

UP

 But

ton

: Red

BR

Y

: Black

: Gray

O

G

BL

: White

V

WIRING DIAGRAM

COLOR CODING

R

GY

BK

: Brown

W

: Blue

: Violet

: Yellow

Circuit Board Block Diagram

HOT

NEUTRAL

10A(FUSE)

VARISTOR

VARISTOR ARRESTER

EARTH

VARISTOR

FREEZE PREVENTION

HEATER

DC170V

DC12V

DC170V

RELAY 1

RELAY 2

RELAY 1

RELAY 2

DC15V

CONTROLLER

A

C

B

POWER

PRIMARY

SECONDARY

COMBUSTION FAN

E

D

IG

15V POWER CIRCUIT

GND

GND

GND

WATER FLOW SENSOR

WATER SERVO - MAIN

HIGH LIMIT

SWITCH

SOLENOID VALVE 0

SOLENOID VALVE 1

SOLENOID VALVE 2

SOLENOID VALVE 3

IGNITER

POWER CONTROL CIRCUIT

GAS PROPORTIONING VALVE

FLAME DETECTING CIRCUIT

FLAME ROD

EARTH

THERMAL FUSE

5V POWER CIRCUIT

DRIVING CIRCUIT

GAS SOLENOID VALVE

CPU           CENTRAL PROCESSING UNIT

A
B

C

D

E

FAN CONTROL

OUTPUT

FAN ROTATION

SPEED INPUT

FAN CURRENT

VALUE INPUT

THERMISTOR

- AIR
THERMISTOR

- HOT WATER
THERMISTOR

- COLD WATER
THERMISTOR

- HEAT EXCHANGER

FAN

PULSE

CONTROL

CIRCUIT

Sub-CPU

SUB

CONTROL

UNIT

FLUSH CONNECTOR

<NR501-OD, NR662-OD>

25

Содержание NRC661-DV

Страница 1: ...ance Rev Dec 2013 Contents Important Safety Information 2 1 Speci cations Performance Table 3 2 Dimensions 9 3 Components 12 4 Operating Principle 16 5 Operation Flow Chart 19 6 Wiring Diagram 25 7 Tr...

Страница 2: ...short circuit any safety device on this appliance If a safety device is not functioning properly replace the part Do not under any cir cumstances short circuit the part Exhaust and gas leakage cautio...

Страница 3: ...nger Supply Consumption Power Vented NG 35W LP 38W Freeze Prevention 139W 20 5 520mm x 13 8 350mm x 6 7 170mm N A N A NR501 OD NR662 OD 3 Speci cation NR662 OD Outdoor Wall Mounted Direct Ignition 15...

Страница 4: ...evention 139W 23 6 600mm x 13 8 350mm x 6 7 170mm 20 5 520mm x 13 8 350mm x 6 7 170mm NRC661 DV OD Speci cation NRC711 DV NRC711 OD Indoor Wall Mounted Outdoor Wall Mounted Direct Ignition 15 150 psi...

Страница 5: ...tervals 6 Options 120 F 50 C 130 F 54 C 135 F 57 C 140 F 60 C Original is 120 F 50 C Item Gas Consumption Maximum Hot Water Capacity Capacity Range Temperature Settings Default Temperature Options NG...

Страница 6: ...emp 82 Flow Rate GPM Set temperature 80 90 100 110 120 130 140 150 160 0 1 2 3 4 5 6 7 8 NR501 OD NRC661 DV NRC661 OD Spring Fall Inlet water temp 64 80 90 100 110 120 130 140 150 160 0 1 2 3 4 5 6 7...

Страница 7: ...15 20 25 30 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 Flow rate GPM Pressure loss psi 0 10 20 30 40 50 60 Pressure loss Ft of head 0 5 10 15 20 25 30 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 Flow rate GPM Pressu...

Страница 8: ...Pressure loss psi 0 10 20 30 40 50 60 70 80 90 Pressure loss Ft of head 0 5 10 15 20 25 30 35 40 45 50 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 Flow rate GPM Pressure loss psi 0 10 20 30 40 50 60 70 80 90...

Страница 9: ...ASE NR501 OD HOT WATER OUTLET 1 8 45mm COLD WATER INLET 1 9 49mm GAS INLET 2 0 50mm 2 Dimensions NR501 OD 1 5 37mm AIR INLET DISPLAY WINDOW COLD WATER INLET HOT WATER OUTLET WATER DRAIN VALVE WIRING T...

Страница 10: ...ATER INLET 3 4 HOT WATER OUTLET 3 4 CONDENSATE DRAIN 1 2 0 4 10mm 0 4 10mm 2 0 50mm 4 7 120mm 3 3 85mm 2 0 3 0 5 6 5 13mm OBLONG HOLE 4 0 5 13mm 21 3 542mm 0 4 10mm 0 4 10mm 19 2 487mm 1 2 31mm 6 7 17...

Страница 11: ...WIRING THROUGHWAY COLD WATER INLET 3 4 HOT WATER OUTLET 3 4 CONDENSATE DRAIN 1 2 0 4 10mm 0 4 10mm 2 0 50mm 4 7 120mm 3 3 85mm 2 0 3 0 5 6 5 13mm OBLONG HOLE 4 0 5 13mm 21 3 542mm 0 4 10mm 0 4 10mm 19...

Страница 12: ...12 NR501 OD Thermistor Cold Water Thermistor Hot Water Manifold Pressure Tap Thermistor Cold Water Thermistor Hot Water Manifold Pressure Tap 3 Components NR662 OD...

Страница 13: ...Thermistor Cold Water Thermistor Hot Water Manifold Pressure Tap Thermistor Cold Water Thermistor Hot Water Manifold Pressure Tap NRC661 DV NRC661 OD 13...

Страница 14: ...NRC711 DV 14 NRC711 OD Thermistor Cold Water Thermistor Hot Water Manifold Pressure Tap Manifold Pressure Tap Thermistor Cold Water Thermistor Hot Water Manifold Pressure Tap...

Страница 15: ...r is on set temperature is displayed for one minute When hot water ows If there is a problem with the unit a numerical error code will ash When unit is initially plugged into power set temperature is...

Страница 16: ...Thermistor Cold Water Thermistor Hot Water Gas Proportioning Valve 4 Operating Principle 16 NRC661 DV OD NRC711 DV OD...

Страница 17: ...NR501 OD NR662 OD Thermistor Cold Water Thermistor Hot Water Gas Proportioning Valve 17...

Страница 18: ...one is installed 5 When the demand for hot water ceases the unit will stop heating When the flow sensor detects that the rate has dropped below the minimum rate for continued burning the gas valves w...

Страница 19: ...19 5 Operation Flow Chart Water heating Shutdown procedure Ignition operation NR501 OD...

Страница 20: ...Water heating Shutdown procedure Ignition operation 20 NR662 OD...

Страница 21: ...s turn OFF Has 15 min passed C C YES YES YES YES YES YES YES NO YES NO NO NO NO NO NO Thermistor Air more than 14 F 10 C YES NO Thermistor Air more than 14 F 10 Thermistor Air more than 14 F 10 NO NO...

Страница 22: ...d does not 0 5 A or less Outlet water temp is too high Thermistor Cold Water open or shorted Thermistor Heat Exchanger open or shorted Fan speed abnormality Exhaust temperature is too high Overheat pr...

Страница 23: ...ter heating Shutdown procedure Ignition operation Note 1 1 2 3 4 5 6 7 8 9 Note 2 1 2 3 Note 3 1 2 4 Note 4 1 2 3 4 F 1 2 3 4 5 6 7 8 9 A b C d E F 1 0 1 2 3 4 5 6 2 0 1 2 3 4 5 6 7 8 9 23 NRC711 DV O...

Страница 24: ...200 500rpm 611 61 Thermistor Exhaust 26 F or more Fan Turn OFF No error code 611 612 614 61 Thermistor Exhaust 46 or more Fan Turn OFF YES NO YES NO YES NO YES NO YES NO YES NO Fan motor operation fl...

Страница 25: ...FAN E D IG 15V POWER CIRCUIT GND GND GND WATER FLOW SENSOR WATER SERVO MAIN HIGH LIMIT SWITCH SOLENOID VALVE 0 SOLENOID VALVE 1 SOLENOID VALVE 2 SOLENOID VALVE 3 IGNITER POWER CONTROL CIRCUIT GAS PRO...

Страница 26: ...IMIT SWITCH SOLENOID VALVE 0 SOLENOID VALVE 1 SOLENOID VALVE 2 SOLENOID VALVE 3 IGNITER POWER CONTROL CIRCUIT GAS PROPORTIONING VALVE FLAME DETECTING CIRCUIT FLAME ROD EARTH WATER LEVEL ELECTRODE DETE...

Страница 27: ...ATER FLOW SENSOR WATER SERVO MAIN HIGH LIMIT SWITCH SOLENOID VALVE 0 SOLENOID VALVE 1 SOLENOID VALVE 2 SOLENOID VALVE 3 IGNITER POWER CONTROL CIRCUIT GAS PROPORTIONING VALVE FLAME DETECTING CIRCUIT FL...

Страница 28: ...or frozen 20 Error Codes Remote Controller 11 760 90 73 72 71 70 33 32 35 51 91 94 61 31 30 16 14 12 20 11 331 321 351 353 51 511 611 311 301 14 121 122 20 90 731 72 71 70 91 941 Check connection fro...

Страница 29: ...DC 1 16 V CN59 W O W G W V W BK 10 12 DC 14V 16 V R BL 3 CN63 9 12 Y BL Y BL CN63 1 CN63 2 DC 1 4 5 V 32 212 F 0 100 C Note 4 CN63 3 CN63 2 DC 1 4 5 V 32 212 F 0 100 C Note 4 BL Electrode 1 1 1 CN27...

Страница 30: ...Note 5 BL Electrode 1 1 1 CN27 CN27 2 2 6 3 CN10 CN10 11 When valve is open Coil resistance CN10 11 When valve is open Coil resistance Gas Solenoid Valve 2 CN10 Coil resistance Flame Rod CN78 10 kHz...

Страница 31: ...rs settings 733 Circuit Board setting abnormality Dip Switch settings 734 Circuit Board abnormality 768 76 Display Window transmission abnormality 90 90 Air flow abnormality Unit shuts off 901 Combust...

Страница 32: ...uit Board Fuse Dip Switch Data Display 1 2 3 4 R BL BL BL CN142 DisplayWindow Circuit Board Dip Switch CN89B Data Display 1 2 3 4 R BL BL BL CN142 If there iscord damage short circuiting or ground fau...

Страница 33: ...right do not apply in this case 1 How to check The Unit will not run to prevent scalding hot water temperature 001 Water inlet temperature is too high If possible decrease water inlet temperature 002...

Страница 34: ...12 13 14 15 1 2 3 4 5 6 7 4 3 2 1 BR Y BL R R O Y W BL R W O GY BK W BL W BL 2 1 BL W BK BK 4 2 W W Fuse 3 1 R R G 3 2 1 BL 6 5 4 3 2 1 BK R W W 3 2 1 R BL G BL W R Y BK BK W W BK W CN63 CN135 CN78 C...

Страница 35: ...nect the electrical power The Circuit Board and Fan Motor may be damaged otherwise 14 13 12 11 10 9 8 7 6 5 4 3 2 1 BL W R Y BK BK W W BK W Check whether the primary gas pressure is normal Check the W...

Страница 36: ...t is described in page 24 It is not necessary to replace the Display Window Circuit Board The procedure of Manifold Gas Adjustment is described in page 24 It is not necessary to replace the Display Wi...

Страница 37: ...m in gas supply poor connection of ground wire defectiv Normal Normal Normal Abnormal Abnormal Abnormal Abnormal Check whether the primary gas pressure is normal Check whether the manifold gas pressur...

Страница 38: ...8 Blue 11 35 65 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 BL R W O GY BK W BL W BL It is not necessary to replace the Display Window Circuit Board It is not necessary to replace the Display Window Circuit...

Страница 39: ...on if connected and open the hot water xture The unit starts sparking and then connectthe Dummy Flame between CN78 Blue 1 CN101 Green 1 earth Check whether Burner On Indicator is lit 72 should beindi...

Страница 40: ...Y BK W BL W BL CN10 Display Window Circuit Board Dip Switch Data Display 1 2 3 4 R BL BL BL CN142 14 13 12 11 10 9 8 7 6 5 4 3 2 1 12 11 10 9 8 7 6 5 4 3 2 1 3 2 1 W Y O R BK V G O Y W 4 3 2 1 BL BL B...

Страница 41: ...cuit Board Power Circuit Board Circuit Board 1 2 3 CN63 Between White 1 Black 2 Check the Thermistor Hot Water resistance Check for the Water Servo Main Check for improper connection of wiring When me...

Страница 42: ...BR Y BL R R O Y W BL R W O GY BK W BL W BL 2 1 BL W BK BK 4 2 W W Fuse 3 1 R R G 3 2 1 BL 6 5 4 3 2 1 BK R W W 3 2 1 R BL G BL W R Y BK BK W W BK W CN63 CN135 CN78 CN59 CN142 CN104 CN27 CN92 CN101 CN...

Страница 43: ...1 BL 6 5 4 3 2 1 BK R W W 3 2 1 R BL G BL W R Y BK BK W W BK W CN63 CN135 CN78 CN59 CN142 CN104 CN27 CN92 CN101 CN10 CN75 CN102 CN89A CN89B CN42 Main Circuit Board Power Circuit Board Circuit Board 1...

Страница 44: ...Board Power Circuit Board Circuit Board 1 2 3 Check the Thermistor Exhaust open or short circuit CN63 Between Black 6 Black 2 When measuring the resistance disconnect the connector and check the male...

Страница 45: ...Valve drive circuit abnormality Error Codes Description 51 511 51 Display Window Remote Controller It is not necessary to replace the Display Window Circuit Board Normal Abnormal Replace the Circuit...

Страница 46: ...e g a k c o l b y r a r o p m e t Please explain this to the customer Replace the Fan Motor Replace the Fa n Motor Check the voltage to the Fan Motor Fan Motor is rotating 4 3 2 1 BR Y BL R CN27 Fan...

Страница 47: ...dow Remote Controller 731 Improper maintenance writers setting Check for improper setting of maintenance writers on Circuit Board c t e e p y t l e d o m e p y t s a g e h t x e 733 Dip Switch setting...

Страница 48: ...mal CN142 Blue 4 on Main Circuit Board CN142 Blue 4 on Display Window Circuit Board 1 or less Check the wiring connection between Main Circuit Board and Display Window Circuit Board Check the connecti...

Страница 49: ...ay Window Remote Controller 1 Check air inlet for blockage or obstruction 2 Check exhaust for blockage or obstruction 3 Check whether the fan motor is normal ex Clogging of fan blades etc 4 Check the...

Страница 50: ...CN10 Display Window Circuit Board Dip Switch Data Display 1 2 3 4 R BL BL BL CN142 14 13 12 11 10 9 8 7 6 5 4 3 2 1 12 11 10 9 8 7 6 5 4 3 2 1 3 2 1 W Y O R BK V G O Y W 4 3 2 1 BL BL BL R 1 2 3 4 5...

Страница 51: ...mistor Hot Water are normal Check the thermistor resistance Replace the Circuit Board set Disconnect electrical power pass through the water to the Unit e and then reconnect electrical power Check the...

Страница 52: ...nce for error code 908 If the Unit detects Error Code 901 6 times the Unit is locked for safety 1 Check air inlet for blockage or obstruction 2 Check exhaust for blockage or obstruction 3 Check the Fa...

Страница 53: ...t Combustion abnormality Unit is locked Error Codes Description 99 99 Display Window Remote Controller NG LP NG LP NG LP 104 Unit is locked 99 NRC711 OD NG LP 110 NRC711 DV NG LP 104 NRC711 OD 110 NRC...

Страница 54: ...d hold both the Mode and Maximum Manifold Pressure Set Button simultaneously for more than 5 seconds This procedure has to be perfomed within 10 minutes after reconnecting the power How to reset the l...

Страница 55: ...2 3 4 5 6 x 100 hour 2 0 1 2 3 4 5 6 7 8 9 x 10 hour Ex If the code H25 is displ aye d it means 250 hours 2 1 Reconnect the blue connector f r And then replace the Heat Exchanger To cancel the lockou...

Страница 56: ...itor List for Scale Build up trouble C Contact a service professional or download the procedure from http support noritz com Case 3 Flush the Heat Exchanger regularly Not displayed the error code For...

Страница 57: ...water inlet valve V1 and the water outlet valve V2 3 Connect the one drain hose H1 to the drain valve V3 and then the other to the circulating pump 4 Connect the drain hose H2 to the circulating pump...

Страница 58: ...ur passes the code C00 y Do not disconnect the blue connector f on the Circuit Board 7 Turn p 1 minute passes ow 3 Cleaning the Heat Exchanger rinsed and cleaned out of the water heater Below is the w...

Страница 59: ...r more than 2 seconds or leave it alone for more than 10 minutes 1 The maintenance monitor data No will appear on the display for 2 seconds and then the data will appear 2 In order to switch to other...

Страница 60: ...0 1 X 1 X 0 1 X 0 1 X 0 1 X 1 X 1 X 1 X 1 X 1 X 1 X 1 X 1 X 10 0 1 X 0 1 X 0 1 000 036 100 110 100 110 Disp Range 014 050 Disp Range 10 010 Z 126 A 101 B 102 C 103 Z 226 A 201 B 202 C 203 Z 326 A 301...

Страница 61: ...old circuit board to the new circuit board see Step 4 New Circuit Board Connector CN75 4 Use the blue and white data transfer cable supplied with the new circuit board to connect the CN75 connection f...

Страница 62: ...with a digital manometer and adjust if necessary For each MW the PRIORITY light will either be on indicating that the MW is ON or off indicating the MW is OFF You can toggle each MW to be ON or OFF u...

Страница 63: ...t has a remote controller turn off the POWER button on the remote controller so it is blank and wait for 10 seconds then disconnect electrical power to the unit for about 30 seconds 3 Reconnect electr...

Страница 64: ...water heater as with any gas appliance is the sole responsibility of the installer The installer must be professionally trained to do such work and must always follow all local and national codes and...

Страница 65: ...020 2 680 2 430 2 230 2 080 1 950 1 840 1 630 3 11 300 7 780 7 780 5 350 4 740 4 290 3 950 3 760 3 450 3 260 2 890 4 23 100 15 900 12 700 10 900 9 660 8 760 8 050 7 490 7 030 6 640 5 890 Table 1 For...

Страница 66: ...15m 18m 21m 24m 27m 30m 38m 1 2 454 312 250 214 190 172 158 147 138 131 116 3 4 949 652 524 448 397 360 331 308 289 273 242 1 1 787 1 228 986 844 748 678 624 580 544 514 456 1 1 4 3 669 2 522 2 025 1...

Страница 67: ...ready for manifold gas pressure adjustment When the Data Display does not change repeat Step 1 again Note 1 Use the following procedure to adjust the manifold gas pressure only if it can be done with...

Страница 68: ...g turn off the power button or power supply and wait until the unit cools before performing maintenance CAUTION Be sure to do Check For laundry newspaper timber oil spray cans and other combustible ma...

Страница 69: ...eplacement of the neutralizing agent will be required Refer to the instructions supplied with the neutralizer for suggested replacement intervals Do not use benzene oil or fatty detergents to clean th...

Страница 70: ...the Heat Exchanger must be flushed is set to Flushing Mode from an authorized Noritz wholesaler 70...

Страница 71: ...located 71...

Страница 72: ...ures 3 With a bucket ready remove the inlet and outlet drain plugs about 0 2 gallon 0 9L will drain out 4 Take the water drain valve with water lter out of the inlet See illustration to right 5 Clean...

Страница 73: ...Treatment Guidelines If this water heater will be installed in an application where the supply water is hard the water must be treated with either the Noritz H2Flow or ScaleShield or a water softener...

Страница 74: ...s a result of poor water quality is not covered by the Limited Warranty To ensure full warranty coverage treat or condition water that exceeds the target levels provided in this table Source EPA Natio...

Страница 75: ...ion press the Power On Off Button on the optional remote controller To keep the water heater off let the unit sit for 30 sec to return to the original display When changing the temperature make sure t...

Страница 76: ...n water through the unit when it is OFF but in this case freeze prevention is more important Remember to set mixing valves and xtures to their original levels before using the unit again to prevent sc...

Страница 77: ...power supply after 2 minutes or more pass from operation of 2 Using the remote controller Turn off the power supply 4 Close the water supply valve 5 Fully open all hot water xtures 6 Turn the drain p...

Страница 78: ...charge from the drain pipe within 15 minutes of use However depending on the season and or installation site conditions it may take longer If water does not appear at the end of the drain line a quali...

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