Hubbell Electric Heater Company J User's Manual
Contents
1. VALVE Rear View Left Side View KNOCKOUTS LEFT SIDE AND BOTTOM 3 4 x 1 x 1 1 4 Bottom View 24 To 58 KW DIMENSIONS 29 1 8 APPROX 24 RELIEF 31 4 Shipping Weight 110 Ibs VALVE 3 4 NPT Left Side View NIPPLE Rear View 3 1 4 KNOCKOUTS LEFT SIDE 1 1 1 2 x 2 BOTTOM 2 1 2 amp 1 1 1 2 x 2 Bottom View 3 1 2 ese RELIEF VALVE 3 4 NPT INLET TEE 3 4 NPT OUTLET NIPPLE TOT 25 3 8 16 1 2 Shipping Weight 180 Ibs 23 1 2 2 5 8 2 Bottom View Right Side View A KNOCKOUTS LEFT SIDE 1 1 2 x 2 7 gt BOTTOM 1 1 2 x 2 amp 3 4 x 1 x 1 1 4 CONSTRUCTION TANK The storage tank is designed manufactured and stamped in accordance with ASME section VIII Division 1 The tank is constructed of type 304L stainless steel for maximum tank longevity and fabricated by all welded construction and 18 designed for a maximum allowable working pressure of 150 psi 225 psi TP TANK CONNECTIONS The heater is supplied with separate connections for the cold warm inlet and the hot water outlet Water entering the warm water inlet and leaving through the hot water outlet 1s evenly circulated by means of a diffuser within the tank A 4 inch FNPT connection is provided for mounting a combination safety temperature and pressure relief valve An overflow line should be utilized from the relief valve outlet to a floor drain S2. Is there 208 240V at the load side of the transformer 480V models only No gt Replace Transformer Yes Diagram 4 Is there 208 240V across terminals 1 amp 2 of J5 on the control board see diagram 4 208 240V No Check wiring Yes v Re seat ribbon cable from control board to display No Contact factory Replace digital display Yes Is there 24VDC 5VDC across D1 amp ground J7 on the control board Replace control board A 25 10 Fill tank and check around element for any leaks MAGNETIC CONTACTOR l 2 3 4 5 26 SECTION V SERVICING amp REPLACEMENT OF PARTS WARNING CAUTION Before servicing or replacing any part make sure to turn the power supply to the unit OFF HEATING ELEMENT 1 Disconnect power from unit 2 Shut off incoming water supply 3 Attach hose to drain connection 4 Lift manual release lever on relief valve to let air into system or break union on outgoing water line 5 Drain water from tank 6 Disconnect the wires from the heating element terminals 7 Unscrew element with a 1 7 8 6 point socket with no bevel O Ring Groove O Ring Terminal Connections 220 Buna N O Ring 8 Install new 220 Buna N o ring gasket and install new heating element NOTE Hubbell recommends lubricating the o ring
3. Wire Size Torque Ginebs Torque ft lbs Plenent Tak NA S Wire toBlement Al Probeto Tank Al NA _ O iiir 1 38 Transformer Al AL 15 12 _ Board C25DNF315B 14 12 C25DNF330B C25DNF340B Wire to C25DNF350B 16 14 9 25FNF B a 86 44 22 92 14 10 Load T HOHA te 10 Load HOHA Control Board to All N A 10 0 83 Panel Display to Base All Other Components to All N A 20 1 67 Panel 30 SECTION WARRANTY INFORMATION LIMITED WARRANTY 1 PRODUCT WARRANTY Hubbell warrants the booster heater it manufactures and its components the Product to be free from defects in materials and workmanship under normal use and service for the period of time identified below beginning from the date of installation provided that the product is installed within three 3 months of date of shipment from Hubbell and when the Product is installed and maintained in accordance with Hubbell s written instructions see operators manual for details Owner must establish the Product s purchase date by means satisfactory to Hubbell in its sole discretion TANK and COMPONENTS One 1 year parts and labor TANK ONLY Ten 10 years Non Pro Rated REPLACEMENT PARTS Thirty 30 days parts only no labor from date of purchase SUCH WARRANTIES DO NOT COVER e Product
4. 1 Place the heater on a solid level foundation in a clean dry location as near as possible to the dish washing machine 2 The water heater should be protected from freezing and waterlines insulated to reduce energy and water waste 3 Leave a minimum of 18 clearance for element withdrawal and control access 4 Do not install in an area where flammable liquids or combustible vapors are present SLIDE BRACKETS FOR HANGING SUPPORT MOUNTING l Weld slide rails to bottom of dishtable Spacing should be 17 for J6 models 4 BOTTOM OF DISHTABLE to 18kW and 22 for J6 models 24 to V FOR 16 24 TO 58 5 KW 7 P 58 5kW 716 models not designed for use with slide brackets Attach slide bracket angles to heater ATTACH SLIDE BRACKET ANGLE TO HEATER JACKET with 8 sheet metal screws It will be necessary to drill 1 8 holes into heater jacket for screw pilot holes Slide heater onto slide rails under dishtable PIPING INSTALLATION See Diagrams NOTES Dielectric couplings should be used in connecting dissimilar metals to prevent electrolysis No check valve may be installed in the supply line to the booster All shut off valves must be gate or ball valves not globe valves To minimize heat loss and maximize efficiency hot water piping should be insulated Teflon tape should be used on all NPT threaded pipe connections Connect the cold warm water inlet and hot water outlet to the approp
5. Brass Pressure T amp P Relief Valve 3 Union j 2 Water Treatment Reducing Valve with sS System optional Built In Bypass amp 3 Temperature a Eanes m es Pressure Gauge 21 aL ES Outlet Gate Valve T amp P Relief Valve Piping Air Gap Not Supplied ot PS oy eg HET a Sis ws ea E xq i e _ Drain Valve Not Supplied Must Conform To Code Li LI J16 Plumbing Connections Front View T amp P Relief Valve 22 T amp P Relief Valve Piping Temperature Kes Air Gap Must Conform Pressure Aa 7 ES J Code Gauge a Brass 4 mmi Pee Reducing System Valve with 4 Temperature shock optional Built in 4 Pressure Gauge Absorber Optional Optional Gate Valve Bypass Op OF Not Supplied a eae E y sem x Inlet 92 ra 1 4 ES 01 0 LS l 2 Drain Valve Union Not Supplied 34 Union 18 SECTION III SCHEDULED MAINTENANCE AND OPERATION WARNING CAUTION Before performing any maintenance procedure make certain the power supply is turned OFF and cannot accidentally be turned on MAINTENANCE AND OPERATION The water heater 1s automatic in its operation It will maintain a full tank of water at the temperature setting of the controller The water heater should not be tur
6. 13 NT L2 Ee 10 WT L2 19 45 J2 Control 3 1 Module amp Display Control Low Water gt amp Hi Limit Probe Leak Detection Probe 16 Control Low Water amp Hi Limit Probe Leak Detection Probe J7 o i Control Module amp Display J7 o i J2 Control Ja 7 Module amp Display Control Low Water amp Hi Limit Probe Leak Detection Probe 10 NT 13 WT Control Module amp Display J2 Control Ja 7 Module amp Display Control Low Water amp Hi Limit Probe Leak Detection Probe Control Low Water amp Hi Limit Probe Leak Detection Probe 12 NCB L1 L2 L3 i Module amp l n Control i Control Low Water amp Hi Limit Probe Leak Detection Probe 14 Control Low Water amp Hi Limit Probe Leak Detection Probe 4 12 L1 L2 L3 Control Module amp Control Low Water amp Hi Limit Prob i Limit Probe Detection Probe L1 L2 L3 jpL Control Module amp Control Low Water amp Hi Limit Probe is Leak Detection Probe Note Wiring diagrams 3 5 6 7 NT 7 WT and 11 are obsolete 17 76 Plumbing Connections Rear View Temperature Pressure Gauge shock Optional Absorber Optional
7. 2 Compare this with the ohms the thermistor should supply for the actual temperature in the tank Do ohms Replace control match i Replace probe OK Anora buttons Individual display Re seat ribbon y Re seat ribbon elements do not cable from display do not work but cable from display work or unusual to control board Be display is to control board characters are sure ribon cable is operational displayed not reversed 1 Verify that the display is properly seated to the base and that the buttons click when pressed i No Replace control board Replace digital display Replace digital display No Replace control board Is the circuit breaker tripped at source No Display Reset circuit breaker No Is the circuit breaker tripped inside heater if supplied Yes gt Reset circuit breaker Press ON OFF button on heater No Is correct voltage measured at power distribution block or line side of contactor for No each phase Check incoming power Yes Is there 480V at the line side of the transformer 480V models only Yes No Check wiring
8. failure including but not limited to the tank and or heating elements caused by liming sediment buildup chemical corrosion chlorine corrosion or freezing e Product misuse tampering or misapplication accidental damage improper installation or the application of improper voltage e Costs incurred for shipping delivery handling and or administrative charges e For the tank warranty after the first year all labor shipping installation costs and components other than the tank are the responsibility of the owner e With respect to labor warranty within the first year overtime holiday weekend or any other non standard labor rate e Excessive and unreasonable labor rates and or travel expenses as determined by Hubbell in its sole discretion THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR PATENT OR OTHER INTELLECTUAL PROPERTY RIGHT INFRINGEMENT 2 LIMITATION OF REMEDIES AND DAMAGES Hubbell s liability and Buyer s exclusive remedy hereunder will be limited solely at Hubbell s option to repair or replacement by a Hubbell authorized service agency other than where Buyer is located outside of the United States or Canada in which case Hubbell s liability and Buyer s exclusive remedy hereunder will be limited solely to replacement of part under warranty with respect to any claim ma
9. off The pressure reducing valve is adjustable from 10 to 35 psi The set screw located at the top of the diaphragm adjusts the pressure turn clockwise to increase the pressure and counter clockwise to decrease the pressure Install in line pressure and temperature gauge s NOTE The temperature sensing element must be in the water stream Install the combination temperature and pressure safety relief valve in the tapping provided Note that this is required by law for safety considerations Install into provided tapping Manual Release Lever Temperature Probe Outlet to floor drain Temperature and Pressure Relief Valve Install a relief valve overflow pipe to a nearby floor drain NOTE Relief valve discharge piping limitations Termination to be plain end no threads Maximum 30 feet Maximum four 4 elbows No reduction in line size No valve of any type to be installed between the relief valve and tank or in the drain line Termination to be 6 inches above the drain A shock absorber is recommended in the hot water outlet line to soften the water hammer caused by automatic dishwasher solenoid valves 7 Install the dial temperature and pressure gauge in the outlet line The temperature sensing element must be In the hot water stream and the gauge must be mounted upright Temperature and pressure gauge with 1 2 NPT thread Temperature and pressure gauge with 1 2 N
10. off power supply Remove front cover Visually inspect around heating element for evidence of leaks Rub around the heating element with a rag Check for any evidence of moisture If moisture 1 present or a water drip is observed follow procedure outlined in Section V CAUTION The area around the heating element may be hot 4 Scale and mineral build up on heating elements is a normal condition It 1s recommended that the heating element be removed for examination and if scaled should be cleaned In an area of known hard or poor water conditions the elements may need to be checked more frequently This will improve the efficiency of the heater and increase the element life NOTE Failure of the elements due to scale and mineral build up is not covered under warranty See warranty for complete details a b d POOR UE UED Shut off power supply Drain the tank Remove front cover Disconnect the element wiring It is recommended that one element at a time 1s removed to simplify re wiring Unscrew element Lime scale removal i Place limed ends of the heating element in a de limer solution designed for potable water applications and allow lime to dissolve Do not allow de limer to contact heating element terminals Other scale removal i Silicates sulfates and aluminates must be removed by scraping or other mechanical means De limers will not dissolve these types of scale Flush the cleaned ends of the ele
11. 0 30 7 25 12 12 10 10 WT 600 3 14 7 14 7 47 1 20 12 12 12 yo 14 208 86 5 86 5 2 4 110 6 8 2 i 4 DB 208 3 50 0 50 0 4 8 65 8 10 6 10 NT 18 240 75 0 75 0 3 2 95 6 3 4 DB 240 3 43 3 43 3 6 4 55 10 12 6 10 NT 480 3 21 7 21 7 25 6 30 12 12 10 24 10 WT 600 3 18 1 18 1 38 3 25 12 12 12 14 Unit Branch Phase Phase Min Feed Internal Element Copier Power Conduit kW Volt Ph Amp Aras Diaw Resistance Breaker or Power Wire Jumper Feed Wire Size Size Diagram Draw Ohms Fuse Size Size Wire Size 208 1 115 4 38 5 1 8 145 10 12 1 0 Ly 3A 208 3 66 6 66 6 3 6 85 8 10 4 D 13 NT 24 240 1 100 0 33 3 2 4 130 12 12 1 11 4 3A 240 3 57 7 57 7 4 8 75 8 10 4 1 13 NT 480 3 28 9 28 9 19 2 40 12 12 9 13 WT 600 3 22 6 22 6 30 6 30 12 12 10 Vo 15 208 1 130 0 43 3 1 6 165 10 12 2 0 1H 6A 208 3 74 9 37 5 3 2 95 10 12 3 T 12 NCB 27 240 1 112 5 37 5 2 1 145 10 12 1 0 14 3A 240 3 65 0 65 0 4 3 85 8 10 4 1 13 NT 480 3 32 5 32 5 17 1 45 12 12 9 Vo 13 WT 600 3 24 2 27 2 25 5 35 12 12 8 Vo 15 208 1 144 2 48 1 1 4 185 8 10 3 0 1 6 208 3 83 3 41 6 29 105 10 12 2 12 NCB 30 240 1 125 0 41 7 1 9 160 10 12 2 0 1 6 240 3 12 2 36 1 3 8 95 10 12 3 I 12 NCB 480 3 36 1 36 1 15 4 50 10 12 8 Vo 13 WT 600
12. 3 29 4 29 4 23 6 40 12 12 8 Vo 15 208 1 173 1 57 7 1 2 220 8 10 4 0 2 6A 208 3 99 9 50 0 2 4 125 8 10 1 131 12 NCB 36 240 1 150 0 50 0 1 6 190 8 10 3 0 110 240 3 86 6 43 3 2 2 110 10 12 2 I 12 NCB 480 3 43 3 43 3 12 8 55 10 12 6 V 13 WT 600 3 36 2 36 2 19 1 50 10 12 8 15 208 1 187 5 62 5 1 1 235 8 10 250 2 208 3 108 3 54 1 22 140 8 10 1 0 12 NCB 39 240 1 162 5 54 2 1 5 205 10 4 0 10 6A 240 3 93 8 46 9 3 0 120 10 12 1 p 12 NCB 480 3 46 9 46 9 11 8 60 8 10 6 3 4 13 WT 600 3 30 2 36 2 19 1 50 10 12 8 3 4 15 208 1 195 0 65 0 1 1 245 8 10 250 2 6A 208 3 112 6 56 3 2 1 145 8 10 1 0 154 12 NCB 40 5 240 1 168 8 56 3 1 4 215 8 10 250 1 6 240 3 97 4 48 7 2 8 125 10 12 1 p 12 NCB 480 3 48 7 48 7 11 4 65 8 10 4 Yq 13 WT 600 3 36 2 36 2 19 1 50 10 12 8 3 4 15 208 3 119 1 59 5 1 9 150 8 10 2 0 131 12 NCB 240 1 187 5 62 5 1 3 235 8 10 250 2 6A 45 240 3 108 3 54 1 2 6 140 8 10 1 0 114 12 NCB 480 3 54 1 54 1 10 2 70 8 10 4 3 4 13 WT 600 3 42 2 42 2 16 4 55 10 12 6 Yq 15 208 3 149 9 74 9 1 6 190 6 8 3 0 12 54 240 3 129 9 65 0 2 1 165 8 10 2 0 10 12 480 3 65 0 65 0 8 5 85 8 10 4 1 13 WT 600 3 54 3 54 3 12 8 70 8 10 4 1 15 208 3 159 9 79 9 1 5 200 6 8 4 0 10 12 58 5 240 3 140 7 70 4 2 0 180 6 9 2 0 112 12 480 3 70 4 35 2 7 9 90 12 12 3 1 12 WT 600 3 54 3 54 3 12 8 70 8 10 4 1 15 Notes 1 Power feed wire sizing is based on using 75 C Cu THHN wire with feeder branch protection rate
13. 5DNF340B 65 Amp Resistive 50 Amp Inductive 208 240 VAC Coil 250 508 1 75 Amp Resistive 60 Amp Inductive 208 240 VAC Coil 258 3608 00 90 Amp Resistive 75 Amp Inductive 208 240 VAC Coil IC25FNF375B U U Elements Note Each element is supplied with on O Ring 00 6500 1 1 240 556 Extra O Ring K220Buna N asr Misc Electrical ConmiBoad 02222222 no Digital Display Module includes overlay hn Ul RbbonCableEdenson RBBONCABEJI D amp splayOvetay ovERAYJMODE Probe includes 9115 80 50 00 5 Transformer 480 2089 ls Transformer 60019541 805033503 firansformer 380 185 B050385 8 Power Distribution Block 75amp2pole le Power Distribution Block175 amp 3pole le Power Distribution Block 310 amp 3 pole Diffuser Assembly e FUSER Jj RJ45 Pioioi for P65 Probe Testng P69 R45 TESTER Remote AamPlugAdapter PLUG ADAPTER Wire 18 200C black whitered yellow Teel __ WIRE amp 18200C COLOR Wire 12 200C blue orred Tezel750 WIREs12200C COLOR Wire 10 200C blue orred Tetzel750 WIRE 10200 Wire 8 200C blue orred Tetzel 750 WIRE 48 200C COLOR Wire 6 200C black Tetzel 750 __ WIRE 6 200C BLACK 29 SECTION VII TORQUE VALUES x Par
14. 8 10 12 12 14 10 WT 600 3 6 0 6 0 114 8 10 12 12 14 127 14 208 32 5 32 5 6 4 45 12 12 27 4 208 3 18 7 18 7 12 4 25 12 12 10 10 NT 7 240 30 5 30 5 8 2 40 12 12 8 4 240 3 17 6 17 6 16 5 25 12 12 10 ya 10 NT 480 3 8 4 8 4 65 8 15 12 12 14 Va 10 WT 600 3 6 8 6 8 102 0 10 12 12 14 Va 14 208 43 3 43 3 4 8 55 10 12 6 4 208 3 25 0 25 0 9 6 35 10 12 9 10 NT 9 240 315 6 4 50 10 12 8 Vo 4 240 3 21 7 21 7 12 8 30 10 12 10 10 NT 480 3 10 8 10 8 512 15 12 12 14 22 10 WT 600 3 9 1 9 1 76 5 15 12 12 14 22 14 208 1 48 8 48 8 4 3 65 9 10 6 V 4 208 3 294 29 8 2 40 12 12 8 A 10 NT 10 5 240 43 8 43 8 5 5 55 10 12 6 Yq 4 240 3 25 3 25 3 11 0 35 12 12 22 10 NT 480 3 12 6 12 6 43 9 20 12 12 12 10 WT 600 3 10 2 10 2 68 1 15 12 12 14 yo 14 208 Sud 57 7 3 6 75 8 10 4 1 4 208 3 33 33 33 3 4 2 45 12 12 9 22 10 NT 12 240 1 50 0 50 0 4 8 65 8 10 6 4 240 3 28 9 28 9 9 6 40 12 12 9 Va 10 NT 480 3 14 4 14 4 38 4 20 12 12 12 227 10 WT 600 3 11 3 11 3 61 2 15 12 12 14 yo 14 208 64 9 64 9 3 2 55 9 10 4 1 4 208 3 37 5 37 5 6 4 50 10 12 Va 10 NT 13 5 240 1 56 3 56 3 4 3 J9 8 10 4 4 240 3 32 5 32 5 8 5 45 12 12 8 10 NT 480 3 16 2 16 2 34 1 25 12 12 12 Var 10 WT 600 3 13 0 13 0 51 0 20 12 12 12 yo 14 208 72 1 72 1 2 9 95 6 8 3 4 DB 208 3 41 6 41 6 5 8 55 10 2 6 10 NT 15 240 1 62 5 62 5 3 8 80 8 10 4 1 4 240 3 36 1 36 1 7 7 50 10 12 Va 10 NT 480 3 18 0 18
15. OPERATING AND MAINTENANCE MANUAL FOR ELECTRIC BOOSTER HEATER Phlubbelt ELECTRIC HEATER COMPANY BASE MODEL J Commercial Food Equipment Service Association North American Association of Food Equipment Manufacturers i SS AmtoQueotes ISO 9001 2000 1648 TN Ry ASSOCIATE MEMBER amp 8 Manufacturers Agents for 0 EPH the Food Service Industry LISTED ASME ANSI NSF5 CU 9 lt 2007 Edition Rev A HUBBELL ELECTRIC HEATER COMPANY 45 SEYMOUR STREET P O BOX 288 STRATFORD CT 06615 PHONE 203 378 2659 FAX 203 378 3593 INTERNET http www hubbellheaters com IMPORTANT Always reference the full model number and serial number when calling the factory WARNING CAUTION Tank is to be completely filled with water and all air is to be vented before energizing Due to the rigors of transportation all connections should be checked for tightness before heater is placed in operation Safety relief valve must be installed in tapping provided The refractory material used in heating elements may absorb some moisture during transit periods of storage or when subjected to a humid environment This moisture absorption results a cold insulation resistance of less than twenty 20 megohms If this heater has been subjected to the above condition each heating element must be checked for insulation resistance before energizing Co
16. PT thread 1 2 copper female adatper 3 4 x3 A x1 2 3 4 copper pipe copper tee 1 2 copper female adatper Temperature sensing elemeni 3 4 x1 2 x3 4 copper tee 2075 copper pipe 3 4 copper pipe 3 4 copper pipe Temperature sensing element FILLING THE HEATER 1 Open the valve to the cold water inlet and allow the heater and piping system to completely fill as indicated by a steady flow of water through the dishwasher rinse nozzles NOTE Flush the tank at full flow for 10 minutes prior to putting into service ELECTRICAL INSTALLATION 1 Enter the base through the factory punched KO s with properly sized feeder leads See Wiring Chart Single phase installations require two 2 leads All 3 phase heaters are intended for use with a 3 wire delta system plus ground No neutral is required For a 4 wire plus ground system install 3 legs of power plus the ground and terminate the neutral leg 2 Install these power leads into the box lugs on the power distribution block or magnetic contactor as required 3 All other electrical connections are made at the factory therefore no other electrical connections are necessary 4 Connect incoming ground wire to ground lug supplied 5 Check all connections including factory connections for tightness OPTIONAL XB1 LOW TEMPERATURE INTERLOCK 1 Ifdesired the can be used an alarm relay or a temperature interlock at a setpoint other than the water temperat
17. ailable in stainless steel die cast nickel plated and floor mount stainless steel All optional legs are adjustable height type S S Floor Mount Nickel Plated Stainless Steel Security Package For prison and other secure facilities a tamper resistant package 1 available All external screws are spader type requiring a spader wrench for removal Alternate Voltage Other voltages are available including 380V 440V and 415V Consult the factory for details Water Treatment System The optional water treatment system provides superior mineral scale prevention and corrosion control by feeding a special blend of scale control compounds into the warm water stream before the booster The in line system includes a clear cartridge housing to allow an operator to view the cartridge and determine when it needs replacement without the need to open the system XB1 Low Temperature Interlock An optional in line control board with separate manual setpoint range 165 F 194 F monitors the temperature of the water through the P65 probe and will trip a SPDT relay for customers remote applications Remote Alarm Plug Adapter An optional plug adapter is available to provide a remote fault alarm signal through the J4 connector on the control board See page 11 for installation details w SECTION INSTALLATION AND START UP WARNING CAUTION DO NOT TURN ON THE ELECTRIC POWER SUPPLY to this equipment until heater is completel
18. ber s tape Teflon tape pipe dope when installing the probe Tape will prevent the low water detection system from operating properly and will cause false low water errors Lubricate O ring prior to installation Tighten probe at the brass hex flats only Use a 13 16 open ended socket or spark plug wrench Do not apply pressure twist or turn the black wire or the stainless steel jam nut as this will damage the probe 22 TROUBLESHOOTING FLOW CHARTS No Hot Water Is the No See No Display display on flowchart Yes Continuous Low Water Temperature See Error Message section of this manual Verify setpoint Check for loose wires and tighten as necessary Verify water inlet pressure and temperature No Verifythat all wires Magnetic are installed and in 208 240V contactor pull No correct positions at contactor Yes gt Replace contactor in see wiring coil Yes diagrams No Y No Verify T1000 Y configuration Yes settings Replace Correct fault control board if needed condition Vas No Correct amps No_ Replace faulty OK No Contact factory at elements element Unit properly sized A Yes Y No Plug probe end into RJ45 pigtail Y not supplied Check ohms across terminals 1 and 4 Do ohms Repla
19. ce with see diagrams 1 amp 2 Compare match Yes correctly sized unit this with the ohms the thermistor should supply for the actual temperature in the tank No No Diagram 1 Thermistor Resistance vs Temperature error 3 Replace probe OK 70 F 118830 100 F 58280 110 F 46640 120 F 3758Q 130 F 30480 140 F 24880 150 F 20430 160 F 16870 170 14000 180 F 11690 190 F 9800 Probe End RJ45 Pigtail To verify that there is water in the tank check for continuity between yellow 2 and ground 23 Are configuration settings set properly Continuous Do Correct over temperature contactors pull out temperature Yes gh per Section Para condition at setpoint 7 setpoint 4 Yes Is there zero amp draw when the contactors drop out at No setpoint Properly set Yes temperature Diagram 3 setpoint White 1 O 1 NO Black 4O 2 1 Y Boe O 3 208 240V across Yellow 4 terminals of J5 on the Contact factory control board as shown No Replace contactor J5 i For 1 contactor check voltage across 1 amp 4 For 2 contactor check voltage across 1 8 3 and 1 amp 4 Plug probe end into RJ45 pigtail not supplied Check ohms across terminals 1and 4 see diagrams 1 amp
20. ction The circuit breaker can be reset in the event of a current overload OUTER SHELL INSULATION AND SUPPORTS The tank is encapsulated in high efficiency polyurethane foam insulation meeting the requirements for UL 94 1 rating The protective shell is constructed of type 304 brushed stainless steel NSF approved adjustable plastic legs are provided for support DIAL TEMPERATURE AND PRESSURE GAUGE A combination temperature 30 240 0 120 C and pressure 0 200 psi 0 1400 kPa gauge with 3 inch dial 1s supplied with the unit for in line installation shipped loose The connection is NPT with a 2 long sensing probe PRESSURE REDUCING VALVE A bronze pressure reducing valve with built in bypass is supplied with the unit This valve is shipped separately for in line installation The 94 NPT valve is adjustable from 25 psi to 75 psi The inlet connection 1s supplied with 5 union by sweat connection The outlet connection is 74 female NPT OPTIONAL EQUIPMENT Slide Brackets Available for the Jo Model only these brackets allow for mounting the booster heater under a counter See slide bracket diagram on page 8 for details Shock Absorber The optional shock absorber can be installed between the booster and the dishwasher to reduce the harmful pressures resulting from quick closing dishwasher solenoid valves Legs In lieu of the standard black plastic legs optional adjustable legs are av
21. d at 125 2 Internal wire sizing is based on using 200 C SEW 2 or PTFE wiring in a raceway with an ambient temperature up to 60 C 3 For information on 380V 415V or 440V models reference the supplied drawing or contact the factory 4 Normal phase to phase resistance tolerance is 5 5 480 volt and 600 volt phase to phase resistance values are shown with the transformer disconnected 6 For 575V models multiply the kW rating of 600V model by a de rating factor of 0 92 to get the actual rating for 575V 7 For models manufactured prior to June 24 2005 that utilize wiring diagrams 3 5 6 7 NT 7 or 11 please contact the factory for wiring diagrams 14 1 WT Control Low Water amp Hi Limit Probe Leak Detection Probe Control Module amp Display Control Low Water amp Hi Limit Probe Leak Detection A Probe 15 Control Module amp Display Control Module amp Display Control Low Water amp Hi Limit Probe Leak Detection Probe Control Module amp Display Control Low Water amp Hi Limit Probe Leak Detection A Probe J2 Control i Module amp Display Control Low Water amp Hi Limit Probe Leak Detection Probe Control Module amp Display L sates 9 J7o i p lt 5 2 B Control Low Leak Water amp Hi Limit Detection Probe Probe 12 WT 112 13 1
22. de within the applicable warranty period referred to above Without limiting the generality of the foregoing all warranty items shall be returned by Buyer at its sole expense to the nearest Hubbell authorized service agency or to the Hubbell factory 45 Seymour Street Stratford CT 06615 for replacement or repair Hubbell reserves the right to accept or reject any such claim in whole or in part Hubbell will not accept the return of any product without prior written approval from Hubbell and all such approved returns shall be made at Buyer s sole expense HUBBELL WILL NOT BE LIABLE UNDER ANY CIRCUMSTANCES FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES INCLUDING BUT NOT LIMITED TO LABOR COSTS OR LOST PROFITS RESULTING FROM THE USE OR INABILITY TO USE THE PRODUCTS OR FROM THE USE OF OR INABILITY TO USE THE PRODUCTS OR FROM THE PRODUCTS BEING INCORPORATED IN OR BECOMING A COMPONENT OF ANY OTHER PRODUCT OR GOODS 3l
23. e e To leave the configuration menu wait 5 seconds without pushing any buttons or press the UP and DOWN buttons simultaneously 5 To reset any high limit no probe or low water when in manual reset mode fault condition press the RESET button 6 Display a By default the display will show the setpoint of the booster heater b The decimal points on the display as shown below indicate that the controller 1s calling for a contactor to pull in Setpoint 2nd Contactor if supplied 1st Contactor QUARTERLY INSPECTION 1 Monitor water temperature a Let water heater completely heat to a designated temperature setting b After controller satisfies that is when the magnetic contactor actually clicks off draw water from heater outlet and measure the temperature as close as possible to the heater c Compare the water temperature of outlet water to the temperature setting of the display when it satisfies Normal variation between the two points 15 approximately 5 F d If these two readings do not coincide within acceptable tolerances and verification has been made of the accuracy of the temperature reading gauge replace the control board and or the sensor probe 2 Lift test lever on relief valve and let water run through valve for a period of approximately 10 seconds This will help flush away any sediment that might build up In water passageways 3 Inspect element for leakage as follows 20 ao Shut
24. e costs and will reduce product longevity Chlorides must not exceed 50 parts per million ppm Excessive chlorides will result In metallic corrosion and will reduce product longevity Water treatment has been shown to reduce costs associated with de liming the booster as well as reducing metallic corrosion Product failure caused by these conditions 18 not covered under warranty See warranty for complete details This water heater 18 not intended for space heating applications The water heater is factory set at 185 F for booster water heating applications This results in the possibility of a scalding water injury A full thickness skin burn can occur in less than one second of exposure to water at this temperature TABLE OF CONTENTS SECTION TITLE PAGE I GENERAL DESCRIPTION AND CONSTRUCTION 4 II INSTALLATION AND START UP 8 SCHEDULED MAINTENANCE AND OPERATION 19 IV TROUBLESHOOTING 21 V SERVICING amp REPLACEMENT OF PARTS 26 VI SERVICE PARTS LIST 29 VII TORQUE VALUES 30 VIII WARRANTY INFORMATION 31 SECTION I GENERAL DESCRIPTION AND CONSTRUCTION GENERAL DESCRIPTION This book describes a packaged electric booster heater that is typically used to provide 180 F sanitizing rinse water The complete assembly consists of the storage tank immersion electric heating element s electronic control module safety relief valve magnetic contactor s and any other required electrical operating control Optional equipment may be sup
25. ee drawing for locations and sizes HEATING ELEMENT The water heater is supplied with an electric immersion heating element assembly s composed of copper sheathed elements that are fitted into a brass 1 12 screw plug with 1 7 8 hex Each assembly 18 threaded into the tank and sealed with an o ring gasket See drawing for voltage and power ratings MAGNETIC CONTACTOR The definite purpose magnetic contactor s 1s a heavy duty resistive load type The contactor supplies power to the heating element s based on the resistive load non inductive of the heater only when the relay on the control board is closed thereby pulling in the contacts until the desired temperature is reached At this point the contacts will drop out which in turn disconnects power from the elements Units with two contactors will turn on and off In stages CONTROL BOARD AND DISPLAY The control board supplies all the necessary function for heater operation These include control temperature hi limit cut out low water detection and leak detection LOW VOLTAGE CONTROL TRANSFORMER A control circuit transformer is supplied with all models rated greater than 240 volts This component is used to step down the primary power supply 600 480 440 415 380 to 208 240 volts for safety when working with control circuits POWER CIRCUIT BREAKERS When required by code a magnetic power circuit breaker is supplied for circuit overload prote
26. essing the RESET button on the display CAUTION Do not use plumber s tape Teflon tape pipe dope when installing the probe Tape will prevent the low water detection system from operating properly and will cause false low water errors Lubricate O ring prior to installation Tighten probe at the brass hex flats only Use a 13 16 open ended socket or spark plug wrench Do not apply pressure twist or turn the black wire or the stainless steel jam nut as this will damage the probe 28 SECTION VI SERVICE PARTS LIST Category Description tts ohms Hubbell P N Accessories Bronze Pressure Reducing COROT Plastic Legs Price each 4Reqd lt Nickel Plated Legs Price 40 Stainless steel adjustable legs Price each 50508 Floor Mount Legs S S Price each 4Reqa Temp and PressureGauge Relief Valve 427 kw S Relief Valve 30 58 751508 Side Brackets 16 models only 2perse Water Treatment System blended phosp Replacement cartridge for water treatment 5107 creabea kooo 2 Zon Boamp eom Poamp Contactors 20 Amp Resistive 15 Amp Inductive 208 240 VAC Coil ET I C25DNGIB 40 Amp Resistive 30 Amp Inductive 208 240 VAC Coil C25DNF3300 50 Amp Resistive 40 Amp Inductive 208 240 VAC Coil f C2
27. l P N PLUG ADAPTER J4 can be purchased to provide wire connections J4 Connector Common NO NC Note Rating resistive cVU T S Max Switching Power 60W 62 5VA PLUG ADAPTER J4 Max Switching Voltage 220VDC 250VAC Max Switching Current 2A Max Carrying Current 3A OPTIONAL FIELD CONVERSION FROM SINGLE TO THREE PHASE OR THREE TO SINGLE PHASE 6 7 and 9 kW models in 208 and 240 volts only 1 Find the appropriate diagram for the unit to be converted in the following chart titled Wiring Chart 2 Re wire the unit according to the diagram NOTE The wire to be used for internal wiring must conform to SEW 2 or PTFE 200 C and must match the wire size currently in use Contact the factory for assistance 1f required 3 Contact the factory for correct labels The factory will need the serial number for proper identification 11 FOR REMOTE ON OFF CONTROL To remotely control the On Off Remote Relay BY Customer 0 41 0 Wiring by Customer operation of the heater it is recommended that a DPST switch or relay by others be used to break both power legs white and black wires connected to the top two terminals of the JS connector on the control board See diagram at right Wiring from Contactor _ Power Distribution Block or Transformer eae Use a NC Normally Closed relay to turn the booster ON when energizing the relay coil or to tur
28. ments with clean water Re install element Re attach element wires Continue until all heating elements are cleaned Fill the heater following the filling instructions provided in Section II and check around the elements for leaks m Re apply power 5 Check for loose electrical connections Tighten as necessary SECTION IV TROUBLESHOOTING ERROR MESSAGES EE a 2 Ert 3 Err No Prb This message will flash when the controller does not detect that the probe is connected to the control board To clear this error reinsert the probe connector and press RESET too hot Std where is the actual temperature of the water This message will display if the temperature of the water exceed the high limit temperature setpoint To clear this error wait until the temperature is below the operating setpoint and press RESET Note that the unit will not reset until the indicated temperature is below 195 F If this message continually occurs follow the troubleshooting flow chart for continuous over temperature condition No H20 This message will display when the water level the tank has dropped below the sensor probe To clear this message refill the tank If the low water reset is set for automatic the 21 error will clear If the low water reset 1s set for manual when the tank 15 full press RESET Check the heater and the piping for leaks Check for mineral buildup on the probe and clean a
29. n the booster OFF when de energizing the relay coil Use a NO Normally Open relay to turn the booster OFF when energizing the relay Red Wire to Yellow Wire to coil or to turn the booster ON when de Contactori Contactor 4 energizing the relay coil Controller J5 Connector FINAL CHECKS 1 Check all connections for tightness 2 Ensure that all the above steps are completed 3 Remove the protective outer plastic covering from the sheetmetal shell 4 After the water is heated for the first time monitor the water temperature as described Section Quarterly Inspection 12 Wiring Chart Unit Phase Phase Min Feed Internal Element Coane Bower kW Volt Ph Amp Rin Drs Resistance Breaker or Power Wire Jumper Feed Wire Size Size Diagram Draw Ohms Fuse Size Size Wire Size 208 19 2 19 2 10 8 25 12 N A 10 ya 1 NT 4 240 1 16 7 16 7 14 4 25 12 N A 12 Vo 1 NT 480 8 3 8 3 57 6 15 12 14 Vo 1 WT 208 24 0 24 0 8 7 30 12 N A 10 027 1 NT 5 240 20 8 20 8 11 5 30 12 N A 10 Vo 1 NT 480 10 4 10 4 46 1 15 12 N A 14 Vo 1 WT 208 28 8 28 8 7 2 40 12 12 9 4 208 3 16 7 16 7 14 4 25 12 12 10 2 10 NT 6 240 1 25 0 25 0 9 6 35 12 12 8 4 240 3 14 4 14 4 19 2 20 12 12 12 10 NT 480 3 1 2 T2 76
30. ned on without first making sure that the tank is full of water and that all air has been released FREEZING The tank should be fully drained in the event the electricity has been turned off and if there 18 danger of freezing CONTROLLER OPERATION NOTE All controller variables come preset from the factory to include a preset temperature of 185 F l To turn unit on or off a Press the ON OFF button on the display module b Note that the controller will resume its last mode of operation if power is disconnected 2 change setpoint temperature the temperature is fully adjustable from 32 to 194 F 0 90 C a Press the UP and DOWN arrows simultaneously to enter setpoint change mode b Press the UP or DOWN button to change the setpoint temperature c Pressing and holding the UP or DOWN button will scroll through the setpoint temperature d To leave setpoint change mode 1 Wait 5 seconds without pushing any buttons or press the UP and DOWN buttons simultaneously 3 To view the number of operational hours the number of hours when a contactor is pulled in and software version a Press the UP and DOWN arrows simultaneously to enter setpoint change mode b Press the ON OFF button Display will flash the software version e g R14 HRS followed by the hours in thousands of hours followed by the hours i Example r14 HrS 123 456 indicates software version R1 4 and 123 456 hours d To leave operational hours mode 1 Wai
31. ntact the factory for a replacement element KEEP AWAY FROM LIVE ELECTRICAL CIRCUITS Do not perform any maintenance make any adjustments or replace any components inside the control panel with the high voltage power supply turned on Under certain circumstances dangerous potentials may exist even when the power supply is off To avoid casualties always turn the power supply safety switch to off turn the charge or ground the circuit before performing any maintenance or adjustment procedure The unit is designed to operate at pressure not more than 150 psi Generalized instructions and procedures cannot anticipate all situations For this reason only qualified installers should perform the installations A qualified installer is a person who has licensed training and a working knowledge of the applicable codes tools equipment and methods necessary for safe installation of an electric resistance water heater If questions regarding installation arise check your local plumbing and electrical inspectors for proper procedures and codes If you cannot obtain the required information contact the company Water Quality Requirements Recommended water hardness is 4 to 6 grains of hardness per gallon GPG Water hardness above 6 GPG should be treated by a water conditioner water softener or in line treatment Water hardness below 4 GPG also requires treatment to reduce potential corrosion Excessive GPG will result in higher operating and maintenanc
32. plied with your unit Please consult the product packing list for details specific to your assembly The unit is factory assembled insulated jacketed wired tested and ready for electrical and plumbing service connections CAPACITY Storage Capacity 40 Rise 70 Rise gallons ndi GPH GPH J61 6 1 10 5 161 5 6 1 3 15 J62 6 2 20 11 163 6 3 30 17 164 6 4 41 23 165 6 5 51 29 J66 6 6 62 35 J67 6 7 72 41 J69 6 9 92 53 J610 6 10 5 108 62 J612 6 12 123 70 J613 6 13 5 138 T9 J615 6 15 154 88 J618 6 18 185 105 J624 6 24 246 141 1627 6 21 2117 158 1630 6 30 308 176 1636 6 36 369 211 J639 6 39 400 228 J640 6 40 5 415 237 1645 6 45 461 264 1654 6 54 554 316 J658 6 58 5 600 343 J161 16 1 10 5 J161 5 16 1 5 15 8 J162 16 2 20 11 J163 16 3 30 17 J164 16 4 41 23 J165 16 5 51 29 J166 16 6 62 35 J167 16 1 72 41 J169 16 9 92 53 J1610 16 10 5 108 62 J1612 16 12 123 70 J1613 16 13 5 138 79 J1615 16 15 154 88 J1618 16 18 185 105 J1624 16 24 246 141 J1627 16 27 217 158 11630 16 30 308 176 11636 16 36 369 211 11639 16 39 400 228 11640 16 40 5 415 237 J1645 16 45 461 264 J1654 16 54 554 316 J1658 16 58 5 600 343 4 TO 18 KW DIMENSIONS 6 1 2 25 APPROX OUTLET ET 3 4 NPT NIPPLE INLET 3 4 NPT NIPPLE 1 1 2 Shipping Weight 95 Ibs 2 1 2
33. release lever on relief valve to let air into system or break union on outgoing water line Drain water from tank Disconnect overflow piping Unscrew relief valve remove assembly and replace with new one Connect overflow piping Turn on incoming water supply and check for leaks 0 Connect power to unit 21 SENSOR PROBE Disconnect power from unit Shut off incoming water supply Attach hose to drain connection Lift manual release lever on relief valve to let air into system or break union on outgoing water line Drain water from tank Disconnect probe wire from control board See picture ue SOME gt SN en Mui d 4 aag T Probe connection J3 gt erat mi D H 5 7 Remove probe from tank using a 13 16 slotted socket or 13 16 spark plug wrench to accommodate the probe cable NOTE Care should be taken not to pull or put excessive force on the cable to probe connection 8 Install new 115 Buna N o ring gasket and install new probe NOTE Hubbell recommends lubricating the o ring with Parker O Lube prior to installation WARNING Do not remove the jam nut To replace the probe remove the entire probe assembly from the tank Probe 9 Reconnect probe wire to control board 10 Refill tank 11 Check for leaks Retighten as required 12 Note that to resume operation the controller will need to be reset by pr
34. riate connections as shown refer to the specifications for location and sizes IMPORTANT Be certain to connect the outlet piping to the final rinse and not to the wash tank IMPORTANT applies to J6 Models only Do not turn the entering warm water or exiting hot water nipples from their factory installed positions The internal diffusers are aligned at the factory and turning the nipple will change the diffuser position and affect performance Hubbell recommends that the inlet and outlet pipes are insulated to prevent excessive heat loss IMPORTANT applies to 76 Models only Do not apply heat directly to the entering warm water exiting hot water nipples If sweat connections are to be used sweat tubing to the adapter before threading the adapter to the nipple on the heater Any heat applied to the heater nipple will damage the internal plastic diffuser and affect performance Install water pressure regulator and adjust to the pressure recommended by the dishwasher manufacturer WHEN A STANDARD PRESSURE REGULATOR IS USED other than that purchased with the booster it acts as a check valve and it is possible that thermal expansion will cause the relief valve to drip or occasionally blow off a small amount of water To overcome this condition it is recommended that a 3 8 by pass arrangement with a horizontal check valve be installed around the pressure regulator This will prevent annoyance caused by the relief valve dripping or blowing
35. s required Check for continuity between the yellow wire and ground See diagram 2 on the following page 4 Err H20 LEA This message displays if the leak detection sensor determines there is water in the base of the heater shell To clear this message remove the water from the leak detection sensor Check the unit and piping for leaks J EE This message displays if the display cable is installed into the control board backwards To clear this message remove and correctly install the display cable 6 255 This message indicates that the probe is likely out of calibration To clear this message it is recommended that the probe be removed and replaced CONTACTOR CARE 1 chattering or humming from the contactor is due to dust or debris on the contact points that prevents the contactor from making proper contact The debris can be removed by utilizing a can of antistatic cleaning and dusting spray pressurized air and spraying through the side of the contactor to remove the debris MISCELLANEOUS 1 Ifthe display flashes when the unit is first turned or turned on after maintenance check that the J5 terminal on the controller is engaging all four pins on the board 2 Note that before replacing the control board display or probe it is recommended that the power supply to the booster heater be turned off at the main circuit breaker disconnect to the booster heater to reset and clear the electronic controller CAUTION Do not use plum
36. t 5 seconds without pushing any buttons or press the UP and DOWN buttons simultaneously 4 Configuration Menu NOTE Configuration menu change should only be made by qualified personnel a To enter the configuration menu press and hold the UP DOWN and ON OFF buttons simultaneously for 5 seconds To scroll through menu settings press the ON OFF button To make a change to a menu setting use either the UP or DOWN arrow d Settings i Relays sets the number of magnetic contactors used in the heater 1 r amp amp where is the number of magnetic contactors 01 or 02 19 Low water detection sets the low water detection on or off 1 LOn for low water on Factory Default 2 LOF for low water off ii Low water reset sets the low water reset for either automatic or manual l LAU for low water automatic reset Factory Default 2 LAn for low water manual reset iv Temperature units sets the temperature units to either degrees Fahrenheit or Celsius l DEF for degrees Fahrenheit Factory Default 2 DEC for degrees Celsius v Differential sets the number of degrees below setpoint that the heater will resume heating after it has achieved setpoint l d where 1s the differential in degrees 1 to 20 Factory set at 02 vi Display sets the display to either setpoint or actual temperature 1 955 for display setpoint temperature Factory Default 2 dSt for display actual temperatur
37. ure setpoint on the booster heater 2 Ifthe is not factory installed mount the to the control panel plug the P65 probe into the and plug XB1 into the T1000 control board 3 set the XB1 setpoint turn the potentiometer clockwise for a higher setpoint and counter clockwise for a lower setpoint The range is adjustable between 150 F and 180 F 10 4 Make connections as required to the relay terminal block When the temperature drops below the XB setpoint the relay is open between Normally Open NO and Common C and the LED will flash green When the temperature is above the XB1 setpoint the relay is closed between NO and C and the LED will be solid green Use NO and C for low temperature interlock or high temperature alarm Use Normally Closed NC and C for low temperature alarm A red LED indicates an error Relay Terminal Block d i MS ECTS E m LED 162409 XW LASS VAN f TD Note Rating resistive Max 5A 4 120 5 24VDC Temperature Adjustment Potentiometer OPTIONAL REMOTE ALARM CONTACTS 1 If desired the control board can be wired to a remote alarm to indicate a reset fault condition These fault conditions include over temperature no probe and low water when the configuration is set to manual reset 2 This alarm can be wired to the J4 connector on the control board as shown below To facilitate this installation an optional adapter Hubbel
38. with Parker O Lube prior to installation 9 Rewire element according to the wiring diagram as shown the Section II Disconnect power from unit Disconnect line and load wires to contactor Disconnect the control circuit wires Control Wires Line Wires Load Wires Loosen holding screws and remove contactor Mounting Screws Replace with new contactor using reverse procedure CONTROL BOARD 1 Disconnect power from unit 2 Disconnect display cable probe cable J3 leak detection wire J2 ground wire J7 and terminal DS 6 block 75 from the control board NOTE The terminal block 75 18 removable from the control board Grasp the terminal block on the ends and pull straight away from the board Ground Wire J7 Display Cable Leak Detection Wire J2 Probe Cable J3 T9 f Aq 09 e gt pe we wow Power Wire Common White Connector J5 Power Wire Black Wire to 1 Contactor yellow Wire to 2 Contactor red Remove four 4 screws securing control board to panel Remove and replace control board Reconnect wires disconnected in step 2 NOTE When reconnecting the ribbon cable be sure to have the key on the cable align with the slot in the connector Connect power to unit RELIEF VALVE 1 2 3 4 5 6 7 8 9 1 Disconnect power from unit Shut off incoming water supply Attach hose to drain connection Lift manual
39. y filled with water and all air has been released Jf the heater is NOT filled with water when the power is turned on the heating elements will burn out For protection against excessive pressures and temperatures local codes require the installation of a temperature and pressure T amp P relief valve certified by a nationally recognized laboratory that maintains periodic inspection of production of listed equipment of materials as meeting the requirements for Relief Valves and Automatic Gas Shutoff for Hot Water Supply Systems ANSI Z21 22 1971 THE CUSTOMER IS RESPONSIBLE TO PROTECT PROPERTY AND PERSONNEL FROM HARM WHEN THE VALVE FUNCTIONS All water heaters have a risk of leakage at some unpredictable time IT IS THE CUSTOMER S RESPONSIBILITY TO PROVIDE A CATCH PAN OR OTHER ADEQUATE MEANS SO THAT THE RESULTANT FLOW OF WATER WILL NOT DAMAGE FURNISHINGS OR PROPERTY Installation or service of this unit requires ability equal to that of a licensed tradesman in the field The installation must conform to these instructions and any local authority having jurisdiction Grounding and electrical wiring connected to the unit must also conform to the latest version of the National Electric Code NFPA 70 WATER HEATER PLACEMENT NOTE For most effective operation install the booster heater as close as possible to the dishwasher If the distance between the booster and the dishwasher exceeds NSF requirements recirculation methods must be employed
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