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Commercial Electric Water Heater Use and Care Guide • 9

Approvals

All models are listed by Underwriters Laboratories Inc.

Model and Rating

DELC-30/40/50, DENC-30/40 & DEJC-50/66

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Содержание DEJC-50

Страница 1: ...T Read this manual and the labels on the water heater before you install operate or service it If you have difficulty following the directions or aren t sure you can safely and properly do any of this...

Страница 2: ...ermostat access Lower Element and Thermostat access T P relief valve Water shut off Electrical junction box Expansion tank Drain pan discharge pipe Drain pan Drain valve T P discharge pipe Cold water...

Страница 3: ...ANGER indicates hazardous situation that if not avoided will result in death or serious injury WARNING WARNING indicates a hazardous situation that if not avoided could result in death or serious inju...

Страница 4: ...lly mix hot and cold water to limit the temperature at the tap Mixing valves are available from your local plumbing supplier Follow manufacturer s instructions for installation and adjustment of the v...

Страница 5: ...s from plumbing or leaks from the water heater itself can damage property and could cause a fire risk If the water heater is subjected to flood conditions or the thermostat s have been submerged in wa...

Страница 6: ...1 46 41 36 34 30 29 9 LPH 384 345 256 230 192 173 153 138 128 115 110 5000 5000 GPH 113 101 75 68 56 51 45 41 38 34 32 10 LPH 426 384 284 256 213 192 170 153 142 128 122 5500 5500 GPH 126 113 84 75 63...

Страница 7: ...3 Before you start be sure you have and know how to use the following tools and supplies Plumbing tools and supplies appropriate for the type of water pipes in the plumbing system Threaded connectors...

Страница 8: ...ALCULATING AMPERAGE OVERCURRENT PROTECTION The dual element heater is factory wired for connection to a three wire three phase delta branch circuit non simultaneous operation In addition a ground cond...

Страница 9: ...Commercial Electric Water Heater Use and Care Guide 9 Approvals All models are listed by Underwriters Laboratories Inc Model and Rating DELC 30 40 50 DENC 30 40 DEJC 50 66 GETTING STARTED...

Страница 10: ...10 Commercial Electric Water Heater Use and Care Guide Thermostat Wiring Diagram A 8 CIRCUIT FOR DUAL ELEMENT HEATER GETTING STARTED GETTING STARTED...

Страница 11: ...ater supply line and adjust the water pressure control to between 50 60 psi 345 414 kPa If the property does not have a Pressure Reducing Valve install a PRV on the main water supply line and set it t...

Страница 12: ...d can shut off the water heater s water supply if a leak occurs Figure 6 A suitable drain pan piped to an adequate drain can help protect flooring from leaks and drips Install a suitable drain pan ava...

Страница 13: ...spect the drain pan pipes and surrounding area regularly and fix any leaks found Drain pans are available at local plumbing supplier Leaks are frequently in the plumbing system itself and not the wate...

Страница 14: ...heater 1 Completely read all instructions before beginning If you are not sure if you can complete the installation seek assistance from any of the following sources Schedule an appointment with a qua...

Страница 15: ...stall it to allow complete drainage of both the T P Relief Valve and the discharge pipe The discharge pipe must withstand 250 F 121 C without distortion Use only PEX copper or CPVC pipe Do not use any...

Страница 16: ...ed polyethylene PEX Use fittings appropriate for the type of pipe in the plumbing system Do not use iron or PVC pipe they are not suitable for potable water 2 Connect the cold water supply using 3 4 i...

Страница 17: ...Expansion Tank Figure 15 A Pressure Reducing Valve is required if the plumbing system s water pressure is above 80 psi 552 kPa Figure 16 The Thermal Expansion Tank should be pressurized with air to ma...

Страница 18: ...o access the electrical junction box Figure 18 The water heater s electrical requirements can be determined from the data plate 5 Install wiring in an approved conduit if required by local codes Use a...

Страница 19: ...h from electrical shock Check wires with a circuit tester to make sure power is off Open the electrical junction box and remove the lower thermostat access panel Do not remove the plastic personnel pr...

Страница 20: ...temperature setting when you return CAUTION Hydrogen gas builds up in a hot water system when it is not used for a long period two weeks or more Hydrogen gas is extremely flammable If the hot water s...

Страница 21: ...uit tester Turn the power off and close the electrical junction box If the water heater is not getting power contact a qualified person to have the wiring or circuit breakers checked 2 Check the upper...

Страница 22: ...nections or melted dip tube usually found soon after new installation Plumbing leak Bad lower heating element or lower thermostat Low supply voltage Thermostatic Mixing Valves If the hot water is simp...

Страница 23: ...be due to the tank overheating WARNING Do not cap or plug the T P relief valve or discharge pipe and do not operate the water heater without a functioning T P Relief Valve this could cause an explosi...

Страница 24: ...cool Figure 25 Water Faucet WARNING Be sure the water runs cool before draining the tank to reduce the risk of scalding 3 Connect a garden hose to the drain valve and place the other end of the hose...

Страница 25: ...or thermostat yourself have this work done by a qualified person To replace the heating element you ll need the following tools and supplies Figure 28 Non Contact Circuit Tester Always turn power OFF...

Страница 26: ...remove the element Inspect the gasket for damage If the gasket is damaged replace the gasket and re install the element 12 Once the element is successfully installed and there are no leaks replace the...

Страница 27: ...f Valve yellow label attached to T P Relief Valve Minerals in the water can form deposits that cause the valve to stick or create blocked passages making the T P Relief Valve inoperative Follow these...

Страница 28: ...odel and serial number 2 Item number and part description Key No Part Description 1A ANODE ALUMINUM 1B ANODE MAGNESIUM SMR P72 AND S19 2 T P RELIEF VALVE 3 ELEMENT GASKET 4 ELEMENT 5 UPPER THERMOSTAT...

Страница 29: ...expired portion of the warranty WHAT S NOT COVERED Problems caused by improper gas supply line sizing gas type venting connections combustion air voltage wiring or fusing Failure to follow applicable...

Страница 30: ...30 Commercial Electric Water Heater Use and Care Guide NOTES NOTES...

Страница 31: ...Commercial Electric Water Heater Use and Care Guide 31 NOTES NOTES...

Страница 32: ...Copyright 2021 A O Smith All Rights Reserved...

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