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  5. Installation And Operaion Manual

A.O. Smith DSE-5 Installation And Operaion Manual

Manual is about: Dura-Power Electric Models Comercial Water Heater

Summary of DSE-5

  • Page 1

    1 • installation • operation • maintenance • checklist • limited warranty caution text printed or outlined in red contains information relative to your safety. Please read thoroughly before installing and using this appliance. Keep this manual with the heater for future reference. Whenever maintenan...

  • Page 2: Recovery Capacity

    2 standard btu/ 30° 40° 50° 60° 70° 80° 90° 100° 110° 120° 130° 140° kw input hour 3 10,239 41 31 24 20 17 15 13 12 11 10 10 9 6 20,478 82 62 49 41 35 31 27 25 22 21 19 18 9 30,717 123 92 74 62 53 46 41 37 34 31 28 26 12 40,956 164 123 98 82 70 61 55 49 45 41 38 35 15 51,195 205 154 123 102 88 77 68...

  • Page 3: Contents

    3 contents page rough-in-dimensions ...................................... 2 recovery capacity ....................................... 2 foreword ......................................................... 3 approvals ....................................................... 3 model & rating plate ........

  • Page 4

    4 getting to know your water heater below is an illustration of the water heater with its features called out. The text of this manual will refer to the items shown. Figure 1.

  • Page 5: General Safety

    5 general safety information insulation blankets insulation blankets available to the general public for external use on electric water heaters are not approved for use on your a.O. Smith water heater. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage t...

  • Page 6

    6 relief devices an unplugged 3/4” relief valve opening is provided for installing temperature and pressure relief valve. Caution: to reduce the risk of excessive pressures and temperature in this water heater install temperature and pressure protective equipment required by local codes but not less...

  • Page 7: Piping Diagram

    7 piping diagram one or two temperature - one heater one or two temperature - two heater danger : temperature setting should not exceed safe use temperature at fixtures. See water temperature control warning on pages 17 & 18. If higher preheat temperatures are necessary to obtain adequate booster ou...

  • Page 8

    8 one or two temperature - three heaters one or two temperature - four heaters caution: if building cold water supply has a back-flow preventer, check valve or water meter with check valve, provisions for thermal expansion of water in the hot water system must be provided. *pipe to open drain. Insta...

  • Page 9

    9 medium temperature - one heater vertical storage tank medium temperature - one heater horizontal storage tank *pipe relief valve to open drain. †tank temperature control set at desired temperature (max. 170°). Heater thermostat set at least 5° higher. Install in accordance with all local codes. Ca...

  • Page 10

    10 medium temperature - two heaters horizontal storage tank medium temperature - two heaters vertical storage tank return line from fixture circulating loop (if used) should connect to any opening near bottom of tank. * pipe relief valve to open drain. † tank temperature control set at desired tempe...

  • Page 11

    11 medium temperature - three heaters horizontal storage tank medium temperature - three heaters vertical storage tank * pipe relief valve to open drain † tank temperature control set at desired temperature (max. 170°). Heater thermostat set at least 5° higher. Caution: if building cold water supply...

  • Page 12

    12 medium temperature - four heaters horizontal storage tank medium temperature - four heaters vertical storage tank caution: if building cold water supply has a back-flow preventer, check valve or water meter with check valve, provisions for thermal expansion of water in the hot water system must b...

  • Page 13: Electrical

    13 electrical general the installation must conform to these instructions, the local code authority having jurisdiction, and the requirements of the power company. In the absence of code requirements follow the latest version of nfpa-70, the national electrical code which may be ordered from: americ...

  • Page 14

    14 amperage table/overcurrent protection this table provides the total connected heating element load in amperes for branch circuit conductor and over current protection sizing. Single-phase heaters are two wire circuits. Three-phase heaters are three wire circuits. In addition to the foregoing a gr...

  • Page 15

    15 small commercial wire diagram 208-240v / 3ph small commercial wire diagram 208-240v / 3-1ph.

  • Page 16

    16 3-1 phase conversions in the case where the unit is phase convertible and it has only one contactor, jumper wires (provided) must be added according to the phase of the supply voltage. See the diagram below. For single-phase connection, jumpers a-c and b-d must be added. For three-phase connectio...

  • Page 17

    17 small commercial wire diagram single phase small commercial wire diagram 300-600v / 3ph.

  • Page 18: Operation

    18 operation general never operate the heating elements without being certain the water heater is filled with water, and a temperature and pressure relief valve is installed in the relief valve opening. Filling 1. Turn off the electrical disconnect switch. 2. Close the water heater drain valve by tu...

  • Page 19: Maintenance

    19 maintenance always close the front access door after making a temperature adjustment. Turn on electricity. Draining the water heater must be drained if it is to be shut down and exposed to freezing temperatures. Maintenance and service procedures may also require draining the heater. 1. Turn off ...

  • Page 20

    20 5. Remove the bolts from each element. 6. Remove the elements from the openings. • use a twisting, pulling action to remove elements scaled beyond size of the tank openings. • brush loose scale from elements. 7. Lime scale removal. • place limed ends of heating elements into un•lime delimer and a...

  • Page 21

    21 when such a condition is encountered, local codes or inspection agency should be consulted to determine which system is acceptable in your area. These may consist of: • installation of a second relief valve set to lower than the primary safety relief valve. • an expansion tank of suitable pressur...

  • Page 22: Leakage Checkpoints

    22 leakage checkpoints instructions: use this illustration as a guide when checking for sources of water leakage. You or your dealer may be able to correct what appears to be a problem. Water on side of the tank may be condensation due to the panel or insulation not being in place. Relief valve oper...

  • Page 23

    23 model dse limited warranty a.O. Smith corporation, the warrantor, extends the following limited warranty to the owner of this water heater: 1. The tank if the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable w...

  • Page 24

    24 5621 w. 115th street, alsip, il 60803 phone: 800-433-2545 fax: 800-433-2515 www.Hotwater.Com e-mail: parts@hotwater.Com replacement parts.