Lattner Boiler Company HW Installation Maintenance And Service Manual

Text of Lattner Boiler Company HW User Guide:

• Lattner Boiler Company HW, INSTALLATION, MAINTENANCE, AND SERVICE MANUAL ELECTRIC HOT WATER BOILERS (LW, HW) INDEX General Information Page 1 Installation Page 2 Typical Piping Diagram Page 2 Operation & Controls Page 3 Construction Page 3 Start Up Page 4 Maintenance Page 4 Element Replacement Page 5 Troubleshooting Literature Index Page 6 Page 7 GENERAL INFORMATION Vessel Construction – All vessels registered with the National Board of Boiler and Pressure Vessel Inspectors; Data reports are furnished. Comply with Section IV, ASME Code, stamped with “H”. Maximum design temperature and pressure is 2

• INSTALLATION 1. Before installing unit, refer to job plans and specifications for complete description of service and accessories to be included. 2. If unit is not to be placed in immediate service, protect from job site dust and debris with drop cloth or other means. Do not cover ventilation louvers while unit is in operation. 3. Unit should be installed in acco

• Lattner Boiler Company HW, OPERATION & CONTROLS Controls – All basic controls and terminals are located in an integral ventilated control cabinet, factory wired and functionally tested. Controls include fuses with 200,000 ampere interrupting capacity, magnetic contactors UL listed for 100,000 cycles, 120 volt control transformer with primary and secondary fuses, step controller which recycles to zero on power failure, pilot light for each heating step, control circuit toggle switch. Note: On units with 4 steps or less, a multistage

• Lattner Boiler Company HW, START UP 1. Check proper installation and settings of safety valve, high limit cutout(s), low water cut-off and all other control and safety devices. Adjust water temperature set point on controller to desired value (less than 240 degrees F). If provided, adjust automatic cutout for temperature setting approximately 10 degrees F above set point of controller. Manual reset cutout should be set approximately 10 degrees above automatic reset controller, subject to maximum setting above. 2. Inspect all controls, wiring, and terminals for possible damag

• Lattner Boiler Company HW, HEATING ELEMENT BLADE REPLACEMENT 1. Lock out and tag out all power sources supplying power to the boiler. Double check with voltmeter to verify there is no voltage present at the boiler. 2. Remove the boiler jacket panel from the element connection side of the boiler. 3. Make a diagram or sketch of all element jumper wires and connections. It is not necessary to remove the jumper wires from the blades that are not being replaced. 4. Number all leads removed from the element so they can be correctly connected after completi

• Lattner Boiler Company HW, SERVICE INSTRUCTIONS Disconnect all sources of power before servicing unit. If it is necessary to replace a factory installed part, be sure to use Lattner replacement part. Replacement parts are available through authorized Lattner representatives or directly from the factory. When ordering replacement parts, always include the model and serial numbers. TROUBLESHOOTING Problem Possible Cause 1. Unit does not operate Disconnect or control circuit switched off, low water condition, high temperature condition, improper setting of operating control. Depress reset buttons on low water and high limits. 2. Water temperature too low O

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