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INSTALLATION, MAINTENANCE,
AND SERVICE MANUAL
INDEX
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 250 degrees F and 160 psi if model "LW" boiler.
Vessels above 250 degrees F and/or above 160 psi are
designed to ASME Section I or Section VII
stamped "S" or "U"; model number designation is "HW".
Heating Elements – Removable, incoloy sheathed electric
heating elements are mounted in 150 lb. ASME blind
flanges with plated steel compression fittings. Complete
flange assembly is inserted horizontally into vessel and
bolted in place.
General Information
Installation
Typical Piping Diagram
Operation & Controls
Construction
Start Up
Maintenance
Element Replacement
Troubleshooting
Literature Index
GENERAL INFORMATION
UL Listing – Under file No. E30432 up to 600 volts.
Enclosure – Heavy gauge steel control panel and steel
vessel enclosure are attached to a steel frame, mounted on
a 4" channel base. All surfaces are protected against
corrosion with durable baked finish.
and are
Insulation – Minimum 4" fiberglass on all sides. Minimizes
heat loss from vessel and keeps enclosure temperature
cooler.
1
ELECTRIC HOT WATER BOILERS
(LW, HW)
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Summary of Contents for Lattner Boiler Company HW
- Page 1 ASME Section I or Section VII and are Insulation – Minimum 4” fiberglass on all sides. Minimizes stamped “S” or “U”; model number designation is “HW”. heat loss from vessel and keeps enclosure temperature Heating Elements – Removable, incoloy sheathed electric cooler.
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Page 2: Installation
INSTALLATION 1. Before installing unit, refer plans 5. Required access (see certified print exact specifications for complete description of service and dimensions): accessories to be included. Front – 36” minimum 2. If unit is not to be placed in immediate service, protect Rear –... -
Page 3: Operation And Controls
OPERATION & CONTROLS Controls – All basic controls and terminals are located in Gauges – Pressure and temperature gauges are mounted an integral ventilated control cabinet, factory wired and on control cabinet front panel. Gauges indicate working functionally tested. Controls include fuses with 200,000 pressure and temperature of the boiler. -
Page 4: Maintenance
START UP 1. Check proper installation and settings of safety valve, 6. As boiler fills check all piping and connections for high limit cutout(s), low water cut-off and all other leaks. necessary, correct immediately before control and safety devices. Adjust water temperature proceeding. - Page 5 HEATING ELEMENT BLADE REPLACEMENT 1. Lock out and tag out all power sources supplying power 12. Install the new element blade through the separator to the boiler. Double check with voltmeter to verify there plates and element flange. The sheath of the element is no voltage present at the boiler.
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Page 6: Troubleshooting
5. Excess pressure causing relief System head pressure exceeds relief valve setting or expansion valve to open tank water logged. Lattner Boiler Company 1411 9 St. SW Cedar Rapids, IA 52404 Telephone: (800) 345-1527 Fax: (319) 366-0770 Web: www.lattner.com...