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Servicing should only be performed by a Qualified Service Agent
3
INTRODUCTION
INSTRUCTION MANUAL
Have a copy of the Instruction Manual that came with the water heater on hand for the
correct model water heater you are working with before servicing.
Installation information given in this Service Manual IS NOT a complete installation
instruction. Installation information covered in this Service Manual has a limited focus as it
applies to servicing. This Service Manual does not replace or supersede the Instruction
Manual that came with the water heater. Always refer to the Instruction Manual that came
with the water heater for complete installation instructions.
If the Instruction Manual is not on hand copies can be obtained from the manufacturers web
site or by calling the toll free phone number shown on the back cover of this Service Manual.
TOOLS REQUIRED
• Instruction Manual that came with the water heater.
• All tools common to installation and service of commercial water heaters such as hand
tools, torch, pipe wrenches etc.
• Electrical switch lock out device - used to secure disconnect switches/breaker panels
while servicing.
• Insulated fuse puller(s).
• Adhesive numbered/colored wire markers - 3M ScotchCode SDR0-9 Numbered Wire
Markers; 3M ScotchCode STD-C Colored Wire Markers or equivalent.
• Volt-Ohm Multi Meter - recommend Fieldpiece HS36, Fluke 187, UEI model DL289 or
equivalent capable of measuring:
• AC Voltage up to 600 VAC
• DC Voltage up to 24 VDC
• Ohms up to 2,000,000 ohms
• AC amp meter - recommend UEI model DL289 or equivalent capable of measuring:
• AC amperage up to 400 amps