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Heat-Flo EC-66 - User Manual

Heat-Flo EC-66
20 pages
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LIGHT COMMERCIAL ELECTRIC WATER HEATERS
INSTRUCTION MANUAL
MODELS EC-66, EC-80, EC-119
INSTALLATION | OPERATION | SERVICE |
MAINTENANCE | LIMITED WARRANTY
Conforms to UL1453
for Electric Commercial
Water Heaters.
Certied to CAN/ CSA
STD C22.2 No. 110-94
Heat-Flo, Inc. | www.heat-o.com | Uxbridge, MA 01569
WARNING
Read and understand this instruction
manual and the safety messages herein
before installing, operating, or servicing
this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the water
heater.
WARNING
If the water heater becomes immersed
in water up to or above the level of the
bottom of the element doors, the heater
should be examined by a qualied
service agency before it is placed in
operation. See Page 2.
PLACE INSTRUCTIONS ADJACENT TO WATER HEATER & NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.

Table of Contents

Questions and Answers

  • S
    Stephanie DavisAug 9, 2025
    What to do if Heat-Flo Water Heater has no hot water?
    • P
      phillipsrobertAug 9, 2025
      If your Heat-Flo Water Heater isn't producing enough or any hot water, start by checking a few things: * Ensure the electrical disconnect switch is in the ON position. * Check the fuses. * If the water was very hot and is now cold, the high limit switch might have activated. * Consider if a large hot water demand exceeded the heater's capacity. * Keep in mind that cooler incoming water temperatures increase the heating time. Also, check for any hot water leaks.
  • B
    Bryan PageAug 25, 2025
    Why Heat-Flo Water Heater has no hot water?
    • L
      Lisa WilliamsAug 26, 2025
      If your Heat-Flo Water Heater isn't producing enough or any hot water, it might be because the electrical disconnect switch is not in the ON position, the fuses need checking, or the high limit switch may have activated. It could also be that the heater's capacity was exceeded by a large hot water demand, or cooler incoming water temperature lengthens the heating time. Look for hot water leakage. Sediment or pipe scale may be affecting water heater operation.

Heat-Flo EC-66 Specifications

General IconGeneral
CategoryWater Heater
ManufacturerHeat-Flo
ModelEC-66
TypeElectric
Capacity66 gallons
Height60 inches
Diameter22 inches
Voltage240V
Wattage4500W
Warranty6 years

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