Over-the-Side Immersion Heaters

General Purpose Over-the-Side Immersion Heaters, Vertical Loop Low-Profile Immersion Heaters, Sanitzing Sink Immersion Heaters and Deep Tank/Sump Immersion Heaters are manufactured with Incoloy®, Stainless Steel, Steel or Copper heating elements and NEMA 4 Terminal Housings. Additional construction details include:

power leads for the elements travel up through a riser pipe and are connected to a terminal block inside the housing
heaters are wired for three-phase unless otherwise specified
optional thermostat

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OTS Tank Heaters (TAT)

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General Purpose Immersion Heaters

Design Features

Lightweight and Portable
Easy Installation and Removal
304 or 316 Stainless Steel construction for all wetted parts
Passivation of all wetted parts - electropolished or bright annealed surface treatments for Stainless Steel or Incoloy designs (heating elements only)
NEMA 1 or NEMA 4/7 (explosion resistant) terminal housings
Flange, fixed or adjustable bracket on riser for mounting
Mounting flange for terminal housing
External power wiring options include flexible cord/plug, armored cable, wire braided or plain lead wire
Double- or Single- pole thermostat (see catalog page 11-6 for available ranges)
Process or Hi-limit thermocouple in thermowell in place of the thermostat
Hi-limit MI thermocouple on sheath
Special riser and/or sludge leg heights
Up to 12 elements per heater assembly
Right-angle riser design

Over-the-Side Heater with dimensions

General Purpose Tank or Reservoir Water Immersion Heaters

Design Features

Immersion section of heater made of 316 Stainless Steel
Cold riser extends to the top of container where control housing is located
Cord set with 3-wire grounding plug is included for easy installation and wiring
Adjustable vapor-proof thermostat control with temperature range of 55°F to 115°F (±3°)
Hi-limit cut switch set to 125°F (±4°)
Stainless Steel mounting bracket also supplied for easy mounting
Pilot light and on-off switch provided

Tank or Reservoir Water Immersion Heater with Dimensions

Hazard of electric shock. Installation must be grounded to earth and heater connected to line input through properly sized GFCI circuit breaker.
Disconnect power to heater before servicing. There should be no body contact with the water while the heater is in the water.
Under NO circumstances should this heater be turned on unless the system is full of water.

GP tank or reservoir immersion heater wiring diagram

Vertical Loop - Low-Profile Immersion Heaters

Design Features

Used on open-top tanks for heating water, water-based solutions, citrus juices, plating tanks, oil tempering, salt baths and other mild corrosive solutions
NEMA 4 (moisture resistant) housing with integral grounding terminal is standard. Other NEMA ratings available
Low-profile design with adjustable SS mounting bracket
Optional Passivated, Electropolished, or Bright Annealed surface treatments available for Stainless Steel or Incoloy sheath designs
External power wiring options including flexible cord/plug, armor cable, braided or plain lead wire
Optional Hi-limit MI thermocouple on heater sheath

Vertical Loop Low-Profile Immersion heater with Dimensions 1

Vertical Loop Low-Profile Immersion heater with Dimensions 2

Sanitizing Sink Immersion Heaters

Design Features

Used for sterilization of water tanks in restaurants, taverns and laboratories
Double Pole 60-250°F thermostat with over-temperature cutout. Optional pilot lamp to indicate heater on/off status available
Standard 6 ft. (optional 4 ft.) cord set with grounding plug (NEMA 5-15P for 120V and 6-30P for 240V)
Adjustable Stainless Steel mounting bracket
Consult Tempco for custom designs

Sanitizing Sink Immersion Heater with Dimensions

Deep Tank/Sump Immersion Heaters

Design Features

.475 diameter Incoloy elements and stainless steel wetted parts standard
Designed for permanent installation in outdoor/indoor applications
2 ft to 12 ft vertical riser height (for thermostat designs)
Weathertight mounting hardware supplied
Riser adjustable to facilitate mounting variations
NEMA 4 Electrical Enclosure with 3/4 conduit fitting
1-1/2" Sludge legs
Double-pole 60-250°F pilot duty thermostat
Watertight thermowell sized for 3/8" max. dia. sensing bulb

Optional Features

316 SS, Steel, or Copper element designs
Passivation, electropolished, or bright annealed surface treatments for stainless steel or Incoloy designs (elements only)
Custom or ASI pressure rated flange on riser for mounting
NEMA 1 or NEMA 4/7 (explosion resistant) terminal housings
Alternate single- or double-pole thermostat (see page 11-6 through 11-9 for ranges)
Internally mounted definite purpose Magnetic Contactor, single circuit units only (see page 13-96 for volt/amp ratings and coil voltages available)
RTD or Process MI thermocouple in thermowell in place of thermostat
Hi-limit thermocouple on element sheath
Special riser or sludge leg heights
Right-angle riser design for offset terminal housing
Up to 24 elements per heater assembly
1/32 DIN temperature controller, internal or panel mounted on terminal housing and used with T/C or RTD probe & contactor for heater control
Integrated float switch for liquid level control