Lochinvar SDT065 User Manual

Stainless Steel Indirect Water Heaters

12 Squire Models to Choose From

- 6 Standard Models from 30 to 119 Gallons

- 6 Solar Models from 65 to 119 Gallons

316L Passivated Stainless Steel Tank

304L High Capacity Stainless Steel Coil

Fully Welded Construction

Lochinvar.com

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- a new Class of Water Heater

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Introducing Lochinvar’s newest member of the family, the Squire Stainless
Steel Indirect Water Heater. With 12 models to choose from in capacities from
30-119 gallons, we are sure to have the right size indirect water heater to fit
your application.

Squire now features important enhancements that our customers will recognize
and benefit from such as a welded and passivated stainless steel tank and heat
exchanger, two-inch thick, high-density insulating foam with a tested R Value
of 13.4, and best of all an American made product built in Lebanon, Tennessee.

Stainless Steel Tank Manufacturing

Laser Cut Precision

A CNC laser uses Programmable Logic Controls to precisely cut the Squire Indirect Water
Heater’s tank shell out of 14 gauge 316L stainless steel to a tolerance of .01 inch.

Tank Cylinder Roller

The computer controlled tank cylinder rolling machine ensures that the 316L stainless
steel is transformed into a geometrically perfect cylinder.

Coil Winder

Straight tubes are rolled by a seven axis coil winder and turned into a precise, round

LASER Cut Precision

Robotic Welder

This state of the art six axis programmable robotic welder uses computer guidance to
accurately weld all of the stainless steel fi ttings and coil to the stainless steel tank.

Hydrostatic Leak Test

After it leaves the robotic welder the tank is hydrostatically pressure tested to ensure
quality conformance.

coil used in the indirect water heater to transfer the BTU’s from the heat source to the
potable water stored in the tank.

Passivation Process

Each tank is subjected to a soaking spray of
nitric acid. This treatment washes away any
iron that was left behind during the welding
process and re-establishes the oxide level of the
stainless steel to ensure corrosion resistance.
By removing iron from the welded surfaces, the
Squire is less susceptible to corrosion brought
on by aggressive water.

Robotic Welder

Jacket and Foam

The dent resistant polypropylene jacket and ABS
caps are attached to the tank assembly, and then
high density foam is added using a high pressure
dispensing system to provide insulation that will
keep the heat where it belongs, in the water. The
result is an evenly foam insulated and jacketed
tank with an R-value of 13.4 and stand-by losses

Passivated for Protection

as low as .5°F per hour, depending on model.

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R-13.4 Foam Insulated