General - Modine Manufacturing HSB Installation And Service Manual

OPERATION
figure 7.1 - Horizontal Delivery Unit Cutaway
figure 7.2 - Typical Horizontal Unit with
Standard Junction Box
figure 7.4 - Vertical Delivery Unit Cutaway
Motor-Cooling Cone — Shields
motor from coil heat — prolongs life
of insulation, windings, and lubricant.
Prolongs motor life.
Coil — Aluminum fins mechanically
bonded to tubes for maximum heat
transfer. All steam- and water-
carrying passages between heavy
steel pipe connections are copper, or
cupronickel.
Motor — All motors are totally
enclosed. Single phase types include
built-in thermal overload protection.
fan — Accurately balanced to
operate quietly and at lowest possible
power consumption.
Connections — Female-type permits direct connection of unit heater to the
piping. HC models have copper connectors at side of the unit.
Vertical fins — Less opportunity for dust and dirt to collect. Reduces cleaning.
Fins die-formed for added strength and heat transfer.
Coil — All air passes through coil. Heating is uniform. Design assures maximum
control over air delivery and temperature of air leaving the heater. Aluminum
fins die-formed for added strength — increased heat transfer. Fins mechanically
bonded to serpentine copper tube.
Motor — All motors are totally enclosed. Single phase types include built-in
thermal overload protection. All motor wiring is terminated in an electrical junction
box either supplied on the unit heater or as an integral part of the motor.
fan — Lightweight. Blades accurately balanced and pitched to move air quietly
and positively — with minimum power requirement.
Safety fan guard — Standard equipment. Bolted steel rod fan guard completely
surrounds the fan offering constant protection.
Deflector blades — Adjustable horizontal air-deflector blades are standard —
vertical blades are optional.
Casings — Electrostatically applied, gray-green polyester powder coat paint
finish is applied over rust- and corrosion-treated steel for long life.
figure 7.3 - Horizontal Unit with Optional
fingerproof fan Guard
1-550.28
Junction Box — Easier installation
with single point electrical connection.
Motor easily removable — Modine
design permits motor to be removed
through opening below the unit —
especially important where heaters are
installed close to ceiling.
Vertical fins — Less opportunity for
dust and dirt to collect. Exposed for
easy cleaning with air hose and brush.
Casings — Electrostatically applied,
gray-green polyester powder coat paint
finish applied over rust- and corrosion-
treated steel lasts longer.
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