Specification Sheet

HHeeaattiinngg DDiivviissiioonn
• Modine Manufacturing Company • 1500 DeKoven Avenue • Racine, Wisconsin 53403-2552
Phone: [phone] (HEAT) • FAX: [phone]
© Modine Manufacturing Company 1996 C5/98 - 2M Litho in USA
LLooccaattiinngg UUnniitt HHeeaatteerrss
1. Use as few unit heaters as possible to give proper heat
coverage of the area to be heated. The number of units
selected will depend on the heat throw or heat spread of the
individual heaters.
2. More than any other single factor, improper mounting height
is responsible for most heater installations. When unit
heaters are installed at heights higher than those
recommended, improper heat distribution is the result and
comfort conditions are either difficult or impossible to
maintain. And just the opposite, when installed too low,
excessive air movement may
cause discomfort.
3. Horizontal delivery type unit heaters should be located so
that the air streams of the individual units wipe the exposed
walls of the building with either parallel or angular flow
without blowing directly against the walls. Heaters should be
spaced so that each supports the air stream from another
heater. This sets up a circulatory air movement around the
area to produce a blanket of warm air along the cold walls.
4. It is advisable to locate unit heaters so that their air streams
be subjected to a minimum of interference from columns,
machinery, partitions, and other obstacles.
5. Unit heaters installed in a building exposed to a prevailing
wind should be located so as to direct a large portion of the
heated air along the windward walls of the building.
6. Large expanses of glass, or large doors that are frequently
opened, should be covered by long-throw unit heaters such
as large horizontal delivery unit heaters or door heaters.
7. In buildings having high ceilings, vertical delivery unit
heaters equipped with the correct air-distribution devices are
recommended to produce comfort in central areas of the
space to be heated. Horizontal delivery units are generally
used to heat the peripheral areas of the same building.
8. Horizontal delivery type units should be arranged so they do
not blow directly at occupants. Their air streams should be
directed down aisles, into open spaces on the floor, or along
exterior walls of the building.
9. When only vertical delivery units are used, they should be
located so that exposed walls are blanketed by their warm
air streams.
10.Several unit heaters may be operated by a single thermostat.
In large open spaces where similar activities are carried on,
zone heating will improve comfort and generally reduce fuel
costs. Unit heaters may also be controlled individually, either
manually or by a thermostat.
LLooccaattiioonn PPrreeccaauuttiioonnss
1. Do not install gas or oil-fired units in potentially explosive or
flammable atmospheres laden with grain dust, sawdust, or
similar air-borne materials. In such applications a blower
type heater is recommended in a separate room with ducting
to the dust-laden room.
2. Consult piping, electrical, and venting instructions in unit
installation manual before installation.
3. Do not locate ANY gas or oil-fired unit in areas where
chlorinated, halogenated or acid vapors are present in the
atmosphere.
4. Unit heaters installed in an occupied zone (less than 7 feet
above the floor level) must have fingerproof guards for all
moving parts (fans, belts, sheaves, etc.). High temperature
surfaces, such as flue pipes, must be installed or protected
by guards to prevent body contact.
5. Installation of unit heaters in high humidity or salt water
atmospheres will cause accelerated corrosion resulting in a
reduction of the normal life span of the units.