5100 Series Horizontal or Vertical Mounted Fan Forced Unit Heater
• Made in U.S.A.
FIELD INSTALLED OPTIONS:
• In-unit or wall mounted
temperature control thermostats
low or line voltage.
• Summer fan switch to operate
the fan only.
• Power disconnect switch.
• Heat stratification thermostat.
Installing the Taskmaster Series
DETERMINING HEATER REQUIREMENTS
Calculate the heating loads using the NEMA handbook or ASHRAE guide. Then determine the quantity and
size of unit heaters to be used. To maintain uniform heat and reduce stratified air, it is recommended that the
total CFM of the units turn the air over approximately 3 times per hour. In instances where a large group of
people are located and normally in the same area, use a large number of lower KW unit heaters. In warehouse
areas or storage rooms where heat distribution and constant temperatures are less important, use fewer heaters
of higher capacity.
Small rooms can be heated by one unit heater. Where two walls are exposed, heaters should be mounted as
shown in Figure A. In larger rooms, units should he located so their air streams wipe exposed walls without
blowing at them. Units should be located so that the air stream of one supports that of another thus setting
up a circulatory air movement shown in Figure B. (Distance between units to be approximately 1-1/2 times
published air throw.) Units should not be mounted horizontally in areas having ceiling heights in excess of
Units should be mounted vertically in high bay areas, or where heater location would not interfere with plant
operation or traffic, Heaters should be situated to provide free air circulation. Size and selection of units should
be based on recommended mounting height. Optional diffusers may best be employed to reduce high air
velocity and at the same time disperse heated air in a uniform pattern. When unit heaters are used to combat
cold air inrush from opened loading dock doors, one or more units should be arranged to blow warm air across
opening (Figure C).
Where square footage is large and comfort essential, both horizontal and vertical installations may best serve
your requirements as Figure D demonstrates.
Heavy 18 gauge welded steel cabinet with powder coated finish and control compartment housing
a master terminal board with a hinged and latched access door, simplifying wiring, installation &
Copper clad steel sheath element
with continuously brazed steel fins
formed to allow side draw through
All units come equipped with
automatic reset type limit controls
to de-energize the heater should an
over-temperature situation occur.
FAN and MOTOR:
Totally enclosed, 1-speed, 1-phase, permanently lubricated, thermally protected motors with unit
bearings on 3 KW - 20 KW models. Totally enclosed, 2-speed, 1-phase, permanently lubricated,
thermally protected motors with sleeve bearings on 25 KW - 50 KW models. All motors mounted
with rubber insulators to minimize vibration & noise. Fan over-ride purges unit of residual heat at
Louvers are individually adjustable for directional control of air flow up to 15° from straight
horizontal. Optional diffusers available for down flow (vertical discharge) applications.
Optional low voltage and line voltage thermostats available with an adjustable temperature range of
40°F to 110°F. Units with model numbers ending in CA1 are factory wired for low voltage controls.
25 KW through 50 KW units are designed for two stage heating operation.
Unit Heaters can be mounted for horizontal or vertical discharge.
Applications up to 6000 Ft. See UH Series above 6000 Ft.
H W D
3.3 - 5.0 17 3/4 14 15/32 6 1/2
7.5 - 10.0 24 5/16 21 1/2 6 1/2
15.0 - 20.0 28 11/16 21 1/2 6 1/2
25.0 - 50.0 34 29 1/4 10 1/16
Note: Products in this section with factory installed controls are subject to 100% cancellation/restocking charges.