Catalogue

UH-PRC001-EN 37
Mechanical Specifications
Coil Models S-A08– S-A36
Coil is a serpentine design with
seamless copper tubing. Aluminum
fins have drawn collars to assure
permanent bond with expanded
tubes. Tubing connection are 3/8"
copper tubing, type “M” (.500 O.D.).
Coils are factory tested at 250 P.S.I.
Motors
Motors are totally enclosed, resilient
mounted with class “B” windings. All
motors are designed for horizontal
mounting.
Fans
Fans are aluminum blade type,
designed and balanced to assure
maximum air delivery, low motor
horsepower requirements and quiet
operation.
Fan Guards
Fan guards are welded steel, zinc
plated or painted. To meet CSA and
OSHA requirements, units mounted
below 8 feet from floor must be
equipped with an OSHA fan guard.
OSHA fan guards are optional.
Air Deflection Louvers
Units are equipped with horizontal,
individually adjustable louvers.
Vertical Specifications
General
Furnish and install, where indicated
or scheduled on plans Model P
vertical steam/hot water unit heaters.
Unit shall be equipped as specified
herein. All units shall be installed in
a neat and workmanlike manner in
accordance with this specification
and the manufacturer's installation
instruction.
Casing
Casing is formed by two square steel
plates. Bottom plate forms orifice for
air delivery. Air ports stamped in top
plate as standard for easy removal
for low final air temperature.
Coil
Hot water/steam coils are rectangular
3 or 4-sided, one-pass, multiple
circuit, with aluminum Sigma-Flow
(there should be a registered sign
after Sigma-Flow) fins mechanically
bonded to tubes. Standard coils are
tested at 375 psi under water. Supply
and return connections are steel
pipe. Standard coils have .025
copper tubing suitable for use on
steam pressure to 75 psi or hot water
up to 225 psi or 325 F. Optional .049
steel tubing is suitable for use for 450
F water at 400 psi.
Motors
Standard motors are 115/60/1, totally
enclosed, with thermal overload
protection for all units through size
280P. Standard motors for 42P, 64P
and 80P are shaded pole, sleeve
bearing. The 102P motor is
permanent split capacitor type with
sleeve bearings. Motor for unit sizes
122P through 280P are permanent
split capacitor types with
permanently lubricated ball bearings.
Motors used unit sizes 336P through
720P are 230/460/60/3, totally
enclosed, with permanently
lubricated ball bearings. Unit sizes
smaller than 336 are also available
with 230/460/60/3 motors.
All motors fraction hp and integral
hp, have Class "B" insulation. The
115/60/1 motors used as standard on
unit sizes 42P through 102P can be
operated at multiple speeds with the
addition of a solid-state speed
control.
Explosion Proof Motors
An enclosed motor whose enclosure
is designed and constructed to
withstand an explosion of a specific
gas or vapor which may occur within
the motor and to prevent the ignition
of this gas or vapor surrounding the
machine. All units are available with
1140 rpm explosion-proof motors.
Fan
Fans are aluminum blade designed
and balanced for quiet operation.
Blades are spark proof.
Louver Cone Diffuser
Optional louver cone diffuser is
available for complete versatility in
air diffusion patterns. Adjustable 18-
gauge steel blades are held in set
position by spring steel clips.