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ManualsBrandsTrane ManualsHeatersTrane S&P Unit Heaters

36 UH-PRC001-EN

Horizontal Specifications

General

Furnish and install, where indicated

or scheduled on plans Model S

horizontal 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

Casings are fabricated from 20

gauge die-formed steel. Casing

substrates are prepared for finishing

with a hot wash, iron phosphatizing

clear rinse, chromic acid rinse and

oven drying. Paint finish is leadfree,

chromate free, alkyd melamine resin

base and applied with an

electrostatic two-pass system. Finish

is baked at 350°F.

Coil Models 18 – 360

Coil elements and headers are heavy

wall drawn seamless copper tubing.

Element tubes are brazed into

extruded header junctions. Pipe

connection saddles are cast bronze.

Aluminum fins have drawn collars to

assure permanent bond with

expanded element tubes and exact

spacing. All Element Assemblies are

submersion tested at factory at 250

P.S.I., and are rated at 150 pounds of

saturated steam pressure at 366°F,

under maximum load conditions. We

recommend operating pressure of 75

P.S.I. at 320°F for long life.

Motors

Motors are totally enclosed, resilient

mounted with class “B” windings.

All motors are designed for

horizontal mounting. Motors under

1/3 H.P. are totally enclosed, frame

mounted, 115/1/60 with thermal

overload protection and

permanently lubricated sleeve

bearings with optional solid state

speed controller available. 1/3 H.P.

(115/1/60) motors are open frame

construction, with thermal overload

protection and ball bearings. 1/3 H.P.

at (230V) and1/2 H.P. (230V) motors

are open frame construction, with

thermal overload protection and ball

bearings. 1/3 and 1/2 H.P. motors are

available in single and 3 phase in

open frame construction or

explosion-proof housings, all the

above are available as options.

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.

Motors comply with the National

Electrical Code classification as

follows:

Class I, Group D; all sizes

Class II, Group F; all sizes

Class II, Group G; all sizes

Division I & II Installations

T-code (T3B)

Explosion proof equipment is not

generally available for Class I,

Groups A and B and it is necessary

to isolate motors from the hazardous

area. All explosion proof motors are

shelf mounted.

Fans

Fans are aluminum blade, hub type

designed and balanced to assure

maximum air delivery, low motor

horsepower requirements and quiet

operation. Blades are spark proof.

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. An

optional vertical louver is available

for four-way air control.

Serpentine Coil Specifications

General

Furnish and install, where indicated

or scheduled on plans Model S-A

horizontal 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.