Bell & Gossett HS 232C User Manual

INSTRUCTION MANUAL

HS-232

REVISION C

Hoffman Specialty

®

Series I
In-line Float and Thermostatic
Steam Traps

CAUTION

WARNING

• Before using product, read and understand instructions.

• Save these instructions for future reference.

• All work must be performed by qualified personnel trained in the proper application,
installation, and maintenance of steam systems in accordance with all applicable codes
and ordinances.

WARNING

!

®

• To prevent serious burns, wear heat resistant gloves when opening and closing steam
valves, or handling hot equipment.

• To prevent serious burns, the internal pressure of the trap must be 0 psi (0 bar) before
servicing.

• To prevent serious personal injury from steam pipe blow down, connect a temporary
pipe between the steam pipe opening and a drain, or stand at least 100 ft. (30m) from
the front of the pipe opening.

• To prevent property damage, personal injury, or death, cap off the gate valves if they
are not connected to a drain and when they are not in use for test or pressure relief.

Failure to follow this warning could cause property damage, personal injury or death.

IMPORTANT: To prevent system damage from water
hammer or sudden shock, open supply valves slowly.

If you are uncertain about the product’s adaptability for
your application, please call the factory or authorized
representative before using the product.

The trap seat rating (stamped on the nameplate) must
be equal to or greater than the maximum pressure differ­ential across the trap.

2

The balanced pressure thermostatic element is
open to vent air from the steam space into the
return line.

The balanced pressure thermostatic element
is closed to prevent the loss of steam into the
return line.

The float will modulate to provide continuous
drainage of condensate.

OPERATION

START-UP

NORMAL OPERATION

3

INSTALLATION –

Series I In-line Float and Thermostatic Steam Traps

TYPICAL PIPING DIAGRAMS

Trap Draining to Open Drain

Trap Draining to Gravity Return Line

Trap Draining to Overhead Return Line

or Pressurized Return Line

1. Determine where to install the trap,

based on the following requirements:

a. The trap must be located as close

as possible and below the equipment
to be drained.

b. The trap must be in a straight run

of horizontal pipe and pitched to
allow condensate to flow into the
trap inlet and away from the
trap outlet. Refer to the Typical
Piping Diagrams at the right.

c. Plenty of space around the trap is

needed for servicing, which may
include removal of the body or cover.

2. Install a shut-off valve (A) on the inlet pipe (B).