Emerson Fisher HSRL Series User manual

D103744X012

Instruction Manual

May 2013

HSRL Series

www.fisherregulators.com

Figure 1. Type HSRL Series Regulators

HSRL Series LP-Gas Regulators

WARNING

Failure to follow these instructions or

to properly install and maintain this

equipment could result in an explosion

and/or re causing property damage and

personal injury or death.

Fisher®equipment must be installed,

operated, and maintained in accordance

with federal, state, and local codes and

Fisher instructions. The installation in

most states must also comply with

NFPA No. 54 and 58 standards.

Only personnel trained in the proper

procedures, codes, standards, and

regulations of the LP-Gas industry

should install and service this equipment.

Things to tell the gas customer:

1. Show the customer the vent or vent assembly or

vent tube. Stress that this opening must remain

unobstructed at all times. Tell the customer to

check the vent opening after a freezing rain, sleet

storm, or snow to make sure ice has not formed in

the vent.

2. Show the customer the shutoff valve on the

container. The customer should close this valve

immediately if gas is smelled, appliance pilot lights

fail to stay on or appear higher than usual or any

other abnormal situation occurs.

3. Tell the customer to call your company to service

the regulator if the regulator vents gas or a leak

develops in the system. Only a qualied gas

service person should install or service

the regulator.

HSRL Series

Specications

Tables 1 to 3 list the specications for these regulators. Contact the factory if the regulator is to be used on any

service other than LP-Gas, natural gas, or air. The following information is located on the spring case:

Type number, orice size, spring range, and date of manufacture.

Body Size and End Connection Styles

3/4, 1, and 1-1/4 NPT

Allowable Inlet Pressure(1)

Emergency: 150 psig / 10.3 bar

Maximum Operating Pressure: See Table 1

Allowable Outlet Pressure(1)

Emergency (Casing): 25 psig / 1.7 bar

Maximum Operating Pressure to Avoid Internal

Parts Damage: 3 psi / 0.21 bar differential above

outlet pressure setting

Outlet Pressure Range

9 to 13 inches w.c. / 22 to 32 mbar

Temperature Capabilities

-20 to 160°F / -29 to 71°C

Pressure Registration

Internal

Approximate Weight

5.5 pounds / 2.5 kg

1. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded.

ORIFICE SIZE WIDE-OPEN CgFOR

RELIEF SIZING

MAXIMUM OPERATING INLET PRESSURE TO OBTAIN

GOOD REGULATING PERFORMANCE

Inch mm psig bar

3/8 9.5 105 30 2.1

1/2 13 185 20 1.4

Table 1. Maximum Operating Inlet Pressure

Table 2. Relief Performance

ORIFICE SIZE MAXIMUM ALLOWABLE INLET PRESSURE IF OUTLET PRESSURE IS

HELD AT OR BELOW 2 psig / 140 mbar WITH DISC REMOVED

Inch mm psig bar

3/8 9.5 15 1.0

1/2 13 9 0.6

Table 3. Capacity, Connection Sizes, and Vent Orientation

END

CONNECTION TYPE NUMBER CAPACITY BTU/HR

PROPANE(1)

INLET PRESSURE

SETTING

OUTLET PRESSURE

SETTING

3/4-INCH NPT SCREENED VENT

STANDARD LOCATION

3/4-inch FNPT HSRL-BFC

2,100,000 10 psig / 0.69 bar 11 inches w.c./ 27 mbar

Over Inlet

1-inch FNPT HSRL-CFC

1-1/4-inch FNPT HSRL-EHC 4,110,000 14.5 psig / 1.0 bar 12 inches w.c. / 30 mbar

1. Capacities based on 2 inches w.c. / 5 mbar droop.

HSRL Series

Introduction

Scope of the Manual

This Instruction Manual covers Installation and

Maintenance for the HSRL Series regulators, which

are second stage regulators used on LP-Gas vapor

service applications. They are not to be used on

liquid service.

Description

The HSRL Series regulators are second stage low

pressure regulators, provide low pressure, inches of

water column, delivery pressures. They are normally

set at 11-inches w.c. / 27 mbar pressure. They have

high capacity internal relief valve construction.

Installation

WARNING

All vents should be kept open to

permit free ow of air in and out of

the regulator. Protect vent openings

against the entrance of rain, snow, ice

formation, paint, mud, insects, or any

other foreign material that could plug

the vent or vent line.

LP-Gas may discharge to the

atmosphere through the vent. An

obstructed vent which limits air or

gas ow can cause abnormally high

pressure that could result in personal

injury or property damage. Failure to

use a vent line on Indoor Installations

can cause a hazardous accumulation

of gas which could result in personal

injury or property damage.

General Installation Instructions

Before installing the regulator:

• Check for damage, which might have occurred

in shipment.

• Check for and remove any dirt or foreign material,

which may have accumulated in the regulator body.

• Replace old pigtails. Blow out any debris, dirt or

copper sulfate in the copper tubing and the pipeline.

• Apply pipe compound to the male threads of the

pipe before installing the regulator.

• Make sure gas ow through the regulator is in the

same direction as the arrow on the body. “Inlet”

and “Outlet” connections are clearly marked.

Figure 2. Regulator with Vent Pointed Down

3 FEET /

0.91 meter

VENT POINTED DOWN

3 FEET /

0.91 meter

VENT POINTED DOWN

HSRL Series

Installation Location

• The installed regulator should be adequately

protected from vehicular trafc and damage from

other external sources.

• Install the regulator with the vent pointed

vertically down, see Figure 2. If the vent cannot

be installed in a vertically down position, the

regulator must be installed under a separate

protective cover. Installing the regulator with

the vent down allows condensation to drain,

minimizes the entry of water or other debris from

entering the vent, and minimizes vent blockage

from freezing precipitation.

• Do not install the regulator in a location where

there can be excessive water accumulation or ice

formation, such as directly beneath a down spout,

gutter, or roof line of building. Even a protective

hood may not provide adequate protection in

these instances.

• Install the regulator so that any gas discharge

through the vent or vent assembly is over 3 feet /

0.91 meter horizontally from any building opening

below the level of discharge.

• Install the regulator high enough above ground

level at least 18 inches / 45 cm—so that rain

splatter cannot freeze in the vent.

Regulators Subjected to

Heavy Snow Conditions

Some installations, such as in areas with heavy

snowfall, may require a hood or enclosure to protect

the regulator from snow load and vent freeze over.

Horizontally Installed Regulators

Horizontally mounted regulators, such as found in

single cylinder installations and ASME tanks, must

be installed beneath a protective cover or under

the ASME tank dome, refer to Figure 3. If possible,

slope or turn the vent down sufciently to allow any

condensation to drain out of the spring case. Be

careful that the slot in the tank dome or protective

cover for the regulator’s outlet piping does not expose

the vent to the elements.

Indoor Installations

By code, regulators installed indoors have limited inlet

pressure, and they require a vent line to the outside

of the building, see Figure 4. A vent assembly, such

as Fisher®. Y602 Series, should be used on the end

of the vent line. The same installation precautions,

previously discussed throughout this manual for

the regulator vent, apply to the end of the vent tube

assembly. Vent lines must not restrict the gas ow

Figure 3. Tank Installation

HSRL Series

Figure 4. Basement Installation

TO APPLIANCE

VENT ASSEMBLY

VENT OPENING MUST BE AT LEAST

3 FEET / 0.91 meter HORIZONTALLY

FROM ANY BUILDING OPENING BELOW IT

VENT LINE

BASEMENT

FROM FIRST STAGE REGULATOR

HSRL Series

Large volumes of gas may discharge

through the regulator vent during

internal relief valve operation, which

can, if not controlled, result in re or

explosion from accumulated gas.

The HSRL Series regulators contain internal relief

valves. The internal relief valve in all units will give

overpressure protection against excessive build-

up resulting from seat leakage due to worn parts or

chips or foreign material on the orice. The amount

of internal relief protection provided varies with the

regulator type and the cause for the overpressure

relief valve operation. When the internal relief valve

opens, gas escapes to the atmosphere through the

regulator’s vent.

Some type of additional external overpressure

protection must be provided if the outlet pressure in

an overpressure condition exceeds the inlet pressure

rating of the gas system or downstream equipment.

Common methods of external overpressure protection

include relief valves, monitoring regulators, shutoff

devices, and series regulation.

Maintenance

WARNING

To avoid personal injury or equipment

damage, do not attempt any maintenance

or disassembly without rst isolating

the regulator from system pressure and

relieving all internal pressure.

Regulators that have been disassembled

for repair must be tested for proper

operation before being returned to

service. Only parts manufactured by

Fisher®should be used for repairing

Fisher regulators. Relight pilot lights

according to normal startup procedures.

Due to normal wear or damage that

may occur from external sources,

these regulators must be inspected and

maintained periodically. The frequency

of inspection and replacement of the

from the regulator’s internal relief valve. Vent lines

should be at least 3/4-inch NPT pipe or 3/4-inch

NPT size, Gray PVC Schedule 40 Rigid Non-metallic

Electrical Conduit for above Ground Service, per

Underwriters Laboratories (UL®) 651. To install the

vent line, remove the vent screen and apply a good

grade of pipe dope to the male threads of the line.

Vent lines should be as straight as possible with a

minimum number of bends.

Adjustment

To increase the outlet pressure setting of the

regulator, the adjusting screw must be turned

clockwise. This requires removal of the closing

cap. To reduce the outlet pressure setting, turn

the adjusting screw counterclockwise. A pressure

gauge should always be used to monitor downstream

pressure while adjustments are being made. Do not

adjust the spring to produce an outlet pressure setting

above the limit identied on the information label.

After the spring adjustment has been completed,

replace the closing cap.

Overpressure Protection

WARNING

Some type of overpressure protection

is needed if actual inlet pressure can

exceed the outlet pressure rating.

Overpressuring any portion of this

equipment above the limits shown in

the Specications section may cause

damage to regulator parts, leaks in

the regulator, or personal injury due to

bursting of pressure-containing parts or

explosion of accumulated gas.

If any portion of the regulator is exposed

to an overpressure condition that

exceeds the limits in the Specications

section, it must be inspected for damage

that may have occurred.

HSRL Series

regulators depends upon the severity of

service conditions or the requirements of

local, state, and federal regulations. Even

under ideal conditions, these regulators

should be replaced after 20 years from

date of manufacture or sooner should

inspection reveal the need.

Visually inspect the regulator each time a gas delivery

is made for:

• Improper installation, vent not pointed vertically

down or under a cover; no vent tube on

underground systems

• Plugged or frozen vent

• Wrong regulator or no regulator in the system

• Internal or external corrosion

• Flooded Regulator; water in spring case; regulator

submersed on underground tanks

• Regulator age

• Any other condition that could cause the

uncontrolled escape of gas

Failure to properly inspect the regulator could result in

personal injury or property damage.

Vent Opening

Make sure the regulator vent, vent assembly, or vent

tube does not become plugged by mud, insects, ice,

snow, paint, etc. The vent screen aids in keeping the

vent from becoming plugged, and the screen should

be clean and properly installed.

Regulator Replacement

Older regulators are more likely to catastrophically

fail because of worn or corroded parts. Replace

HSRL Series regulators over 20 years of age. Other

service or environmental conditions may dictate

replacement of the regulator before it becomes

20 years old. Regulators that are installed on

underground systems and in areas that are subject

to sea salt (coastal) atmospheres should be inspected

annually for external and internal corrosion

and may require replacement sooner. Refer to

Fisher®Bulletin LP-32 for additional information.

Water inside Regulators from Floods

or Weather

Replace any regulator that has been ooded, has had

water in the spring case or shows evidence of external

or internal corrosion. Checking for internal corrosion

can be done by removing the closing cap and with the

aid of a ashlight observing the condition of the relief

valve spring, main spring, and internal spring barrel

area. A more detailed examination will require shutting

down the gas system and complete removal of the

adjusting screw. Closely examine regulators installed

with their vent horizontal for signs of corrosion.

Correct any improper installations.

Regulator Repair

Regulators that have been disassembled for repair

must be tested for proper operation before being

returned to service. Only parts manufactured by

Fisher should be used to repair Fisher regulators. Be

sure to give the complete type number of the regulator

when corresponding with the factory.

The type number, orice size, and spring range are

on a label attached to the spring barrel. The date of

manufacture is stamped on the regulator. Always

provide this information in any correspondence with

your Fisher Distributor regarding replacement parts

or technical assistance. If construction changes are

made in the eld, be sure that the regulator marking is

also changed to reect the most recent construction.

The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls International LLC,

a business of Emerson Process Management.

The contents of this publication are presented for informational purposes only, and while every eort has been made to ensure their accuracy, they are not to be construed as warranties or

guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specications of such

products at any time without notice.

Emerson Process Management Regulator Technologies, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and

maintenance of any Emerson Process Management Regulator Technologies, Inc. product remains solely with the purchaser.

LP-Gas Equipment

Emerson Process Management

Regulator Technologies, Inc.

USA - Headquarters

McKinney, Texas 75069-1872, USA

Tel: +1 800 558 5853

Outside U.S.: +1 972 548 3574

Asia Pacic - Headquarters

Singapore 12841

Tel: +65 6777 8211

For further information visit www.fisherregulators.com

HSRL Series

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