Asia Pacific Only
Instruction Manual
May 2013
HSRL Series LP-Gas Regulators
HSRL Series
Figure 1. Type HSRL Series 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.
D103744X012
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HSRL Series
Specications
Tables 1 to 3 list the specications 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, orice 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 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
outlet pressure setting
1. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded.
Table 1. Maximum Operating Inlet Pressure
ORIFICE SIZE
Inch mm psig bar
3/8 9.5 105 30 2.1
1/2 13 185 20 1.4
WIDE-OPEN C
RELIEF SIZING
FOR
g
MAXIMUM OPERATING INLET PRESSURE TO OBTAIN
GOOD REGULATING PERFORMANCE
Table 2. Relief Performance
ORIFICE SIZE
Inch mm psig bar
3/8 9.5 15 1.0
1/2 13 9 0.6
MAXIMUM ALLOWABLE INLET PRESSURE IF OUTLET PRESSURE IS
HELD AT OR BELOW 2 psig / 140 mbar WITH DISC REMOVED
Table 3. Capacity, Connection Sizes, and Vent Orientation
END
CONNECTION
3/4-inch FNPT HSRL-BFC
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.
TYPE NUMBER
CAPACITY BTU/HR
PROPANE
2,100,000 10 psig / 0.69 bar 11 inches w.c./ 27 mbar
(1)
INLET PRESSURE
SETTING
OUTLET PRESSURE
SETTING
3/4-INCH NPT SCREENED VENT
STANDARD LOCATION
Over Inlet
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VENT POINTED DOWN
VENT POINTED DOWN
Figure 2. Regulator with Vent Pointed Down
3 FEET /
0.91 meter
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 fl 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 fl 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.
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HSRL Series
Figure 3. Tank Installation
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
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TO APPLIANCE
HSRL Series
VENT ASSEMBLY
VENT LINE
BASEMENT
FROM FIRST STAGE REGULATOR
Figure 4. Basement Installation
VENT OPENING MUST BE AT LEAST
3 FEET / 0.91 meter HORIZONTALLY
FROM ANY BUILDING OPENING BELOW IT
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HSRL Series
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 identied on the information label.
After the spring adjustment has been completed,
replace the closing cap.
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 buildup resulting from seat leakage due to worn parts or
chips or foreign material on the orice. 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.
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 Specications 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 Specications
section, it must be inspected for damage
that may have occurred.
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
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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, orice 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 reect the most recent construction.
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HSRL Series
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
For further information visit www.fisherregulators.com
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 effort 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 specications 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.
©Emerson Process Management Regulator Technologies, Inc., 2013; All Rights Reserved
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