Instruction Manual

Low Pressure Regulators
2
Specifications
LP-gas may discharge to the atmosphere
through the vent. An obstructed vent which
limits air or gas flow 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.
Never use a first-stage (pounds to pounds)
regulator on low pressure (inches of water
column) service because personal injury or
property damage could occur.
Make sure gas flow through the regulator is in the same
direction as the arrow on the body – ”Inlet” and “Outlet”
connections are clearly marked. The installation should be
adequately protected from vehicular traffic and damage from
other external sources. Install the regulator so that any gas
discharge through the vent or vent assembly is over 3-feet
(0,91 meters) horizontally from any building opening below
the level of the discharge.
Install the regulator high enough above ground level – at least
18-inches (457 mm) – so that rain splatter cannot freeze in the
TYPE NUMBER
SIZE, INCH FNPT
TYPE OF SERVICE
MAXIMUM INLET
PRESSURE,
PSIG (bar)
VAPOR CAPACITY,
BTU/HR.
PROPANE
INLET CONNECTION OUTLET CONNECTION
912
†
1/4 1/4 or 3/8 Single-Stage 250 (17,2) 350,000*
R322 1/4 1/2 or 3/4 Integral Two-Stage 250 (17,2) 660,000
R352 3/4 3/4 Second-Stage 20 (1,38) 1,250,000
R722
3/4 or F. POL
3/4 Single-Stage 250 (17,2) 4,250,000
3/4 3/4 Second-Stage 20 (1,38) 2,500,000
R922
1/4, 1/2 or F. POL 1/2 or 3/4 Single-Stage 250 (17,2) 725,000
#
1/2 1/2 or 3/4 Second-Stage 20 (1,38) 750,000
R932
3/4 or F. POL
3/4 Single-Stage 250 (17,2) 1,200,000
1/2 3/4 Second-Stage 20 (1,38) 1,250,000
S102L 3/4 – 1-1/2 3/4 – 1-1/2 Second-Stage 20 (1,38) 2,000,000
vent. Whether a protective hood is used or not, 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 a building.
A regulator installed outdoors without a protective hood
must have its vent pointed vertically down, see figure 2, to
allow condensate to drain. This minimizes the possibility of
freezing and of water or other foreign material entering the
vent and interfering with proper operation.
Before installing the regulator, check for damage which might
have occurred in shipment. Also check for and remove any
dirt or foreign matter which may have accumulated in the
regulator body or the pipeline. Apply pipe compound to the
male threads of the pipe.
Some installations, such as in areas with heavy snow fall
or on recreational vehicles where there is road splatter,
Figure 2. Point Vent Down on Outdoor Installations
VENT
ASSEMBLY
VENT OPENING
MUST BE AT LEAST
3-FEET (0,91 meters)
HORIZONTALLY
FROM ANY BUILDING
OPENING BELOW IT
FROM FIRST STAGE
REGULATOR
VENT
LINE
TO APPLIANCES
Figure 3. Typical Indoor Installation With
Vent Line and Vent Assembly
VENT
*320,000 BTU/Hr. with pigtails
#
437,500 BTU/Hr. with pigtails
†
Vent not normally tapped for vent tubing
POINT VENT
DOWN
BASEMENT