Install Instructions

DO NOT REMOVE THIS TAG!
CONBRACO
INDUSTRIES, INC.
INSTALLATION INSTRUCTIONS
10-400 SERIES
DO NOT
DO NOT USE A PIPE WRENCH!
WARNING!
MUST
DO NOT CAP, PLUG, OR OTHERWISE
OBSTRUCT DISCHARGE PIPE OUTLET!
OPERATING INSTRUCTIONS
MAINTENANCE AND TESTING
DO NOT REMOVE THIS TAG!
DO NOT ALLOW
CAUTION!
1) Use of this valve for any other purpose or media places all
responsibility upon the user.
2) Installation must be performed by qualified service personnel only.
3) The Btu/Hr rating of this valve must equal or exceed that of the
equipment to which it is installed.
4) use this valve on a coal or wood boiler having an
uncontrolled Btu heat input.
5) Insure that all connections, including the valve inlet, are clean
and free from any foreign material.
6) Use pipe compound sparingly, or tape, on external threads only.
7) Use proper type and size
wrench on wrench pads only.
8) This valve must be mounted in a vertical, upright position directly
to a clean, tapped opening in the top of the equipment. Under no
circumstances should there be a flow restriction or valve of any type
between the safety relief valve and the pressure vessel.
9) During operation, this valve may discharge large
amounts of steam and/or hot water. Therefore, to reduce the
potential for bodily injury and property damage, a discharge line
be installed that:
a. is connected from the valve outlet with no intervening valve and directed
downward to a safe point of discharge.
b. allows complete drainage of both the valve and the discharge line.
c. is independently supported and securely anchored so as to avoid applied
stress on the valve.
d. is as short and straight as possible.
e. terminates freely to atmosphere where any discharge will be clearly visible
and is at no risk of freezing.
f. terminates with a plain end which is not threaded.
g. is constructed of a material suitable for exposure to temperatures of 375°F
or greater.
h. is, over its entire length, of a pipe size equal to or greater than that of the
valve outlet.
10) See appropriate ASME Boiler and Pressure Vessel Code for
additional installation instructions.
Use only schedule 40 pipe for discharge. (Do not use schedule 80, extra strong,
or double strong pipe or connections.)
If adding water to equipment, water to flow
through safety relief valve as sediment or debris may be deposited
on seating surface.
To achieve topmost performance and maximum service life, it is
necessary to maintain a proper pressure margin between the set
pressure of the safety relief valve and the equipment's operating
pressure.
The recommended pressure differential between the pressure
relief valve set pressure and the boiler operating pressure should
be at least 10 psi, or 25% of the boiler operating pressure,
whichever is greater. Failure to maintain this operating margin may
result in water leakage past the seat and an accumulation of
deposits on the seating surface. Excessive deposits may prevent
the valve from operating properly, and a dangerous pressure
build-up and equipment rupture may result.
Before testing, make certain discharge pipe is properly
connected to valve outlet and arranged to contain and safely
dispose of equipment discharge (see "Installation Instructions).
Under normal operating conditions a "try lever test" must be
performed quarterly. Under severe service conditions, or if
corrosion and/or deposits are noticed within the valve body, testing
must be performed more often. A pressure test must also be
performed annually.
Test at or near maximum operating pressure by holding the test
lever fully open for at least 5 seconds to flush the valve seat free of
sediment and debris. Then release lever and permit the valve to
snap shut.
If the lever does not activate, or there is not evidence of
discharge, discontinue use of equipment immediately and contact
a licensed contractor or qualified service personnel.
Neither Conbraco Industries, Inc., nor its agents assume any liability
for valves improperly installed or maintained.
WARNING: This product contains lead, a chemical known to the State of
California to cause cancer and birth defects or other reproductive harm.
(Plumber: California law requires that this warning be given to the consumer)
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