Watts LFLLL40XL - Manual

Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
For Commercial Water Heater Applications
ES-LFLL/LLL-40XL
LEAD FREE
*
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
Series LFLL40 and
LFLLL40
Extended Inlet Shank Automatic
Re-seating T&P Relief Valves
Sizes: 3 ⁄
4
" and 1" (20, 25mm)
The combined 2-in-1 Temperature & Pressure relief valve provides
the least expensive and proven means for protection against both
excessive temperature and pressure emergency conditions.
Full automatic temperature and pressure relief protection for com-
mercial hot water supply tanks and heaters based on the latest ANSI
Z21.22 listing requirements for temperature discharge capacity.
LFLL40XL and LFLLL40XL with test lever and extended inlet shank
for use with the new generation of water heaters with extra thick
insulation. These valves eliminate the use of an extension nipple
required with standard shank length models.
Watts self-closing combination T&P relief valves are design certified
and listed by CSA and NB.
Features
• Lead Free* cast copper silicon alloy
• Non-mechanical seat-to-disc alignment
• Thermostat is accurate and proven. Exclusively designed and
manufactured by Watts
• Tamper-resistant bonnet screws
• Unique thermostat with a special thermo-bonded coating
Specifications
Temperature & Pressure Relief Valves
Each hot water storage heater shall be equipped with an automatic
temperature and pressure relief valve to protect the heater from
excessive pressure and excessive temperature. The device shall be
certified as meeting the requirements of ASME low pressure heating
boiler code and ANSI Z21.22. The BTU discharge capacity of the
device shall be in excess of the BTU input rating of the heater. The
device shall be constructed using Lead Free* cast copper silicon
alloy material. Lead Free* automatic re-setting T&P relief valve shall
comply with states codes and standards, where applicable requiring
reduced lead content. Valve shall be a Watts Series LF40.
Standards
ASME rated, ANSI Z21.22. Design certified and listed by CSA.
Meets current FHA and ANSI Z21.22 requirements in addition to
Military Spec. MIL-V 136-12D, Type I.
3 ⁄
4
" LFLL40XL
1" LFLL40XL
3 ⁄
4
" LFLLL40XL
1 21 ⁄ 32 "
3 21 ⁄
32
"
1 25 ⁄
32
"
Following installation, the valve lever MUST be operated AT LEAST
ONCE A YEAR by the water heater owner to ensure that the water-
ways are clear. Certain naturally occurring mineral deposits may
adhere to the valve, blocking waterways, rendering it inoperative.
When the lever is operated, hot water will discharge if the waterways
are clear. Precautions must be taken to avoid personal injury from
contact with hot water and to avoid property damage.
Pressure - Temperature
Temperature relief 210°F (98.9°C). Pressure range 75-150psi (5.17-
10.34 bar). Standard setting 75, 100, 125 or 150psi (5.17, 6.9, 8.61
and 10.34 bar).