Watts LFLLL100XL User Manual
For Water Heater Applications
ES-LFSL-100XL/LFL100XL/LFLL100XL/LFLLL100XL
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IMPORTANT: INQUIRE WITH GOVERNING AUTHORITIES
FOR LOCAL INSTALLATION REQUIREMENTS
Size 3⁄4" (20mm)
CSA Rated. Standard Models are self-closing T&P Relief Valves for Water
Heaters up to 105,000 BTU/Hr.
Watts Series LFSL100XL, LFL100XL , LFLL100XL and LFLLL100XL have
extended inlet shanks for use with the new generation of water heaters
containing extra thick insulation. These valves eliminate the use of an
extension nipple required with standard shank length models. They feature Lead Free* construction to comply with Lead Free* installation
requirements.
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.
Watts Self-closing combination T&P relief valves are design certified,
rated and listed by CSA to the requirements of ANSI Z21.22; and by the
National Board to the requirements of ASME Section IV.
They provide fully automatic temperature and pressure relief protection
for hot water storage tanks and heaters up to 105,000 BTU/Hr. The temperature sensing element must be immersed in the water within the top
6" (152mm) of the tank. Male inlet and female outlet. Temperature relief
210°F (99°C). Standard setting 75, 100, 125, 150psi (5.3, 7.0, 8.8, 10.6 bar).
Features
• Model LFSL100XL Extended inlet model for installations with thick insulation. Suitable for water heaters with up to 1
3
⁄4" (44.5mm) of insulation.
• Model LFL100XL Extended inlet model for installations with thick insulation. Suitable for water heaters with up to 2" (50.8mm) of insulation.
• Model LFLL100XL Extra extended inlet model. Suitable for water
heaters with up to 2
1
⁄2" (63.5mm) of insulation.
• Model LFLLL100XL Extra extended inlet model. Suitable for water
heaters with up to 3" (76mm) of insulation.
• Thermostats with special protective coating.
• All Lead Free* brass body.
• Stainless steel spring.
• Thermostat is accurate and proven. Exclusively designed and manufactured by Watts.
Specifications
Temperature & Pressure Relief Valves
Each hot water storage heater shall be equipped with a CSA and ASME
rated automatic temperature and pressure relief valve to protect the
heater from excessive pressure and excessive temperature. The device
shall be design certified, rated and listed by CSA to the requirements of
ANSI Z21.22; and by the National Board to the requirements of ASME
Section IV. The BTU discharge capacity of the device shall be in excess of
the BTU input rating of the heater. The Lead Free* Extended Shank T&P
Relief Valves shall comply with state codes and standards, where applicable, requiring reduced lead content. Watts Series LFSL100XL,
LFL100XL, LFLL100XL or LFLLL100XL.
LFLLL100XL
LFLL100XL
LFL100XL
LFSL100XL
Series LFSL100XL, LFL100XL,
LFLL100XL and LFLLL100XL
Extended Shank T&P Relief Valves
WARNING: Following installation, the valve lever MUST be operated
AT LEAST ONCE A YEAR to insure that the waterways are clear.
Certain naturally occurring mineral deposits may adhere to the valve,
rendering it inoperative. When manually operating the lever, please take
precautions to avoid contact with hot water that may discharge and to
avoid water damage. BEFORE operating lever, check to see that a
discharge line is connected to this valve directing the flow of hot water
from the valve to a proper place of disposal, otherwise personal injury
may result. If no water flows, valve is inoperative. TURN OFF THE
WATER HEATER AND CALL A PLUMBER IMMEDIATELY.
This device is designed for emergency safety relief and shall not be used
as an operating control.
LEAD FREE
*
*The wetted surface of this product contacted by consumable
water contains less than one quarter of one percent (0.25%) of
lead by weight.
Direct Side Tapping
Vertical discharge line must be installed with its direction downward.
For Heaters with Direct Top Tapping
Use standard or extra length extension thermostat.
Dimensions — Weights
NO. SIZE HEIGHT C.S.A. TEMP MODEL
LESS THERMOSTAT WIDTH WEIGHT STEAM RATING
inches mm inches mm inches mm lbs. Kgs. BTU/Hr
LFSL100XL
3
⁄4 20 4 102 17⁄8 48 .58 .26 105,000 Z5
LFL100XL
3
⁄4 20 41⁄4 108 17⁄8 48 .61 .28 105,000 Z5
LFLL100XL
3
⁄4 20 43⁄4 127 17⁄8 48 .65 .29 105,000 M7
LFLLL100XL
3
⁄4 20 51⁄4 133 17⁄8 48 .68 .31 105,000 Z5
WARNING: REINSPECTION OF T&P RELIEF VALVE: Temperature and Pressure Relief Valves should be reinspected AT LEAST ONCE EVERY THREE
YEARS by a licensed plumbing contractor or authorized inspection agency, to insure that the product has not been affected by corrosive water conditions
and to insure that the valve and discharge line have not been altered or tampered with illegally. Certain naturally occurring conditions may corrode the
valve or its components over time, rendering the valve inoperative. Such conditions are not detectable unless the valve and its components are physically
removed and inspected. Do not attempt to conduct this inspection on your own. Contact your plumbing contractor for a reinspection to assure continuing
safety. FAILURE TO REINSPECT THIS VALVE AS DIRECTED COULD RESULT IN UNSAFE TEMPERATURE OR PRESSURE BUILD-UP WHICH CAN RESULT
IN SERIOUS INJURY OR DEATH AND/OR SEVERE PROPERTY DAMAGE.
IMPORTANT: A relief valve functions in an emergency by discharging water. Therefore, it is essential that a discharge line be piped from the valve in order
to carry the overflow to a safe place of disposal. The discharge line must be the same size as the valve outlet and must pitch downward from the valve and
terminate at least 6"(152mm) above the floor drain where any discharge will be clearly visible. For 100DT discharge line consult your Watts agent.
Series LFSL100XL, LFL100XL, LFLL100XL and LFLLL100XL
Model LFSL100XL Suitable for water heaters with up to
1
3
⁄4" (44mm) of insulation
Model LFL100XL Suitable for water heaters with up to
2" (50.8mm) of insulation
Model LFLL100XL Suitable for water heaters with up to
2
1
⁄2" (63.5mm) of insulation
Model LFLLL100XL Suitable for water heaters with up to
3" (76mm) of insulation
13⁄4" to 3"
ES-LFSL100XL_LFL100XL_LFLL100XL_LFLLL100XL 0940
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
A Watts Water Technologies Company
Insulation
Max. 6"
(152mm)
Discharge
Line
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