Watts LFL1170 - Manual

IS-1170-M2_L1170-M2
Instructions
Series LF1170 and LFL1170
Hot Water Temperature Control Valves
Size: 1 ⁄
2
", 3 ⁄
4
", 1"
LF1170-UT-M2 LF1170-QC-M2
Installation
Valve should be installed and adjusted by a licensed contractor
in accordance with local codes and ordinances. Further, this
valve should be installed in a location where it is accessible for
cleaning, service or adjustment.
1. Close both the hot and cold water shutoff valves upstream
nearest to the intended installation.
2. Bleed the remaining water from the system.
3. Connect the water supply to valve as shown in Figure 1 or 2,
depending on the application. Supply piping must be flushed
clean before making connections to the valve.
NOTICE
To prolong the life of the Model LF1170-M2 or LFL1170-M2
valve, it is recommended that it be trapped as shown (Figure1):
i.e. the hot water inlet to the LF1170-M2 valve should be 8" –
12" (200 – 305mm) below the hot water supply feed.
4. Valve can be installed in any position. Note: the inlet hot sup-
ply is to be connected to the “H” side of the valve, the cold
supply side to the “C” side and the mixed water outlet to the
“M” side.
5. Make sure union nuts are placed over tailpieces prior to
soldering or threading to pipe.
6. For valves with Quick-Connect tailpieces refer to “Quick-
Connect Installation” instructions below.
NOTICE
To prevent damage to valve from excessive heat during
soldering, remove unions and gaskets from valve body prior to
soldering.
7. After soldering, flush piping and install valve using filter wash-
er on hot and cold water inlet and fiber washer on the mixed
water outlet.
8. Start-up: Open cold water supply, then hot water supply.
Inspect for leaks.
9. Adjust temperature to desired setting (see Temperature
Adjustment Section).
WARNING !
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information
can result in death, serious personal injury, property
damage, or damage to the equipment.
Keep this Manual for future reference.
WARNING !
Use caution when soldering. Protect yourself and others. FUMES
AND GASES can be hazardous to your health. HEAT RAYS (INFRARED
RADIATION) from flame or hot metal can injure eyes.
WARNING !
You are required to consult the local building and plumbing
codes prior to installation. If the information in this manual
is not consistent with local building or plumbing codes,
the local codes should be followed. Inquire with governing
authorities for additional local requirements.
WARNING !
WARNING !
Need for Periodic Inspection and Yearly Maintenance:
Periodic inspection and yearly maintenance by a licensed
contractor is required. Corrosive water conditions, tempera-
tures over 200°F, unauthorized adjustments or repair could
render the valve ineffective for service intended. Regular
checking and cleaning of the valve’s internal components and
check stops helps assure maximum life and proper product
function. Frequency of cleaning and inspection depends upon
local water conditions.
FAILURE TO COMPLY WITH PROPER INSTALLATION AND
MAINTENANCE INSTRUCTIONS COULD CONTRIBUTE TO THE VALVE
FAILURE.
This Hot Water Master Tempering Valves cannot be used for temper-
ing water temperature at fixtures. Severe bodily injury (i.e., scalding
or chilling) and/or death may result depending upon system water
pressure changes and/or supply water temperature changes. ASSE
standard 1016, 1069 or 1070 listed devices should be used at fix-
tures to prevent possible injury.
These Hot Water Tempering Valves are designed to be installed at or near
the boiler or water heater. They are not designed to compensate for sys-
tem pressure fluctuations and should not be used where ASSE standard
1016, 1069 or 1070 devices are required. These valves should never be
used to provide “anti-scald” or “anti-chill” service.
The components of the system must be of materials with a construction
capable of withstanding the high limit output temperatures of the water
heating source.
WARNING !