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Series MMV and LFMMV
Thermostatic Tempering Valves
Sizes:
⁄
",
⁄
", 1" (15, 20, 25mm)
1
3
2
4
Installation Instructions
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, 2 or 3 depending on appli-
cation. Supply piping must be flushed clean before making connections to the valve.
4. Valve can be installed in any position. Note: the inlet hot supply 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
To prevent damage to valve from excessive heat during
Note:
soldering, remove unions and gaskets from valve body prior
to soldering.
7. After soldering, flush piping and install valve using filter washer
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). Watts recommends a maximum
temperature of 110°F (43°C) for shower and bathing fixtures.
Figure 1 – Typical ASSE 1069 Application
Typical MMV-M1 and LFMMV-M1 Applications
MMV-M1 or
LFMMV-M1
Cold
Hot
Mixed
Triple Listed!
ASSE 1017,
ASSE 1069 & ASSE 1070
Quick-Connect Installation
To Connect
1
1
/
in. (38.1mm)
2
/
in.Pipe (12.7mm)
1
2
1
3
/
in. (44.45mm)
4
/
in.Pipe (19.05mm)
3
4
1
/
in. (47.63mm)
7
8
1 in.Pipe (25.4mm)
1. Mark pipe as shown.
This is pipe insertion depth.
PEX tubing only
Pipe Stiffener
Tail Piece
3. If using PEX tubing, insert pipe
stiffener (provided) into end of pipe.
To Disconnect
1. Remove collet clip.
IS-MMV-M1
LFMMV-UT-M1
MMV-QC-M1
2. Clean pipe end.
Collet clip
Mark
4. Push tubing into tailpiece up to mark.
5. Insert collet clip.
Collet depressed
2. Depress collet.
3. Pull tubing from tailpiece.
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Related Manuals for Watts MMV Series
Summary of Contents for Watts MMV Series
- Page 1 8. Start-up: Open cold water supply, then hot water supply. in. (44.45mm) Inspect for leaks. 9. Adjust temperature to desired setting (see Temperature in.Pipe (19.05mm) Adjustment Section). Watts recommends a maximum temperature of 110°F (43°C) for shower and bathing fixtures. in. (47.63mm) 1 in.Pipe (25.4mm) 2. Clean pipe end.
- Page 2 Watts T&P Relief Valve MMV-M1 or LFMMV-M1 Cold † Devices tested to ASSE 1069 or ASSE 1070 such as Watts Series USG, LFUSG, L111, MMV or LFMMV should be used at Typical Typical fixture to prevent possible injury. Two Handled Faucet...
- Page 3 Capacity* W A R N I N G When used in an ASSE 1017 application at the hot water source, the Watts Thermostatic Tempering Valve Series MMV or LFMMV cannot be used by itself to control final temperature at fixtures where ASSE Standard 1016, ASSE 1069 or ASSE Standard 1070 listed devices are required.
- Page 4 Limited Warranty: Watts Regulator Co. (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.