Powers HydroGuard LM495 Series, HydroGuard LFLM495-1, HydroGuard LFLM495 Series, HydroGuard LM495-5 Installation Instructions Manual

Installation Instructions

COLD WATE

R

SUPPLY

POWERS SERIES LM495 O R
LFLM495 WITH INTEGRAL
CHECKS AND SCREENS

HOT WATER SUPPLY

IS-P-LM495

HydroGuard® Thermostatic Tempering Valves

ASSE 1069 and 1070 Series LM495 and LFLM495

NOTE:

Installation should be in accordance with accepted plumbing
practices. Flush all pipes thoroughly before installation. Installation and
field adjustment are the responsibility of the installer.

Installation n

1. Locate suitable place for the tempering valve. Valves should be accessible

for service and adjustment, and as close to the point of use as possible.

2. Bleed pressure from the system.

3. Route copper tubing or piping to fit valve dimensions.

4. For valves with Quick-Connect tailpieces refer to “Quick-Connect

Installation” instructions below.

5. Remove tailpieces from the valve and make sure union nuts are over

the tubing/piping before connecting to the tailpiece.

NOTE: If soldering, remove unions and gaskets from valve body prior to
soldering to prevent damage to valve from excessive heat.

6. Flush piping again, install valve using filter gasket on

hot and cold water inlets and fiber gasket on mixed
water outlet.

7. Turn on the cold and hot water. If any leaks are observed,

tighten connections as necessary to stop leak
before proceeding.

LM495 or
LFLM495

Hot

Cold

Quick-Connect Installation n

To Connect

7

1

⁄8 in. (47.63mm)

1 in.Pipe (25.4mm)

1

⁄2 in. (38.1mm)

1

1

3

⁄4 in. (44.45mm)

1

3

⁄4 in.Pipe (19.05mm)

LFLM495-1

⁄2 in.Pipe (12.7mm)

LM495-5

Advanced

Thermal Activation

Mixed

Figure 1.

Typical ASSE 1069 Application

Figure 2.

Single/Two Handle

Faucet Application

1. Mark pipe as shown.
This is pipe insertion depth.

PEX tubing only

Tail Piece

3. If using PEX tubing, insert pipe
stiffener (provided) into end of pipe.

Pipe Stiffener

To Disconnect

1. Remove collet clip.

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.

T u rn

Hotter

Hex Wrench

Colder

Unscrew, Lift Cap
to Adjust

Figure 3.

To Adjust Temperature (Figure 3) n

LM495 & LFLM495 is factory pre-set to 105°F (41°C) outlet tem­perature, under the following conditions:

Cold inlet: 60° - 70°F (16 - 21°C)
Hot inlet: 140° - 145°F (60 - 63°C)
Supply Pressures: 45psi (310 kPa)

1. Let the water flow for at least two minutes to allow supply tem­perature to stabilize.

2. Place a thermometer in the outlet water stream.

3. Loosen handle screw with hex wrench.

4. Handle must be lifted 1⁄4” to adjust temperature. Rotate handle
clockwise to decrease temperature and counter-clockwise to
increase the temperature.

5. Lower handle and tighten screw.

6. Check for outlet temperature.

NOTE: Pressure Differential between Hot & Cold Water
Supplies must be less then 25%.

Caution: Need Periodic Inspection n

This valve requires periodic inspection and verification
of outlet temperature by a licensed contractor. Corrosive water
conditions, inlet temperatures over 200°F (93°C), unauthorized
adjustments or repair could render the valve ineffective for
service intended. Regular cleaning and checking of thermostat
assembly helps to assure maximum life and proper product func­tion. Frequency of cleaning depends upon local water conditions.

Note: It is recommended that shut-off valve(s) be installed on the
inlet(s) to facilitate service of the LM495 & LFLM495 valve.

Repair Kit n

Model Part # Description

LM495 & LFLM495 495 100 Plunger/Motor Assembly

Troubleshooting n

Fluctuating or erratic hot water temperature at fixture:

Unbalanced pressure. Install balancing or throttling valve at the hot

and cold water supplies and adjust accordingly for demand.

Hot water backing up into cold water line:

Hot water pressure is higher than cold water pressure.
Examine check valves for dirt & debris, clean as necessary.

Cannot adjust water temperature to desired temperature:

Install balancing or throttling valve at the hot and cold water sup-

plies and adjust accordingly for demand.

High pressure drop through the tempering valve:

Valve undersized. Install larger thermostatic tempering valve.

Insufficient hot water during peak demand:

Check flow requirement during peak demand period. Use larger

thermostatic tempering valve.

WARNING

!

When used in an ASSE 1017 application at the hot water source, the Powers Thermostatic Mixing
Valve Series LM495 or LFLM495 cannot be used by itself to control final temperature at fixtures
where ASSE Standard 1016 or ASSE Standard 1070 listed devices are required. Such use may
result in severe bodily injury (i.e. scalding or chilling) and/or death. Additional ASSE Standard
1016, ASSE 1069 or ASSE Standard 1070 listed devices, such as Powers Series E480, LFe480,
LM495 or LFLM495 should be used at fixtures to prevent possible injury.
Recirculation systems should recirculate water at temperatures over 140°F to reduce the risk of
bacterial growth in the piping. This valve should not be used to achieve these elevated tempera­tures. This valve can be used at fixtures in conjunction with recirculation systems to reduce the
system’s hot water to a safe temperature at the point of use.

IMPORTANT!

Water temperatures in excess 110°F (43°C) are dangerous and may cause scalding, severe injury
or death! This valve can be adjusted to deliver water at temperatures exceeding 110°F (43°C).
Consequently, when used in an ASSE 1016, ASSE 1069 or ASSE 1070 application, the installer must
check the mixed water outlet temperature at the point of use and adjust the Powers Thermostatic
Mixing Valve Series LM495 and LFLM495 to ensure delivery of water at a safe temperature not
exceeding 110°F (43°C). Mechanical valves are not fail-safe. Due to the effects of various water
conditions, periodic verification of outlet water temperature is required.

WARNING

!

For valves with CPVC or PEX-end connections, do not
exceed the tubing manufacturers pressure and temperature
ratings. Refer to the tubing manufacturers product specifica­tions for that information.

ATTENTION INSTALLER:

After installation, please leave this Instruction Sheet for
occupant’s information.
IMPORTANT: Inquire with governing authorities for local
installation requirements.

Warranty n

The Seller warrants that the equipment manufactured by it and covered by this order or contract is free from defects in material and workmanship and, without
charge, equipment found to be defective in material or workmanship will be repaired, or at Seller’s option replaced F.O.B. original point of shipment, if written
notice of failure is received by Seller within one (1) year after date of shipment (unless specifically noted elsewhere), provided said equipment has been properly
installed, operated in accordance with the Seller’s instructions, and provided such defects are not due to abuse or decomposition by chemical or galvanic action.
THIS EXPRESS WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES, GUARANTEES, OR REPRESENTATIONS, EXPRESS OF IMPLIED. THERE ARE
NO IMPLIED WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE. The Seller assumes no responsibility for repairs made on the
Seller’s equipment unless done by the Seller’s authorized personnel, or by written authority from the Seller. The Seller makes no guarantee with respect to material
not manufactured by it.

A Watts Water Technologies Company

IS-P-LM495 1004 EDP# 6511208 © 2010 Powers

USA:  Phone: [phone] • Fax [phone] • www.powerscontrols.com

Canada:  Phone: [phone]  • Fax [phone] • www.powerscontrols.ca