Powers LFLM496-HTK Technical Instructions

Technical Instructions

!

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

Need for Periodic Inspection/Maintenance: This prod­uct must be tested periodically in compliance with local
codes, but at least once per year or more as service con­ditions warrant. All products must be retested once main­tenance has been performed. Corrosive water conditions,
inlet temperatures over 200°F (93°C), and/or unauthorized
adjustments or repair could render the product ineffective
for the service intended. Regular checking and cleaning
of the product’s internal components helps assure maxi­mum life and proper product function.

!

WARNING

Local building or plumbing codes may require modifica­tions to the information provided. You are required to
consult the local building and plumbing codes prior
to installation. If the information provided here is not
consistent with local building or plumbing codes, the
local codes should be followed. This product must be
installed by a licensed contractor in accordance with
local codes and ordinances.

Specifiation n

Temperature Adjustment 80° to 120°F (27° to 49°C)
Approach Temperature 5°F (3°C) above set point
Maximum Operating Pressure 125psi (861 kPa)
Maximum Hot Water Temperature 200°F (93°C)
Cold Water Temperature Range 39° - 80°F (5° - 27°C)
Maximum Pressure Differential
Between Hot and Cold Supplies 25%
Minimum Flow 0.5gpm (1.90lpm) when

tested in accordance with

ASSE1017 & ASSE 1070
Flow at 45psi pressure drop 13gpm (49lpm)
Listing (valve only) ASSE 1017, ASSE1070 and

IAPMO cUPC

IS-P-LFLM496-HTK

LFLM496-HTK

Hot Water Tank Capacity Extender

LFLM496-HTK

+ +

Installation n

Valve should be installed and adjusted by a licensed contractor
with local codes and ordinances. Further, this valve should be
positioned to allow easy access for cleaning, service andadjust­ment.

1. Connect hot water side of the valve to the hot water outlet
ofthe hot water tank. Make sure strainer gasket is in place.

2. Install elbow to the mixed outlet of the valve. Make suregas­ket is in place.

3. Connect tee to the cold inlet of the hot water tank, ensur­ingthat mixing valve connection is aligned to allow connec­tion to thecold side of the thermostatic mixing valve with a
corrugated stainless steel connector.

4. Connect female threaded side of the corrugated stainless
steel connector to the cold inlet of the thermostaticmixing
valve and male threaded side to the tee (as shown in Figure 1)

5. Install nipple to the tee and connect cold water inlet supply
to the nipple

6. Connect system hot water outlet supply to the elbow con­nected to the thermostatic mixing valve outlet.

7. Turn on cold water supply and then hot water supply. Check
for leaks.

8. Adjust temperature to desired setting (see Temperature
Adjustment Section).

Figure 1

Thermostatic
Mixing Valve

Corrugated
Stainless Steel
Connector

Nipple

Tee

+

Thermostatic valve only

Elbow

Temperature Adjustment n

1. Make sure hot water tank is turned on and supplying hot
water to the thermostatic mixing valve

2. Turn hot water on at the nearest outlet which is being sup­pliedby the valve. Let the water run for at least two minutes to
allow supply temperature to stabilize. Make sure to use ther­mometer to measure the water temperature.

3. See below to adjust the temperature setting of the thermo­static valve (Figure 2)

Figure 2

Hotter

Colder

3

/32" Hex Wrench

Turn

Unscrew, lift

cap to adjust

Capacity** n

kpa psi
345 50

276 40

207 30

138 20

69 10

Pressure Drop

0

0 2 4 6 8 10 12 14 gpm

7.6 15 23 30 38 46 53 lpm

Flow curves are for reference. Actual flows may vary depending on sys­tem temperatures and/or pressures.
**Flow curve with integral inlet filters and check valves

Troubleshooting Guide n

Symptom Cause Solution

Unable to reach required set point or set
point difficult to set

Unable to achieve required flow 1. Too much pressure drop at the fixture 1. Measure supply pressures and check against flow

Valve does not maintain required tempera­ture or temperature changes over time

1. Supply temperatures not within specified limits 1. Check differential temperature between hot and
cold supplies 5°F (3°) required

2. Hot and cold supplies reversed 2. Reinstall valve with supplies to correct connections

3. Filters are blocked by debris 3. Clean filters

chart. Look for restrictions in valve or piping

2. Check valves /filters blocked by debris 2. Clean check valves/filters

1. Fluctuation in supply pressure 1. Stabilize water pressures with pressure regulating
or balancing valves

2. Check valves /filters blocked by debris 2. Clean check valves/filters

Discharge temperature too hot or too cold Valve not calibrated properly Readjust valve temperature per installation instruc-

Valve is noisy 1. Water velocity is too high 1. Reduce water velocity with pressure regulating

2. Valve is not sized properly 2. Check flow required versus rated flow capacity of

No flow from valve Check valves /filters blocked by debris Clean check valves/filters
Flow from the valve fluctuates 1. Fluctuation in supply pressure 1. Stabilize water pressures with pressure regulating

2. Check valves /filters blocked by debris 2. Clean check valves/filters

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-LFLM496-HTK 1616 EDP#6512336 © 2016 Powers

tions

valve

the valve

or balancing valves

WARNING: This product contains chemicals known
to the State of California to cause cancer and birth
defects or other reproductive harm.

For more information: Watts.com/prop65

USA: Tel: [phone] • Fax: [phone] • PowersControls.com

Canada: Tel: [phone] • Fax: [phone] • PowersControls.ca

Latin America: (52) 81-1001-8600 • Fax: [phone] • PowersControls.com