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LFLM496-HTK

Hot Water Tank Capacity Extender

Technical Instructions

IS-P-LFLM496-HTK

!

Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use infor-

mation 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 prod-

uct must be tested periodically in compliance with local 

codes, but at least once per year or more as service con-

ditions warrant.  All products must be retested once main-

tenance 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 maxi-

mum life and proper product function. 

WARNING

!

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

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 adjust-

ment.
  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 gas-

ket is in place.

  3.  Connect tee to the cold inlet of the hot water tank, ensur-

ing that mixing valve connection is aligned to allow connec-

tion 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 con-

nected 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).

Specifiation 

n

Installation 

n

Local building or plumbing codes may require modifica-

tions 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.

WARNING

!

+

Thermostatic valve only

+

+

LFLM496-HTK

Thermostatic 

Mixing Valve

Elbow

Corrugated 

Stainless Steel 

Connector

Nipple

Tee

Figure 1

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