T-45NL & T-46NL
THERMOSTATIC MIXING VALVES
Installation Guide
5
Operation
When properly installed, under the correct operating parameters and properly adjusted, both models
will operate automatically.
The correct operating parameters must be present:
Factory pre-set: 107.6°F
T-45NL
Temperature adjustment range: 86°F to 120°F
Cold water supply temperature range: 41°F to 68°F
Hot water supply temperature range: 132.8°F to 149°F
Accuracy of mixed water temperature: +/- 3.8°F
Minimum temperature differential between hot supply and MIX outlet: 21.6°F
Supply pressure: Static: 145 psi
Dynamic: 72.5 psi
Maximum allowable imbalance: 2:1 ratio
Minimum flow rate: 0.5 gpm
@ 0.8 psi
(see note A)
Maximum flow rate: 15 gpm @ 125 psi
(see note A)
T-46NL
Temperature adjustment range: 86°F to 130°F
Cold water supply temperature range: 41°F to 68°F
Hot water supply temperature range: 132.8°F to 149°F
Accuracy of mixed water temperature: +/- 3.8°F
Minimum temperature differential between hot supply and MIX outlet: 21.6°F
Supply pressure: Static: 145 psi
Dynamic: 72.5 psi
Maximum allowable imbalance: 2:1 ratio
Minimum flow rate: 0.5 gpm @ 0.8 psi
(see note A)
Maximum flow rate: 15 gpm @ 125 psi
(see note A)
Note A: Should not be used for valve selection or system sizing. The Cv valve listed on the product
submittal sheet should be used for valve selection.
Maintenance
Annually inspect the unit for any leakage. Correct as necessary. Annually check the mixed temperature
supply. Over time, performance could diminish due to hard water conditions or pipe scale causing
binding of the internal piston. Shut off the water supply and remove the unit by loosening and detaching
the union ends. Inspect the internal waterways. If they’re clogged with debris, it is likely that the unit’s
piston is binding. Immersion and soaking of the unit in the appropriate de-scaling formula should
restore function.
DO NOT DISASSEMBLE
the unit! If after soaking the unit continues to malfunction,
REPLACE
the entire unit.
Questions?
Please contact Legend Technical at 800-752-2082
www.legendvalve.com
866-752-2055
300 N. Opdyke Rd.
Auburn Hills, MI 48326
