Navien NaviCirc Series Installation And Operation Manual page 9

4. In the R&D information menu, use the Up [+] or Down [-]
button to move to 2.PAR (Parameter information mode), and
then press the Information button.
No.
1 Technical information
2 Parameter information
5. Use the Up [+] and Down [-] buttons to enter Parameter #17
(P.17 – Enable Thermal Bypass Valve).
Item
Enabler thermal
P17
bypass valve
(Required Adjustments to the Available Parameters)
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Mode
Name
Set thermal bypass
valve operation
Description
9
Display
Display