Navien NPE Installation & Operation Manual page 68

On-Demand Pipe Target Length (P.16)
Item Description
Set the on-demand operation
according to the desired pipe
15ft (4.5m) -
length if on-demand is used &
660ft (198m)
external surface temperature
(Unit: 5ft
sensor is not connected &
(1.5m))
thermal bypass is disabled.
(Default: 30ft (9m))
Setting is not possible when
On-Demand is not used, the
Settings external surface temperature
error sensor is connected, or the
thermal bypass valve is
enabled.
Enable Thermal Bypass Valve (P.17)
Item Description
Disable Thermal Bypass Valve.
1. OFF
(Default: Off)
2. ON Enable Thermal Bypass Valve.
If S-Type is set or Panel DIP3 is
Settings
On or Cascade is On or AHU
error
is enabled
Enable Navi-Link (P.18)
Item Description
Disable Navi-Link (P.18)
1. OFF
(Default: Off)
2. ON Enable Navi-Link (P.18)
Settings Cascade Protocol (P.01) NR/
error NP/NCW is set or Cascade On
68 Operating the Water Heater
Enable Exhaust Limit Control (P.19)
Display Item
1. OFF
2. ON
Cascade Unit On HC Offset (P.20)
Item
-15% - +15%
(Unit: 0.5%)
Settings
error
Display
Cascade Unit Off HC Offset (P.21)
Item
-5% - +5%
(Unit: 0.5%)
Settings
error
Display
Cascade External Tank Unit On Temp Offset (P.22)
Item
Cascade
External
Tank Unit
Off Temp
Offset
-
54°F (30°C)
(Unit: 1°F
(0.5°C))
Settings
error
Description
Disable Exhaust Gas Limit
Control.
Enable Exhaust Gas Limit
Control. (Default: On)
Description
Set the Unit On heat offset
value when operating
number control on Cascade.
(Default: 0%)
Cascade Slave
Description
Set the Unit Off heat offset
value when operating
number control on Cascade.
(Default: 0%)
Cascade Slave
Description
Set the offset value of Unit On
temperature while operating
number control on Cascade
when setting the external hot
water tank.
(Default: 13°F (7°C))
Cascade Slave
Display
Display
Display
Display