Navien NHB-055, Service Manual

Page: 47 / 147

NHB Service Manual 47 Version 1.0
Item Description Display
(8) Dual Venturi
Indicating current Dual Venturi
status.
In case of Dual Venturi Off.
In case of Dual Venturi On.
(9) LWCO
Indicating current LWCO input
status.
In case of LWCO Off.
In case of LWCO On.
(
▷
) Air Handler Output
Indicating current Air Handler
Interface output status.
In case of Air Handler Output Off.
In case of Air Handler Output On.
(
◁
)DHW priority Output
Indicating current DHW priority
output status
In case of DHW Priority Output Off.
In case of DHW Priority Output On.