20
Configuring the Device
4.
Configuring the Device
This section provides the information required to set the desired options for the
Navien water heater system with the H
2
Air add-on controller.
4.1
System Air Removal
Make sure to remove all excess air from the combination system piping. To
assist with this process, the NPE and NPE-A2/S2 Series water heater models
have an available TEST MODE feature (see below).
For NPE and NPE-A2/S2 - Enter the Special Operations menu to access the
TEST MODE feature by pressing the [Diagnostic] and [Back] buttons. Choose
TEST MODE, then PUMP to allow the unit to cycle the internal pump. This
process will assist in removing the remaining air from the system piping by
either using the provided air vent on the internal pump or optional air
removal accessories installed on the system piping.
4.2
Pump Control Options
CAUTION
The drawings in this instruction are intended only as a guide and are not
replacements for professional engineering drawings. This drawing represents
a concept system and does not imply compliance with local building codes.
Actual installation requirements may vary depending on installation locations
and parameters. All installation work must be carried out in accordance with
all local building codes. Verify with local building officials before commencing
system installation.
The following example demonstrates the application of pump control
configuration options.
