Installing The Device - Navien NPE-180A Service Manual

10.1.2 Specifications
Refer to the following table for product specifications.
Items Specifications
Model name KDO-A100
Add-on controller for Navien NPE-180A/240A
Device type
water heaters
Installation Snap-on (onto the NPE-180A/240A water heater
type PCB tray)
Main connector socket to water heater
Main control connector (13-pin cable)
Thermostat input terminals
Contacts for one thermostat (1 or 2-stage)
Connections
Outdoor sensor connection terminal
Contacts for one outdoor sensor
Output terminal to the air handler unit
Contacts for one AHU (1 or 2-stage)
10.1.3 CSA P.9 –11 Rating
Combo System
CSHE WHPF
Heat
Fan Coil
Generator
NPE-180A MMVE0S4NAAA 94 (%)
NPE-240A MMVE0M4NAAA 95 (%)
10.1.4 Device Layout
Refer to the following diagram for the product layout.
Recovery
TPF
Efficiency
0.96 97 (%) 0.94
0.95 96 (%) 0.95
Wiring Connection Table
Terminal Wiring Connection
AHU W1 Connect to AHU W1
AHU W2 Connect to AHU W2
AHU R Connect to AHU R
Flow switch Flow switch input terminal
T/S W1 Connect to thermostat W1
T/S W2 Connect to thermostat W2
T/S R Connect to thermostat R
Outdoor Sensor Outdoor sensor input
Dip Switch Function Table
SW (DIP 1–4) ON
Outdoor reset
DIP 1
not in use
Simultaneous
DIP 2 DHW and
heating*
2-stage
DIP 3
thermostat using
DIP 4 Reserved
* Depending on the DHW flow rate (demand), simultaneous DHW and
heating may not be available. When the DHW demand is high, DHW
supply takes priority and the heating may be temporarily turned off until
the DHW demand decreases, even when this function is activated.

10.2 Installing the Device

This section provides information required to install the H2Air+
add-on controller in an NPE-180A/240A water heater.
WARNING
Ensure that you have turned off the power to the water heater
before installing the device.
OFF Default
Outdoor reset
OFF
in use
DHW priority OFF
1-stage
OFF
thermostat using
OFF
+
+
H2Air+ 159