Wiring Connection Table; Dip Switch Function Table - Navien H2Air Installation Manual

1.3.1 Wiring Connection Table

Terminal
AHU W1
AHU W2
AHU R
Flow switch
T/S W1
T/S W2
T/S R
Outdoor Sensor

1.3.2 Dip Switch Function Table

SW (DIP 1–4) ON
DIP 1 Outdoor reset not in use
Simultaneous DHW and
DIP 2
heating*
DIP 3 2-stage 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.
Wiring Connection
Connect to AHU W1
Connect to AHU W2
Connect to AHU R
Flow switch input terminal
Connect to thermostat W1
Connect to thermostat W2
Connect to thermostat R
Outdoor sensor input
OFF
Outdoor reset in use
DHW priority
1-stage thermostat using
Default
OFF
OFF
OFF
OFF
About the H Air 7
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