MODGAS-XWR-1 Technical Guide
STAND-ALONE WIRING
9
Secondary Board 2V1IGN1S - Stand-Alone Wiring
Figure 6: Secondary Board 2V1IGN1S Stand-Alone Wiring Diagram
Secondary Board (2V1IGN1S) -
Stand-Alone Wiring
In this confi guration, the Two Modulating Valves wiring on the facing
page is the Primary portion and
Figure 6, below
is the Secondary por-
tion, thus creating four modulating valves as one stage.
This configuration operates as Stand-Alone (
Figure 6, below
) or
communicating with an AAON Unit Controller (
Figure 14, page 17
).
NOTE:
Up to 3 additional fi xed heat stages can be used by using
Heat Relays 2, 3 & 4 below and up to 12 more additional
fi xed stages can be added by using the 12-Relay E-BUS
Expansion Module. (
Figure 8, page 11
).
If using a MHGRV-X Controller along with the secondary MODGAS-
XWR Controller in Stand-Alone, the SAT Sensor always attaches to the
Primary MODGAS-XWR Controller.
