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Zone
STAND-ALONE WIRING
MODGAS-XWR2 Technical Guide
8
2V1IGN1S - Stand-Alone Wiring
2 Modulating Valves, 1 Ignitor,
1 Stage (2V1IGN1S) - Stand-Alone
Wiring
This configuration operates as Stand-Alone (Figure 5, below) or
communicating with an AAON Unit Controller (Figure 13, page 16).
This conguration is used to control two modulating gas valves (one
on each header), in which the rst and second valves operate together
for one modulating stage. Both valves are connected to Heat 1 Relay.
NOTE: Up to 3 additional xed heat stages can be used by using
Heat Relays 2, 3 & 4 below and up to 12 more additional
xed stages can be added by using the 12-Relay E-BUS
Expansion Module. (Figure 8, page 11).
If using an MHGRV-X Controller along with the MODGAS-XW2
Controller in Stand-Alone, the SAT Sensor always attaches to the
MODGAS-XWR2 Controller.
Figure 5: 2 Modulating Valves, 1 Ignitor, 1 Stage Stand-Alone Wiring Diagram
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