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MODGAS-XWR2 Technical Guide
STAND-ALONE WIRING
5
1V1IGN1S - Stand-Alone Wiring
Figure 2: One Modulating Valve, One Ignitor, One Stage Stand-Alone Wiring Diagram
One Modulating Valve, One Ignitor,
One Stage (1V1IGN1S) -
Stand-Alone Wiring
This configuration operates as Stand-Alone (Figure 2, below) or
communicating with an AAON Unit Controller (Figure 9, page 12).
This conguration is used to control one modulating valve, which must
be placed on the gas valve 1 header (attached 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-XWR2
Controller in Stand-Alone, the SAT Sensor always attaches to the
MODGAS-XWR2 Controller.
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