Zone
Zone
STAND-ALONE WIRING
MODGAS-XWR2 Technical Guide
6
2V2IGN2S - Stand-Alone Wiring
Figure 3: 2 Modulating Valves, 2 Ignitors, 2 Stages Stand-Alone Wiring Diagram
2 Modulating Valves, 2 Ignitors,
2 Stages (2V2IGN2S) - Stand-Alone
Wiring
This configuration operates as Stand-Alone (
Figure 3, below
) or
communicating with an AAON Unit Controller (
Figure 11, page 14
).
This configuration is used to control two modulating gas valves (one
on each header), in which the first valve is modulating stage 1 (valve
1 header) and the second valve is modulating stage 2 (valve 2 header).
The first valve is attached to Heat Relay 1 and the second valve is at
-
tached to Heat Relay 2.
NOTE:
Up to 2 additional fixed heat stages can be used by using
Heat Relays 3 & 4 below and up to 12 more additional
fixed 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.
