AAON MODGAS-XWR2 ASM01695 Modulating Gas Valve Control Module
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PHYSICAL
Configurable Unit Controllers that Can be Used for Multiple Applications
The MODGAS-XWR2 Module is designed to be used with White-Rogers® valves only. It will modulate up to two White-Rogers® gas valves to maintain a desired Discharge (Supply) Air Temperature (up to four modulating gas valves may be controlled when a second MODGAS-XWR2 is configured as a slave module). The MODGAS-XWR2 also controls the speed of the induced draft fan to maintain proper combustion in the heat exchanger.
The MODGAS-XWR2 can be used in Stand-Alone Mode or connected to a VCCX Controller, VCCX2 Controller, VCCX-IP Controller, VCCX-454 Controller, VCB-X Controller, or VCM-X E-BUS Controller using a modular cable.
Electrical and Environmental
| Parameter | Value |
|---|---|
| Operating Power | 18-30 VAC |
| Operating Temperature | -22°F to 158°F |
| Power Consumption | 18 VA Maximum |
| Operating Humidity | 0-95% RH, Non-Condensing |
| Inputs | 3 Analog Inputs, 2 Binary Inputs (Pre-assigned) |
| Outputs | 6 Relay Outputs (Pre-assigned) |
NOTE: The MODGAS-XWR2 provides two more relays than the MODGAS-XWR and can replace the MODGAS-XWR. The MODGAS-XWR2 does not support the VCM-X Controller or I2C connections.
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INSTALLATION
Mounting
The MODGAS-XWR2 Module is housed in a plastic enclosure. It is designed to be mounted using the three mounting holes in the enclosure base and the included mounting screws (#8 x 1" sheet metal screws).
The MODGAS-XWR2 needs to be installed in an environment that can maintain a temperature range of -22°F to 158°F not to exceed 95% RH levels (Non-Condensing). It is important to mount the device in a location that is free from extreme high or low temperatures, moisture, dust, and dirt. Be careful not to damage the electronic components when mounting the module.
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