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Valent_IOM_Controls - RJI-Sales.com

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HW Cool OAT Ena<br />

Displays and edits the outside air temperature that<br />

when above the heat wheel will be enabled, when in<br />

outside air temperature operation.<br />

Range: 50-100 °F<br />

Default: 80 °F<br />

HW Effic Offset<br />

Displays and edits the number of degrees the outside<br />

air temperature has to be below the supply<br />

temperature setpoint in heating before the heat wheel<br />

is enabled in space temp mode. This setpoint is<br />

designed to counteract the efficiency of the heat<br />

wheel vs. the heat rise of the units heat source on low<br />

fire/minimum heat output.<br />

Range: 0-50 °F<br />

Default: 5 °F<br />

HW Humid LockOn Sp<br />

Displays and edits the outside air humidity that will<br />

force the heat wheel to run any time the exhaust fan<br />

is enabled.<br />

Editable<br />

Range: 0-100%<br />

Default: 65%<br />

HW OAT High LockOn<br />

Displays and edits the outside air temperature at<br />

which when above the heat wheel will be forced on<br />

when the exhaust fan is enabled.<br />

Range: 90-150 °F<br />

Default: 85 °F<br />

HW OAT Low LockOn<br />

Displays and edits the outside air temperature at<br />

which when below the heat wheel will be forced on<br />

when the exhaust fan is enabled.<br />

Range: -50-100 °F<br />

Default: 45 °F<br />

HW Start Sel<br />

Allows user to select if the heat wheel is controlled<br />

based on space temperature verses outside air<br />

temperature and supply setpoint, or based only on<br />

outside air temperature verses supply setpoint. OAT<br />

only will be automatically selected if a space sensor<br />

is not installed<br />

32. OAT Only<br />

33. Space Temp (default)<br />

Editable<br />

HW Exh Low Limit<br />

Displays and edits the exhaust air temperature that<br />

will put the unit into frost protect mode. If the unit is<br />

equipped with a VFD the heat wheel will slow down<br />

until the setpoint is maintained. If the unit is not<br />

equipped with a VFD the heat wheel will be jogged<br />

off and on to maintain setpoint.<br />

Range: 0-45 °F<br />

Default: 20 °F<br />

<strong>Controls</strong> V2 <strong>IOM</strong> 36 May 2011<br />

Part Number 474626

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