Proportional cooling - Verasys - LIT-12013067 - LC-IOM3711-0 - LC-VAC1000-0 - LC-VAC3000-0 - Field Device - Verasys Constant Volume Controller

Verasys Constant Volume Controller Application Note

Product
Controls > Field Controls > Verasys Constant Volume Controller
Document type
Application Note
Document number
LIT-12013067
Revision date
2023-04-27

From the Details > System Configuration, you can configure proportional cooling. The cooling coil output modulates to maintain zone temperature. The output ranges from 0% to 100% based on demand. Commissioning > Cooling menu ,you can also set the discharge low limit parameter. If the discharge falls below a Supply Air Setpoint Cooling Min parameter, which is initially set to 50°F, cooling slows or stops.

For more information about commissioning cooling, see Table 1.

If OAT Cooling Lockout is enabled, you can define a OA Cooling Lockout Setpoint to disable the cooling if OA-T is less than the OA Cooling Lockout Setpoint. You can define a FailSoft cooling value to place the cooling valve in this position when there is a low limit alarm.