VAV Terminal Units
Single Duct VAV
Standard Model: VAV – PID
The VAV – PID is the most common air terminal unit offered by “COSMOS”. It operates on the principle that as cooling load is satisfied, the primary damper modulates closed to restrict airflow to the space so that a constant space temperature is maintained. As the space cooling load is further satisfied, the VAV – PID closes to a pre-set minimum flow which is usually determined by the minimum level of ventilation required in the space.
Product Description
The VAV – PID is the most common air terminal unit offered by “COSMOS”. It operates on the principle that as cooling load is satisfied, the primary damper modulates closed to restrict airflow to the space so that a constant space temperature is maintained. As the space cooling load is further satisfied, the VAV – PID closes to a pre-set minimum flow which is usually determined by the minimum level of ventilation required in the space. In addition, the VAV – PID can also be used at full shutoff for those applications where minimum ventilation requirements are not necessary. Upon call for heat the damper shuts down to minimum.
Sound
The goal in designing VAV systems is to operate air terminals at low pressures and airflows, while still satisfying the design conditions. The VAV – PID is designed for quiet performance at typical operating conditions. However for those critical sound applications, an integral sound attenuator is offered as an option (VAV- PID SL).
Features
● Precisely design flow sensor grid.
● A wide variety of sizes (10) results in a total flow range of 45 to 7100 cfm.
● Heavy duty 22 gauge casing construction.
● Industry standard round inlet collars sized to accept either flexible or rigid duct.
● Internally lined casing utilizing opencell elastomeric nitrile foam rubber, fiberfree, supersilent & microban resistant.
● Round damper blade constructed of elastomeric gasket sandwiched between two heavy-duty 22 gauge galvanized steel plates, resulting in low-air leakage.
● Shaft with Delrin bearings. Shaft features a position indicator for easy identification of damper angle.
● 25mm flange connection on the discharge plenum.
Options
● The COSMOS VAV system can be applied in critical applications, including the control of CO2 levels, humidity etc.
● Programmable features to accommodate customized requirements, allowing for tasks such as light control, curtain control etc. to be managed through the VAV system.
● Cosmos VAV can be furnished without controls, with electronic analog controls, with factory-mounted direct digital controls (Siemens / Delta or equivalent).
● Integral discharge sound attenuator.
● Hanger brackets for 1/2″ threaded rod support.