SZVAV - Operates in DX and Economizer Cooling Modes of Operation
Single Zone VAV operates in DX and economizer cooling modes of operation when configured for
System Type: VVZT (variable speed indoor fan type) or CVZT (multi-speed indoor fan type). A valid space temperature and discharge air temperature sensor are required inputs. If the discharge air temperature input becomes invalid, the control automatically reverts to Single Loop Space Temperature Control. Symbio™ 700 operates in Single Loop Space Temperature Control in heating modes when
staged gas heat and staged electric heat are configured.
Single Zone VAV is a control method of space temperature control that operates the supply fan at the
lowest allowed cooling capacity required to satisfy the load in the space. As cooling capacity increases, the supply fan speed will increase accordingly until it reaches 100% of its allowed range of
operation.
When there is no demand for heating or cooling the supply fan operates at the minimum speed setting
while providing ventilation according to occupancy setpoints, see the following figure. Alternately, the
supply fan can be set up to cycle off when there is no demand for heating or cooling via Supply Fan
Configuration Command setting.
Click the e-library symbol for the latest version
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.