PAS ‐ Pressure Air System
The Pressure Air System (PAS) maintains a constant pressure in the mechanical room or ducted supply. Designed with EC-Flow Technology™ the PAS takes advantage of US Draft Co. proprietary bi-directional pressure transducer and PID technology to rapidly respond to varying outdoor pressures to maintain a neutral pressure in the mechanical room or appliance inlet duct when compared to atmosphere. Utilizing an inline or wall mounted supply fan, the VIC or VRX series controller, pressure transducer and outdoor sensor, the system interlocks with fossil fuel fired heating appliances to maintain the required combustion air of the manufacturer. The PAS meets all requirements for the National & International Fuel Gas Codes and the Uniform & International Mechanical Codes.
Supply air fans:
ISAB – Inline Supply Air Booster
ISAF – Inline Supply Air Fan
VRX – Constant Pressure Controller
V300 – Constant Pressure Control