VAV Terminal TDF Connection – ______ _______ _______ ______ ______
Variable Air Volume (VAV) Terminals shall be Holyoake Model HCV Single Duct VAV Terminals shall be constructed from galvanised steel casing with 25mm acoustic high density polyester insulation. Each VAV Terminal shall incorporate a low leakage HCD-75 airfoil blade aluminium control damper with self inflating blade edge seals and flexible aluminium side seals. Damper shafts shall be 11mm hexagonal pivoted in two piece acetal self lubricating bearings. VAV Inlet connection shall be either square or round and sized with an inlet velocity of not greater than 10m/s. The combined leakage of the closed damper and high pressure casing shall not exceed 2% of maximum rated flow at 750 Pa inlet static pressure. VAV Terminals shall be furnished with flow averaging pressure differential velocity sensor of the PDI type as manufactured by Holyoake.