Carrier 50VZ Installation, Operation And Maintenance Instructions

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Carrier 50VZ Installation, Operation And Maintenance Instructions Manual pdf 27 page image

27Fig. 18 - Rigging (38VZ/PZ) Ductwork (indoor air discharge)The ductwork dimensions should be determined in accordancewith the air flow to be carried, and the available static pressureof the unit. The different air flows and static pressures whicheach unit can supply, are shown in the fan performance tables.It is recommended to observe the following considerations:- Whatever type of ductwork is used, it should not be madeof materials which are flammable, or which give off toxicgases in the event of a fire. The internal surfaces should besmooth, and not contaminate the air which passesthrough. It is recommended to use sheet metal ductswhich are adequately insulated to avoid condensation andthermal leakage.- At the points where the ducts join the unit, it isrecommended to use flexible connections which absorbvibrations, prevent noise inside the ductwork and allowaccess to the unit.- Bends near the unit outlet should be avoided as much aspossible. If unavoidable, they should be as slight aspossible, and internal deflectors should be used when theduct has large dimensions.NOTE: All duct sizing and design work should be carried outby qualified technicians.Condensate drainage50VZ/PZ and 38VZ/PZ unitsThe indoor unit evacuates condensate water via the condensatepan of the outdoor heat exchanger (38VZ/PZ) which incor-porates two male ø 3/4" gas drain connections, one for eachside of the unit. Depending on the installation site, either ofthese drains can be used, and the unused drain should be plugged.40PZ unitsThese units incorporate a condensate pan with a drain pipewithan outside diameter of 25 mm.The connection to the drain pipe can be vertical (Fig. 20) orhorizontal (Fig. 21).• Vertical drain: Remove the prepunched knockout(s) in theunit base.• Horizontal drain: Remove the prepunched knockout(s) inthe side of the unit base.Fig. 20 - Vertical drain (40PZ)Fig. 19 - Rigging (40PZ)IMPORTANT: The unit should be correctly levelled.Field-suppliedDrain pipe OD 25 mmDrain panUnit baseAAA