MANDÍK CPV Installation, commissioning, and maintenance
IZU 02/2021
MANDÍK, a.s., www.mandik.cz
R
14
6.5
CONNECTING THE UNIT TO HVAC DUCTWORK
The unit may only be connected to square ducts using flexible elements installed on every
supply / return on the unit (to prevent the transmission of vibration), or to round ducts using
round ports with gaskets that are installed on every supply / return on the unit.
The HVAC ductwork must be connected without tension, i.e. so that the weight of the
ductwork itself does not load the flexible element and the unit.
Flanged HVAC ductwork connections and flexible elements must be properly sealed.
Specification of the supply / return connections on the unit:
Fig. 1 outlets, right-hand design of CPV unit
Fig 2 outlets, left-hand design of CPV unit
6.6
CONDENSATE DRAIN TRAP CONNECTION
The condensate drain must be connected through a trap with a sufficient water column
height to ensure flawless operation.
A trap connection under vacuum must always be filled with water prior to use and after
extended shut-downs to ensure the condensate can drain freely.
Piping downstream of the trap must have an air gap and may not be directly connected to
sewerage piping.
The height of the unit above the floor / ground must be adapted to the necessary height of
the trap.
ODA
–
fresh outdoor air
ETA
–
return (exhaust) from the space
SUP
–
supply to space
EHA
–
exhaust air to atmosphere
