Wolf AHU TE - Installation of Key Components; Fan Section and Flexible Connections

19
3064058_201610
AHU TE
AHUW TE
Installationinstructions
Flexibleconnections
Remove the transportation locking devices.
Duringinstallationensurethattheconnectingangesarenomorethan100mmapart
toensurethattheexibleconnectionshavetheirfullrangeofmovement.
It may be necessary to fully insulate the exible connections on site against
acousticemissionsandcondensation.
Ensurethatthefanshaftishorizontalinitsbearings.Iftheshaftisnotperfectlyhorizontal
the ball bearing will suffer damage and service life will be substantially reduced.
Remove the transportation locking devices from fans mounted on spring-loaded vibration
dampers.
Note
Fansection
Transportation
locking devices
The heat exchangers (cooling coil, heating coil) operate on the countercurrent principle.
This means that the heat transfer medium or refrigerant moves in the opposite direction
totheairow.Consequently,theowconnectionforthemediumisalwaysontheair
discharge side of the heat exchanger.
Connect the heat exchangers so that no mechanical stresses and strains are transmitted
from the pipework to the heat exchangers.
It is also important to ensure that the transmission of vibrations and longitudinal expansion
and contraction between the air-handling unit and the pipework is effectively prevented.
Ensure that the connecting lines never obstruct access to the other parts of the unit
(fan,lter,scrubber,etc.).
For the heat exchanger (with ange) it is recommended to use bends to make the
connections.Thiscongurationwillensurethattheheatexchangerandthemisteliminator
can be extracted to one side for subsequent cleaning.
Always install steam registers so that the steam inlet is always at the top (large diameter
connector) and the condensate drain is always at the bottom.
When connecting the ow and return lines, always use a wrench of correct size to
counterhold the threaded connectors of the heat exchanger. Otherwise the mechanical
force could separate the header from the heat exchanger. Damage of this nature would
effectively ruin the heat exchanger.
It is important to ensure that facilities for venting and draining are installed on site.
Always connect a siphon to the condensate drain connector of the cooling coil drip tray
(see "Siphon").
AHUW TE: If the heat exchanger connections are on the inside, run the pipework
through the empty section provided for the purpose downstream of the heat
exchanger. Make adequate provision for venting.
Make suitable apertures through the removable base to accommodate the pipes.
Seal these apertures by suitable means after insulating the pipework.
The weatherproof projection is not thermally insulated. Consequently,thepipes
andvalvesmustbeadequatelyinsulatedand,ifnecessary,heatedonsite.
 Ifaninverterisusedforoperationitisadvisabletoprovideexternalventilation
insummertopreventoverheating(max.permissibletemperature45°C).
 Providesuitableaperturesthroughtheremovablebaseoftheprojection
toaccommodatethepipes.
Note
Note
Heatexchanger
Removable heater exchanger
Flange
Removable mist eliminator
Empty section
Flow
FlowReturn
Return
Directionofairow
Directionofairow
+