Specifications

Maxiva ULX Series
November 11, 2013
2‐9
888‐2628‐300 WARNING:Disconnectprimarypowerpriortoservicing.
Copyright©2013,HarrisBroadcast
2.7.6 PumpModule/HeatExchangerElectricalInstallation
Theelectricalinstallationofthe heatexchangerandpumpmoduleunitshouldbeinaccordancewiththeNational
ElectricalCodeandanylocalcodesandregulations.TheincomingACpoweriseither208‐240Vor380‐415V,3phase
50/60Hz.Fanandpumpmotorsarethreephase.
Warning
DISABLE AND LOCK OUT STATION PRIMARY POWER BEFORE PRIMARY POWER
CABLES ARE CONNECTED TO THE EQUIPMENT.
STEP 1 InstallconduitandrouteACmainscablingtothepumpmoduleandfromthe
pumpmodulecontrolpaneltotheheatexchangerisolatorswitches.Install
andwireaccordingtotheHarrisBroadcastExternalWiringdiagramandfollow
localwiringcodes.
STEP 2 Installanotherconduitandroutewiringforstatusandcontrollinesbetween
thepumpmoduleandtransmittercabinet.Installandwireaccord ingto
electricalschematicdiagramandlocalwiringcodes.
Caution
SMALL SIGNAL (CONTROL/STATUS) WIRES AND AC WIRING SHOULD
NEVER BE RUN IN THE SAME CONDUIT.
STEP 3 TurnOFFthecircuitbreakersonthepumpmodulecontrolpanelandthe
isolatorswitchesontheheatex changerunit.TheywillbeturnedONlaterin
theproceduretocheckforwiring problems.
STEP 4 Connectthecontrolandstatuswirestothecoolingcontrolpanelwiththe
suppliedmulti‐conductorcable.Theseconnectionsaredescribedonthe
externalwiringdiagram.Theselowlevelsignalsconnecttheterminalsinthe
pumpmodulecontrolpanel(J3orJ4)tothepumpmoduleconnectorontopof
the
transmittercabinet.
Note
The pump module connections are also shown in the HE pump module technical manual 888-2625-001
Table 2-2 on page 2-7.
Note
Condensation can occur in the conduits connecting the heat exchanger (outside) and the transmitter
(inside). These conduits should be caulked or sealed after the system is tested and operational. Sealing the
conduit prevents warm air inside the building from entering the portion of the conduit that is located out
-
side the building.
STEP 5 ConnectthecontrolandstatuswirestoconnectorJ1onthecustomerI/O
panel(locate datthetopofthetransmitter)withthesuppliedmulti‐
conductorcable.Theselowlevelsignalsconnectfromterminalsinsidethe
pumpmodulecontrolpanel(J3orJ4)toJ1‐1throughJ1‐12(see
Figure2‐1),on
theconnectorlabelledpumpmoduleonthecustomerI/Opanelontopofthe
transmitter.