McQuay PLH048 Installation Manual
Installation Instructions For
CENTRIFUGAL WATER CHILLERS
LESS CONDENSERS
Models
13600 Industrial Park Blvd., P 0. Box 1551,
PLH
046,
079,
Minneapolis
048,
087,
MN 55440
050,
100
063
GENERAL
The less condenser chiller unit is partially factory assembled, wired and checked. Installation (by others) will require piping, power, and control interlock connections to the
machine. Factory mounted and wired compressor motor
starters are available as an optional accessory. All units are
shipped with a holding charge of refrigerant.
All rigging, installation, power and control wiring and refrigerant piping are the responsibility of the installer. Recommendations for the installation of the less condenser unit are provided in the paragraphs following.
IMPORTANT: The responsibility and/or duties of the
installer and McQuay at the time of startup are detailed in the startup section on page 11. It is important
that the installer be aware of the limits of this responsibility since McQuay startup services beyond these
limits will only be performed after written authorization
has been obtained from the owner and/or installer.
Do not under any circumstance make final power
connections to the unit mounted starter (when supplied)
or to the compressor terminals when a remote starter
is used. The compressor cannot be put in operation until the the McQuay service technician has checked the
unit installation and electrical phase sequence for proper compressor rotation.
McQuay equipment when applied to perform the duty for
which it has been designed, and when it is operated within
limits of the design specifications, will provide safe and dependable service.
CAUTION
DO NOT ABUSE THE EQUIPMENT.
MODEL NOMENCLATURE
PLH -
0635 - AE - 30R I E2212 - GB - 2RA
Nomenclature Change: The 2-letter model code
new code for PE chillers less condenser
IO12
(“L”
at the end of
“PL”
is a
the old model number signified less condenser). The letter
“H”
has been added behind the first two digits of the model
code to signify a hermetic compressor motor. Model PLH is
synonymous with model PE-L.
UNIT NAMEPLATE
Whenever requesting information or assistance on the model
PLH water chilling unit, the unit model number, shop order
number and serial number should be copied from the unit
nameplate. A reproduction of this nameplate is shown in
Figure 3.
Figure 3. Unit Nameplate
Do not step on any piping or climb over the machine.
Do not exceed test pressures. Be sure to verify
allowable test pressure for the McQuay unit and
other items in the piping system.
Be sure all pressure relief devices are correctly installed. When vent piping to the outside is utilized,
be sure piping has a flexible connection and a drain
to prevent buildup of rain water or condensate. See
Figure 7.
Do not use oxygen to purge or apply pressure to a
unit or system for any reason.
RECEIVING THE EQUIPMENT
1. CHECK EQUIPMENT before removing it from the ship-
ping vehicle. The unit nameplate contains the unit model
number, serial number, etc. Figure 3 indicates the infor-
mation
contained on the nameplate. Check the nameplate
data against shipping papers and job information. Pay
careful attention to voltage characteristics. (Check voltage
on compressor nameplate.)
HOLDING
CHARGE
ONLY
MODEL
STYLE
SERIAL
S.O. NO.
\
I
PLH~J
1
PE5210-GO1
5NAl23~500 ~~
PE-5210
FACTORY CHARGED
_
LBS. REFRIGERANT=
LEAK TEST PRESSURE
MOTOR - COMPRESSOR CONTROLLER
AND OVERLOAD PROTECTION FIELD
SUPPLIED. SEE SPEC. PE-D4
19SP1Wi01-A MADE IN U.S.A.
100 PSIG.
2. INSPECT the unit while it is still on the shipping vehicle,
record any damage and note whether or not unit has been
torn from the shipping skid. In the event that the unit has
lost the refrigerant holding charge, look for damage to
refrigerant lines and connections. See testing and
evacuation section on page 9. Have all damage checked by the
transportation inspector or their representative before
Page 4
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IM 310
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