York CS2000 Owner's manual

INSTALLATION, OPERATION & MAINTENANCE
CS2000 BELT DRIVE
AIR HANDLING UNITS
NewRelease Form115.27-NOM1(200)
TABLE OF CONTENTS
PRE-STARTUP
Receiving and Inspecting............................................................................ 2
Unit Rigging and Placement........................................................................ 2
Clearance..................................................................................................... 2
Pre-start up Check ....................................................................................... 2
INSTALLATION
Thru-Rod Connection (Figure 1) ................................................................. 3
Thru-Rod Connection / Base Rail (Figure2)................................................ 3
ExternalRods/BaseRail (Figure 3) ............................................................ 3
FieldWiring ................................................................................................. 4
Belt Tensioning ........................................................................................... 4
Belt Deflection Force (Table 1) .................................................................... 5
Replacement Parts ....................................................................................... 5
Piping .......................................................................................................... 5
Condensate Drain and Traps (See Figures 5A – 5E) .................................. 6
MAINTENANCE
BearingRe-lubrication................................................................................. 7
General Maintenance (Table 2) ................................................................... 7
Set Screw Tightening (Table 3) ................................................................... 7
00297VIP
00298VIP

YORKINTERNATIONAL
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PRE START-UP
Improper installation, adjustment,
alterations, service or maintenance
can cause injury and property dam-
age,aswell as possible voidingoffac-
tory warranty. For assistance or ad-
ditional information, consult a quali-
fied contractor.
RECEIVINGANDINSPECTING
• Thoroughly examine the exterior and interior of all
units for transportation damage to the cabinet, pip-
ing, blower(s), motor(s), coil(s), electric heat and
electrical components. Interior damage may occur,
even with no visible exterior damage. If damage is
found,immediatelyfileaclaimwith the carrier.Note
the damage on the bill of lading before signing for
the shipment.
• Checkthe bill of lading forverification thatall items
shown (including loose items) have been received.
Notify the manufacturer’s representative of any
shortages or items shipped in error.
UNITRIGGING AND PLACEMENT
• Install ductwork to comply with ASHRAE Funda-
mentals Handbook, SMACNA, NFPA 90A and
local code.
• The installation must conform with local building
codes and the NATIONAL ELECTRIC CODE.
• Locateunitsupport in accordance with the mechani-
cal and structural plans. If so equipped, locate the
isolator placement and correct size as shown on
the submittal drawing.
• Ceiling suspension of horizontal units have factory
provisions for thru bolt hanger rods, except double
wallunits (which require externalrigging) (SeeFig-
ures 1, 2 and 3). If floor mount isolators are re-
quired for either horizontal or vertical units, then
factory or field provisions must be made for isola-
tor attachment. Vertical units can be mounted di-
rectly to the floor or on a base rail. If a base rail is
provided,isolatorscan be installed in mountingholes
provided on this base rail.
• Do not handle the unit using coil stubout connec-
tors, as damage may occur at brazed joint(s).
CLEARANCE
• Allunits,includingthosewithelectric heat, are listed
for zero clearance to combustibles.
• Sufficient clearance for normal servicing of this
equipment is recommended.
• All electrical panels must have 36" working space
in front of panel to meet NATIONAL ELECTRI-
CAL CODE; however, local inspectors may wave
this requirement if the hinged cover has a 90° free
swing.
PRE-STARTUPCHECK
• Prior to starting the unit, check torque of all set
screws on the fan(s), sheaves and bearings where
applicable.
Set screws may loosen during transportation. See
Table 3.
• Sheaves must be in line. Use a straight edge to
verify.

FORM115.27-NOM1
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YORKINTERNATIONAL
FIG.1 – HORIZONTALUNIT (ALL SIZES)WITHTHRURODCONNECTION
It is critical to the installation of the AHU unit that the mechanical fastener used form a
“mechanical lock” so that it is incapable of backing off due to vibration. Serious injury
and/or property damage may occur if not properly addressed.
FIG. 2 – TYPICALUNITS WITHFACTORYINSTALLEDBASE RAIL.
SUSPENSIONWILLSTILL BETHROUGHUNIT HOLES PROVIDED.
FIG. 3 – DOUBLE WALLUNIT WITH BASERAIL.
NOTETHATSUSPENSION RODS AREEXTERNALTOTHEUNIT CASING.
INSTALLATION
LD05366
LD05367
LD05368

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FIELD WIRING
Prior to installing any wiring, check
the unit name plate for main power
voltage, control voltage, transformer
sizing and any fuse sizing. All field
wiring must comply with National
Electric Code and local code require-
ments.
• Tighten all wiring lugs and terminals prior to con-
necting power to the unit, as they may loosen dur-
ing transportation.
• Route the power lines to the power distribution ter-
minals inside the control enclosure. If a factory
wired disconnect switch is installed, then connect
the power lines to the line side of the switch.
• Mount and wire any field installed items as indi-
catedon the factory suppliedwiring diagram. When
mountingfield installed components,donot jumper
out or rewire any factory wiring without written
approvalfrom York International. Violationwillvoid
warranty.
BELT TENSIONING
For safety, please turn off all power
before checking belt tension.
• General belt tension rules for V-Belt drives:
- Ideal tension is the lowest tension at which the
belt will not slip under peak load conditions.
- Check tension frequently during the first 24-48
hours of operation.
- Over tensioning shortens belt and bearing life.
- Keep belts free from foreign material which may
cause slip.
- Make V-Belt inspection on a periodic basis. Ten-
sion when slipping. Never apply belt dressing, as
this will damage the belt and cause early failure.
LD05369
FIG. 4 – BELT TENSION

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TABLE 1 – DEFLECTIONFORCE -LBS.
REPLACEMENTPARTS
• Replacement parts may be ordered from the
YORK Airside Parts Center. Factory replacement
parts should be used wherever possible to maintain
agency listings. Should replacement parts not be
purchased from the factory, use only parts dupli-
cating the exact type, size, voltage and other oper-
ating characteristics of the original part. Any sub-
stitutionsand/or modifications not authorized bythe
factory will void the unit warranty and could result
in personal injury and/or property damage.
Whenorderingparts, the following information must
be supplied to ensure proper part identification:
1. Unit model number
2. Unit serial number
3. Complete parts description, including any
identificationnumbers
PIPING
• All piping must comply with applicable state and
local codes.
• On water coils, the piping must be in a counterflow
configuration; water inlet on the leaving air side of
the coil and at the bottom of the coil to provide the
necessary purging of air.
• Allwater piping shouldbe designed and installedto
meet the job requirements.
• Whereapplicable, freeze protectionshould be used.
• Supplyandreturn water piping should besupported.
Do not suspend piping, controls, and/or shutoff
valves from coil headers.
• All refrigerant piping (split systems) should be de-
signed and installed in accordance with ARI and
ASHRAE. Leak testing should be performed be-
fore any startup procedures are initiated. On re-
frigeration systems, follow recommended system
evacuation from the condenser unit manufacturer.
BELTDEFLECTIONFORCE
BELT SMALLEST SUPERGRIPBELTSAND GRIPNOTCH BELTSAND
TYPE SHEAVE RPM UNNOTCHEDGRIPBANDS NOTCHEDGRIPBANDS
DIAMETER RANGE
RANGE NEWBELT NEWBELT
3.0 – 3.6" 1000 – 2500 5.5 6.1
2501 – 4000 4.2 5.0
A,AX 3.8 – 4.8" 1000 – 2500 6.8 7.4
2501 – 4000 5.7 6.4
5.0 – 7.0" 1000 – 2500 8.0 9.4
2501 – 4000 7.0 7.6
3.4 – 4.2" 860 – 2500 N/A 7.2
2501 – 4000 N/A 6.2
B,BX 4.4 – 5.6" 860 – 2500 7.9 10.5
2501 – 4000 6.7 9.1
5.8 – 8.6" 860 – 2500 9.4 12.6
2501 – 4000 8.9 10.9

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FIG. 5A –TRAP DETAIL FORNEGATIVE CABINET
STATICPRESSURE FIG. 5B –TRAPDETAILFORPOSITIVE CABINET STATICPRESSURE
FIG. 5C –NO BASE RAIL
Housekeepingpad
requiredto accommo-
datetrap height
FIG. 5D –WITH BASERAIL
Dependingon static
pressure,housekeeping
padmaynot be needed.
FIG. 5E – WITHBASE RAIL
Andhousekeeping pad.
LD05370 LD05371
LD05372 LD05373 LD05374
CONDENSATEDRAIN ANDTRAPS
• Drain lines should be at least the same size as the
drain pan connection. Properly sized traps should
be used to allow the condensate from the coils to
drain from the drain pan. See Figs. 5A - 5E below.

FORM115.27-NOM1
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YORKINTERNATIONAL
MAINTENANCE
BEARINGRELUBRICATION
Frequency of bearing relubrication depends upon the
operating conditions. The proper amount of lubricant in
the bearings is very important. Both excessive and in-
adequate lubrication may cause failure. The bearings
should be relubricated while they are rotating (if it is
safe to do so); the grease should be pumped in slowly
until a slight bead forms around the seals. It is solely
the owner’s responsibility for maintaining a proper lu-
brication schedule. Failure to do so may cause substan-
tial unit damage and voiding of the factory warranty.
Note that only those bearings equipped with a grease
fitting can be relubricated.
SETSCREWDIAMETER MINIMUMRECOMMENDEDTORQUE
INCHLBS. FOOTLBS.
#10 28 2.3
1/4 66 5.5
5/16 126 10.5
3/8 228 19.0
7/16 348 29.0
1/2 504 42.0
5/8 1104 92.0
MAINTENANCETO EVERY3MONTHS
BEPERFORMED OF OPERATION(MINIMUM) ANNUALLY
Grease FanBearingsX
Inspect&CleanBlower Wheel X
LubricateFanMotor Per Motor Manufacturer
(if applicable)
Check BeltTensionX
Check Electrical Connections X
Check Bearings,Drives &X
Blower Wheel for Tightness
NOTE: Normal operationisbasedon8hoursaday.If unit runs more than this,adjustaccordingly.Thetable aboveisageneric guide
intendedfor standardequipment usedincommonsituations.
TABLE 2 – GENERAL MAINTENANCE
TABLE 3 – SET SCREW TIGHTENING

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P.O. Box1592,York,PennsylvaniaUSA17405-1592 Subjecttochangewithoutnotice.PrintedinUSA
Copyright©by YorkInternationalCorporation2000 ALLRIGHTSRESERVED
Form115.27-NOM1(200)
NewRelease
This manual is not intended to supplant regulations
or local codes having jurisdiction. It is recommended
that these items be reviewed and completed prior to
initiating equipment start-up.