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INSTALLATION INSTRUCTION
208/230/575
VOLT ONLY
208/230/460
VOLT ONLY
GENERAL
This instruction covers the installation, start-up and operation
of these air conditioning units. If the unit includes a heating
option, use this instruction in conjunction with the proper heat-
ing instruction.
• 530.25-N1.1 - Gas Heat Option
• 530.25-N1.9 - Electric Heat Option
These units are completely packaged, factory charged, cooling
only or cooling/heating air conditioners, primarily designed for
rooftop installation.
See Figure 1 for the internal arrangement of the unit compo-
nents. These units have semi-hermetic compressors with
blocked suction unloading for efficient full and part load opera-
tion and can be equipped with an economizer option to provide
cooling with outdoor air when the temperatures and the humid-
ity of the outdoor air permit. The unit can also be equipped with
exhaust air fans for use in conjunction with the economizer
option.
All electrical controls are located on one side of the unit and
are readily accessible for maintenance, adjustment and serv-
ice. All wiring (power and control) and piping can be made thru
the bottom or the side of the unit.
Units are available with bottom duct connections for roof
mounted installations or may be field converted for end duct
connections. Refer to Form 530.25-N1.5.
The following safety precautions apply to gas-fired units:
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. Don't touch electrical switches
3. Extinguish any open flame.
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
Installer should pay particular attention to the words: NOTE, CAUTION and WARNING . Notes are intended to clarify or make
the installation easier. Cautions are given to prevent equipment damage. Warnings are given to alert installer that personal injury
and/or equipment damage may result if installation procedure is not handled properly.
®
Supersedes: Nothing
MODELS D*SC360 & 480
FOR YOUR SAFETY
SUNLINE SERIES
SINGLE PACKAGE AIR CONDITIONERS
INSPECTION
As soon as a unit is received, it should be inspected for possible
damage during transit. If damage is evident, the extent of the
damage should be noted on the carrier's freight bill. A separate
request for inspection by the carrier's agent should be made in
writing. Refer to Form 50.15-NM for additional information.
REFERENCE
Additional information on the design, installation, operation and
service of this equipment is available in the following reference
forms:
• 55.70-N1 - General Installation
• 55.70-N2 - Pre-start & Post-start Check List
Renewal Parts:
• Refer to the Renewal Parts Manual for complete listing of
replacement parts on this equipment.
All forms referenced in this instruction may be ordered from:
Publications Distribution Center
Unitary Products Group
P.O. Box 1592, York, Pa. 17405
THIS PRO DUCT M UST BE INSTALLED IN STRICT COMPLIANCE W ITH
THE ENCLOSED INSTALLATION INSTRUCTIONS AND ANY APPLICABLE
LOCAL, STATE, AND NATIONAL CODES INCLUDING, BUT NOT LIMITED
TO, BUILDING, ELECTRICAL, AND MECHANICAL CODES.
INCORRECT INSTALLATION MAY CREATE A CONDITION WHERE THE
OPERATION OF THE PRODUCT COULD CAUSE PERSONAL INJURY
O R P R O P E R T Y D A M A G E .
530.25-N3Y (394)
035-11820
CAUTION
WARNING
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Table of Contents
Related Manuals for York D*SC360
Summary of Contents for York D*SC360
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Page 1: General
Unitary Products Group connections. Refer to Form 530.25-N1.5. P.O. Box 1592, York, Pa. 17405 The following safety precautions apply to gas-fired units: CAUTION THIS PRO DUCT M UST BE INSTALLED IN STRICT COMPLIANCE W ITH... -
Page 2: Table Of Contents
530.25-N3Y TABLE OF CONTENTS General ................1 MAINTENANCE Inspection................1 Filters ................. 24 Reference................1 Coils ................... 24 Approvals ................1 Drain Pan ................24 Nomenclature............... 2 Lubrication ................. 24 Belts ................... 24 INSTALLATION Limitations................3 TABLES Rigging................. 3 Description Page Mounting ................ -
Page 3: Installation
530.25-N3Y FIG. 1 - UNIT LESS PANELS (DSC480 SHOWN) INSTALLATION LIMITATIONS CLEARANCES These units must be installed in accordance with all national These units must be installed with the minimum clearances and local safety codes. If no local codes apply, installation must listed below. -
Page 4: Condensate Drain Connection
530.25-N3Y TABLE 1 - APPLICATION DATA MODEL DSC 200 Volts 187 / 218 230 Volts 216 / 252 Voltage Variation, Min/Max 460 Volts 432 / 504 575 Volts 540 / 630 Supply Air CFM, Min/Max 9,600 / 14,400 12,800 / 19,200 Wet Bulb Temp. -
Page 5: Bottom Power Wiring Entrance
530.25-N3Y A non-fused disconnect switch is available as a factory- 2. Units that are mounted on structural steel above the mounted option on all units. When this option is not included, a finished roof unless the steel is blocking the 4-1/2" diameter field-supplied disconnect switch should be installed in the sleeve in the base of the unit. -
Page 6: Control Wiring
530.25-N3Y CONTROL WIRING (MODEL DSC360) CONTROL WIRING (MODEL DSC480) For bottom entry (Figure 7), the control wiring should be routed: For bottom entry (Figure 8), the control wiring should be routed: 1. Up through the flexible conduit and the middle deck to the 1. -
Page 7: Control Wiring Conns. W/O Status Panel
530.25-N3Y FIG. 9 - CONTROL WIRING CONNECTIONS WITHOUT STATUS PANEL Unitary Products Group... -
Page 8: Control Wiring Conns. With Status Panel
530.25-N3Y FIG. 10 - CONTROL WIRING CONNECTIONS WITH STATUS PANEL Unitary Products Group... -
Page 9: Control Wiring Conns. Solid State Control Wiring With Status Panel
530.25-N3Y FIG. 11 - CONTROL WIRING CONNECTIONS - SOLID STATE CONTROL WITH STATUS PANEL FIG. 12 - CONTROL WIRING CONNECTIONS - SOLID STATE CONTROL WITH STATUS PANEL Unitary Products Group... -
Page 10: Electrical Data
530.25-N3Y TABLE 3 - ELECTRICAL DATA ELECTRICAL DATA (UNITS WITHOUT EXHAUST AIR FANS ) Supply Air Blower Motor Condenser Fan Motors Unit Max. Max. Compressors Min. Wire (3-Phase) (1-Phase) Ampa- Fuse Wire Size, Model city, Size, Length, Nom. Power AWG/MCM Volts Volts Volts... -
Page 11: Unit Dimensions
530.25-N3Y MINIMUM CLEARANCES FRONT Control Box Side 36" REAR LEFT SIDE Condenser Coil RIGHT SIDE Cooling Only Units 36" Electric Heat Units 36" Gas Heat Units 90" BOTTOM 0" 120" MODEL DSC DIM. 4-5/8 5-5/8 11-1/4 55-1/2 57-3/8 77-1/2 OPENING USED ON HOLE USED FOR... -
Page 12: Duct Connections
530.25-N3Y Refer to the following accessory instructions for additional is absorbed in the chamber and not transmitted to the condi- control wiring information. tioned space. The chamber may be constructed of fiberglass duct or metal duct lined with sound absorption material. Ceiling •... -
Page 13: Economizer Rain Hood Option
530.25-N3Y ECONOMIZER RAIN HOOD OPTION assembled to the unit per the assembly instructions in Form 530.25-N1.3. The outdoor and return air dampers, the spring-return damper CAUTION: Never operate the unit without installing the hood or actuator, the linkage, the enthalpy changeover control, the moisture will be drawn into the unit. -
Page 14: Heating System
530.25-N3Y NOTE: The above operation is for intermittent fan operation. 2. Turn the minimum outside air adjuster to the 0% outside air For continuous operation, the fan switch on the room position. All outside air damper blades should be fully thermostat or the status panel should be manually closed. -
Page 15: Solid State Controls
530.25-N3Y SOLID STATE CONTROLS The outdoor and return air dampers are controlled by the logic panel. The discharge sensor acts as a modulating low limit A Honeywell W973 solid state logic panel controls the which senses the temperature of the air leaving the evaporator economizer motor and stages of cooling and heating in coil. -
Page 16: Exhaust Air System
530.25-N3Y When the temperature in the conditioned space rises above 10. To maintain sufficient head pressure during low ambient the thermostats cooling set point, the thermostat sends a operation, condenser fans No. 1 and No. 2 will be modulating voltage signal to the logic panel. The thermostat de-energized by 1TH. -
Page 17: Supply Air System Adjustment
530.25-N3Y After the movable flange (or flanges) has been rotated to the The recommended deflection force is as follows: proper number of “turns open”, the set screws should be DEFLECTION FORCE (LBS.) BELT tightened against the flats on the barrel to lock the movable SECTION MINIMUM MAXIMUM... -
Page 18: Master Printed Circuit Board And Plug-In Relay Assembly
530.25-N3Y 2. Install two 1/4" O.D. tubes, one between the filters and the air entering side of the evaporator coil and one between the supply air blower(s) and the air leaving side of the evapo- rator coil. % OF NOMINAL CFM MODEL DSC360 9600... -
Page 19: Service Analyzer
530.25-N3Y SERVICE ANALYZER of the printed circuit board by squeezing the releases on The analyzer allows complete over-ride control of room the sides of the plug. Remove wire 119G from the PCB with thermostat from the units Printed Circuit Board located within solid state controls. -
Page 20: Fixed Outdoor Air Adjustment
530.25-N3Y FIG. 19 - FIXED OUTDOOR AIR ADJUSTMENT FIG. 20 - EXHAUST AIR PERFORMANCE Unitary Products Group... -
Page 21: Blower Motor And Drive Data
530.25-N3Y TABLE 9 - BLOWER MOTOR AND DRIVE DATA Motor Adjustable Motor Pulley Fixed Blower Pulley Super Belts Blower Model Pitch Pitch Pitch Service Frame Bore Bore Desig- Diameter, Diameter, Length, Qty. Range Factor Size Inches Inches nation Inches Inches Inches 780-940 1.15... -
Page 22: Resistances - Unit Options & Accessories. 21 Supply Air Blower Performance
530.25-N3Y TABLE 11 - SUPPLY AIR BLOWER PERFORMANCE MODEL DSC360 Blower 9600 10800 12000 13200 14400 0.97 4.71 4.09 0.76 5.46 4.71 0.48 6.16 5.30 1.18 5.31 4.59 1.00 6.12 5.26 0.74 6.87 5.89 0.30 7.67 6.57 1.40 5.88 5.06 1.24 6.79 5.83... -
Page 23: Start-Up
530.25-N3Y START-UP tance. The flow of electricity will normally follow the path of CRANKCASE HEATERS least resistance through the compressor contactors 1M and It is important that the crankcase heaters be energized 8 hours 2M. If, however, a low or high pressure cutout opens, the lockout relay 10R or 11R will be energized. -
Page 24: Pre-Start Check
40 lbs. 8 oz. 29 lbs. 8 oz. each system Unitary Products Group P.O. Box 1592, York, Pennsylvania USA 17405-1592 Subject to change without notice. Printed in U.S.A Copyright • by York International Corporation 1994. All Rights Reserved. 530.25-N3Y Code: SBY... - Page 25 530.25-N3Y After the unit is functioning properly, instruct the owner and operator on how to operate the unit. Replace all panels before leaving the job site. Unitary Products Group...