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SUNLINE 2000
ELECTRIC / ELECTRIC & GAS / ELECTRIC
SINGLE PACKAGE AIR CONDITIONERS
(Constant Air Volume)
Supersedes: 530.18-N11Y (195) 530.18-N11Y (399)
INSTALLATION INSTRUCTION
035-16133
MODELS D2CE & D2CG300
(8.5 EER)
208/230/575
208/230/460
VOLT ONLY
VOLT ONLY
DCG MODEL
SHOWN
SAFETY CONSIDERATIONS INSPECTION
Due to system pressure, moving parts and electrical components, As soon as a unit is received, it should be inspected for
installation and servicing of air conditioning equipment can
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530.18-N11Y TABLE OF CONTENTS General ................................................................................ 1 MAINTENANCE & TROUBLESHOOTING Inspection............................................................................. 1 Normal Maintenance ......................................................... 20 Reference............................................................................. 1 Cleaning Flue Passages and Heating Elements ............... 20 Approvals .................
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530.18-N11Y INSTALLATION CAUTION: If a unit is to be installed on a roof curb or special LIMITATIONS frame, gasketing must be applied to all surfaces These units must be installed in accordance with the following that come in contact with the unit underside. applicable national and local safety codes: In U.S.A.: 1. National Electrical Code ANSI/NFPA No. 70. 5. Maintain level tolerance to 1/2" maximum across the entire length or width of the unit. 2. National Fuel Gas Code Z223.1. RIGGING AND HAN
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530.18-N11Y DUCTWORK Ductwork should be designed and sized according to the methods in Manual Q of the Air Conditioning Contractors of America (ACCA). A closed return duct system shall be used. This shall not preclude use of economizers or outdoor fresh air intake. The supply and return air duct connections at the unit should be made with flexible joints to minimize noise. The supply and return air duct systems should be designed for the CFM and static requirements of the job. They should NOT be
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530.18-N11Y CONTROL WIRE SIZES 1 Wire Size AWG. Gauge 22 20 19 18 16 25 40 50 65 100 2 Maximum Wire Length Feet Notes: 1. Solid, Class II copper wire FIG. 5 - TYPICAL FIELD WIRING Unitary Products Group 5
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530.18-N11Y THERMOSTAT COMBUSTION DISCHARGE (DCG Models) The room thermostat should be located on an inside wall The products of combustion are discharged horizontally approximately 56" above the floor where it will not be subject through two screened (hooded) openings on the upper gas to drafts, sun exposure or heat from electrical fixtures or heat access panel. appliances. Follow manufacturer’s instructions enclosed with thermostat for general installation procedure. Seven color coded insulate
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530.18-N11Y L.P. UNITS, TANKS AND PIPING (DCG Models) All gas heat units are shipped from the factory equipped for natural gas use only. The unit may be converted in the field for use with L.P./propane gas with accessory kit model number 1NP0418. All L.P./propane gas equipment must conform to the safety standards of the National Fire Protection Association. For satisfactory operation, L.P./propane gas pressure must be 8.8 inch W.C at the unit under full load. Maintaining proper gas pressure depe
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530.18-N11Y VENT AND COMBUSTION AIR HOODS OPTIONAL ECONOMIZER/MOTORIZED DAMPER RAIN HOOD (DCG Models) The instruction for the optional economizer/motorized damper Two vent hoods and a combustion air hood (with screens) are rain hood can be found in form 44-320-2. Use these instructions shipped attached to the blower housing in the blower when field assembling an economizer rain hood onto a unit. The outdoor and return air dampers, the damper actuator, the compartment. These hoods must be install
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530.18-N11Y FIG. 9 - ENTHALPY SETPOINT ADJUSTMENT Unitary Products Group 9
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530.18-N11Y TABLE 4 - PHYSICAL DATA DCE/DCG OPERATING WEIGHTS (LBS.) 25 TON MODELS 300 DCE (Cooling only) 2730 CENTRIFUGAL BLOWER (Dia. x Wd. in.) 18 x 15 DCG N240 2930 EVAPORATOR Basic Unit (Gas / BLOWER FAN MOTOR HP 15 N320 2970 Electric) ROWS DEEP 4 EVAPORATOR Economizer 160 FINS PER INCH 13.5 COIL Economizer with FACE AREA (Sq. Ft.) 25.0 245 Power Exhaust PROPELLER DIA. (in.) (Each) 30 CONDENSER Motorized Damper 150 FAN FAN MOTOR HP (Each) 1 Options 18 KW 25 (Two Per Unit) N
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530.18-N11Y : 3 : $ 9 ; 2 9. . . All dimensions are in inches. They are sub-
! ' "+ 4 4 ject to change without notice. Certified di-
! ' "+ 4 9 4 mensions will be provided upon request.
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530.18-N11Y CONDENSER EVAPORATOR SECTION SECTION GAUGE LINE DUCT COVERS - Units are shipped with the bottom ACCESS duct openings covered. An accessory flange kit is avail- able for connecting side ducts. DOT PLUG For bottom duct applications: (For pressure 40-3/8" 1. Remove the side panels from the supply and return drop reading) air compartments to gain access to the bottom FILTER supply and return air duct covers. ACCESS 2. Remove and discard the bottom duct covers. (Duct SUPPLY op
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530.18-N11Y 4 # #
#
4 POINT LOADS 6 POINT LOADS 4 FIG. 11- FOUR AND SIX POINT LOADS TABLE 7 - FOUR AND SIX POINT LOADS 4 - POINT LOADS (LBS) UNIT TOTAL A B C D 300 3,130 615 671 962 882 NOTE: These weights are with economizer, high heat, and the largest blower motor available. 6 - POINT LOADS (LBS) UNIT TOTAL A B C D E F 300 3,130 418 438 533 628 603 510 NOTE: These weights are with economizer, high heat, and the largest blower motor available. TABLE 8 - SUPPLY AIR BLOWER
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530.18-N11Y TABLE 9 - SUPPLY AIR BLOWER PERFORMANCE DCG300-BOTTOM DUCT CONNECTIONS(COOLING APPLICATIONS) BLOWER PULLEY 7500 CFM 8750 CFM 10000 CFM 11250 CFM 12500 CFM SPEED TURNS ESP OUTPUT INPUT ESP OUTPUT INPUT ESP OUTPUT INPUT ESP OUTPUT INPUT ESP OUTPUT INPUT (rpm) OPEN: (iwg) (bhp) (kW) (iwg) (bhp) (kW) (iwg) (bhp) (kW) (iwg) (bhp) (kW) (iwg) (bhp) (kW) STANDARD DRIVE: 975 6.0 1.2 5.9 4.9 0.5 7.3 6.0 - - - - - - - - - 1005 5.0 1.4 6.2 5.1 0.7 7.7 6.3 - - - - - - - - - 1040 4.0 1.6 6.6 5.4 0
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530.18-N11Y OPERATION addition. The power exhaust motor is energized whenever the COOLING SYSTEM economizer is chosen by the enthalpy sensor for first stage The cooling section is a complete factory package utilizing an cooling, “Y1". As always, the ”R" to “G” connection provides air-cooled condenser. The system is factory-charged with minimum position but does not provide power exhaust Refrigerant-22. operation. The compressors are hermetically sealed, internally sprung MOTORIZED OUTDOOR AIR DA
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530.18-N11Y switch is in the “AUTO” position, the blower will operate only At the same time power was supplied to the “RW1”, a parallel when there is a call for heating by the thermostat. circuit activates “ETD” which closes the “ETD” contact after approximately 35 seconds and energizes “K5" which closes b) Upon a call for first-stage heat by the thermostat, the heater ”K5-2" and starts the blower by energizing “3M”. contactor (6M) (6M & 7M on 72 KW, 240V) will be When “TH2" closes, heat relay ”
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530.18-N11Y TABLE 10 - LIMIT CONTROL SETTING Capacity, MBH Limit Control
Opens, °F Input Output 300 240 195 400 320 195 HEAT ANTICIPATOR SETPOINTS It is important that the anticipator setpoint be correct. Too high of a setting will result in longer heat cycles and a greater temperature swing in the conditioned space. Reducing the value below the correct setpoint will give shorter “ON” cycles and may
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530.18-N11Y Reverse the above procedure to replace the assemblies. Make sure that burners are level and seat at the rear of the heat
exchanger.
BURNER AIR SHUTTER ADJUSTMENT Adjust burner shutters so no yellow flame is observed in the heat exchanger tubes. CHECKING SUPPLY AIR CFM
The RPM of the supply air blower will depend on the required CFM,
the unit accessories or options and the static resist
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530.18-N11Y 2. Insert at least 8" of 1/4 inch tubing into each of these holes NOTE: DE-ENERGIZE THE COMPRESSORS BEFORE TAKING ANY TEST for sufficient penetration into the air flow on both sides of MEASUREMENTS TO ASSURE A DRY INDOOR COIL. the indoor coil. ADJUSTMENT OF TEMPERATURE RISE NOTE: The tubes must be inserted and held in a position The temperature rise (or temperature difference between the perpendicular to the air flow so that velocity pres- return air and the heated air from the furna
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530.18-N11Y MAINTENANCE If the actual input is not within 5% of the furnace rating (with GAS HEATING UNITS allowance being made for the permissible range of the regulator BURNER & PILOT - Periodically (at least annually at the setting), replace the orifice spuds with spuds of the proper size. beginning of each heating season) make a visual check of the pilot and main burner flame. If necessary, adjust main burner NOTE To find the Btu input, multiply the number of cubic feet of primary air shutte
