York SUNLINE MagnaDRY DR180 Installation Manual
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York SUNLINE MagnaDRY DR180 Installation Manual

York SUNLINE MagnaDRY DR180 Installation Manual

Gas/electric single package air conditioners
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INSTALLATION
MANUAL

CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . .4
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . . .6
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
START-UP (COOLING) . . . . . . . . . . . . . . . . . . . . . . . . .63
START-UP (GAS HEAT) . . . . . . . . . . . . . . . . . . . . . . . .64
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .66
See the following pages for a complete Table of Con-
tents.
NOTES, CAUTIONS AND WARNINGS
The 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 dam-
age may result if installation procedure is not handled
properly.
CAUTION: READ ALL SAFETY GUIDES BEFORE
YOU BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
SUNLINE MagnaDRY™
GAS/ELECTRIC SINGLE PACKAGE
AIR CONDITIONERS
MODELS: DR180, 240 & 300
127915-YIM-A-0405

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Summary of Contents for York SUNLINE MagnaDRY DR180

  • Page 1: Contents

    CONTENTS MODELS: DR180, 240 & 300 GENERAL ........4 SAFETY CONSIDERATIONS .

  • Page 2: Table Of Contents

    127915-YIM-A-0405 TABLE OF CONTENTS CONTENTS ........1 ECONOMIZER (SINGLE OR DUAL) WITH POWER EXHAUST.
  • Page 3 17 BELT ADJUSTMENT ......52 15 DR180 BLOWER PERFORMANCE - STANDARD DRIVE (COOLING ONLY) ... . .40...

  • Page 4: General

    127915-YIM-A-0405 GENERAL FIRE OR EXPLOSION HAZARD YORK Model DR units are either single package cool- ing units equipped with optional factory installed elec- Failure to follow safety warnings exactly could tric heaters, or single package gas-fired central heating result in serious injury, death, or property dam- furnaces with cooling unit.

  • Page 5: Renewal Parts

    • 035-08524-002 - High Altitude Accessory (Pro- electrical, and mechanical codes. pane) RENEWAL PARTS Refer to York USER'S MAINTENANCE and SERVICE INFORMATION MANUAL Part Number 035-19699- 001. Improper installation may create a condition APPROVALS where the operation of the product could cause personal injury or property damage.

  • Page 6: Product Nomenclature

    127915-YIM-A-0405 PRODUCT NOMENCLATURE Unitary Products Group...
  • Page 7 127915-YIM-A-0405 PRODUCT NOMENCLATURE - CONTINUED 15-25T Sunline Magna DRY™ Model Number Nomenclature Additional Options - Standard Cabinet None Phase Monitor Coil Guard Dirty Filter Switch Phase Monitor & Coil Guard Phase Monitor & Dirty Filter Switch Coil Guard & Dirty Filter Switch Phase Monitor, Coil Guard, &...
  • Page 8 127915-YIM-A-0405 Additional Options - Standard Cabinet CPC Controller, DFS, APS, Double Wall, SS Drain Pan, Phase Monitor, & Coil Guard CPC Controller, DFS, APS, Double Wall, SS Drain Pan, & Technicoat Cond Coils CPC Controller, DFS, APS, Double Wall, SS Drain Pan, & Technicoat Evap Coil CPC Controller, DFS, APS, Double Wall, SS Drain Pan, &...
  • Page 9 127915-YIM-A-0405 Additional Options - Standard Cabinet Honeywell Excel 10 Controller, DFS, APS, SS Drain Pan, & Technicoat Cond Coils Honeywell Excel 10 Controller, DFS, APS, SS Drain Pan, & Technicoat Evap Coil HW Honeywell Excel 10 Controller, DFS, APS, SS Drain Pan, & Technicoat Evap and Cond Coils Honeywell Excel 10 Controller, DFS, APS, SS Drain Pan, Phase Monitor, Coil Guard, &...
  • Page 10 127915-YIM-A-0405 Additional Options - Standard Cabinet Technicoat Evaporator Coil Technicoat Evaporator Coil & Phase Monitor Technicoat Evaporator Coil & Coil Guard Technicoat Evaporator Coil & Dirty Filter Switch Technicoat Evaporator Coil, Phase Monitor, & Coil Guard Technicoat Evaporator Coil, Phase Monitor, & Dirty Filter Switch Technicoat Evaporator Coil, Coil Guard, &...
  • Page 11 127915-YIM-A-0405 Additional Options - Standard Cabinet Simplicity Intelli-Comfort Controller, Double Wall, SS Drain Pan, & Technicoat Evap Coil Simplicity Intelli-Comfort Controller, Double Wall, SS Drain Pan, & Technicoat Evap and Cond Coils Simplicity Intelli-Comfort Controller, Double Wall, SS Drain Pan, Phase Monitor, Coil Guard, & Technicoat Evap and Cond Coils WA Intelli-Comfort w/ModLINC Controller WB Intelli-Comfort w/ModLINC Controller, &...
  • Page 12 127915-YIM-A-0405 Additional Options - Hinged Filter Door & Toolless Access Cabinet Double Wall & Coil Guard Double Wall & Phase Monitor, Dirty Filter Switch & Coil Guard Double Wall & SS Drain Pan BW Double Wall & SS Drain Pan & Phase Monitor Double Wall &...
  • Page 13 127915-YIM-A-0405 Additional Options - Hinged Filter Door & Toolless Access Cabinet Johnson UNT Controller, DFS, APS & Technicoat Evap. & Cond Coils, Hinged Filter Door & Toolless Access Panels Johnson UNT Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor, Hinged Filter Door & Toolless Access Panels Johnson UNT Controller, DFS, APS, Technicoat Evap.
  • Page 14 127915-YIM-A-0405 Additional Options - Hinged Filter Door & Toolless Access Cabinet Honeywell Excel 10 Controller, DFS, APS, Double Wall, SS Drain Pan, & Technicoat Cond Coils Honeywell Excel 10 Controller, DFS, APS, Double Wall, SS Drain Pan, & Technicoat Evap Coil Honeywell Excel 10 Controller, DFS, APS, Double Wall, SS Drain Pan, &...
  • Page 15 127915-YIM-A-0405 Additional Options - Hinged Filter Door & Toolless Access Cabinet Technicoat Evaporator & Condenser Coils & Phase Monitor, Hinged Filter Door & Toolless Access Panels Technicoat Evaporator & Condenser Coils & Coil Guard, Hinged Filter Door & Toolless Access Panels Technicoat Evaporator &...
  • Page 16 127915-YIM-A-0405 Additional Options - Hinged Filter Door & Toolless Access Cabinet Intelli-Comfort w/ModLINC Controller, Hinged Filter Door & Toolless Access Panels Intelli-Comfort w/ModLINC Controller, & Phase Monitor, Hinged Filter Door & Toolless Access Panels Intelli-Comfort w/ModLINC Controller, & Coil Guard, Hinged Filter Door & Toolless Access Panels Intelli-Comfort w/ModLINC Controller, Phase Monitor, &...

  • Page 17: Installation

    4. Always install furnace to operate within the fur- TABLE 1: UNIT APPLICATION DATA nace's intended temperature-rise range with the UNIT MODEL NUMBER DR180 DR240 DR300 duct system and within the allowable external static pressure range, as specified on the unit name/rat-...

  • Page 18: Rigging And Handling

    If a unit is to be installed on a roof curb or special frame other than a YORK roof curb, gasketing must be applied to all surfaces that come in contact with the unit underside.

  • Page 19: Ductwork

    127915-YIM-A-0405 DUCTWORK provide variable amounts of outdoor air intake on units that are not provided with an economizer or a motor- Ductwork should be designed and sized according to ized damper option. Refer to the Fixed Outdoor the methods in Manual Q of the Air Conditioning Con- Damper Figure 3.

  • Page 20: Condensate Drain

    127915-YIM-A-0405 COMPRESSORS Units are shipped with compressor mountings factory- adjusted and ready for operation. Do not loosen compressor mounting bolts. FILTERS Two-inch filters are supplied with each unit, but units can be converted easily to four-inch filters. Filters must always be installed ahead of the evaporator coil and must be kept clean or replaced with same size and type.

  • Page 21: Typical Field Wiring

    127915-YIM-A-0405 THERMOSTAT ( RCB ) TERMINALS REHEAT CONTROL BOARD TERMINAL BLOCK DEHUMIDISTAT TO REMOTE SENSOR 2ET04701324 IF USED Electronic programmable Thermostat 2ET0770010024 ( includes subbase). Terminals A1 and A2 provide a relay output to close the outdoor economizer dampers when the thermostat switches to the set-back position.

  • Page 22: Thermostat

    127915-YIM-A-0405 THERMOSTAT Refer to the Typical Field Wiring Figure 5 and to the appropriate unit wiring diagram for control circuit and The room thermostat should be located on an inside power wiring information. wall approximately 56 inches above the floor where it will not be subject to drafts, sun exposure or heat from TABLE 2: CONTROL WIRE SIZES electrical fixtures or appliances.

  • Page 23: Gas Piping

    127915-YIM-A-0405 TABLE 4: GAS HEAT APPLICATION DATA Output Capacity (Mbh) 0 To 2,000 To Temp. 0 To 2,000 To Natural 2,000 Feet 4,500 Feet Rise ºF 2,000 Feet 4,500 Feet Available Above Above Above Above on Models Rate Sea Level Sea Level Full Input Sea Level...

  • Page 24: L.p. Units, Tanks And Piping

    127915-YIM-A-0405 7. A 1/8 inch NPT plugged tap, accessible for test gage connection, must be installed immediately upstream of the gas supply connection to the fur- nace. Natural gas may contain some propane. Pro- pane, being an excellent solvent, will quickly dissolve white lead or most standard commer- cial compounds.

  • Page 25: Vent And Combustion Air Hoods

    127915-YIM-A-0405 1. The vaporization rate depends on (a) the tempera- hood to the panel. The top flange of this hood slips in ture of the liquid and (b) the "wetted surface" area under the top of the access panel opening when install- of the container or containers.

  • Page 26: Optional Power Exhaust/Barometric Relief Damper And Rain Hood

    127915-YIM-A-0405 OPTIONAL POWER EXHAUST/BAROMETRIC RELIEF • For a single enthalpy operation carefully turn the DAMPER AND RAIN HOOD setpoint adjusting screw (found on the damper control module) to the "A", "B", "C" or "D" setting The instructions for the power exhaust/barometric relief corresponding to the lettered curve of the Enthalpy damper and rain hood can be found in form 035- Setpoint Adjustment Figure 9.

  • Page 27: Enthalpy Setpoint Adjustment

    127915-YIM-A-0405 CONTROL POINT CONTROL APPROX. CURVE (29) (32) (35) (38) (41) (43) AT 50% RH 73 (23) 70 (21) (27) 67 (19) 63 (17) (24) (21) (18) (16) (13) (10) (10) (13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43)

  • Page 28: Four And Six Point Loads

    127915-YIM-A-0405 TABLE 6: FOUR AND SIX POINT LOADS 4 Point Loads (lbs) Operating Unit Size Weight 180 Gas 2850 240 Gas 3150 1026 1026 300 Gas 3250 1058 1058 180 Elec 2650 240 Elec 2950 300 Elec 3050 6 Point Loads (lbs) Operating Unit Size Weight...

  • Page 29: Physical Data

    127915-YIM-A-0405 TABLE 7: PHYSICAL DATA MODELS DR 180 DR 240 DR 300 CENTRIFUGAL BLOWER (Dia. x Wd.) 15x15 18x15 EVAPORATOR BLOWER FAN MOTOR HP 5/7.5 7.5/10 15.0 ROWS DEEP EVAPORATOR FINS PER INCH 13.5 COIL FACE AREA (Sq. Ft.) 20.52 PROPELLER DIA.

  • Page 30: Dr Electrical Data - Standard Drive Motor W/O Powered Convenience Outlet

    127915-YIM-A-0405 TABLE 8: DR ELECTRICAL DATA - STANDARD DRIVE MOTOR W/O POWERED CONVENIENCE OUTLET COMPRESSORS HEATER OPTION MAX. FUSE/ MIN. OD FAN CONV MODEL BLOWER CIRCUIT BRKR VOLTAGE MOTORS OUTLET TONNAGE MOTOR AMPACITY MODEL STAGES AMPS SIZE FLA EACH AMPS EACH EACH (AMPS)

  • Page 31: Dr Electrical Data - High Static Drive Motor W/O Powered Convenience Outlet

    127915-YIM-A-0405 TABLE 9: DR ELECTRICAL DATA - HIGH STATIC DRIVE MOTOR W/O POWERED CONVENIENCE OUTLET COMPRESSORS HEATER OPTION MAX. FUSE/ MIN. OD FAN CONV MODEL BLOWER CIRCUIT BRKR VOLTAGE MOTORS OUTLET TONNAGE MOTOR AMPACITY MODEL STAGES AMPS SIZE FLA EACH AMPS EACH EACH...

  • Page 32: Dr Electrical Data - Low Airflow Drive Motor W/O Powered Convenience Outlet

    127915-YIM-A-0405 TABLE 10: DR ELECTRICAL DATA - LOW AIRFLOW DRIVE MOTOR W/O POWERED CONVENIENCE OUTLET COMPRESSORS HEATER OPTION MAX. FUSE/ MIN. OD FAN CONV MODEL BLOWER CIRCUIT BRKR VOLTAGE MOTORS OUTLET TONNAGE MOTOR AMPACITY MODEL STAGES AMPS SIZE FLA EACH AMPS EACH EACH...

  • Page 33: Dr Electrical Data - Standard Drive Motor With Powered Convenience Outlet

    127915-YIM-A-0405 TABLE 11: DR ELECTRICAL DATA - STANDARD DRIVE MOTOR WITH POWERED CONVENIENCE OUTLET COMPRESSORS HEATER OPTION MAX. FUSE/ MIN. OD FAN CONV MODEL BLOWER CIRCUIT BRKR VOLTAGE MOTORS OUTLET TONNAGE MOTOR AMPACITY MODEL STAGES AMPS SIZE FLA EACH AMPS EACH EACH (AMPS)

  • Page 34: Dr Electrical Data - High Static Drive Motor With Powered Convenience Outlet

    127915-YIM-A-0405 TABLE 12: DR ELECTRICAL DATA - HIGH STATIC DRIVE MOTOR WITH POWERED CONVENIENCE OUTLET COMPRESSORS HEATER OPTION MAX. FUSE/ MIN. OD FAN CONV MODEL BLOWER CIRCUIT BRKR VOLTAGE MOTORS OUTLET TONNAGE MOTOR AMPACITY MODEL STAGES AMPS SIZE FLA EACH AMPS EACH EACH...

  • Page 35: Dr Electrical Data - Low Airflow Drive Motor With Powered Convenience Outlet

    127915-YIM-A-0405 TABLE 13: DR ELECTRICAL DATA - LOW AIRFLOW DRIVE MOTOR WITH POWERED CONVENIENCE OUTLET COMPRESSORS HEATER OPTION MAX. FUSE/ MIN. OD FAN CONV MODEL BLOWER CIRCUIT BRKR VOLTAGE MOTORS OUTLET TONNAGE MOTOR AMPACITY MODEL STAGES AMPS SIZE FLA EACH AMPS EACH EACH...

  • Page 36: Dimensions & Clearances 15/20/25 Ton

    127915-YIM-A-0405 ECONOMIZER / MOTORIZED DAMPER FIXED OUTDOOR INTAKE AIR AND POWER EXHAUST RAIN HOODS (See detail Y) BLOWER MOTOR BLOWER BLOWER ACCESS COMPARTMENT ACCESS ACCESS 80- 9/32 COMPRESSOR ACCESS (Auxillary) (See detail X) 48- /4 DOT PLUG (For pressure drop reading) GAS OR ELECTRIC COIL...
  • Page 37 127915-YIM-A-0405 DUCT COVERS - Units are shipped with the bottom duct openings covered. An accessory flange kit is available for connecting side ducts. For bottom duct applications: 1. Remove the side panels from the supply and return air compartments to gain access to the bottom supply and return air duct covers.

  • Page 38: Cfm, Static Pressure, And Power - Altitude And Temperature Corrections

    127915-YIM-A-0405 CFM, STATIC PRESSURE, AND POWER - ALTI- order to use the indoor blower tables for high altitude applica- tions, certain corrections are necessary. TUDE AND TEMPERATURE CORRECTIONS A centrifugal fan is a "constant volume" device. This means The information below should be used to assist in application that, if the rpm remains constant, the CFM delivered is the of product when being applied at altitudes at or exceeding same regardless of the density of the air.

  • Page 39: Factor

    127915-YIM-A-0405 ltitude/Temperature Conversion Factor SEA LEVEL TEMPER TURE (°F) FIGURE 13 - ALTITUDE/TEMPERATURE CONVERSION FACTOR Unitary Products Group...

  • Page 40: Dr180 Blower Performance - Standard Drive (Cooling Only)

    127915-YIM-A-0405 TABLE 15: DR180 BLOWER PERFORMANCE - STANDARD DRIVE (COOLING ONLY) 15 ton Standard Drive Blower Performance (Horizontal Discharge) CFM RPM BHP CFM BHP CFM BHP CFM 6373 931 3.343 4.01 6172 899 3.058 3.67 5821 868 2.664 3.20 5591 834 2.415 2.90...

  • Page 41: Dr180 Blower Performance - Standard Drive (Gas Heat)

    127915-YIM-A-0405 TABLE 16: DR180 BLOWER PERFORMANCE - STANDARD DRIVE (GAS HEAT) 15 ton Standard Drive Blower Performance (Horizontal Discharge) ESP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM BHP CFM RPM 6246 912 3.276 3.93 6049 881 2.997 3.60 5705...

  • Page 42: Dr180 Blower Performance - High Static Drive (Cooling Only)

    127915-YIM-A-0405 TABLE 17: DR180 BLOWER PERFORMANCE - HIGH STATIC DRIVE (COOLING ONLY) 15 Ton High Static Drive Blower Performance (Horizontal Discharge) CFM RPM BHP CFM BHP CFM BHP CFM RPM KW BHP 8032 1168 6.346 7.80 7765 1129 5.808 7.14 7396 1092 5.143...

  • Page 43: Dr180 Blower Performance - High Static Drive (Gas Heat)

    127915-YIM-A-0405 TABLE 18: DR180 BLOWER PERFORMANCE - HIGH STATIC DRIVE (GAS HEAT) 15 Ton High Static Drive Blower Performance (Horizontal Discharge) CFM RPM BHP CFM BHP CFM BHP CFM RPM KW BHP 7871 1145 6.22 7.65 7610 1106 5.69 7.00...

  • Page 44: Dr240 Blower Performance - Standard Drive (Cooling Only)

    127915-YIM-A-0405 TABLE 19: DR240 BLOWER PERFORMANCE - STANDARD DRIVE (COOLING ONLY) DR240 Standard Drive Blower Performance (Horizontal Discharge) ESP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM CFM RPM 9445 1025 6.94 8.79 9021 993 6.211 7.87 8684 962 5.59 7.08 8422 929 5.057 6.41 8028 4.516 5.72 7677.5 863 4.00758 5.08...

  • Page 45: Dr240 Blower Performance - Standard Drive (Gas Heat)

    127915-YIM-A-0405 TABLE 20: DR240 BLOWER PERFORMANCE - STANDARD DRIVE (GAS HEAT) DR240 Standard Drive Blower Performance (Gas heat) (Horizontal Discharge) ESP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP 0.2 9260 1005 6.804 8.62 8844 974 6.089 7.72 8514 943 5.48...

  • Page 46: Dr240 Blower Performance - High Static Drive (Cooling Only)

    127915-YIM-A-0405 TABLE 21: DR240 BLOWER PERFORMANCE - HIGH STATIC DRIVE (COOLING ONLY) DR240 Blower Performance (Horizontal Discharge) (High Static Option) ESP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP 0.2 10477 1118 9.15 11.64 10161 1086 8.42 10.70 9949 1056 7.76 9.86 9634 1025 7.05 8.96 9232 973 6.43...

  • Page 47: Dr240 Blower Performance - High Static Drive (Gas Heat)

    127915-YIM-A-0405 TABLE 22: DR240 BLOWER PERFORMANCE - HIGH STATIC DRIVE (GAS HEAT) DR240 Blower Performance (Gas Heat) (Horizontal Discharge) (High Static Option) ESP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP 0.2 10272 1096 8.98 11.4 9962 1065 8.25 10.5 9754 1035 7.61...

  • Page 48: Dr300 Blower Performance

    127915-YIM-A-0405 TABLE 23: DR300 BLOWER PERFORMANCE - STANDARD DRIVE DR300 Blower Performace (Horizontal Discharge) ESP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP 0.4 9550 996 7.1 9.04 8800 959 6.1 7.79 8700 950 5.9 7.53 8250 913 4.95 6.97 8050 877 4.7 5.99 7250 842 3.9 4.97 0.6 9010 997 6.6 8.43 8150 960 5.6 7.15 8010 950 5.4 6.89 7540 915 4.57 6.44 7290 879 4.2 5.33 6460 843 3.5 4.47 0.8 8430 998 6.1 7.79 7510 961 5.1 6.51 7330 952 4.9 6.25 6820 916 4.09 5.77 6480 880 3.7 4.76 5600 844 3.1 3.99 7830 1000 5.6 7.15 6830 962 4.6 5.87 6570 953 4.4 5.62 5990 916 3.52 4.96 5500 881 3.1 3.99...

  • Page 49: Dr300 Blower Performance

    127915-YIM-A-0405 TABLE 24: DR300 BLOWER PERFORMANCE - HIGH STATIC DRIVE DR300 Blower Performance (Horizontal Discharge) ESP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP CFM RPM KW BHP 0.4 11600 1200 12.5 16.0 11175 1164 11.5 14.7 10620 1127 10.4 13.3 10500 1092 9.2 11.7 9875 1058 8.2 10.5 9100 1020 7.4 0.6 11060 1201 11.8 15.1 10600 1166 10.8 13.8 10100 1131 9.7 12.4 9980 1095 8.6 11.0 9320 1060 7.6...

  • Page 50: Static Resistances

    127915-YIM-A-0405 TABLE 25: STATIC RESISTANCES RESISTANCE, IWG DESCRIPTION 15 TON 20 TON 25 TON 4500 5600 7500 6000 8000 9400 7500 10000 12500 WET INDOOR COIL 0.11 0.11 0.11 18 KW 0.35 0.35 0.40 0.45 0.31 0.45 0.55 36 KW 0.32 0.37 0.48...

  • Page 51: Charging Chart - 15 Ton

    127915-YIM-A-0405 DR180 Charging Chart Outdoor Temp (ºF) 115º 105º 95º 85º 75º 65º Suction Pressure (psi) 1. Make sure that both condenser fans are running when charging. One fan may switch off at lower ambient temperatures making the chart above inaccurate.

  • Page 52: Phasing

    127915-YIM-A-0405 DR300 Charging Chart Outdoor Temp (ºF) 115º 105º 95º 85º 75º 65º Suction Pressure (psi) Both fans must be running when charging the unit. One fan may switch off at low ambient temperatures making this chart inaccurate. FIGURE 16 - CHARGING CHART - 25 TON PHASING 2.

  • Page 53: Operation

    PRESSURE DROP ACROSS A DRY COIL VS SUPPLY AIR CFM 0.65 For electric heat units, the UCB passes the call to the electric heater. DR180 0.55 In both cases, when the "W1" call is sensed, the indoor 0.45 air blower is energized following a specified heating DR300 delay.

  • Page 54: Intermittent Blower

    127915-YIM-A-0405 INTERMITTENT BLOWER motor (if the fan switch on the room thermostat is set in the "AUTO" position) and drives the economizer damp- With the room thermostat fan switch set to "AUTO" and ers from fully closed to their minimum position. If the the system switch set to either the "AUTO"...

  • Page 55: Motorized Outdoor Air Dampers

    127915-YIM-A-0405 MOTORIZED OUTDOOR AIR DAMPERS - Should a low-pressure switch open three times within one hour of operation, the UCB will lock-out the associ- This system operation is the same as the units with no ated compressor and flash a code (Table 33). If the outdoor air options with one exception.

  • Page 56: Compressor Protection

    127915-YIM-A-0405 low return air temperature, (opens at 26 ± 5 °F and on the board. (See Figure 19.) Each mode is described resets at 38 ± 5°F). below. Refer to Figures 19 - 21 when reading this sec- tion. 2. A high-pressure switch to protect against exces- sive discharge pressures due to a blocked con- “NORMAL”...

  • Page 57: Reheat Control Board

    127915-YIM-A-0405 When the room thermostat calls for first stage cooling Indoor blower operation is initiated upon a call for first while there is still a call for dehumidification, no opera- stage cooling, second stage cooling or dehumidification. tional change is made. The call for cooling is ignored Anytime there is a call for 2 stages of cooling, the unit and the unit continues to operate with circuit #1 in will not operate in the reheat mode, even if there is still...

  • Page 58: Reheat Controls - Part 1

    127915-YIM-A-0405 UNIT CONTROL REHEAT CONTROL BOARD BOARD HUMIDIFY TERMINAL REHEAT RELAY RHTB REHEAT TERMINAL BLOCK FIGURE 20 - REHEAT CONTROLS - PART 1 REHEAT SOLENOID REHEAT REHEAT SOLENOID SOLENOID UNIT CONTROL BOARD REHEAT CONTROL BOARD FIGURE 21 - REHEAT CONTROLS - PART 2 Unitary Products Group...

  • Page 59: Electric Heating Sequence Of Operations

    127915-YIM-A-0405 Check Valve Piping T Condenser Check Valve Air Flow Air Flow Condenser Indoor Blower Coil Refrigerant flow in cooling mode Evaporator Hot Gas Coil Coil Refrigerant flow in reheat mode Open in Bleed Line to clear Suction line Cooling the Hot Gas Coil bleed when it is not in use...

  • Page 60: Heating Operation Errors

    127915-YIM-A-0405 NOTE: All 240 & 480V heaters are provided with man- TABLE 28: LIMIT CONTROL SETTING ual reset backup protection limits. These will TEMPERATURE TEMPERATURE de-energize the heaters should the primary UNIT HEATER VOLTAGE LIMIT SWITCH 1, 2 LIMIT SWITCH 3, (Tons) limit fail to open or the contactors fail to open in OPENS, ºF...

  • Page 61: Gas Heating Sequence Of Operations

    127915-YIM-A-0405 When the thermostat calls for the second stage of TABLE 29: ELECTRIC HEAT ANTICIPATOR heating, the low-voltage control circuit from "R" to "W2" SETPOINTS is completed, thru the UCB. Heat relay "RW2" is ener- SETTING, AMPS HEATER gized. The "RW2-1" contact is closed energizing the VOLTAGE second stage ignition module "IC2".

  • Page 62: Gas Heating Operation Errors

    127915-YIM-A-0405 When the thermostat has been satisfied, heating calls down the ignition control and closing the main gas are ceased. The GV is immediately de-energized. The valves and energizing the blower. blower is de-energized after the fan off delay for heat- ing has elapsed.

  • Page 63: Flash Codes

    127915-YIM-A-0405 START-UP (COOLING) TABLE 30: LIMIT CONTROL SETTING CAPACITY, MBH UNITS LIMIT CONTROL PRESTART CHECK LIST (Tons) OPENS, ºF INPUT OUTPUT 15, 20, 25 After installation has been completed: 15, 20, 25 1. Check the electrical supply voltage being supplied. Be sure that it is the same as listed on the unit nameplate.

  • Page 64: Shut Down

    127915-YIM-A-0405 SHUT DOWN 1. Check for gas leaks in the unit piping as well as the supply piping. 1. Set the thermostat to highest temperature setting. 2. Turn off the electrical power to the unit. START-UP (GAS HEAT) FIRE OR EXPLOSION HAZARD PRE-START CHECK LIST Failure to follow the safety warning exactly could result in serious injury, death or property...

  • Page 65: Pilot Checkout

    127915-YIM-A-0405 Adjust as follows: 3. Remove the gas piping closure panel. 1. Remove the cap on the regulator. It's located next 4. Disconnect wiring to the gas valves and spark igni- to the push-on electrical terminals. tors. Remove the manifold-burner gas valve assembly by lifting up and pulling back.

  • Page 66: Adjustment Of Temperature Rise

    127915-YIM-A-0405 TROUBLESHOOTING TABLE 32: GAS RATE - CUBIC FEET PER HOUR Seconds Size of Test Dial COOLING TROUBLESHOOTING GUIDE for One 1/2 cu. ft. 1 cu. ft. Rev. Troubleshooting of components may require opening the electrical control box with the power connected to the unit.
  • Page 67 127915-YIM-A-0405 protection. Cancel any thermostat calls and set the requested but locked out, unless this option has fan switch to AUTO. Wait for the internal overload been disabled through computer communications. to reset. Test again when cool. 2. If no economizer is installed or the economizer is not opening to provide free cooling and compres- 5.
  • Page 68 127915-YIM-A-0405 on the UCB. The UCB will flash the last five alarms 14. The UCB can be programmed to lock out compres- on the LED. If the compressor is locked out, cancel sor operation during free cooling and in low ambi- any call for cooling.
  • Page 69 127915-YIM-A-0405 6. If 24 volts is not present at M2, check for 24 volts at 12. If none of the above corrected the error, test the the UCB terminal, C2. If 24 volts are present, integrity of the UGB. Disconnect the C2 terminal check for loose wiring between C2 and the com- wire and jumper it to the Y2 terminal.

  • Page 70: Gas Heat Troubleshooting Guide

    127915-YIM-A-0405 8. If 24 volts are present at the UCB Y1 terminal, the “ECON” terminal. If 24 volts is not present, check compressor may be out due to an open high-pres- for loose wiring from the Y1 “OUT” terminal to the sure switch, low-pressure switch, or freezestat.
  • Page 71 127915-YIM-A-0405 NOTE: To find the Btu input, multiply the number of nal, check for loose wiring between the UCB and cubic feet of gas consumed per hour by the Btu content of the gas in your particular locality (contact your gas company for this information 7.
  • Page 72 127915-YIM-A-0405 5. If the (RW1) relay is not pulled in, check for 24 volts 7. If 24 volts is present at the ignitor controls, check at the (RW1) coil. If 24 volts is present, replace the all control wiring at the ignitor controls and the high (RW1) relay.

  • Page 73: Unit Flash Codes

    127915-YIM-A-0405 The pilot burner ignites but the ignitor continues to Do not confuse this with an error flash code. To prevent spark and the main burners do not ignite. confusion, a 1-flash, flash code is not used. 1. Make the same checks and adjustment as Current alarms or active restrictions are flashed on the described in “PILOT CHECKOUT”...

  • Page 74: Reheat Control Board Flash Codes

    127915-YIM-A-0405 TABLE 34: REHEAT CONTROL BOARD FLASH CODES FLASH CODES DESCRIPTION On Steady This is a Control Failure 1 Flash Not Applicable Hot Gas Reheat is on with Y1 Output 2 Flashes (No Call for Cooling) Y1, Y2, and Hot Gas Reheat is on because of 3 Flashes a call for Y1 and Humidistat.
  • Page 75 127915-YIM-A-0405 Unitary Products Group...
  • Page 76 Subject to change without notice. Printed in U.S.A. 127915-YIM-A-0405 Copyright © 2005 by Unitary Products Group. All rights reserved. Supersedes: 98833-YIM-A-1104 Unitary 5005 Norman Products York Group Drive 73069...

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