. CAUTION: READ ALL SAFETY GUIDES BEFORE YOU BEGIN TO INSTALL YOUR UNIT. SAVE THIS MANUAL SINGLE PACKAGE AIR CONDITIONERS AND SINGLE PACKAGE GAS/ELECTRIC UNITS DM090, 120 AND 150 7-1/2, 10 AND 12-1/2 TON (9.0 TO 10.0 EER) 50 Hz 127408-YIM-B-0606. GENERAL.5 SAFETY CONSIDERATIONS. 5 INSPECTION. 127408-YIM-B-0606 Fig. # UNIT SHIPPING BRACKET.

• York Rooftop Manuals

8 CONDENSER COVERING. 8 COMPRESSOR SECTION. # UNIT VOLTAGE LIMITATIONS.10 UNIT TEMPERATURE LIMITATIONS.

10 UNIT WEIGHT. 127408-YIM-B-0606 GENERAL ® ® YORK Predator units are single package air conditioners with optional gas heating designed for outdoor installation on a rooftop or slab and for non-residential use. These units can be equipped with factory or field installed electric heaters for heating applications.

REFERENCE Additional information is available in the following reference forms:. Technical Guide - DM090-150, 259335. General Installation - DM090 - 150, 127408. Pre-start & Post-start Check List. Economizer Accessory - Downflow Factory Installed Downflow Field Installed Horizontal Field Installed. 127408-YIM-B-0606 NOMENCLATURE 7.5-12.5 Ton York D M 090 N10 A 7 A AA 3 0 1 2 4 A Product Category D = A/C, Single Pkg., R-22 Product Identifier M = 9.0 EER A/C Nominal Cooling Capacity 090 = 7.5 Ton 120 = 10.0 Ton. INSTALLATION INSTALLATION SAFETY INFORMATION Read these instructions before continuing this appliance installation.

This is an outdoor combination heating and cool- ing unit. The installer must assure that these instructions are made available to the consumer and with instructions to retain them for future reference.

Refer to the furnace rating plate for the approved type of gas for this furnace. 127408-YIM-B-0606 This product must be installed in strict compliance with the enclosed installation instructions and any applicable local, state and national codes including, but not limited to, building, electrical, and mechani- cal codes. The furnace and its individual shut-off valve must be disconnected from the gas supply piping system during any pressure testing at pressures in excess of 1/2 PSIG. If a unit is to be installed on a roof curb other than a YORK roof curb, gasketing must be applied to all sur- 57(14) 72(22) faces that come in contact with the unit underside. (76.2) (68.4) (61.7) (81.6) (73) (65.8) FIGURE 6 - UNIT 6 POINT LOAD LEFT Unit Model Number DM090 38 (965.2) DM120 47 1/2 (1206.5) DM150 47 1/2 (1206.5) FIGURE 7 - UNIT CENTER OF GRAVITY Unitary Products Group CLEARANCES Operating Weight All units require particular clearances for proper operation and lbs. FIGURE 8 - UNIT DIMENSIONS TABLE 6: UNIT HEIGHT Unit Model Number DM090 DM120 DM150 DETAIL B TABLE 7: UNIT CLEARANCES † Right 72(1830) Front Left 36(915) ‡ 36(915) Rear Bottom In inches and millimeters, in.(mm).

Units must be installed outdoors. Overhanging struc- ture or shrubs should not obstruct condenser air dis- charge outlet. 127408-YIM-B-0606 FIGURE 9 - BOTTOM DUCT OPENINGS (FROM ABOVE) 18-1/4 (465) 5-5/32 (130) NOTE: (XXX) indicates millimeters FIGURE 10 - REAR DUCT DIMENSIONS TABLE 8: REAR DUCT DIMENSIONS Cabinet Size “A” 50 3/4 (1289) 28 1/4 (717) 42 (1067) 27 3/4 (705) Unitary Products Group DOT PLUGS 18-1/4. DUCTWORK Ductwork should be designed and sized according to the methods in Manual D of the Air Conditioning Contractors of America (ACCA) or as recommended by any other recog- nized authority such as ASHRAE or SMACNA. A closed return duct system should be used.

This will not preclude use of economizers or outdoor fresh air intake. 127408-YIM-B-0606 When fastening ductwork to side duct flanges on unit, insert screws through duct flanges only. DO NOT insert screws through casing. Outdoor duct- work must be insulated and water-proofed. FIGURE 13 - SIDE PANELS WITH HOLE PLUGS Note orientation. Panel is “insulation” side up. FIGURE 14 - RETURN DOWNFLOW PLENUM WITH PANEL FIGURE 15 - DISCHARGE PANEL IN PLACE.

THERMOSTAT WIRING The thermostat should be located on an inside wall approxi- mately 56 inches (1422 mm) above the floor where it will not be subject to drafts, sun exposure or heat from electrical fix- tures or appliances. Follow the manufacturer's instructions enclosed with thermostat for general installation procedure.

127408-YIM-B-0606 FIGURE 17 - ELECTRONIC THERMOSTAT FIELD WIRING FIGURE 18 - FIELD WIRING 24 VOLT THERMOSTAT Unitary Products Group. GROUND FIGURE 19 - FIELD WIRING DISCONNECT - COOLING UNIT WITH OR WITHOUT ELECTRIC HEAT GROUND FIGURE 20 - FIELD WIRING DISCONNECT - COOLING UNIT WITH GAS HEAT TERMINAL BLOCK TB1 FIELD SUPPLIED DISCONNECT CONTACTOR 1M FIELD SUPPLIED DISCONNECT 127408-YIM-B-0606 THREE PHASE POWER. 127408-YIM-B-0606 TABLE 10: ELECTRICAL DATA 7-1/2 TON Supply Compressors Blower Motors Motor FLA Voltage 3 HP Unit voltage limitations: minimum utilization 342 volts, maximum utilization 457 volts. Maximum HACR breaker of the same amp size is acceptable. TABLE 11: ELECTRICAL DATA 10 TON Supply Blower Compressors Motor FLA.

TABLE 12: ELECTRICAL DATA 12-1/2 TON Supply Air Compressors Motors Motor FLA Voltage 4 HP (3 kW) 12.0 12.0 Unit voltage limitations: minimum utilization 342 volts, maximum utilization 457 volts. Maximum HACR breaker of the same amp size is acceptable. TABLE 13: PHYSICAL DATA Component Blower, Centrifugal.

127408-YIM-B-0606 OPTIONAL ELECTRIC HEAT The factory-installed heaters are wired for single point power supply. Power supply need only be brought into the single point terminal block. These CSA approved heaters are located within the central compartment of the unit with the heater elements extending into the supply air chamber.

TABLE 16: GAS PIPE SIZING - CAPACITY OF PIPE Nominal Iron Pipe Size Length of Pipe ft. 10 (3) 278 (7.8) 520 (14.7) 20 (6) 190 (5.3) 350 (9.9) 30 (9.1) 152 (4.3) 285 (8) 40 (12.1) 130 (3.6) 245 (6.9). 127408-YIM-B-0606 LP UNITS, TANKS AND PIPING 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 LP gas with accessory kit model number 1NP0441. All LP gas equipment must conform to the safety standards of the National Fire Protection Association. cabinet, if the unit has factory installed options. If field installed accessories are being installed all parts necessary for the installation comes in the accessory. ECONOMIZER AND POWER EXHAUST SET POINT ADJUSTMENTS AND INFORMATION Remove the top rear access panel from the unit. Locate the economizer control module, where the following adjustments will be made.

127408-YIM-B-0606 CONTROL CURVE FIGURE 23 - ENTHALPY SET POINT CHART Exhaust Air Adjustment Screw Exhaust Air LED Damper Min. Position Screw Indoor Air Quality Max. Adjustment Screw Indoor Air Quality Indoor Air Quality Min. Adjustment Screw Free Cooling LED Economizer Enthalpy Set Point Adjustment Screw FIGURE 24 - HONEYWELL ECONOMIZER CONTROL W7212. PHASING ® Predator units are properly phased at the factory.

Check for proper compressor rotation. If the blower or compressors rotate in the wrong direction at start-up, the electrical connec- tion to the unit is misphased. Change the phasing of the Field Line Connection at the factory or field supplied discon- nect to obtain proper rotation.

127408-YIM-B-0606 TABLE 18: BLOWER PERFORMANCE 7-1/2 TON STANDARD MOTOR - SIDE DUCT (IMPERIAL) (iwg) Watts Watts – – – – 3690 2230 2.39 3468 1950 3478 2110 2.26 3239 1830 3243 1980 2.12 3001 1720 3006 1830 1.96 2758 1580 2758 1720 1.85. TABLE 22: BLOWER PERFORMANCE 10 TON STANDARD MOTOR - SIDE DUCT (IMPERIAL) (iwg) Watts Watts 4820 2675 2.87 4582 2362 4522 2496 2.68 4307 2215 4223 2332 2.50 3973 2062 3913 2174 2.33 3679 1923 3521 1978 2.12 3104 1693 2790 1660 1.78. 127408-YIM-B-0606 TABLE 25: BLOWER PERFORMANCE 10 TON OPTIONAL MOTOR - SIDE DUCT (METRIC) (Pa) (kW) (kW) (kW) 2.39 3.31 2.40 3.60 2.88 2.26 3.11 2.24 3.32 2.65 2.12 2.89 2.11 3.11 2.49 1.92 2.62 1.89 2.78 2.23 1.60 2.22 1.65 2.48 1.98 TABLE 26: BLOWER PERFORMANCE 12-1/2 TON - SIDE DUCT (IMPERIAL). TABLE 28: BLOWER PERFORMANCE 7-1/2 TON STANDARD MOTOR - DOWNSHOT (IMPERIAL) (iwg) Watts Watts 3478 2110 2.26 3239 1830 3243 1980 2.12 3001 1720 3006 1830 1.96 2758 1580 2758 1720 1.85 2533 1510 2447 1570 1.68 2182 1350 2085 1410 1.51 –. 127408-YIM-B-0606 TABLE 31: BLOWER PERFORMANCE 7-1/2 TON OPTIONAL MOTOR - DOWNSHOT (METRIC) (Pa) (kW) (kW) (kW) – – – – 1.67 2.44 1.95 1.55 2.12 1.57 2.31 1.85 1.43 1.99 1.46 2.16 1.73 1.31 1.86 1.35 2.04 1.63 1.17 1.71 1.19 1.86 1.49. TABLE 34: BLOWER PERFORMANCE 10 TON OPTIONAL MOTOR - DOWNSHOT (IMPERIAL) (iwg) Watts Watts 4908 3197 3.71 4915 3456 4651 3013 4653 3253 3.49 4377 2823 4372 3046 3.27 4087 2631 3.04 4070 2837 3780 2437 3748 2629 2.82 3455 2243 3406 2425.

Blower performance includes dry coil and two-inch filters. Blower performance for gas heat includes the maximum number of heat tubes available for each tonnage. TABLE 38: INDOOR BLOWER SPECIFICATIONS MOTOR MODEL Eff. 1725 1.15 DM090 1725 1.15 1725 1.15 DM120 1725 1.15 1725 1.15 DM150.

Start the supply air blower motor. Adjust the resistances in both the supply and the return air duct systems to balance the air distribution throughout the conditioned space. The job specifications may require that this balancing be done by someone other than the equipment installer. 127408-YIM-B-0606 FIGURE 26 - DRY COIL DELTA P 50' CABINET FIGURE 27 - DRY COIL DELTA P 42' CABINET Unitary Products Group. SUPPLY AIR DRIVE ADJUSTMENT Before making any blower speed changes review the installation for any installation errors, leaks or undesirable systems effects that can result in loss of airflow.

Even small changes in blower speed can result in substantial changes in static pressure and BHP. BHP and AMP draw of the blower motor will increase by the cube of the blower speed. 127408-YIM-B-0606 TABLE 39: ADDITIONAL STATIC RESISTANCE 50” CABINET (IMPERIAL) Cooling Only 1900 0.06 2100 0.07 2300 0.08 2500 0.09 2700 0.11 2900 0.12 3100 0.14 3300 0.16 3500 0.18 3700 0.20 3900 0.23 4100 0.25 4300 0.28 4500 0.30 4700 0.33 4900 0.36. TABLE 41: ADDITIONAL STATIC RESISTANCE 50” CABINET (METRIC) Cooling Only 0.89 14.9 0.99 17.4 1.08 19.9 1.18 22.4 1.27 27.3 1.36 29.8 1.46 34.8 1.55 39.7 1.65 44.7 1.74 49.7 1.83 57.1 1.93 62.1 1.02 69.5 2.12 74.5 2.21 82.0 2.30 89.4 2.40. 127408-YIM-B-0606 TABLE 43: MOTOR SHEAVE DATUM 1VM50x7/8 (1-1/2, 2 & 3 HP Motor) Turns Open 1-1/2 2-1/2 3-1/2 4-1/2 Unitary Products Group Datum Dia. Turns Open in.(mm.) 4.4 (111.7) 4.3 (109.2) 1-1/2 4.2 (106.6) 4.1 (104.1) 2-1/2 4.0 (101.6) 3.9 (99) 3-1/2 3.8 (96.5) 3.7 (94). OPERATION SEQUENCE OF OPERATIONS OVERVIEW ® For the Predator series of units, the thermostat makes a cir- cuit between 'R' and 'Y1' for the first stage of cooling.

The call is passed to the Unit Control Board (UCB), which then determines whether the requested operation is available and, if so, which components to energize. 127408-YIM-B-0606 ECONOMIZER WITH POWER EXHAUST - A unit equipped with an economizer (single or dual enthalpy) and a power exhaust operates as specified above with one addition. The power exhaust motor is energized 45 seconds after the actuator position exceeds the exhaust fan set point on the economizer control. affected by any safety/preventive action. The other refrigerant system will continue in operation unless it is affected by the fault as well.

The unit control board monitors the temperature limit switch of electric heat units and the temperature limit switch and the gas valve of gas furnace units. 127408-YIM-B-0606 GAS HEATING SEQUENCE OF OPERATIONS When the thermostat calls for the first stage of heating, the low-voltage control circuit from “R” to “W1” is completed. A call for heat passes through the UCB to the Ignition Control Board (ICB).

The UCB monitors the “W1” call and acts upon any call for heat by monitoring the Gas Valve (GV). TABLE 46: GAS HEAT LIMIT SETTINGS Unit Main Limit Setting Size Opt. Natural Gas 165°F (73.9°C) DM090 165°F (73.9°C) DM120 195°F (90.5°C) DM150 195°F (90.5°C) Rollout = 300°F (148.9°C), Auxiliary Limit = 200°F The ICB monitors the Pressure and Rollout switches of gas heat units. 127408-YIM-B-0606 START-UP (COOLING) PRESTART CHECK LIST After installation has been completed: Check the electrical supply voltage being supplied. Be sure that it is the same as listed on the unit nameplate. Set the room thermostat to the off position.

Turn unit electrical power on. Set the room thermostat fan switch to on. Open gas heat access panel. Turn gas valve clockwise to “OFF” position (See Figure 29). MANIFOLD GAS PRESSURE ADJUSTMENT This gas furnace has two heat stages. Therefore, the gas valve has two adjustment screws located under a plastic pro- tective cover. The second stage (100% input) adjustment screw is adjacent to the “HI”.

127408-YIM-B-0606 TABLE 49: GAS RATE CUBIC FEET PER HOUR Seconds Size of Test Dial for One 1/2 cu. NOTE: To find the Btu input, multiply the number of 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 as it varies widely from area to area). FIGURE 29 - TYPICAL GAS VALVE CHARGING THE UNIT These units should be charged using the superheat method. Super heat charging data is shown in Tables 50 thru 51. TABLE 50: 7.5 TON SUPERHEAT CHARGING Outdoor Temp (°F) 10.9 When charging each system, superheat data should be taken at the compressor inlet. 127408-YIM-B-0606 TABLE 51: 10 TON SUPERHEAT CHARGING Outdoor Temp (°F) 26.8 27.4 25.3 26.0 23.8 24.5 22.8 23.5 21.8 22.5 20.2 21.0 18.7 19.5 17.1 17.9 15.5 16.3 14.1 14.9 12.6 13.4 12-1/2 ton unit uses TXV.

Charge the unit to 10° subcooling. Unitary Products Group Superheat at Compressor Suction (°F) Airflow = 4000 CFM. TROUBLESHOOTING Troubleshooting of components may require open- ing the electrical control box with the power con- nected to the unit.

Use extreme care when working with live circuits! Check the unit name- plate for the correct line voltage and set the voltme- ter to the correct range before making any connections with line terminals. 127408-YIM-B-0606 TABLE 53: IGNITION CONTROL FLASH CODES FLASHES FAULT CONDITIONS STEADY ON Control Failure HEARTBEAT Normal Operation Not Applicable Pressure Switch Stuck Closed Pressure Switch Failed To Close Limit Switch Open Flame Present With Gas Off First Stage Gas Valve Energized With W1 Off Second Stage Gas Valve Energized With First. Monitored Systems Problem? Trip/Failure Monitor Turn off ID Blower Motor FIGURE 31 - BASIC TROUBLESHOOTING FLOWCHART Power to Unit FIGURE 32 - POWER ON FLOW CHART Call for Programming? Program Unit Call for Control Heat Board Energize ID Blower Motor Fan on Fan off 30 secs?. 127408-YIM-B-0606 FIGURE 33 - TRIP FAILURE FLOW CHART Unitary Products Group.

York Rooftop Manuals

COOLING TROUBLESHOOTING GUIDE On calls for cooling, if the compressors are operating but the supply air blower motor does not energize after a short delay (the room thermostat fan switch is in the “AUTO” position): Turn the thermostat fan switch to the ON position. If the supply air blower motor does not energize, go to Step 3.

127408-YIM-B-0606 If 24 volts is present at the UCB Y1 terminal and none of the protection switches have opened, the UCB may have locked out the compressor for repeat trips. The UCB should be flashing an alarm code.

If not, press and release the ALARMS button on the UCB. low-pressure switch, or freezestat. Check for 24 volts at the HPS2, LPS2, and FS2 terminals of the UCB. If a switch has opened, there should be a voltage potential between the UCB terminals, e.g. If LPS2 has opened, there will be 24 volts of potential between the LPS2 ter- minals.

127408-YIM-B-0606 11. If 24 volts is present at the UCB Y1 terminal and the compressor is not out due to a protective switch trip, repeat trip lock out, or ASCD, the economizer terminals of the UCB may be improperly wired. Check for 24 volts at the Y1 “OUT”. If the blower motor runs with the fan switch in the “ON” position but does not run shortly after the furnace has ignited when the fan switch is in the “AUTO” position, check the room thermostat for contact between R and G during “W1”. 127408-YIM-B-0606 Unitary Products Group. Subject to change without notice. Printed in U.S.A.

Copyright © 2006 by Unitary Products Group. All rights reserved. Unitary Products Group Supersedes: 127408-YIM-A-0405 5005 York Drive 127408-YIM-B-0606 Norman 73069.

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