York SUNLINE MagnaDRY DR 180 Installation Manual Download Page 51 | Manualshive

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127915-YIM-A-0405

Unitary Products Group

51

FIGURE 14 - CHARGING CHART - 15 TON

DR180 Charging Chart

150

170

190

210

230

250

270

290

310

330

350

60

65

70

75

80

85

90

Suction Pressure (psi)

Discharge Pressure (psi

)

115º

105º

95º

85º

Outdoor Temp (ºF)

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.
2. This chart is applicable to unit with the TXV's left to the factory setting. If the TXV's have been adjusted in the field,
The charging chart may no longer apply.

75º

65º

FIGURE 15 - CHARGING CHART - 20 TON

DR240 Charging Chart

150

170

190

210

230

250

270

290

310

330

350

60

65

70

75

80

85

90

Suction Pressure (psi)

Outdoor Temp (ºF)

115º

105º

95º

85º

75º

65º

Both fans must be running when charging the unit. One fan may switch off at low ambient temperatures making this chart inaccurate.

Discharge Pressure (psi

)

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Summary of Contents for SUNLINE MagnaDRY DR 180

Page 1: ...ATURE 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 al...

Page 2: ...OWER 54 NO OUTDOOR AIR OPTIONS 54 ECONOMIZER WITH SINGLE ENTHALPY SENSOR 54 ECONOMIZER WITH DUAL ENTHALPY SENSORS 54 ECONOMIZER SINGLE OR DUAL WITH POWER EXHAUST 54 MOTORIZED OUTDOOR AIR DAMPERS 55 COOLING OPERATION ERRORS 55 HIGH PRESSURE LIMIT SWITCH 55 LOW PRESSURE LIMIT SWITCH 55 FREEZESTAT 55 LOW AMBIENT COOLING 55 SAFETY CONTROLS 55 COMPRESSOR PROTECTION 56 FLASH CODES 56 RESET 56 REHEAT MOD...

Page 3: ...TA STANDARD DRIVE MOTOR W O POWERED CONVENIENCE OUTLET 30 9 DR ELECTRICAL DATA HIGH STATIC DRIVE MOTOR W O POWERED CONVENIENCE OUTLET 31 10 DR ELECTRICAL DATA LOW AIRFLOW DRIVE MOTOR W O POWERED CONVENIENCE OUTLET 32 11 DR ELECTRICAL DATA STANDARD DRIVE MOTOR WITH POWERED CONVENIENCE OUTLET 33 12 DR ELECTRICAL DATA HIGH STATIC DRIVE MOTOR WITH POWERED CONVENIENCE OUTLET 34 13 DR ELECTRICAL DATA LO...

Page 4: ...is equipment Observe all precautions in the literature on labels and tags accompanying the equipment whenever working on air conditioning equipment Be sure to follow all other safety precautions that apply Wear safety glasses and work gloves and follow all safety codes Use a quenching cloth and have a fire extinguisher available for all brazing operations INSPECTION As soon as a unit is received i...

Page 5: ...on combustible material For use with natural gas or propane gas The installer should pay particular attention to the words NOTE CAUTION and WARNING Notes are intended to clarify or make the installation easier Cau tions are given to prevent equipment damage Warn ings are given to alert installer that personal injury and or equipment damage may result if installation proce dure is not handled prope...

Page 6: ...Power Exhaust S Option 5 N24 240 MBH Output Aluminized Steel L Std Mtr Drive BAS Ready Econ No BAS Controller w 2 Pleated Filters T Options 1 5 N32 320 MBH Output Aluminized Steel 15 25T Only M Std Mtr Drive BAS Ready Econ No BAS Controller Power Exhaust w 2 Pleated Filters U Options 1 3 5 S24 240 MBH Output Stainless Steel N Hi Static Drive V Options 1 4 5 S32 320 MBH Output Stainless Steel 15 25...

Page 7: ...il Phase Monitor CG CPC Controller DFS APS Technicoat Cond Coil Coil Guard CH CPC Controller DFS APS Technicoat Cond Coil Phase Monitor Coil Guard CJ CPC Controller DFS APS Technicoat Evap Coil CK CPC Controller DFS APS Technicoat Evap Coil Phase Monitor CL CPC Controller DFS APS Technicoat Evap Coil Coil Guard CM CPC Controller DFS APS Technicoat Evap Coil Phase Monitor Coil Guard CN CPC Controll...

Page 8: ...ouble Wall JZ Johnson UNT Controller DFS APS Double Wall Phase Monitor Coil Guard J1 Johnson UNT Controller DFS APS Double Wall Technicoat Cond Coils J2 Johnson UNT Controller DFS APS Double Wall Technicoat Evap Coil J3 Johnson UNT Controller DFS APS Double Wall Technicoat Evap and Cond Coils J4 Johnson UNT Controller DFS APS Double Wall Phase Monitor Coil Guard Technicoat Evap and Cond Coils J5 J...

Page 9: ...Controller DFS APS Technicoat Evap Coil Coil Guard NM Novar ETC 3 Controller DFS APS Technicoat Evap Coil Phase Monitor Coil Guard NN Novar ETC 3 Controller DFS APS Technicoat Evap Cond Coils NP Novar ETC 3 Controller DFS APS Technicoat Evap Cond Coils Phase Monitor NQ Novar ETC 3 Controller DFS APS Technicoat Evap Cond Coils Coil Guard NR Novar ETC 3 Controller DFS APS Technicoat Evap Cond Coils ...

Page 10: ...implicity Intelli Comfort Controller Technicoat Cond Coil Phase Monitor LG Simplicity Intelli Comfort Controller Technicoat Cond Coil Coil Guard LH Simplicity Intelli Comfort Controller Technicoat Cond Coil Phase Monitor Coil Guard LJ Simplicity Intelli Comfort Controller Technicoat Evap Coil LK Simplicity Intelli Comfort Controller Technicoat Evap Coil Phase Monitor LL Simplicity Intelli Comfort ...

Page 11: ...onitor Coil Guard Technicoat Evap and Cond Coils WY Intelli Comfort w ModLINC Controller Double Wall WZ Intelli Comfort w ModLINC Controller Double Wall Phase Monitor Coil Guard W1 Intelli Comfort w ModLINC Controller Double Wall Technicoat Cond Coils W2 Intelli Comfort w ModLINC Controller Double Wall Technicoat Evap Coil W3 Intelli Comfort w ModLINC Controller Double Wall Technicoat Evap and Con...

Page 12: ...S Drain Pan Phase Monitor Coil Guard Technicoat Evap and Cond Coils Hinged Filter Door Toolless Access Panels DY CPC Controller DFS APS Double Wall Hinged Filter Door Toolless Access Panels DZ CPC Controller DFS APS Double Wall Phase Monitor Coil Guard Hinged Filter Door Toolless Access Panels D1 CPC Controller DFS APS Double Wall Technicoat Cond Coils Hinged Filter Door Toolless Access Panels D2 ...

Page 13: ...ss Access Panels GB Honeywell Excel 10 Controller DFS APS Phase Monitor Hinged Filter Door Toolless Access Panels GC Honeywell Excel 10 Controller DFS APS Coil Guard Hinged Filter Door Toolless Access Panels GD Honeywell Excel 10 Controller DFS APS Phase Monitor Coil Guard Hinged Filter Door Toolless Access Panels GE Honeywell Excel 10 Controller DFS APS Technicoat Cond Coil Hinged Filter Door Too...

Page 14: ...chnicoat Evap and Cond Coils PX Novar ETC 3 Controller DFS APS SS Drain Pan Phase Monitor Coil Guard Technicoat Evap and Cond Coils PY Novar ETC 3 Controller DFS APS Double Wall PZ Novar ETC 3 Controller DFS APS Double Wall Phase Monitor Coil Guard P1 Novar ETC 3 Controller DFS APS Double Wall Technicoat Cond Coils P2 Novar ETC 3 Controller DFS APS Double Wall Technicoat Evap Coil P3 Novar ETC 3 C...

Page 15: ...nitor Hinged Filter Door Toolless Access Panels QL Simplicity Intelli Comfort Controller Technicoat Evap Coil Coil Guard Hinged Filter Door Toolless Access Panels QM Simplicity Intelli Comfort Controller Technicoat Evap Coil Phase Monitor Coil Guard Hinged Filter Door Toolless Access QN Simplicity Intelli Comfort Controller Technicoat Evap Cond Coils Hinged Filter Door Toolless Access Panels QP Si...

Page 16: ...T Intelli Comfort w ModLINC Controller SS Drain Pan Phase Monitor Coil Guard Hinged Filter Door Toolless Access Panels XU Intelli Comfort w ModLINC Controller SS Drain Pan Technicoat Cond Coils Hinged Filter Door Toolless Access Panels XV Intelli Comfort w ModLINC Controller SS Drain Pan Technicoat Evap Coil Hinged Filter Door Toolless Access Panels XW Intelli Comfort w ModLINC Controller SS Drain...

Page 17: ...onents are to be added to a unit to meet local codes they are to be installed at the dealer s and or the customer s expense Size of unit for proposed installation should be based on heat loss heat gain calculation made according to the methods of the Air Conditioning Contractors of America ACCA LOCATION Use the following guidelines to select a suitable loca tion for these units 1 Unit is designed ...

Page 18: ...nd ventilation air in accordance with Section 5 3 Air for Combustion and Ventilation of the National Fuel Gas Code ANSI Z223 1 in U S A or Sections 7 2 7 3 or 7 4 of Gas Installation Codes CSA B149 1 in Canada and or applicable provisions of the local building codes Refer to Dimensions and Clearances Figure 12 for the clearances required for combustible construction servicing and proper unit opera...

Page 19: ...g attached to the hood assembly Apply gasketing to the three flange surfaces on the hood prior to installing the hood Extend gasketing 1 4 inch beyond the top and bottom of the two side flanges to insure adequate sealing Adjusting the damper to the desired air flow may be done before mounting the hood into position or after installation by removing the front hood panel or the screen on the bottom ...

Page 20: ...d must be kept clean or replaced with same size and type Dirty filters will reduce the capacity of the unit and will result in frosted coils or safety shutdown Minimum filter area and required sizes are shown in Physical Data Table 7 SERVICE ACCESS The following removable panels provide access to all serviceable components Compressor compartment Electric Heat compartment Gas Heat compartment Two p...

Page 21: ...Terminals A1 and A2 provide a relay output to close the outdoor economizer dampers when the thermostat switches to the set back position 3 TO REMOTE SENSOR 2ET04701324 IF USED DEHUMIDISTAT Dehumidistat closes on rise in humidity RC RH Y1 Y2 G W1 W2 C C W2 W1 G Y2 Y1 R OCC RCB REHEAT CONTROL BOARD HUM TERMINAL BLOCK RH 1 1 2 3 4 1 DEHUMIDISTAT Dehumidistat closes on rise in humidity TYPICAL THERMOS...

Page 22: ...parate branch circuit fed directly from the meter panel and properly fused Refer to the Typical Field Wiring Figure 5 and to the appropriate unit wiring diagram for control circuit and power wiring information 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 and thermostat wiring to t...

Page 23: ...burner assembly can be removed for maintenance without disturbing the supply line The supply piping and fittings must lie below the bottom gas manifold to avoid interference with the burner assem bly Two grommets are shipped in the blower compartment in parts bag taped to the blower housing of every unit with gas heat and should be used in the knockouts when the gas piping penetrates the front of ...

Page 24: ... gas supply connection to the fur nace L P 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 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 Associ ation For satisfactory operation L P p...

Page 25: ...r fasteners and the screws used for mounting the hood to the panel The top flange of this hood slips in under the top of the access panel opening when install ing Refer to Vent and Combustion Air Hood Figure 8 Each vent hood is installed by inserting the top flange of the hood into the slotted opening in the access panel and securing in place The products of combustion are discharged horizon tally...

Page 26: ...ing to the lettered curve of the Enthalpy Setpoint Adjustment Figure 9 For a dual enthalpy operation carefully turn the setpoint adjusting screw fully clockwise past the D setting POWER EXHAUST DAMPER SETPOINT WITH OR WITH OUT POWER EXHAUST With no power exhaust option adjust the Exhaust Air Adjustment Screw fully clockwise This will allow 2nd stage cooling to operate With power exhaust option eac...

Page 27: ...D C C B B A A CONTROL CURVE CONTROL POINT APPROX 0 F 0 C AT 50 RH A D C B 63 17 73 23 70 21 67 19 FIGURE 10 HONEYWELL ECONOMIZER CONTROL W7212 N1 N P1 P EXH Set EXH Min Pos IAQ Max IAQ IAQ Min Free Cool T T1 AQ1 AQ SO SO SR SR A B C D TR TR1 24 Vac HOT 24 Vac COM EF EF1 2 3 4 5 1 Exhaust Air Adjustment Screw Exhaust Air LED Damper Min Position Screw Indoor Air Quality Max Adjustment Screw Indoor A...

Page 28: ...961 961 514 300 Elec 3050 532 993 993 532 Unit Size Operating Weight1 6 Point Loads lbs A B C D E F 180 Gas 2850 324 338 485 632 605 465 240 Gas 3150 366 366 525 684 684 525 300 Gas 3250 378 378 542 706 706 542 180 Elec 2650 301 315 451 588 563 432 240 Elec 2950 343 343 492 641 641 492 300 Elec 3050 354 354 508 662 662 508 1 Weight includes unit economizer economizer rain hood and high option heat...

Page 29: ...EEP 2 FINS PER INCH 13 FACE AREA Sq Ft 17 2 COMPRESSOR QTY PER UNIT SCROLL 2 FILTERS QUANTITY PER UNIT 16 X 25 X 2 4 QUANTITY PER UNIT 16 X 20 X 2 4 TOTAL FACE AREA Sq Ft 20 CHARGE REFRIGERANT 22 Lb Oz SYSTEM No 1 22 8 27 0 25 0 SYSTEM No 2 22 0 27 0 24 8 OPERATING WEIGHTS LBS BASIC UNIT COOLING ONLY 2360 2660 2760 GAS ELECTRIC N24 2560 2860 2960 N32 2600 2900 3000 OPTIONS DOUBLE WALL 260 ECONOMIZ...

Page 30: ... None 0 0 110 4 125 E18 18 0 1 43 3 110 4 125 E36 36 0 2 86 6 133 3 150 E54 54 0 2 129 9 154 9 175 E72 72 0 2 173 2 198 2 225 460 17 3 114 1 9 10 0 0 0 None 0 0 56 5 70 E18 18 0 1 21 7 56 5 70 E36 36 0 2 43 3 66 6 70 E54 54 0 2 65 0 77 5 90 E72 72 0 2 86 6 99 1 110 575 13 5 80 1 5 8 2 0 0 None 0 0 44 6 50 E18 18 0 1 17 3 44 6 50 E36 36 0 2 34 6 53 6 60 E54 54 0 2 52 0 62 2 70 E72 72 0 2 69 3 79 5 ...

Page 31: ...None 0 0 117 150 E18 18 0 1 43 3 117 150 E36 36 0 2 86 6 141 5 150 E54 54 0 2 129 9 163 2 175 E72 72 0 2 173 2 206 5 225 460 17 3 114 1 9 13 3 0 0 None 0 0 59 8 70 E18 18 0 1 21 7 59 8 70 E36 36 0 2 43 3 70 8 80 E54 54 0 2 65 0 81 6 90 E72 72 0 2 86 6 103 2 110 575 13 5 80 1 5 10 3 0 0 None 0 0 46 7 60 E18 18 0 1 17 3 46 7 60 E36 36 0 2 34 6 56 2 60 E54 54 0 2 52 0 64 8 70 E72 72 0 2 69 3 82 2 90 ...

Page 32: ... 20 0 0 0 None 0 0 140 8 175 E18 18 0 1 43 3 140 8 175 E36 36 0 2 86 6 140 8 175 E54 54 0 2 129 9 154 9 175 E72 72 0 2 173 2 198 2 225 460 19 6 125 1 9 10 0 0 0 None 0 0 61 7 80 E18 18 0 1 21 7 61 7 80 E36 36 0 2 43 3 66 6 80 E54 54 0 2 65 0 77 5 90 E72 72 0 2 86 6 99 1 110 575 15 8 100 1 5 8 2 0 0 None 0 0 49 8 60 E18 18 0 1 17 3 49 8 60 E36 36 0 2 34 6 53 6 60 E54 54 0 2 52 0 62 2 70 E72 72 0 2 ...

Page 33: ...10 0 None 0 0 120 4 150 E18 18 0 1 43 3 120 4 150 E36 36 0 2 86 6 145 8 150 E54 54 0 2 129 9 167 4 175 E72 72 0 2 173 2 210 7 225 460 17 3 114 1 9 10 0 5 0 None 0 0 61 5 70 E18 18 0 1 21 7 61 5 70 E36 36 0 2 43 3 72 9 80 E54 54 0 2 65 0 83 7 90 E72 72 0 2 86 6 105 4 110 575 13 5 80 1 5 8 2 4 0 None 0 0 48 6 60 E18 18 0 1 17 3 48 6 60 E36 36 0 2 34 6 58 6 60 E54 54 0 2 52 0 67 2 70 E72 72 0 2 69 3 ...

Page 34: ...0 None 0 0 127 0 150 E18 18 0 1 43 3 127 0 150 E36 36 0 2 86 6 154 0 175 E54 54 0 2 129 9 175 7 200 E72 72 0 2 173 2 219 0 225 460 17 3 114 1 9 13 3 5 0 None 0 0 64 8 80 E18 18 0 1 21 7 64 8 80 E36 36 0 2 43 3 77 0 80 E54 54 0 2 65 0 87 8 90 E72 72 0 2 86 6 109 5 110 575 13 5 80 1 5 10 3 4 0 None 0 0 50 7 60 E18 18 0 1 17 3 50 7 60 E36 36 0 2 34 6 61 2 70 E54 54 0 2 52 0 69 8 70 E72 72 0 2 69 3 87...

Page 35: ... 20 0 10 0 None 0 0 150 8 175 E18 18 0 1 43 3 150 8 175 E36 36 0 2 86 6 150 8 175 E54 54 0 2 129 9 167 4 175 E72 72 0 2 173 2 210 7 225 460 19 6 125 1 9 10 0 5 0 None 0 0 66 7 80 E18 18 0 1 21 7 66 7 80 E36 36 0 2 43 3 72 9 80 E54 54 0 2 65 0 83 7 90 E72 72 0 2 86 6 105 4 110 575 15 8 100 1 5 8 2 4 0 None 0 0 53 8 60 E18 18 0 1 17 3 53 8 60 E36 36 0 2 34 6 58 6 60 E54 54 0 2 52 0 67 2 70 E72 72 0 ...

Page 36: ...TE A 1 clearance must be provided between any combustible material and the supply air ductwork for a distance of 3 feet from the unit The products of combustion must not be allowed to accumulate within a confined space and recirculate Locate unit so that the vent air outlet hoods are at least Three 3 feet above any forced air inlet located within 10 horizontal feet ex cluding those integral to the...

Page 37: ...tments to gain access to the bottom supply and return air duct covers 2 Remove and discard the bottom duct covers Duct open ings are closed with sheet metal covers except when the unit includes a power exhaust option The covering con sists of a heavy black paper composition 3 Replace the side supply and return air compartment pan els For side duct application 1 Replace the side panels on the suppl...

Page 38: ...static pressure and BHP Since no temperature data is given we will assume an air temperature of 70 F Table 14 shows the correction factor to be 0 832 Corrected static pressure 1 5 x 0 832 1 248 IWC Corrected BHP 4 0 x 0 832 3 328 Example 2 A system located at 5 000 feet of elevation is to deliver 6 000 CFM at a static pressure of 1 5 Use the unit blower tables to select the blower speed and the BH...

Page 39: ...127915 YIM A 0405 Unitary Products Group 39 FIGURE 13 ALTITUDE TEMPERATURE CONVERSION FACTOR ...

Page 40: ...5610 935 2 840 3 41 5364 902 2 537 3 04 5016 870 2 167 2 60 4704 837 1 978 2 37 4374 804 1 734 2 08 4081 772 1 464 1 76 0 8 5205 937 2 600 3 12 4912 904 2 345 2 81 4534 873 1 956 2 35 4208 838 1 740 2 09 3896 805 1 542 1 85 3437 773 1 235 1 48 1 0 4767 938 2 371 2 85 4436 905 2 172 2 61 4009 874 1 749 2 10 3598 840 1 533 1 84 3175 807 1 26 1 51 2665 774 0 987 1 18 1 2 4268 940 2 130 2 56 5 turns 6...

Page 41: ...916 2 783 3 34 5257 883 2 486 2 98 4916 853 2 124 2 55 4610 820 1 938 2 33 4287 788 1 699 2 04 3999 757 1 435 1 72 0 8 5101 918 2 548 3 06 4814 885 2 298 2 76 4443 856 1 917 2 30 4124 821 1 705 2 05 3818 789 1 511 1 81 3368 758 1 210 1 45 1 0 4672 919 2 324 2 79 4347 887 2 129 2 55 3929 857 1 714 2 06 3526 823 1 502 1 80 3112 791 1 235 1 48 2612 759 0 967 1 16 1 2 4183 921 2 087 2 51 15 ton Standa...

Page 42: ... 0 6905 1171 5 247 6 45 6531 1133 4 642 5 71 6223 1095 4 118 5 06 5952 1055 3 658 4 39 5535 1015 3 102 3 72 5144 975 2 686 3 22 4689 936 2 392 2 87 1 2 6583 1172 4 948 6 08 6203 1134 4 397 5 41 5866 1097 3 803 4 56 5585 1057 3 388 4 07 5091 1017 2 899 3 48 4686 976 2 471 2 97 1 4 6252 1175 4 658 5 73 5836 1136 4 057 4 87 5502 1098 3 596 4 32 5166 1058 3 095 3 71 4617 1017 2 598 3 12 1 6 5823 1177 ...

Page 43: ...0 6767 1148 5 14 6 32 6400 1110 4 55 5 59 6099 1073 4 04 4 84 5833 1034 3 58 4 30 5424 995 3 04 3 65 5041 956 2 63 3 16 4595 917 2 34 2 81 1 2 6451 1149 4 85 5 96 6079 1111 4 31 5 30 5749 1075 3 73 4 47 5473 1036 3 32 3 99 4989 997 2 84 3 41 4592 956 2 42 2 91 1 4 6127 1152 4 56 5 61 5719 1113 3 98 4 77 5392 1076 3 52 4 23 5063 1037 3 03 3 64 4525 997 2 55 3 06 1 6 5707 1153 4 24 5 21 5348 1115 3 ...

Page 44: ... 966 4 3 5 45 6643 933 3 836 4 86 6142 900 3 328 4 22 5834 4 866 2 92638 3 71 1 2 7498 1030 5 238 6 64 6936 1000 4 556 5 77 6443 967 3 95 5 01 6104 934 3 496 4 43 5595 901 1 224 1 55 5217 3 867 2 59998 3 29 1 4 6997 1033 4 835 6 13 6429 1001 4 179 5 30 5921 969 3 58 4 54 5406 936 3 098 3 93 4942 902 2 672 3 39 4488 868 2 26746 2 87 1 6 6421 1034 4 443 5 63 5916 1002 3 79 4 80 5296 970 3 21 4 07 46...

Page 45: ...2 5 35 6513 915 3 761 4 77 6022 882 3 263 4 14 5720 849 2 869 3 64 1 2 7351 1010 5 135 6 51 6800 980 4 467 5 66 6317 948 3 876 4 91 5984 916 3 427 4 34 5485 883 1 2 1 52 5115 850 2 549 3 23 1 4 6860 1013 4 74 6 01 6303 981 4 097 5 19 5805 950 3 513 4 45 5300 918 3 037 3 85 4845 884 2 62 3 32 4400 851 2 223 2 82 1 6 6295 1014 4 356 5 52 5800 982 3 716 4 71 5192 951 3 15 3 99 4599 920 2 646 3 35 423...

Page 46: ...210 996 4 82 6 13 6616 962 4 10 5 21 1 4 8262 1126 6 97 8 86 7948 1094 6 24 7 94 7481 1063 5 54 7 04 7132 1029 4 99 6 35 6692 997 4 45 5 66 6122 965 3 77 4 80 1 6 7815 1127 6 54 8 32 7481 1095 5 84 7 42 7024 1063 5 16 6 56 6615 1031 4 60 5 85 5870 997 4 06 5 16 5478 967 3 37 4 28 1 8 7372 1128 6 13 7 79 6927 1097 5 43 6 90 6550 1064 4 84 6 15 6036 1032 4 20 5 34 5518 998 3 67 4 67 4811 966 3 01 3 ...

Page 47: ...6 4 73 6 01 6486 943 4 02 5 11 1 4 8100 1104 6 84 8 69 7792 1073 6 12 7 78 7334 1042 5 43 6 9 6992 1009 4 9 6 23 6561 977 4 36 5 55 6002 946 3 7 4 7 1 6 7662 1105 6 41 8 15 7334 1074 5 73 7 28 6886 1042 5 06 6 44 6485 1011 4 51 5 74 5755 977 3 98 5 06 5371 948 3 3 4 2 1 8 7227 1106 6 01 7 63 6791 1075 5 32 6 77 6422 1043 4 74 6 03 5918 1012 4 12 5 24 5410 978 3 6 4 57 4717 947 2 95 3 76 2 6774 110...

Page 48: ...0 916 4 09 5 77 6480 880 3 7 4 76 5600 844 3 1 3 99 1 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 1 2 7210 1000 5 1 6 51 6140 964 4 2 5 36 5850 954 3 8 4 86 5210 918 3 05 4 29 1 4 6500 1001 4 6 5 87 5480 965 3 6 4 6 1 6 5460 1003 3 9 4 97 5 HP motor Chart shading corresponds to minimum motor horsepower requirements as defined below 6 Turns 10 HP moto...

Page 49: ...2 6 9270 1173 8 9 11 4 8590 1136 7 9 10 1 8120 1101 6 8 8 7 7240 1065 5 7 7 3 6990 1027 5 2 6 6 1 4 9200 1210 9 2 11 7 8480 1174 7 9 10 1 8070 1039 7 1 9 1 7340 1103 6 1 7 8 6820 1066 5 3 6 8 6100 1029 4 8 6 1 1 6 8400 1213 8 4 10 7 7750 1177 7 2 9 2 7560 1140 6 5 8 3 7220 1103 5 9 7 5 5380 1069 4 2 5 4 1 8 7830 1215 7 7 9 8 7600 1178 7 8 9 6600 1142 5 6 7 1 5810 1106 4 7 6 0 2 7300 1216 7 8 9 630...

Page 50: ...D STATIC RESISTANCE OF RETURN DUCTWORK IWG 0 2 0 3 0 4 0 5 0 6 CFM KW CFM KW CFM KW CFM KW CFM KW HIGH 5250 0 83 4500 0 85 4200 0 88 3750 0 93 3000 0 99 MEDIUM 4900 0 77 3900 0 79 3500 0 82 2900 0 85 LOW 4400 0 72 3700 0 74 3000 0 78 TABLE 27 BLOWER MOTOR AND DRIVE DATA MODEL SIZE DRIVE BLOWER RANGE RPM MOTOR1 ADJUSTABLE MOTOR PULLEY FIXED BLOWER PULLEY BELT NOTCHED HP FRAME EFF DESIG NATION OUTSI...

Page 51: ...mperatures making the chart above inaccurate 2 This chart is applicable to unit with the TXV s left to the factory setting If the TXV s have been adjusted in the field The charging chart may no longer apply 75º 65º FIGURE 15 CHARGING CHART 20 TON DR240 Charging Chart 150 170 190 210 230 250 270 290 310 330 350 60 65 70 75 80 85 90 Suction Pressure psi Outdoor Temp ºF 115º 105º 95º 85º 75º 65º Both...

Page 52: ...290 310 330 350 55 60 65 70 75 80 85 115º 105º 95º 85º 75º 65º Outdoor Temp ºF Suction Pressure psi Discharge Pressure psi Both fans must be running when charging the unit One fan may switch off at low ambient temperatures making this chart inaccurate Scroll compressors require proper rotation to operate correctly Do not change the internal wiring to make the blower condenser fans or compressor ro...

Page 53: ...tubes and reinstall the two 5 16 dot plugs that were removed in Step 1 NOTE DE ENERGIZE THE COMPRESSORS BE FORE TAKING ANY TEST MEASUREMENTS TO ASSURE A DRY INDOOR COIL OPERATION SEQUENCE OF OPERATIONS OVERVIEW For these units the thermostat makes a circuit 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 o...

Page 54: ...on the room thermostat is set in the AUTO position and drives the economizer damp ers from fully closed to their minimum position If the enthalpy of the outdoor air is below the setpoint of the enthalpy controller previously determined Y1 ener gizes the economizer The dampers will modulate to maintain a constant supply air temperature as moni tored by the discharge air sensor If the outdoor air en...

Page 55: ...the other compressor is idle stop the condenser fans If the call for cooling is still present at the conclusion of the ASCD the UCB will re energize the halted com pressor Should a low pressure switch open three times within one hour of operation the UCB will lock out the associ ated compressor and flash a code Table 33 If the other compressor is inactive the condenser fans will be de energized FR...

Page 56: ...the user to select two different modes of operation via a jumper connection on the board See Figure 19 Each mode is described below Refer to Figures 19 21 when reading this sec tion NORMAL MODE When the reheat control board RCB detects a need for dehumidification 24VAC at HUM via the field supplied dehumidistat connected to RHTB 1 and RHTB 2 and there is not a call for cooling it energizes the hot...

Page 57: ...de energizes SOL 3 and SOL 2 and energizes SOL 1 Both circuits operate in the cooling mode Indoor blower operation is initiated upon a call for first stage cooling second stage cooling or dehumidification Anytime there is a call for 2 stages of cooling the unit will not operate in the reheat mode even if there is still a call for dehumidification at HUM The unit will not operate in the reheat mode...

Page 58: ...ONTROLS PART 1 UCB UNIT CONTROL BOARD RHB REHEAT CONTROL BOARD RHTB REHEAT TERMINAL BLOCK HUM HUMIDIFY TERMINAL RHR REHEAT RELAY FIGURE 21 REHEAT CONTROLS PART 2 REHEAT SOLENOID 3 REHEAT SOLENOID 1 REHEAT SOLENOID 2 RHB REHEAT CONTROL BOARD UCB UNIT CONTROL BOARD ...

Page 59: ...ified fan on delay for heating the UCB will energize the blower motor If the second stage of heat is required heater con tactor 7M will be energized Note that on the 54 KW 240V heater heater contactors 7M 8M will be energized and on the 72 KW 240V heater heater contactors 8M 9M will be energized After completing the specified fan on delay for heating the UCB will energize the blower motor b The th...

Page 60: ...rature Limit Switch TLS 3 4 5 and 6 This control is located inside the heater compart ment and is set to open at the temperature indi cated in the Limit Control Setting Table 28 It is a manual reset limit These limit switches will de energize the heaters should the primary limit fail to open or the contactors fail to open in a failure mode FLASH CODES The UCB will initiate a flash code associated ...

Page 61: ...d energizing the second stage ignition module IC2 IC2 will immedi ately start the second stage igniter sparking and will open the redundant valve located inside the second stage main gas valve GV2 to allow a flow of gas to the second stage carryover tube Only after the pilot flame has been ignited and the presence of pilot flame detected at IC2 by a signal sent back through the flame sensor is spa...

Page 62: ... Setting Table 30 It resets automatically The limit switch operates when a high temperature condition caused by inadequate supply air flow occurs thus shutting down the ignition control and closing the main gas valves and energizing the blower 2 Centrifugal Switch CS If the draft motor should fail the centrifugal switch attached to the shaft of the motor prevents the igni tion controls and gas val...

Page 63: ...ral informa tion section Check blower drive belt tension 6 Check the unit supply air CFM See CHECKING SUPPLY AIR CFM on page 52 7 Measure evaporator fan motor s amp draw 8 Set the room thermostat fan switch to off 9 Turn unit electrical power off OPERATING INSTRUCTIONS 1 Turn unit electrical power on 2 Set the room thermostat setting to lower than the room temperature 3 First stage compressors wil...

Page 64: ...g section is operating make the following checks 1 Check for gas leaks in the unit piping as well as the supply piping 2 Check for correct manifold gas pressures See Checking Gas Input page 65 3 Check the supply gas pressure It must be within the limits shown on rating nameplate Supply pres sure should be checked with all gas appliances in the building at full fire At no time should the standby ga...

Page 65: ...mbly by lifting up and pulling back Burners are now accessible for service Reverse the above procedure to replace the assem blies 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 GAS INPUT NATURAL GAS 1 Turn off all other gas appliances connected to th...

Page 66: ...rmostat fan switch is in the AUTO position 1 Turn the thermostat fan switch to the ON position If the supply air blower motor does not energize go to Step 3 2 If the blower motor runs with the fan switch in the ON position but will not run after the first compres sor has energized when the fan switch is in the AUTO position check the room thermostat for con tact between R and G in the AUTO positio...

Page 67: ...ompressor 2 is always energized in place of compressor 1 when compressor 1 is requested but locked out unless this option has been disabled through computer communications 2 If no economizer is installed or the economizer is not opening to provide free cooling and compres sor 1 does not energize on a call for cooling check for line voltage at the compressor contactor M1 and that the contactor is p...

Page 68: ... test discon nect the Mate N Locks and jumper between the WHITE and YELLOW wires of the UCB s Mate N Lock plug If compressor 1 energizes there is a fault in the economizer wiring or actuator 14 The UCB can be programmed to lock out compres sor operation during free cooling and in low ambi ent conditions These options are not enabled by default Local distributors can test the UCB for this programmi...

Page 69: ...e programmed to lock out compres sor operation during free cooling and in low ambi ent conditions These options are not enabled by default Local distributors can test the UCB for this programming 12 If none of the above corrected the error test the integrity of the UGB Disconnect the C2 terminal wire and jumper it to the Y2 terminal DO NOT jump the Y2 to C2 terminals If the compressor engages the ...

Page 70: ...present at the Y1 OUT terminal check for 24 volts at the Y1 ECON terminal If 24 volts is not present check for loose wiring from the Y1 OUT terminal to the Mate N Lock plug the jumper in the Mate N Lock plug and in the wiring from the Mate N Lock plug to the Y1 ECON terminal For units with economizers If 24 volts is present at the Y1 OUT terminal check for 24 volts at the Y1 ECON terminal If 24 vo...

Page 71: ...olts from the room thermostat If 24 volts is not present from the room thermostat check for the following a Proper operation of the room thermostat contact between R and G with the fan switch in the ON position and in the AUTO position during operation calls b Proper wiring between the room thermostat and the UCB c Loose wiring from the room thermostat to the UCB 8 If 24 volts is present at the ro...

Page 72: ...heck for 24V at RW1 and RW2 relay coils If these relays are pulled in then check for a loose connection at terminal 2 and terminal 4 of each relay If no problem is found then replace RW1 and or RW2 as required 7 If 24 volts is present at the ignitor controls check all control wiring at the ignitor controls and the high tension wire to the ignitors Check that the ground wires from the ignitor contr...

Page 73: ...l board flashes a 1 second on 1 second off heartbeat during normal operation This is to verify that the UCB is functioning correctly Do not confuse this with an error flash code To prevent confusion a 1 flash flash code is not used Current alarms or active restrictions are flashed on the UCB LED Pressing and releasing the ALARMS button on the UCB can check the alarm history The UCB will cycle thro...

Page 74: ...DES FLASH CODES DESCRIPTION On Steady This is a Control Failure 1 Flash Not Applicable 2 Flashes Hot Gas Reheat is on with Y1 Output No Call for Cooling 3 Flashes Y1 Y2 and Hot Gas Reheat is on because of a call for Y1 and Humidistat See alt operation OFF No Power or Control Failure ...

Page 75: ...127915 YIM A 0405 Unitary Products Group 75 ...

Page 76: ...ct 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 OK Group Drive 73069 ...

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