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York B3CH 048 and 060 Heat Pump User Manual

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1. T 3 Minimum 76 2 mm ae FIGURE 16 CONDENSATE DRAIN COMPRESSORS The compressors are mounted on elastomer insulators The mounting bolts have been fully tightened for shipping A CAUTION Do not loosen the compressor mounting bolts FILTERS Two inch filters are supplied with each unit One inch filters may be used with no modification to the filter racks Filters must always be installed ahead of evaporator coil and must be kept clean or replaced with same size and type Dirty fil ters reduce the capacity of the unit and result in frosted coils or safety shutdown All units use four 4 20 x25 x2 filters The unit should not be operated without filters properly installed A CAUTION Make sure that panel latches are properly positioned on the unit to maintain an airtight seal THERMOSTAT WIRING The thermostat should be located on an inside wall approxi mately 56 inches above the floor where it will not be subject to drafts sun exposure or heat from electrical fixtures or appliances Follow the manufacturer s instructions enclosed with thermostat for general installation procedure Seven 7 color coded insulated wires should be used to connect the thermostat to the unit Refer to Table 7 for control wire sizing and maximu
2. 11 HIGH PRESSURE LIMIT SWITCH DUCTWORK 13 LOW PRESSURE LIMIT SWITCH DUCT COVERS s 3 3 n n 9 s n 3 sn 3 3 3 3 s 13 FREEZESTAT PPP CONDENSATE DRAIN 15 LOW AMBIENT COOLING 55 85 15 SAFETY CONTROLS FILTERS BEARES eife 15 COMPRESSOR PROTECTION THERMOSTAT WIRING 15 FLASH 8 POWER AND CONTROL WIRING 15 RESET E coisas E sale ous ote POWER WIRING DETAIL 16 HEATING SEQUENCE OF FACTORY INSTALLED OPTIONS ELECTRIC HEAT OPERATION ERRORS FIELD INSTALLED ACCESSORIES 19 ELECTRIC HEAT 19 SAFETY 18 ELECTRIC HEAT 19 LIMIT SWITCH LS MOTORIZED OUTDOOR 20 FLASH 8 2 20 POWER 6 20 ELECTRIC HE
3. 10 18 FIELD WIRING 24 VOLT THERMOSTAT 17 7 UNIT CENTER OF 10 19 FIELD WIRING 17 8 UNIT DIMENSIONS 11 20 ENTHALPYSETPOINTCHART 21 9 BOTTOM DUCT OPENINGS 12 21 HONEYWELL ECONOMIZER CONTROL W7212 22 10 REAR DUCT DIMENSIONS 13 22 BELTADJUSTMENT 23 11 PREDATOR ROOF CURB DIMENSIONS 14 23 81 12 SUNLINE TO PREDATOR TRANSITION 24 UNIT CONTROL BOARD 40 ROOF CURBS 14 Unitary Products Group 3 66307 YIM B 0606 LIST OF TABLES Pg Tbl Pg 1 UNIT TEMPERATURE LIMITATIONS 9 20 BLOWER PERFORMANCE 10 TON OPTIONAL MOTOR SIDE DUCT METRIC 26 2 UNIT VOLTAGE LIMITATIONS 9 21 BLOWER PERFORMANCE 7 1 2 TON 3 UNIT WEIGHTS 10 STANDARD MOTOR DOWNSHOT IMPERIAL 27 4 4 POINT LOAD WEIGHT Oc 10 22 BLOWER PERFORMANCE T 1 2 TON 5 6 POINT LOAD WEIGHT 10 STANDARD MOTOR DOWNSHOT METRIC 27 6 UNITCLEARANCES 11 23 BLOWER PERFORMANCE 7 1 2 OPTIONAL MOTOR DOWNSHOT IMPERIAL 27 7 CONTROL WIRE 517 15 24 BLOWER PERFORMANCE 7 1 2 TON 8 ELECTRICAL DATA 7
4. 122275 short cycle delay the electric heat when RO ems ise installed will be energized immediately i upon the call for W2 SD FIGURE 18 FIELD WIRING 24 VOLT THERMOSTAT TERMINAL BLOCK TB1 2 2 FIELD SUPPLIED GROUND WG oo 2 MEM Qo O T i ME THREE BW 220 PHASE rori POWER i MEE SUPPLY FIGURE 19 FIELD WIRING DISCONNECT Unitary Products Group 17 66307 YIM B 0606 TABLE 8 ELECTRICAL DATA 7 1 2 TON HP MCA i i Max Fuse OD Supply Air Pwr Minimum Circuit with Power Tu E i Compressors Fan BLower Exh Ampacity Amps Exhaust Size w Pwr Exh Voltage Motors Motor FLA Motor Electric Heater Actual Heater pacity Amps Amps Amps Model No Kw Amps RLA LRA FLA 1 5 HP 2HP FLA 1 5HP 2HP 15HP 2HP 1 5 2HP 1 5 2HP ea ea ea 1 1 kW 1 5 kW 1 1 kW 1 5 kW 1 1 kW 1 5 kW 1 1 kW 1 5 kW 1 1 kW 1 5 kW None 25 2 26 1 27 4 28 3 30 30 35 35 2TP04520950 5 6 8 5 35 8 36 7 38 0 38 9 40 40 40 45 380 8 3 62 1 1 4 3 5 2 2 2 2TP04521850 11 3 17 2 46 6 47 5 48 8 49 7 50 50 50 50 2 04522450 15 0 22 8 53 7 54 6 55 9 56 8 60 60 60 60 2 04523650 21 3 32 4 65 6 66 5 67 8 68 7 70 70 70 70 25 2 26 1 27 4
5. Loose wiring from the room thermostat to the UCB If 24 volts is present at the room thermostat but not at the UCB check for proper wiring between the thermostat and the UCB i e that the thermostat G terminal is con nected to the G terminal of the UCB and for loose wir ing If the thermostat and UCB are properly wired replace the UCB On calls for cooling the supply air blower motor is operating but compressor 1 is not the room thermostat fan switch is in the AUTO position T If installed check the position of the economizer blades If the blades are open the economizer is providing free cooling and the compressors will not immediately oper ate If both stages of cooling are requested simulta neously and the economizer provides free cooling following a short delay compressor 1 will be energized unless it is locked out If compressor 1 is locked out compressor 2 is energized Compressor 2 is always energized in place of compressor 1 when compressor 31 is requested but locked out If no economizer is installed or the economizer is not opening to provide free cooling and compressor 1 does not energize on a call for cooling check for line voltage at the compressor contactor M1 and that the contactor is pulled in Check for loose wiring between the contac tor and the compressor If M1 is pulled in and voltage is supplied at M1 lightly touch the compressor housing If it is hot the compres sor ma
6. MOTORIZED OUTDOOR AIR DAMPERS This system operation is the same as the units with no out door air options with one exception When the R to G cir cuit is complete the motorized damper drives open to a position set by the thumbwheel on the damper motor When the R to G circuit is opened the damper spring returns fully closed COOLING OPERATION ERRORS Each cooling system is monitored for operation outside of the intended parameters Errors are handled as described below All system errors override minimum run times for compressors HIGH PRESSURE LIMIT SWITCH During cooling operation if a high pressure limit switch opens the UCB will de energize the associated compressor initiate the ASCD Anti short cycle delay and if 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 compressor Should a high pressure switch open three times within two hours of operation the UCB will lock out the associated com pressor and flash a code see Table 38 If the other com pressor is inactive the condenser fans will be de energized LOW PRESSURE LIMIT SWITCH The low pressure limit switch is not monitored during the ini tial 30 seconds of a cooling system s operation For the fol lowing 30 seconds the UCB will monitor the low pressure switch to ensure it closes If the low pressure switch fails to close after the 30
7. OPTIONAL MOTOR SIDE DUCT Turns Open ESP 0 1 2 3 4 5 3 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out mS kw 75 kw 7778 kw kw 75 kw kw 775 kw kw 7775 kw kW 100 1 91 1 83 1 46 1 75 1 56 1 25 149 4 90 1 93 1 55 1 74 1 67 133 158 142 1 14 199 188 203 1 63 172 175 140 1 54 1 50 120 135 126 1 01 249 1 87 245 172 1 69 1 83 147 151 157 126 128 1 31 105 299 179 220 176 167 194 155 143 1 63 130 1 10 129 1 03 349 159 200 160 137 167 134 z 399 120 1 64 131 5 5 TABLE 17 BLOWER PERFORMANCE 10 STANDARD MOTOR SIDE DUCT IMPERIAL Turns Open ed 0 1 2 3 4 5 watts Watts Watts Watts Watts BHP Watts BHP 0 4 4820 2675 2 87 4582 2362 2 53 4319 2080 2 23 4086 1842 1 98 3863 1648 1 77 3590 1430 1 53 0 6 4522 2496 2 68 4307 2215 2 38 4025 1941 2 08 3713 1678 1 80 3464 1499 1 61 3149 1291 1 38 08 4223 2332 2 50
8. 2 299 138 1 71 1 37 E 28 Unitary Products Group 66307 0606 TABLE 27 BLOWER PERFORMANCE 10 OPTIONAL MOTOR DOWNSHOT IMPERIAL Turns Open me 0 1 2 3 4 5 CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP 0 2 2 4966 2666 2 86 4605 2290 2 46 0 4 E 4919 2473 2 65 4721 2515 2 70 4344 2145 2 30 0 6 E 4929 3022 3 24 4665 2324 2 49 4450 2353 2 52 4048 1991 2 13 0 8 4908 3197 3 43 4668 2841 3 05 4391 2171 2 33 4151 2183 2 34 3717 1829 1 96 1 0 4915 3456 3 71 4651 3013 3 23 4388 2656 2 85 4096 2015 216 3825 2008 2 15 3352 1664 1 78 1 2 4653 3253 3 49 4377 2823 3 03 4089 2467 2 65 3779 1858 1 99 3471 1830 1 96 2951 1499 1 61 1 4 4372 3046 3 27 4087 2631 2 82 3771 2277 2 44 3442 1703 1 83 3090 1652 1 77 1 6 4070 2837 3 04 3780 2437 2 61 3434 2089 2 24 3084 1552 1 66 1 8 3748 2629 2 82 3455 2243 2 41 3078 1904 2 04 2 0 3406 2
9. 2593 1101 1 18 1 0 3086 1480 1 59 2679 1269 1 36 2154 1059 1 14 TABLE 14 BLOWER PERFORMANCE 7 1 2 TON STANDARD MOTOR SIDE DUCT METRIC Turns Open ESP 0 1 2 3 4 5 Pa 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out m s kw 75 kw kw 775 kw amp w ms kw 75 kw kw 5 KW 50 1 75 1 38 1 11 1 66 1 25 1 00 100 1 69 1 42 1 14 1 55 1 24 0 99 1 46 1 12 0 90 149 1 62 1 45 1 16 1 50 1 28 1 02 1 33 1 10 0 88 1 20 0 98 0 78 199 1 56 1 49 1 19 1 40 1 29 1 03 1 22 1 10 0 88 249 1 46 1 48 1 18 1 26 1 27 1 02 1 02 1 06 0 85 TABLE 15 BLOWER PERFORMANCE 7 1 2 TON OPTIONAL MOTOR SIDE DUCT IMPERIAL Turns Open ad 0 1 2 3 4 5 CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP 0 4 4052 1830 1 96 3715 1559 1 67 0 6 4016 1933 2 07 3677 1667 1 79 3342 1422 1 52 0 8 3991 2032 2 18 3639 1745 1 87 3270 1504 1 61 2858 1261 1 35 1 0 3953 2151 2 31 3576 1833 1 97 3191 1573 1 69 2702 1307 1 40 1 2 3802 2195 2 35 3544 1941 2 08 3040 1626 1 74 2327 1290 1 38 1 4 3379 2001 2 15 2913 1674 1 80 1 6 2552 1642 1 76 24 Unitary Products Group 66307 0606 TABLE 16 BLOWER PERFORMANCE 7 1 2
10. 55 57 59 61 63 65 67 69 71 73 75 65 41 0 40 9 40 7 40 6 40 5 40 4 40 3 40 1 40 0 39 9 39 8 70 38 3 38 2 38 2 38 2 38 1 38 1 38 1 38 0 38 0 38 0 37 9 75 35 6 35 6 35 7 35 7 35 8 35 8 35 9 35 9 36 0 36 0 36 1 80 25 7 26 7 27 6 28 5 29 5 30 4 31 3 32 3 33 2 34 1 35 1 85 15 9 17 7 19 5 21 3 23 2 25 0 26 8 28 6 30 4 32 3 34 1 90 14 4 16 1 17 8 19 5 21 1 22 8 24 5 26 2 27 9 29 5 31 2 95 13 0 14 5 16 0 17 6 19 1 20 7 22 2 23 7 25 3 26 8 28 4 100 9 8 11 4 13 0 14 5 16 1 17 7 19 3 20 9 22 5 24 0 25 6 105 6 6 8 2 9 9 11 5 13 1 14 8 16 4 18 0 19 6 21 3 22 9 110 4 6 5 9 7 2 8 5 9 8 11 1 12 4 13 7 14 9 16 2 17 5 115 2 5 3 5 4 5 5 4 6 4 7 4 8 3 9 3 10 3 11 2 12 2 TROUBLESHOOTING PREDATOR FLASH CODES Various flash codes are utilized by the unit control board UCB to aid in troubleshooting Flash codes are distinguished by the short on and off cycle used approximately 200ms on and 200ms off To show normal operation the control 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 Alarm condition codes are flashed on the UCB lower left Red LED See Figure 23 While the alarm code is being flashed it will also be shown by the other LEDs lit continuously while the alarm is being flashed The total of the continuously lit LEDs equates to the number of flashes and is show
11. 2 00 3014 1611 1 73 2614 1372 1 47 2146 1151 123 1 2 3227 1931 2 07 2938 1682 1 80 2572 1457 1 56 2082 1227 1 32 s 14 2778 1733 1 86 2461 1506 1 61 1 6 2279 1522 163 i Unitary Products Group 27 66307 YIM B 0606 TABLE 24 BLOWER PERFORMANCE 7 1 2 TON OPTIONAL MOTOR DOWNSHOT METRIC Turns Open ESP 0 1 2 3 4 5 Pa 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out kw m s kw kw 75 w kw 778 kw 75 qw 778 kw 50 183 175 140 1 70 1 52 122 100 181 184 147 1 69 1 62 130 1 55 140 1 12 149 191 220 176 1 78 193 1 54 1 65 1 69 1 35 150 147 1 18 135 1 26 1 01 199 176 204 1 63 1 61 177 142 146 1 53 122 128 131 105 1 11 112 0 90 249 1 71 2 11 169 1 59 186 149 142 1 61 1 29 123 137 1 10 101 1 15 092 299 1 52 1 93 154 139 1 68 135 121 146 1 17 0 98 123 0 98 349 1 31 1 73 139 116 151 120 2 399 1 08 1 52 122 3 3 TABLE 25 BLOWER PERFORMANCE 10 STANDARD MOTOR D
12. 2 02 69 5 12 4 57 1 59 6 69 5 72 0 88 4 2 12 74 5 12 4 62 1 64 6 74 5 77 0 91 9 2 21 82 0 12 4 69 5 72 0 82 0 84 4 99 3 2 30 89 4 12 4 74 5 77 0 86 9 91 9 106 8 2 40 96 9 14 9 82 0 84 4 94 4 99 3 114 2 2 49 104 3 14 9 86 9 91 9 101 8 106 8 121 7 Add these resistance values to the available static resistance in the respective Blower Performance Tables t Deduct these resistance values from the available external static pressure shown the respective Blower Performance Table The pressure drop through the economizer is greater for 10096 outdoor air than for 100 return air If the resistance of the return air duct system is less than 0 25 IWG the unit will deliver less CFM during full economizer operation 32 Unitary Products Group 66307 0606 TABLE 32 MOTOR SHEAVE DATUM 1VM50x7 8 1VP56x1 1 8 1 1 2 amp 2 HP Motor 4 HP Motor Turns Open Turns Open 0 4 4 111 7 5 3 134 6 12 4 3 109 2 5 2 132 1 4 2 106 6 51 1295 1 1 2 4 1 104 1 5 0 127 2 4 0 101 6 4 9 124 4 oe 3 9 99 4 8 121 9 3 3 8 96 5 4 7 119 3 enue 3 7 94 4 6 116 8 3 6 91 4 4 5 114 3 12 44 111 7 3 4 3 109 2 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 dete
13. 2519 1219 1 31 2241 1216 1 30 TABLE 22 BLOWER PERFORMANCE 7 1 2 STANDARD MOTOR DOWNSHOT METRIC Turns Open ESP 0 1 2 3 4 5 Pa 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out kw 7778 kw kw 7775 wy kw 7778 kw kw 7778 kw kw 75 kw kw 50 1 81 1 77 142 167 149 1 19 1 65 1 39 1 11 154 1 23 0 99 1 46 1 12 0 90 100 1 56 148 119 1 69 1 67 134 159 143 1 14 1 50 1 27 1 02 134 111 0 89 126 1 01 0 80 149 1 58 1 51 1 21 1 53 1 54 123 142 1 30 104 128 1 13 0 90 110 0 98 0 78 1 01 0 89 071 199 146 141 113 132 138 110 117 114 091 0 99 098 078 249 1 19 122 0 98 1 06 1 22 0 97 5 TABLE 23 BLOWER PERFORMANCE 7 1 2 OPTIONAL MOTOR DOWNSHOT IMPERIAL Turns Open rud 0 1 2 3 4 5 watts Watts watts Watts watts Watts 0 2 3884 1754 1 88 3611 1520 1 63 0 4 3837 1843 1 98 3576 1624 1 74 3282 1400 1 50 0 6 4054 2201 2 36 3766 1926 2 07 3491 1691 1 81 3183 1473 1 58 2862 1263 1 35 0 8 3735 2037 2 18 3412 1769 1 90 3083 1530 1 64 2707 1311 1 41 2352 1119 1 20 1 0 3626 2112 2 27 3362 1861
14. 72 1 38 2 40 3 60 2 88 2 26 311 248 210 271 2 17 1 89 2 26 181 1 73 1 93 1 54 2 24 3 32 2 65 212 2 89 2 1 1 93 2 47 1 98 1 67 2 01 1 60 1 44 1 64 1 31 E E 2 11 3 11 2 49 1 92 2 62 2 10 1 68 2 16 1 73 1 89 2 78 2 23 1 60 2 22 1 78 i 1 65 248 1 98 i 2 26 Unitary Products Group 66307 0606 TABLE 21 BLOWER PERFORMANCE 7 1 2 STANDARD MOTOR DOWNSHOT IMPERIAL Turns Open 0 1 2 3 4 5 watts BHP Watts BHP Watts BHP Watts BHP Watts BHP Watts BHP 0 2 3838 1772 1 90 3530 1491 1 60 3487 1385 1 49 3260 1234 1 32 3091 1119 1 20 0 4 3299 1485 1 592 3589 1670 1 79 3361 1425 1 53 3173 1275 1 37 2846 1111 1 19 2667 1006 1 08 0 6 3355 1506 1 62 3240 1535 1 65 3012 1301 1 40 2707 1131 1 21 2333 980 1 05 2151 887 0 95 0 8 3095 1409 1 51 2791 1380 1 48 2484 1141 1 22 2088 978 1 05 1 0
15. UCB terminal C1 If 24 volts is present check for loose wiring between C1 and the compressor contactor If 24 volts is not present at the C1 terminal check for 24 volts from the room thermostat at the UCB Y1 terminal If 24 volts are not present at the UCB Y1 terminal the UCB may have faulted Check for 24 volts at the Y1 ECON terminal If 24 volts is not present at Y1 ECON the UCB has faulted The UCB should de energize all compressors on a loss of call for the first stage of cool ing i e a loss if 24 volts at the Y1 terminal If 24 volts are present at the UCB Y1 terminal the com pressor may be out due to an open high pressure switch low pressure switch or freezestat Check for 24 volts at the HPS1 LPS1 and FS1 terminals of the UCB If a switch has opened there should be a voltage potential between the UCB terminals e g if LPS1 has opened there will be a 24 volt potential between the LPS1 termi nals 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 a code If not press and release the ALARMS button on the UCB The UCB will flash the last five alarms on the LED If the compressor is locked out remove any call for cooling This will reset any compres sor lock outs NOTE While the above step will reset any lock outs com 10 pressor 2 will be held off for the ASCD and com
16. pressor 1 may be held off for a portion of the ASCD See the next step If 24 volts is present at the UCB Y1 terminal and none of the switches are open and the compressor is not locked out the UCB may have the compressor in an ASCD Check the LED for an indication of an ASCD cycle The ASCD should time out within 5 minutes Press and release the TEST button to reset all ASCDs 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 terminal of the UCB If 24 volts is Unitary Products Group 43 12 present trace the wiring from Y1 OUT for incorrect wir ing If 24 volts is not present at the Y1 OUT terminal the UCB must be replaced For units without economizers If 24 volts is 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 f 24 volts is present at the Y1 OUT terminal check for 24 volts at the Y1 terminal If 24 volts is not present check for loose wiring from the Y1 OUT terminal to the Mate N Lock plug poor connection between the U
17. 0 14 0 17 0 18 0 22 3500 0 18 0 04 0 15 0 16 0 19 0 20 0 24 3700 0 20 0 04 0 17 0 18 0 21 0 22 0 26 3900 0 23 0 04 0 19 0 20 0 23 0 24 0 28 4100 0 25 0 04 0 21 0 22 0 25 0 26 0 31 4300 0 28 0 05 0 23 0 24 0 28 0 29 0 34 4500 0 30 0 05 0 25 0 26 0 30 0 31 0 37 4700 0 33 0 05 0 28 0 29 0 33 0 34 0 40 4900 0 36 0 05 0 30 0 31 0 35 0 37 0 43 5100 0 39 0 06 0 33 0 34 0 38 0 40 0 46 5300 0 42 0 06 0 35 0 37 0 41 0 43 0 49 Add these resistance values to the available static resistance in the respective Blower Performance Tables t Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table The pressure drop through the economizer is greater for 100 outdoor air than for 100 return air If the resistance of the return air duct system is less than 0 25 IWG the unit will deliver less CFM during full economizer operation TABLE 31 ADDITIONAL STATIC RESISTANCE METRIC I Electric Heat KWt Mes Cooling Only Economizer t 9 18 24 36 54 1 08 19 9 5 0 17 4 19 9 22 4 24 8 32 3 1 18 22 4 5 0 19 9 22 4 24 8 27 3 34 8 1 27 27 3 7 5 22 4 24 8 29 8 32 3 39 7 1 36 29 8 7 5 24 8 27 3 32 3 34 8 44 7 1 46 34 8 TO 29 8 32 3 37 3 39 7 49 7 1 55 39 7 7 5 32 3 34 8 42 2 447 54 6 1 65 44 7 9 9 37 3 39 7 47 2 49 7 59 6 1 74 49 7 9 9 42 2 44 7 52 2 49 7 64 6 1 83 57 1 9 9 47 2 49 7 56 1 59 6 69 5 1 93 62 1 9 9 52 2 54 6 62 1 64 6 77 0
18. 28 3 30 30 35 35 2TP04520950 6 7 9 3 36 8 37 7 39 0 39 9 40 40 40 45 415 8 3 62 14 4 3 5 2 2 2 2TP04521850 13 5 18 8 48 7 49 6 50 9 51 8 50 50 60 60 2 04522450 17 9 24 9 56 3 57 2 58 5 59 4 60 60 60 60 2 04523650 25 4 35 3 69 3 70 2 71 5 72 4 70 80 80 80 Maximum HACR breaker of the same amp size is acceptable TABLE 9 ELECTRICAL DATA 10 TON HP MCA i 1 Max Fuse OD Supply Air Pwr Minimum Circuit with Power TU E s Fan BLower Exh Ampacity Amps Exhaust Size WiPwr Exh Voltage Motors Motor FLA Motor Electric Heater Actual Heater pacity Amps Amps Amps Model No Kw Amps RLA LRA FLA 2HP 4HP FLA 2HP 4HP 2HP 4HP 2HP 4HP 2HP 4HP ea ea ea 1 5 kW 3 kW 1 5 kW 3 kW 1 5 kW 3 kW 1 5 kW 1 5 kW 3 kW None 25 6 27 9 27 8 30 1 30 35 35 35 2 04521850 11 3 17 2 47 1 49 4 49 3 51 6 50 50 50 60 380 8 1 73 0 1 1 5 2 7 5 2 2 2TP04522450 15 0 22 8 54 1 56 4 56 3 58 6 60 60 60 60 2 04523650 21 3 32 4 66 1 68 4 68 3 70 6 70 70 70 80 2HP04535450t 33 8 51 4 70 7 73 6 73 4 76 3 80 80 80 80 25 6 27 9 27 8 30 1 30 35 35 35 2TP04521850 13 5 18 8 49 1 51 4 51 3 53 6 50 60 60 60 415 8 1 73 0 1 1 5 2 7 5 2 2 2TP04522450 17 9 24 9 56 8 59 1 59 0 61 3 60 60 60 70 2 04523650 25 4 35 3 69 8 72 1 72 0 74 3 70 80 80 80 2 045354501 40 4 56 2 76 8 79 6 79 5 82 4 80 80 80 90 Maximum HACR
19. 30 3 30 9 31 6 32 2 33 4 34 5 35 7 36 8 85 26 3 27 1 27 9 28 6 29 4 30 1 30 9 32 2 33 5 34 7 36 0 90 22 0 23 0 23 9 24 9 25 8 26 8 27 8 29 5 31 2 33 0 34 7 95 17 7 18 9 20 0 21 2 22 3 23 5 24 6 26 8 29 0 31 2 33 4 100 13 9 14 9 15 9 17 0 18 0 19 0 20 1 22 5 24 9 27 3 29 8 105 10 0 10 9 11 8 12 8 13 7 14 6 15 5 18 2 20 8 23 5 26 1 110 6 2 7 0 7 8 8 6 9 4 10 2 11 0 13 8 16 7 19 6 22 5 115 5 0 5 7 6 4 9 5 12 6 15 8 18 9 38 Unitary Products Group 66307 0606 TABLE 37 COOLING SUPERHEAT 10 SUCTION SUPERHEAT A WARNING 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 When not necessary shut off all electric power to the unit prior to any of the following maintenance proce dures so as to prevent personal injury CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dan gerous operation which could cause injury to person and or damage unit components Verify proper oper ation after servicing pedis gi INDOOR WB TEMP
20. 3973 2062 2 21 3656 1783 1 91 3363 1550 1 66 3026 1350 1 45 10 3913 2174 2 33 3679 1923 2 06 3262 1619 1 74 2721 1330 143 1 2 3521 1978 212 3104 1693 1 82 z 14 2790 1660 178 TABLE 18 BLOWER PERFORMANCE 10 STANDARD MOTOR SIDE DUCT METRIC Turns Open ESP 0 1 2 3 4 5 3 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out mS kw kw 7778 kw kw 7175 kw kw m s kw kw 778 kw kw 775 kw kw 100 227 268 214 2 16 236 1 89 2 04 2 08 1 66 1 93 1 84 1 47 1 82 1 65 1 32 1 69 1 43 1 14 149 2 13 250 200 203 222 177 1 90 194 155 175 1 68 1 34 163 1 50 120 149 1 29 1 03 199 1 99 233 1 87 188 206 165 173 178 143 1 59 1 55 124 143 135 1 08 5 249 1 85 217 174 174 1 92 154 154 1 62 130 128 133 106 299 1 66 198 1 58 146 1 69 135 5 349 1 32 1 66 133 5 Unitary Products Group 25 66307 YIM B 0606 TABLE 19 BLOWER PERFORMANCE 10 TON OPTIONAL MOTOR SIDE DUCT IMPERIAL Turns Open m 0 1 2 3 4 5 CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP 0 4 i 4960 2495 2 68 0 6
21. Y2 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 a code If not press and release the ALARMS button on the UCB The UCB will flash the last five alarms on the LED If the compressor is locked out remove any call for cooling at the thermostat or by disconnecting the thermostat wiring at the Y2 UCB terminal This will reset any compressor lock outs While the above step will reset any lock outs com pressor 1 will be held off for the ASCD and com pressor 2 may be held off for a portion of the ASCD See the next step If 24 volts is present at the UCB Y2 terminal and none of the switches are open and the compressor is not locked out the UCB may have the compressor in an ASCD Check the LED for an indication of an ASCD cycle The ASCD should time out within 5 minutes Press and release the TEST button to reset all ASCDs The UCB can be programmed to lock out compressor operation during free cooling and in low ambient condi tions These options are not enabled by default Local distributors can test the UCB for this programming For units with factory installed economizers the UCB is programmed to lock out compressor operation when the LAS set point is reached For units without factory installed or with field installed economizers the UCB allows compressor operation all the time This programming can be checked or changed by the lo
22. at terminal MV after six minutes it initiates a fault code 9 indicating a heating problem As mentioned earlier the defrost control DC utilizes a time temperature defrost scheme The following two condi tions must be met before the DC will enter a defrost mode 1 The DC must first satisfy its accumulated minimum run time This is factory set at 60 minutes but is field adjust able to 30 60 or 90 minutes 2 Either of the two defrost thermostats DF1 or DF2 must be closed These normally open thermostats are mounted on the respective liquid lines and are set to close at 31 degrees 3 If neither defrost thermostat is closed at the completion of it s minimum accumulated run time cycle the DC initiates another run time cycle which it must complete before it looks Unitary Products Group 35 66307 YIM B 0606 at the position of the defrost thermostats This action is repeated until at the completion of a run time cycle one of the defrost thermostats is found to be closed and the DC enters defrost mode When the DC enters the defrost mode it s on board defrost relay is powered This energizes both reversing valves de energizes both condenser fan motors and energizes the units optional electric heater The DC remains in defrost mode until either of the following two conditions is met 1 Both of the liquid line thermostats are open Each is set to open at 55 degrees 3 2 The maximum defrost run ti
23. breaker of the same amp size is acceptable t Only 25 4 kW of electric heat can be simultaneously energized with the mechanical heating The full 40 4 kW operates only if both compressors are locked out 18 Unitary Products Group 66307 0606 TABLE 10 PHYSICAL DATA Models Component 090 120 Blower Centrifugal Dia X Wd in Dia X Wd mm 15x 15 381 x 381 15x 15 381 x 381 Evaporator Motor Standard HP kW 1 1 2 1 1 2 1 5 Blower Motor Optional HP kW 2 1 5 4 9 Rows 3 4 Fins per Inch 2 54 cm 15 15 Evaporator Coil p Height in mm 40 1020 40 1020 Face Area ft 2 each 13 2 1 23 13 2 1 23 Propeller Dia in each mm 24 610 24 610 Condenser Fan M HP h kW 4 3 4 56 2 per Unit otor each kW 3 4 56 56 CFM Nominal each 4000 4000 Rows each 1 2 Condenser Coil Fins per Inch 2 54 cm 20 20 2 per unit Height in each mm 44 1120 44 1120 Face Area ft each mm 14 5 1 35 14 5 1 35 Refrigerant System 1 Ib oz kg 9 Ibs 4 oz 4 20 15 lbs 4 oz 6 92 Charge System 2 Ib oz kg 9 Ibs 0 oz 4 06 15 Ibs 0 oz 6 80 Quantity 2 2 Compressors Type Recip Scroll Size Wd x Ht x Thickness in Wd x Ht x Thickness 25x20x2 25x20x2 Air Filters mm 635 x 508 x 51 635 x 508 x 51 Number Per Unit 4 4 FACTORY INSTALLED OPTIONS FIELD INSTALLED ACCESSORIES ELECTRIC HEAT ACCESSORY Elec
24. level tolerance to 1 2 13 mm across the entire width and length of unit Unitary Products Group 66307 YIM B 0606 RIGGING AND HANDLING TABLE 3 UNIT WEIGHTS Exercise care when moving the unit Do not remove any Model Shipping Weight Ib kg Operating Weight Ib kg packaging until the unit is near the place of installation Rig BP090 1108 503 1103 500 the unit by attaching chain or cable slings to the lifting holes provided in the base rails Spreader bars whose length BP120 1212 550 1207 547 exceeds the largest dimension across the unit MUST be Econ 85 39 84 38 used across the top of the unit wi PE 150 68 148 67 AUTION ai 49 22 49 22 Heat If a unit is to be installed on a roof curb other than a 54kW heater YORK roof curb gasketing must be applied to all surfaces that come in contact with the unit under TABLE 4 4 POINT LOAD WEIGHT side Location Ibs kg Model A B 242 109 207 94 301 137 353 160 265 120 226 103 330 150 386 175 CAUTION 120 Before lifting make sure the unit weight is distrib uted equally on the rigging cables so it will lift evenly TABLE 5 6 POINT LOAD WEIGHT Location 105 kg Units may be moved or lifted with a forklift Slotted openings in the base rails are provided for this purpose A B C 1 14 134 1 217 LENGTH OF FORKS MUST B
25. second monitoring phase the UCB will de energize the associated compressor initiate the ASCD and if the other compressor is idle stop the condenser fans Once the low pressure switch has been proven closed dur ing the 30 second monitor period described above the UCB will monitor the low pressure limit switch for any openings If the low pressure switch opens for greater than 5 seconds the UCB will de energize the associated compressor initiate the ASCD and if the other compressor is idle stop the con denser fans If the call for cooling is still present at the conclusion of the ASCD the UCB will re energize the halted compressor Should a low pressure switch open three times within one hour of operation the UCB will lock out the associated com pressor and flash a code Table 38 If the other compressor is inactive the condenser fans will be de energized FREEZESTAT During cooling operation if a freezestat opens the UCB will de energize the associated compressor initiate the ASCD and if 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 compressor Should a freezestat open three times within two hours of operation the UCB will lock out the associated compressor and flash a code Table 38 If the other compressor is inac tive the condenser fans will be de energized LOW AMBIENT COOLING To determin
26. to the suction line near the compressor so that suction superheat can be calculated The probe must be insulated so the higher surrounding temperatures will not affect the reading A measurement of the outdoor ambient and the indoor wet bulb tempera ture is also required When using a digital temperature probe it is not necessary to insulate the probe because only the probe tip is used for sensing Operate system until temperatures and pressures stabilize minimum of 15 minutes Then measure and record indoor wet bulb WB temperature at the indoor coil Insert a thermometer with a wet sock attached to it into the coil section Record the out door dry bulb DB temperature using a thermometer Measure and record the suction pressure at the suction service port Using the Superheat table note the superheat value corre sponding to the intersection of the indoor wet bulb and the outdoor dry bulb With the superheat value obtained from the table and the suction pressure value previously recorded find the intersection of the values in Suction Tube Temperature Table This is the required suction tube temperature at the suction service valve To bring the tube temperature in line with the required value add refrigerant to the service port to cause the tube temperature to fall and reclaim refrigerant to cause the temperature to rise Unitary Products Group 37 66307 YIM B 0606 TABLE 35 SUPERHEAT CHARGING SUCTION PRESSURE SUCTION TUBE
27. 1 2 18 OPTIONAL MOTOR DOWNSHOT 28 9 ELECTRICAL DATA 10 18 25 BLOWER PERFORMANCE 10 10 PHYSICAL DATA 19 STANDARDIMOTOR 28 26 BLOWER PERFORMANCE 10 TON 11 ELECTRIC HEAT MINIMUM SUPPLY AIR 20 STANDARD MOTOR DOWNSHOT METRIC 28 12 SUPPLY AIR LIMITATIONS 22 27 BLOWER PERFORMANCE 10 TON 13 BLOWER PERFORMANCE 7 1 2 TON OPTIONAL MOTOR DOWNSHOT IMPERIAL 29 STANDARD MOTOR SIDE DUCT IMPERIAL 24 28 BLOWER PERFORMANCE 10 TON OPTIONAL 14 BLOWER PERFORMANCE 7 1 2 TON MOTOR DOWNSHOT 29 STANDARD MOTOR 24 59 INDOOR BLOWER SPECIFICATIONS 29 15 BLOWER PERFORMANCE 7 1 2 TON OPTIONAL MOTOR SIDE DUCT IMPERIAL 24 30 ADDITIONAL STATIC RESISTANCE IMPERIAL 32 16 BLOWER PERFORMANCE 7 1 2 TON 31 ADDITIONAL STATIC RESISTANCE METRIC 32 OPTIONAL MOTOR SIDE DUCT METRIC 25 32 MOTOR SHEAVE 33 17 BLOWER PERFORMANCE 10 TON 33 ELECTRIC HEAT LIMIT SETTING 36 STANDARD MOTOR SIDE DUCT IMPERIAL 25 34 HEAT PUMP ANTICIPATOR SETPOINTS 36 18 BLOWER PERFORMANCE 10 TON STANDARD MOTOR SIDE DUCT METRIC 25 35 SUPERHEAT 38 19 BLOWER PERFORMANCE 10 TON 36 COOLING SUPERHEAT 7 1 2 TON 38 OPTIONAL M
28. 425 2 60 3114 2051 2 20 2 2 3044 2228 2 39 TABLE 28 BLOWER PERFORMANCE 10 TON OPTIONAL MOTOR DOWNSHOT METRIC Turns Open z 0 1 2 3 4 5 In Out In Out In Out In Out In Out In Out ms cw kw m kw 75 kw kw m 5 kw 5 50 2 94 2 67 213 2 17 2 29 1 83 100 2 32 2 47 1 98 2 23 2 51 2 01 2 05 2 15 1 72 149 2 33 3 02 2 42 2 20 2 32 1 86 2 10 2 35 1 88 1 91 1 99 1 59 199 2 32 3 20 2 56 2 20 2 84 2 27 2 07 2 17 1 74 1 96 2 18 1 75 1 75 1 83 1 46 249 2 32 3 46 2 76 2 20 3 01 2 41 2 07 2 66 2 12 1 93 2 01 1 61 1 81 2 01 1 61 1 58 1 66 1 33 299 2 20 3 25 2 60 2 07 2 82 2 26 1 93 2 47 1 97 1 78 1 86 1 49 1 64 1 83 1 46 1 39 1 50 1 20 349 2 06 3 05 2 44 1 93 2 63 2 10 1 78 2 28 1 82 1 62 1 70 1 36 1 46 1 65 1 32 399 1 92 2 84 2 27 1 78 2 44 1 95 1 62 2 09 1 67 1 46 1 55 1 24 448 1 77 2 63 2 10 1 63 2 24 1 79 1 45 1 90 1 52 498 1 61 2 43 1 94 1 47 2 05 1 64 548 1 44 2 23 1 78 TABLE 29 INDOOR SPECIFICATIONS MOTOR MOTOR SHEAVE BLOWER SHEAVE BELT RPM Eff SF Frame Datum Dia Bore in Model Datum Dia in Bore in
29. 5091 2745 2 94 4646 2314 2 48 0 8 5078 2937 3 15 4839 2584 2 77 4347 2153 2 31 1 0 5075 3117 3 34 4767 2730 2 93 4487 2377 2 55 3946 1942 2 08 1 2 5068 3308 3 55 4742 2881 3 09 4427 2513 2 69 4108 2159 2 32 3501 1723 1 85 1 4 5079 3595 3 86 4787 3105 3 33 4452 2713 2 91 4012 2259 2 42 3665 1926 2 07 1 6 4739 3316 3 56 4482 2892 3 10 4098 2474 2 65 3543 2006 2 15 3057 1642 1 76 1 8 4461 3111 3 34 4070 2621 2 81 3552 2160 2 32 2 0 3997 2782 2 98 3400 2219 2 38 2 2 3496 2480 2 66 ESP Pa 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out mS kw 7775 kw kw 7175 kw kw m s kw 778 kw kw 778 kw kw 100 149 199 249 299 349 399 448 498 548 F 234 2 50 2 00 gt 5 5 2 40 2 75 2 20 2 19 2 31 1 85 240 2 94 235 2 28 258 2 07 2 05 2 15 1 72 5 240 312 249 2 25 2 73 218 2 12 2 38 1 90 1 86 1 94 1 55 i 2 39 3 31 265 2 24 2 88 2 30 2 09 2 51 2 01 1 94 2 16 1 73 1 65
30. AT ANTICIPATOR SETPOINTS 20 ECONOMIZER AND POWER EXHAUST SET START UP POINT ADJUSTMENTS AND INFORMATION 20 PRESTART CHECK MINIMUM POSITION ADJUSTMENT 20 OPERATING INSTRUCTIONS ENTHALPY SET POINT ADJUSTMENT 20 POST START CHECK 118 POWER EXHAUST DAMPER SET POINT WITH OR SUPERHEAT CHARGING METHOD WITHOUT POWER EXHAUST 21 INDOOR AIR QUALITY 21 5 22 PREDATORG FLASH CODES BLOWER ROTATION 22 COOLING TROUBLESHOOTING GUIDE 2 Unitary Products Group 66307 0606 LIST OF FIGURES Fig Fig 1 UNIT SHIPPING BRACKET 8 13 SIDE PANELS WITH PLUGS 14 2 CONDENSER COIL COVERING 8 14 RETURN DOWNFLOW PLENUM WITH PANEL 15 3 COMPRESSOR 8 15 DISCHARGE PANEL IN PLACE 15 4 PREDATOR COMPONENT LOCATION 9 16 15 5 1 10 17 ELECTRONIC THERMOSTAT FIELD WIRING 16 6
31. Baro F Std Motor Slab Econo Power Exhaust Downflow Only Std Motor Slab Econo Barometric Relief Downflow Only ZZ desired option combination is not listed above ZZ will be assigned and configuration options will be located in digits 15 18 N Hi Static Mtr P Hi Static Mtr Econo Barometric Relief Downflow Only Installation Options Q Hi Static Mtr Econo Power Exhaust Downflow Only Hi Static Mtr Motorized Damper Downflow Only S Hi Static Mtr Horizontal Economizer No Baro T Hi Static Mtr Slab Econo Power Exhaust Downflow Only U Hi Static Mtr Slab Econo Barometric Relief Downflow only A 7 No Options Installed B Option 1 C Option 2 D Options 1 amp 2 E Option 3 F Option 4 G Options 1 amp 3 Options 1 amp 4 J Options 1 2 amp 3 Options 1 2 amp 4 L Options 1 3 amp 4 M Options 1 2 3 amp 4 P Options 2 amp 4 Q Options 2 3 amp 4 R Options 3 amp 4 S Option 5 T Options 1 amp 5 Options 1 3 amp 5 Options 1 4 amp 5 Options 1 3 4 amp 5 X Options 3 amp 5 Y Options 4 amp 5 Z Options 3 4 amp 5 1 Disconnect 2 Non Pwr d Conv Outlet 3 Smoke Detector S A 4 Smoke Detector 5 Pwr d Conv Outlet Unitary Products Group 66307 YIM B 0606 INSTALLATION INSTALLATION SAFETY INFORMATION Read these instructions before continuing this
32. CB and economizer Mate N Lock plugs loose wiring from the Mate N Lock plug to the economizer back to the Mate N Lock plug and from the Mate N Lock plug to the Y1 ECON termi nal The economizer control may have faulted and is not returning the 24 volts to the Y1 ECON terminal even 13 14 test the economizer control disconnect the Mate N Locks and jumper between the WHITE and YELLOW wires of the UCB s Mate N Lock plug The UCB can be programmed to lock out compressor operation during free cooling and in low ambient condi tions These options are not enabled by default They can be checked by local distributors For units with factory installed economizers the UCB is programmed to lock out compressor operation when the LAS set point is reached For units without factory installed or with field installed economizers the UCB allows compressor operation all the time This programming can be checked or changed by the local distributor If none of the above corrected the error test the integrity of the UCB Disconnect the C1 terminal wire and jumper it to the Y1 terminal DO NOT jump the Y1 to C1 termi nals If the compressor engages the UCB has faulted though the economizer is not providing free cooling To 15 If none of the above correct the error replace the UCB Subject to change without notice Printed in U S A 66307 YIM B 0606 Copyright 2006 by Unitary Products Group All rights reserved Supersedes 66307
33. CFM from the Blower Per formance Table by utilizing the measured External Static Pressure and the number of turns the variable motor sheave is open 7 adjust Measured CFM to Required CFM see SUP PLY AIR DRIVE ADJUSTMENT 8 After readings have been obtained remove the tubes and seal holes NOTE With the addition of field installed accessories repeat this procedure AWARNING Failure to properly adjust the total system air quan tity can result in extensive blower damage 30 Unitary Products Group 66307 0606 Predator 50 Hz Heat Pump Units Indoor Coil Pressure Drop vs Airflow 0 7 0 6 0 5 0 4 7 5 50 2 2 10 50 2 0 3 Dry Cuil Deita 176 0 2 0 1 2000 2500 3000 3500 Airflow FIGURE 23 DRY COIL DELTA P SUPPLY AIR DRIVE ADJUSTMENT A CAUTION 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 Static pressure will increase by the square of the blower speed Only qualified personnel should make blower speed changes strictly adhering to the fan laws At unit start u
34. Dry Bulb Temp F C of Air on Cond Coil 125 52 TABLE 2 UNIT VOLTAGE LIMITATIONS Power Rating Maximum 380 415 3 50 Utilization range A in accordance with ARI Standard 110 LOCATION Use the following guidelines to select a suitable location for these units Filter access 2 throw away Filter drier solid core Condenser section Slideout motor amp blower assembly for easy access adjustment amp service Belt drive blower motor Compressor 1 access high efficiency compressor Slide out drain pan with steel 3 4 FPT connection Roof curbs in eight and fourteen inch heights Roof curbs for transitioning from York Sunline footprint to the BP Series footprint are also available field installed accessory Unit is designed for outdoor installation only Condenser coils must have an unlimited supply of air Where a choice of location is possible position the unit on either north or east side of building Suitable for mounting on roof curb For ground level installation use a level concrete slab with a minimum thickness of 4 inches 102 mm The length and width should be at least 6 inches 152 mm greater than the unit base rails Do not tie slab to the building foundation Roof structures must be able to support the weight of the unit and its options accessories Unit must be installed on a solid level roof curb or appropriate angle iron frame Maintain
35. E A MINIMUM OF 60 INCHES 1524 mm 181 163 147 214 237 CAUTION All panels must be secured in place when the unit is lifted The condenser coils should be protected from rig ging cable damage with plywood or other suitable material FIGURE6 UNIT 6 POINT LOAD NOTE xxx indicates dimensions in FIGURE5 UNIT 4 POINT LOAD FIGURE7 UNIT CENTER OF GRAVITY 10 Unitary Products Group 66307 0606 CLEARANCES All units require particular clearances for proper operation A WARNING and service Refer to Table 6 for clearances required for con struction servicing and proper unit operation Do not permit overhanging structures or shrubs to obstruct condenser air discharge outlet combustion air inlet or vent outlets 50 3 4 1290 Control Entry 7 8 4 1 4 110 Entry 2 112 __ 65 Convenience Power Outlet Entry 07 8 FIGURE 8 UNIT DIMENSIONS TABLE 6 UNIT CLEARANCES Topt 72 1830 Right 12 305 Front 36 915 Left 36 915 Rear 36 915 Bottom 0 0 In inches and millimeters in mm t Units must be installed outdoors Overhanging structure or shrubs should not obstruct condenser air discharge outlet f remove the slide out drain pan a rear clearance of 60 1525 mm is required If space is unavailab
36. Model 1725 80 1 15 56 3 4 4 4 7 8 1VM50 7 5 1 AK79 A55 1725 80 1 15 56 3 4 4 4 7 8 1VM50 6 5 1 AK69 A53 1725 80 115 56 34 44 7 8 1VM50 7 1 AK74 54 1725 8096 1 15 184T 4 3 5 3 1 1 8 1VP56 6 2 1 BK72 BX56 Unitary Products Group 29 66307 YIM B 0606 AIR BALANCE 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 CHECKING AIR QUANTITY METHOD ONE 1 Remove the dot plugs from the duct panel for location of the dot plugs see Figure 10 2 Insert eight inches of 1 4 inch metal tubing into the air flow on both sides of the indoor coil NOTE The tubes must be inserted and held in a position perpendicular to the air flow so that velocity pres sure will not affect the static pressure readings 3 Use an Inclined Manometer or Magnehelic to determine the pressure drop across a dry evaporator coil Since the moisture on an evaporator coil can vary greatly measur ing the pressure drop across a wet coil under field condi tions could be inaccurate To assure a dry coil the compressors should be de activated while the test is being run NOTE De energize the compressors before taking any test measurements to assure a dry evaporator coil 4 The CFM through the unit can b
37. OTOR SIDE DUCT IMPERIAL 26 37 COOLING SUPERHEAT 10 39 38 UNIT CONTROL BOARD FLASH CODES 40 4 Unitary Products Group 66307 0606 YORK Predator Heat Pump units are single package reverse cycle air conditioners designed for outdoor installa tion 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 These units are completely assembled on rigid permanently attached base rails All piping refrigerant charge and electri cal wiring is factory installed and tested The units require electric power and duct connections The electric heaters have nickel chrome elements and utilize single point power connection SAFETY CONSIDERATIONS Due to system pressure moving parts and electrical compo nents installation and servicing of air conditioning equipment can be hazardous Only qualified trained service personnel should install repair or service this equipment Untrained personnel can perform basic maintenance functions of clean ing coils and filters and replacing filters Observe all precautions in the literature labels and tags accompanying the equipment whenever working on air condi tioning equipment Be sure to follow all other applicable safety precautions and codes including National Electric Code ANSI NFPA No 70 latest edition U S A and Cana dian Elec
38. OWNSHOT IMPERIAL Turns Open a 0 1 2 3 4 5 Watts Watts BHP Watts BHP Watts BHP Watts Watts BHP 0 2 4543 2511 2 69 4362 2250 2 41 4139 1996 2 14 3911 1766 1 89 3719 1594 1 71 3518 1407 1 51 0 4 4311 2381 2 55 4115 2127 228 3862 1871 2 01 3611 1644 1 76 3386 1471 1 58 3153 1293 1 39 0 6 4032 2232 2 39 3804 1982 2 13 3508 1720 1 84 3246 1506 1 61 2971 1332 1 43 4 0 8 3706 2068 2 22 3428 1818 1 95 3078 1548 1 66 1 0 3333 1892 2 03 2989 1644 1 76 12 2914 171 183 TABLE 26 BLOWER PERFORMANCE 10 TON STANDARD MOTOR DOWNSHOT METRIC Turns Open ESP 0 1 2 3 4 5 Pa 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out 3 In Out ms kw 7775 kw 778 kw kw 79 kw kw m s kw kw 75 kw kW 50 214 251 201 206 2 25 1 80 1 95 2 00 1 60 1 85 1 77 141 1 75 1 59 1 27 1 66 141 1 13 100 203 238 1 91 194 213 170 1 82 1 87 150 1 70 1 64 1 31 1 60 147 1 18 149 129 1 03 149 1 90 223 179 1 80 198 1 59 1 66 1 72 138 153 1 51 120 140 133 107 199 175 207 1 65 1 62 1 82 145 145 155 124 5 5 249 157 189 151 141 1 64 132 5
39. SINGLE PACKAGE HEAT PUMP HIGH EFFICIENCY 090 and 120 7 1 2 and 10 TON WWW WWW WW 66307 0606 66307 YIM B 0606 TABLE OF CONTENTS GENERAL aa iieaoe a aana dia ana a aoar i 5 SAFETY 5 5 CHECKING AIR QUANTITY METHOD ONE 5 6 SUPPLY AIR DRIVE ADJUSTMENT RENEWAL PARTS 6 SEQUENCE OF OPERATIONS APPROVALS 6 COOLING SEQUENCE OF OPERATION CONTINUOUS BLOWER NOMENCLATURE 7 INTERMITTENT BLOWER INSTALLATION 8 NO OUTDOOR AIR 5 INSTALLATION SAFETY INFORMATION 8 ECONOMIZER WITH SINGLE ENTHALPY SENSOR PRECEDING INSTALLATION 8 FCONOMIZER WITH DUAL SENSORS 6 8 ES OMS SINGLE OR DUAL WIIHPOWER LOCATION 9 RIGGING AND HANDLING 10 COOLING OPERATIONERRORS
40. TEMPERATURE PSIG Service Port 2 6 10 12 14 16 18 20 22 24 26 28 32 34 61 5 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 64 2 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 67 1 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 70 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 73 43 45 47 49 51 53 55 57 59 61 63 63 67 69 71 73 75 77 76 45 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 79 2 47 49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 82 4 49 51 53 55 57 59 61 63 65 67 71 73 75 77 79 81 83 84 1 50 52 54 56 58 62 64 70 72 74 76 78 82 92 6 55 57 59 71 73 65 67 69 71 73 75 77 79 81 83 85 87 89 From TMP chart TABLE 36 COOLING SUPERHEAT 7 1 2 TON SUCTION SUPERHEAT 4 INDOOR WB TEMP 55 57 59 61 63 65 67 69 71 73 75 65 34 5 34 8 35 1 35 4 35 6 35 9 36 2 37 0 37 7 38 5 39 2 70 32 5 32 9 33 3 33 7 34 1 34 5 34 9 35 8 36 7 37 5 38 4 75 30 4 31 0 31 5 32 0 32 5 33 0 33 6 34 6 35 6 36 6 37 6 80 28 4 29 0 29 7
41. YIM A 0704 035 17277 004 A 0704 Unitary 5005 Norman Products York OK Group Drive 73069
42. and bottom A 2 Adjust by turning B 3 Never loosen nuts C 4 Use belt tension checker to apply a perpendicular force to one belt at the midpoint of the span as shown Deflection distance of 4mm 5 32 is obtained To determine the deflection distance from normal position use a straight edge from sheave to sheave as reference line The recommended deflection force is as follows Tension new belts at the max deflection force rec ommended for the belt section Check the belt ten sion at least two times during the first 24 hours of operation Any retensioning should fall between the min and max deflection force values 5 After adjusting retighten nuts A Unitary Products Group 23 66307 YIM B 0606 TABLE 13 BLOWER PERFORMANCE 7 1 2 TON STANDARD MOTOR SIDE DUCT IMPERIAL Turns Open m 0 1 2 3 4 5 Watts BHP Watts BHP Watts BHP Watts Watts BHP Watts 0 2 3698 1382 1 48 3527 1249 1 34 0 4 3591 1424 1 53 3288 1242 1 33 3093 1120 1 20 0 6 3430 1451 1 56 3183 1276 1 37 2819 1104 1 18 2550 977 1 05 0 8 3312 1490 1 60 2975 1287 1 38
43. and voltage is supplied at M2 lightly the Mate N Lock plug to the Y1 ECON terminal touch the compressor housing If it is hot the compres 13 For units with economizers If 24 volts is present at the sor may be off on inherent protection Cancel any calls Y1 OUT terminal check for 24 volts at the Y1 ECON for cooling and wait for the internal overload to reset terminal If 24 volts is not present check for loose wiring Test again when cool from the Y1 OUT terminal to the Mate N Lock plug a if M2 is not pulled in check for 24 volts at the 2 coil If poor connection between the UCB and economizer 24 volts is present and M2 is not pulled in replace the Mate N Lock plugs loose wiring from the Mate N Lock ctintactof plug to the economizer back to the Mate N Lock plug and from the Mate N Lock plug to the Y1 ECON termi 5 Failing the above if voltage is supplied at M2 M2 is nal If nothing is found the economizer control may have pulled in and the compressor still does not operate faulted and is failing to return the 24 volt call to the Y1 replace the compressor ECON terminal even though the economizer is not pro viding free cooling test disconnect the Mate N Locks 6 If 24 volts is not present at M2 check for 24 volts at the and jumper between the WHITE and YELLOW wires of UCB terminal C2 If 24 volts are present check for the UCB s Mate N Lock plug If compressor 1 ener loose wiring between C2 an
44. 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 1 This equipment is not to be used for temporary heating of buildings or structures under construction PRECEDING INSTALLATION 1 Remove the two screws holding the brackets in the front rear and compressor side fork lift slots 9 IMPORTANT Screws ROE SECRETS FM AND REMOVE PLYVIOOD FROM a UNDERNEATH BASE PAN FIGURE 1 UNIT SHIPPING BRACKET 2 Turn each bracket toward the ground and the protective plywood covering will drop to the ground 3 Remove the condenser coil external protective covering prior to operation 4 Remove the toolless doorknobs and instruction packet prior to installation Condenser Coil External m Protective Covering Barometric Relief Hood in Shipping Loca tion if include FIGURE 2 CONDENSER COIL COVERING CAUTION This product must be installed in strict compliance with the enclosed installation instructions and any applica ble local state and national codes including but not limited to building electrical and mechanical codes Toolless Doorknobs Installation Instruction Packet FIGURE 3 COMPRESSOR SECTION LIMITATIONS These units must be installed in accordance wit
45. at 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 Qv S LN Check indoor blower rotation 36 Unitary Products Group 66307 0606 If blower rotation is in the wrong direction Refer to NOTE Prior to initial operation the crankcase heaters must Phasing Section in general information section be energized at least 8 hours before the system is put into operation e Check blower drive belt tension 2 Setthe room thermostat setting to lower than the room Check the unit supply air CFM temperature 3 First stage compressors will energize after the built in Measure evaporator fan motor s amp draw time delay five minutes 6 7 8 Setthe room thermostat fan switch to off 4 second stage of the thermostat will energize second 9 Turn unit electrical power off stage compressor if needed OPERATING INSTRUCTIONS POST START CHECK LIST 1 Turn unit electrical power 1 Verify proper system pressures for both circuits 2 Measure the temperature drop across the evaporator Coil SUPERHEAT CHARGING METHOD Use this method if the unit is equipped with an orifice type metering device To determine if the system is properly charged connect a gauge set to the high and low service ports in the compressor compartment A temperature probe should be attached
46. cal distributor If none of the above corrected the error test the integrity of the UCB Disconnect the C2 terminal wire and jumper it to the Y2 terminal DO NOT jump the Y2 to C2 termi nals If the compressor engages the UCB has faulted If none of the above correct the error replace the UCB On a call for cooling the supply air blower motor and com pressor 2 are operating but compressor 1 is not the room thermostat fan switch is in the AUTO position 1 Compressor 2 is energized in place of compressor 1 when compressor 1 is unavailable for cooling calls Check the UCB for alarms indicating that compressor 1 is locked out Press and release the ALARMS button if the LED is not flashing an alarm Check for line voltage at the compressor contactor M1 and that the contactor is pulled in Check for loose wiring between the contactor and the compressor If M1 is pulled in and voltage is supplied at M1 lightly touch the compressor housing If it is hot the compres sor may be off on inherent protection Cancel any calls for cooling and wait for the internal overload to reset Test again when cool If M1 is not pulled in check for 24 volts at the M1 coil If 24 volts is present and M1 is not pulled in replace the contactor Failing the above if voltage is supplied at M1 M1 is pulled in and the compressor still does not operate replace the compressor If 24 volts is not present at M1 check for 24 volts at the
47. d the compressor contactor gizes there is a fault in the economizer wiring or the 7 f24 volts is not present at the C2 terminal check for 24 economizer control volts from the room thermostat at the UCB Y2 terminal If 14 The UCB can be programmed to lock out compressor 24 volts is not present from the room thermostat check operation during free cooling and in low ambient condi for the following tions These options are not enabled by default Local a 24 volts at the thermostat Y2 terminal distributors can test the UCB for this programming b Proper wiring between the room thermostat and the For units with factory installed economizers the UCB is UCB i e Y1 to Y1 Y2 to Y2 and programmed to lock out compressor operation when the LAS set point is reached C Loose wiring from the room thermostat to the UCB For units without factory installed or with field installed 8 If 24 volts is present at the UCB Y2 terminal the com economizers the UCB allows compressor operation all pressor may be out due to an open high pressure switch 42 Unitary Products Group 66307 0606 10 11 12 13 low pressure switch 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 LPS ter minals If 24 volts is present at the UCB
48. de the heater compartment and is Set to open at the temperature indicated in the Electric Heat Limit Setting Table 33 It resets automatically The limit switch operates when a high temperature condition caused by inad equate supply air flow occurs thus shutting down the heater and energizing the blower TABLE 33 ELECTRIC HEAT LIMIT SETTING HEATER LIMIT SWITCH UNIT TONS VOLTAGE kW OPENS F 7 5 9 150 7 5 10 18 150 7 5 10 380 415 24 150 7 5 10 34 150 10 54 140 FLASH CODES The UCB will initiate a flash code associated with errors within the system Refer to UNIT CONTROL BOARD FLASH CODES Table 38 RESET Remove the call for heating by lowering the thermostat set ting lower than the conditioned space temperature This resets any flash codes ELECTRIC 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 cycles and may result in the lowering of the temperature within the conditioned space Refer to Table 34 for the required electric heat anticipator setting TABLE 34 HEAT PUMP ANTICIPATOR SETPOINTS SETTING AMPS Wi w2 0 13 0 1 START UP PRESTART CHECK LIST After installation has been completed 1 Check the electrical supply voltage being supplied Be sure th
49. disconnect switch POWER WIRING DETAIL Units are factory wired for the voltage shown on the unit nameplate Refer to Electrical Data Tables 8 and 9 to size power wiring fuses and disconnect switch Power wiring is brought into the unit through the side of the unit or the basepan inside the curb CAUTION The thermostat must provide a G signal when there is call for W1 The unit control 1 Electronic programmable Thermostat 2ETO770010024 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 FIGURE 17 ELECTRONIC THERMOSTAT FIELD WIRING NOTE This unit does not require a heat pump thermostat It is designed to work with a standard two stage cool two stage heat thermostat however the ther mostat must provide a G signal when there is a call for W1 16 Unitary Products Group 66307 0606 T STAT 4 WA pee esee ex ee w2 E Mm CAUTION G eee a The thermostat must provide signal y2 occh when there is a call for W1 The unit control UNIT CONTROL board will energize the indoor blower when U zm BOARD the compressors are energized however if 93 the thermostat calls for W2 during the
50. duct system should be used This will 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 pressure requirements of the job They should NOT be sized to match the dimensions of the duct connections on the unit Refer to Figure 9 for bottom air duct openings Refer to Fig ure 10 for rear air duct openings 28 1 4 28 1 4 720 18 1 16 a Patch Plate For Slide Out Drain Pan 2 75 31 11 16 805 DUCT COVERS Units are shipped with the side duct openings covered and a covering over the bottom of the unit For bottom duct applica tion no duct cover changes are necessary For side duct application remove the side duct covers and install over the bottom duct openings The panels removed from the side duct connections are designed to be reused by securing each panel to its respective downflow opening But keep in mind that the supply panel is installed with the painted surface UP facing the heat exchanger while the return panel is installed with the painted surface DOWN facing the downflow duct opening The supply panel is secured with the bracket already in place from the factory and two screws It s a snug fit for the panel when sliding it between the heat exchanger and unit bottom but there is room The return pane
51. e determined from the pressure drop indicated by the manometer by referring to Figure 23 In order to obtain an accurate measurement be certain that the air filters are clean 5 To adjust Measured CFM to Required CFM see SUP PLY AIR DRIVE ADJUSTMENT 6 After readings have been obtained remove the tubes and replace the dot plugs AWARNING Failure to properly adjust the total system air quan tity can result in extensive blower damage METHOD TWO 1 Drill two 5 16 inch holes one in the return air duct as close to the inlet of the unit as possible and another in the supply air duct as close to the outlet of the unit as possible 2 Using the holes drilled in step one insert eight inches of 1 4 inch metal tubing into the airflow of both return and supply air ducts of the unit NOTE The tubes must be inserted and held in position per pendicular to the airflow so that velocity pressure will not affect the static pressure readings 3 Use an Inclined Manometer or Magnehelic to determine the pressure drop across the unit This is the External Static Pressure ESP In order to obtain an accurate measurement be certain that the air filters are clean 4 Determine the number of turns the variable motor sheave is open 5 Select the correct blower performance table for the unit from Tables 13 28 Tables are presented for horizontal and downflow configurations 6 Determine the unit Measured
52. e when to operate in low ambient mode the UCB has a pair of terminals connected to a temperature activated switch set at 45 F When the low ambient switch is closed 34 Unitary Products Group 66307 0606 and the thermostat is calling for cooling the UCB will operate in the low ambient mode Low ambient mode operates the compressors in this manner 10 minutes on 5 minutes off The indoor blower is operated throughout the cycle The 5 minute off period is necessary to defrost the indoor coil Low ambient mode always begins with compressor opera tion Compressor minimum run time may extend the minutes of compressor operation The defrost cycle will begin immedi ately following the elapse of the minimum run time When operating in low ambient mode the UCB will not lock out the compressors due to a freezestat trip However a freezestat trip will de energize the associated compressor If the call for cooling is still present at the end of the ASCD and the freezestat has closed the unit will resume operation SAFETY CONTROLS The unit control board monitors the following inputs for each cooling system 1 Asuction line freezestat to protect against low evapora tor temperatures due to a low airflow or a low return air temperature opens at 26 5 F and resets at 38 5 F 2 Ahigh pressure switch to protect against excessive dis charge pressures due to a blocked condenser coil or a condenser motor failu
53. erates each cooling system until the minimum run times for the compressors have been com pleted Upon the final compressor de energizing the blower is stopped following the elapse of the fan off delay for cooling To be available a compressor must not be locked out due to a high or low pressure switch or freezestat trip and the anti short cycle delay ASCD must have elapsed ECONOMIZER WITH SINGLE ENTHALPY SENSOR When the room thermostat calls for first stage cooling the low voltage control circuit from R to G and Y1 is com pleted The UCB energizes the blower motor if the fan switch on the room thermostat is set in the AUTO position and drives the economizer dampers from fully closed to their min imum position If the enthalpy of the outdoor air is below the set point of the enthalpy controller previously determined Unitary Products Group 33 66307 YIM B 0606 Y1 energizes the economizer The dampers will modulate to maintain a constant supply air temperature as monitored by the discharge air sensor If the outdoor air enthalpy is above the set point Y1 energizes compressor 1 When the thermostat calls for second stage cooling the low voltage control circuit from R to Y2 is completed The UCB energizes the first available compressor If the enthalpy of the outdoor air is below the set point of the enthalpy controller i e first stage has energized the economizer Y2 will ener gize compr
54. essor 1 If the outdoor air is above the set point Y2 will energize compressor 2 Once the thermostat has been satisfied it will de energize Y1 and Y2 If the compressors have satisfied their minimum run times the compressors and condenser fans are de ener gized Otherwise the unit operates each cooling system until the minimum run times for the compressors have been com pleted Upon the final compressor de energizing the blower is stopped following the elapse of the fan off delay for cooling and the economizer damper goes to the closed position If the unit is in continues fan operation the economizer damper goes to the min position ECONOMIZER WITH DUAL ENTHALPY SENSORS The operation with the dual enthalpy sensors is identical to the single sensor except that a second enthalpy sensor is mounted in the return air This return air sensor allows the economizer to choose between outdoor air and return air whichever has the lowest enthalpy value to provide maxi mum operating efficiency ECONOMIZER SINGLE OR DUAL WITH POWER EXHAUST This system 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 When the power exhaust is operating the second stage of mechanical cooling will not operate As always the R to G connection provides minimum position but does not provide power exhaust operation
55. h the follow ing In U S A 1 National Electrical Code ANSI NFPA No 70 Latest Edition 2 Local building codes 3 Local electric utility requirements In Canada 1 Canadian Electrical Code CSA C22 1 2 Installation Codes CSA B149 1 3 Local plumbing and waste water codes and 4 Other applicable local codes Refer to Tables 2 amp 3 for unit application data If components are to be added to a unit to meet local codes they are to be installed at the dealer s and or customer s expense Size of unit for proposed installation should be based on heat loss heat gain calculation made according to the methods of Air Conditioning Contractors of America ACCA This furnace is not to be used for temporary heating of build ings or structures under construction Unitary Products Group 66307 0606 Simplicity Control Disconnect location board w screw con optional disconnect switch Terminal block for hi voltage connection nector for I stat Wir ing and network connection Second model name plate inside hinged access panel Compressor 2 4 access high efficiency com pressor Base rails w fork lift slots 3 sides and lifting holes Side entry Tool less door power and control latch wiring knockouts FIGURE 4 PREDATOR COMPONENT LOCATION TABLE 1 UNIT TEMPERATURE LIMITATIONS Temperature Max Wet Bulb Temp of Air on Evap Coil 72 22
56. it Renewal Parts List RENEWAL PARTS Contact your local York parts distribution center for autho rized replacement parts APPROVALS Design certified by CSA as follows 1 Foruse as a cooling only unit cooling unit with supple mental electric heat forced air furnace 2 For outdoor installation only 3 Forinstallation on combustible material and may be installed directly on combustible flooring or in the U S on wood flooring or Class A Class B or Class C roof cov ering materials CAUTION 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 mechanical codes A WARNING Incorrect installation may create a condition where the operation of the product could cause personal injury or property damage 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 damage may result if installation procedure is not handled properly Unitary Products Group 66307 0606 NOMENCLATURE 7 5 10 0 Ton York Model Number Nomenclature 090 00 7 A AA 3 0 1 2 4 Product Categor
57. l is secured with four screws Unitary Products Group 13 66307 YIM B 0606 RIGHT INSULATED DECK UNDER CONDENSER SECTION INSULATED DECK UNDER COMPRESSOR SECTION 205 355 FRONT NOTE XXX INDICATES DIMENSIONS IN MILLIMETERS FIGURE 11 PREDATOR ROOF CURB DIMENSIONS 2 50 1 2 1285 RIGHT B 1630 FIGURE 12 SUNLINE TO PREDATOR TRANSITION ROOF CURBS CAUTION 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 14 Unitary Products Group 66307 0606 FIGURE 14 RETURN DOWNFLOW PLENUM WITH PANEL wn FIGURE 15 DISCHARGE PANEL IN PLACE CONDENSATE DRAIN The side condensate drain is reversible and maybe re ori ented to the rear of the cabinet to facilitate condensate pip ing A condensate drain connection is available through the base pan for piping inside the roof curb Trap the connection per Figure 16 The trap and drain lines should be protected from freezing Plumbing must conform to local codes Use a sealing com pound on male pipe threads Install condensate drain line from the 3 4 inch NPT female connection on the unit to an open drain
58. le the drain pan can be removed through the front by separating the corner wall 59 636 4222 1500 615 155 LEFT 27 685 DETAIL A For Baserail FRONT Dimensions See Detail A For Drain Dimensions See Detail B 89 2260 NOTE xxx indicates dimensions given in millimeters Units may be installed on combustible floors DETAIL B NOTE one inch clearance must be provided between jeu any combustible material and the supply ductwork for a distance of 3 feet from the unit 5 3 8 i 135 LH Unitary Products Group 11 66307 YIM B 0606 32 11 16 830 6 13 16 6 13 16 175 19 3 16 485 21 3 16 17 3 16 540 435 14 23 32 NOTE XXX INDICATES DIMENSIONS IN MILLIMETERS 181 ash OPEN FRONT Bottom Power SUN ap Pdl 460 E Wiring 498 FIGURE 9 BOTTOM DUCT OPENINGS FROM ABOVE 12 Unitary Products Group 66307 0606 18 1 4 465 1 5 5 32 130 720 NOTE XXX indicates millimeters FIGURE 10 REAR DUCT DIMENSIONS 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
59. m length TABLE 7 CONTROL WIRE SIZES Wire Size 18 AWG Maximum Length 150 Feet 45 72 meters From the unit to the thermostat and back to the unit POWER AND CONTROL WIRING Field wiring to the unit fuses and disconnects must conform to provisions of National Electrical Code NEC ANSI NFPA No 70 Latest Edition in U S A current Canadian Electri cal Code CSA 22 1 and or local ordinances The unit must be electrically grounded in accordance with NEC and CEC as specified above and or local codes Voltage tolerances which must be maintained at the com pressor terminals during starting and running conditions are indicated on the unit Rating Plate and Table 2 The internal wiring harnesses furnished with this unit are an integral part of the design certified unit Field alteration to Unitary Products Group 15 66307 0606 comply with electrical codes should be required If any the wire supplied with the unit must be replaced replacement wire must be of the type shown on the wiring diagram and the same minimum gauge as the replaced wire A disconnect must be utilized for these units When installing a disconnect refer to Figure 4 for the recommended mount ing location CAUTION Avoid damage to internal components if drilling holes for disconnect mounting NOTE Since not all local codes allow the mounting of a dis connect on the unit please c
60. me of 10 minutes is met The DC also contains a set of test pins Placing a jumper across these pins will result in the following actions Ifthe ASCD timer is active it is now by passed allowing the compressor to run Ifthe DC is a lockout condition the lockout is reset fthe compressor is running the DC is forced into defrost mode The control will remain in defrost mode for as long as the jumper is in place When the jumper is removed the control will terminate the defrost mode in the normal manor as described above NOTE The DC has two flashing codes which are only initi ated if the two pressure switch terminals are open As used in the Predator there is a jumper across the pressure switch terminals Therefore the field should never experience a DC lockout mode unless that jumper is removed or broken ELECTRIC HEAT OPERATION ERRORS TEMPERATURE LIMIT If the UCB senses zero volts from the high temperature limit the indoor blower motor is immediately energized This limit is monitored regardless of unit operation status i e the limit is monitored at all times If the temperature limit opens three times within one hour it will lock on the indoor blower motor and a flash code is initi ated See Table 38 SAFETY CONTROLS The UCB monitors the temperature limit switch of electric heat units The control circuit includes the following safety controls LIMIT SWITCH LS This control is located insi
61. n in the table Pressing and releasing the LAST ERROR button on the UCB can check the alarm history The UCB will cycle through the last five 5 alarms most recent to oldest separating each alarm flash code by approximately 2 seconds In all cases a flashing Green LED will be used to indicate non alarm condition In some cases it may be necessary to zero the ASCD for the compressors in order to perform troubleshooting To reset all ASCDs for one cycle press and release the UCB TEST RESET button once Flash codes that do and do not represent alarms are listed in Table 38 Unitary Products Group 39 66307 0606 TABLE 38 UNIT CONTROL BOARD FLASH CODES GREEN RED RED RED RED FLASH CODE DESCRIPTION LED LED LED LED LED 16 8 4 2 1 On Steady This is a Control Failure 1 Flash Not Applicable 2 Flashes Control waiting ASCD Flashing Off Off On Off 3 Flashes HPS1 Compressor Lockout Off Off Off On On 4 Flashes HPS2 Compressor Lockout Off Off On Off Off 5 Flashes LPS1 Compressor Lockout Off Off On Off On 6 Flashes LPS2 Compressor Lockout Off Off On On Off 7 Flashes 51 Compressor Lockout Off Off On On On 8 Flashes FS2 Compressor Lockout Off On Off Off Off 9 Flashes Ignition Control Locked Out Ignition Control Failure Off On Off Off On 10 Flashes Compressors Locked Out on Low Outdoor Air Temperature Flashing On Off On Off 11 Flashes b
62. nit is misphased Change the phasing of the field line connection at the field supplied disconnect to obtain proper rotation Scroll compressors operate in only one direction If the scroll is drawing low amperage has similar suction and discharge pressures or producing a high noise level the scroll is misphased Units with scroll compressors have a phase monitor as standard equipment This phase monitor will prevent unit operation under misphased condi tions by breaking the 24 volt power CAUTION Scroll compressors require proper rotation to oper ate correctly Units are properly phased at the fac tory Do not change the internal wiring to make the blower condenser fans or compressor rotate cor rectly BLOWER ROTATION Check for proper supply air blower rotation If the blower is rotating backwards the line voltage at the unit point of power connection is misphased See PHASING TABLE 12 SUPPLY AIR LIMITATIONS Minimum CFM Maximum CFM Unit Size 3 3 m sec 090 2250 1 3750 1 7 120 3000 1 4 5000 2 3 BELT TENSION The tension on the belt should be adjusted as shown in Figure 22 22 Unitary Products Group 66307 0606 NEVER LOOSEN SPAN LENGTH DEFL FORCE FIGURE 22 BELT ADJUSTMENT CAUTION Procedure for adjusting belt tension 1 Loosen six nuts top
63. o the instructions included with the outdoor air hood to com plete the assembly Field installed Motorized Outdoor Damper accessories include complete instructions for instal lation ECONOMIZER The Economizer can be a factory installed option or a field installed accessory If factory installed refer to the instruc tions included with the outdoor air hood to complete the assembly Field installed Economizer accessories include complete instructions for installation There are two Economizer options 1 Down Flow application with barometric relief hood stan dard 2 Horizontal Flow application that requires the purchase of a barometric relief hood POWER EXHAUST The Power Exhaust can be a factory installed option or a field installed accessory If factory installed refer to the instruc tions included with the outdoor air hood to complete the assembly Field installed Power Exhaust accessories include complete instructions for installation The Power Exhaust factory installed option is for Down Flow application only There are two field installed Power Exhaust accessories 1 Down Flow application 2 Horizontal Flow application that requires the purchase of a barometric relief hood RAIN HOOD All of the hood components including the filters the gasket ing and the hardware for assembling are packaged and located between the condenser coil section and the main unit cabinet if the unit has factory installed option
64. oling If the supply air blower motor does not energize when the fan switch is set to ON check that line voltage is being supplied to the contacts of the M3 contactor and that the contactor is pulled in Check for loose wiring between the contactor and the supply air blower motor If M3 is pulled in and voltage is supplied to MG lightly touch the supply air blower motor housing If it is hot the motor may be off on internal protection Cancel any thermostat calls and set the fan switch to AUTO Wait for the internal overload to reset Test again when cool If M3 is not pulled in check for 24 volts at the M3 coil If 24 volts are present at M3 but is not pulled in replace the contactor Failing the above if there is line voltage supplied at 3 M3 is pulled in and the supply air blower motor still does not operate replace the motor If 24 volts is not present at M3 check that 24 volts is present at the UCB supply air blower motor terminal FAN If 24 volts is present at the FAN check for loose wiring between the UCB and M3 If 24 volts is not present at the FAN terminal check for 24 volts from the room thermostat If 24 volts are not present from the room thermostat check for the follow ing a Proper operation of the room thermostat contact between R and G with the fan switch in the ON posi tion and in the AUTO position during operation calls b Proper wiring between the room thermostat and the UCB and
65. onfirm compliance with local code before mounting a disconnect on the unit Electrical line must be sized properly to carry the load USE COPPER CONDUCTORS ONLY Each unit must be wired with a separate branch circuit fed directly from the meter panel and properly fused THERMOSTAT TERMINALS UNIT TERMINALS RC STRIP TB1 1 Y1 2 Y2 wi TO REMOTE SENSOR 2ET04701324 IF USED E Goes E 24 Volt board will energize the indoor blower when DA esto ecu Transformer the compressors are energized however if the thermostat calls for W2 during the anti i short cycle delay the electric heat when i installed will be energized immediately AT upon the call for W2 A2 Refer to Figures 17 18 and 19 for typical field wiring and to the appropriate unit wiring diagram mounted inside control doors for control circuit and power wiring information CAUTION When connecting electrical power and control wiring to the unit water proof connectors must be used so that water or moisture cannot be drawn into the unit during normal operation The above water proofing conditions will also apply when installing a field sup plied
66. oor blower has a delay of 10 seconds between operations NO OUTDOOR AIR OPTIONS When the thermostat calls for the first stage of cooling the low voltage control circuit from R to Y1 and G is com pleted The UCB energizes the economizer if installed and free cooling is available or the first available compressor and the condenser fans For first stage cooling compressor 1 is energized If compressor 1 is unavailable compressor 2 is energized After completing the specified fan on delay for cooling the UCB will energize the blower motor When the thermostat calls for the second stage of cooling the low voltage control circuit from R to Y2 is completed The control board energizes the first available compressor If free cooling is being used for the first stage of cooling com pressor 1 is energized If compressor 1 is active for first stage cooling or the first compressor is locked out compres sor 2 is energized In free cooling mode if the call for the second stage of cooling continues for 20 minutes compres sor 2 is energized provided it has not been locked out If there is an initial call for both stages of cooling the UCB will delay energizing compressor 2 by 30 seconds in order to avoid a power rush Once the thermostat has been satisfied it will de energize Y1 and Y2 If the compressors have satisfied their minimum run times the compressors and condenser fans are de ener gized Otherwise the unit op
67. osed and 10 Vdc corresponding to full open When there is no call for free cooling the damper position is limited by the IAQ Max damper position setting When the signal exceeds it s set point Demand Control Ven tilation Set Point setting and there is a call for free cooling the actuator modulates from the minimum position to the full open position based on the highest call from either the mixed air sensor input or the AQ voltage input Optional Space Sensor Kit Part 2AQ04700324 Optional Sensor Kit Part 2AQ04700424 Replace the top rear access panel on the unit 85 90 95 100 105 110 140 5 43 5 RELATIVE HUMIDITY 75 80 85 90 95 100 105 1241 126 5 29 5 32 351 38 40 5 DRY BULB TEMPERATURE APPROXIMATE FAHRENHEIT CELSIUS FIGURE 20 ENTHALPY SET POINT CHART Unitary Products Group 21 66307 YIM B 0606 Exhaust Air Adjustment Screw Exhaust Air LED Damper Min Position Screw Indoor Air Quality Max Adjustment Screw Indoor Air Quality LED Indoor Air Quality Min Adjustment Screw Free Cooling LED Economizer Enthalpy Set Point Adjustment Screw FIGURE 21 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 u
68. ou dir s locked out because the Economizer is using free Flashing On Cooling 12 Flashes Unit Locked Out due to Fan Overload Switch Failure Off On On Off Off 13 Flashes Compressor Held Off due to Low Voltage Flashing On Off On 14 Flashes EEPROM Storage Failure Off On On On Off OFF No Power or Control Failure Off Off Off Off Off Non alarm condition Check Alarm History Reset All ASCDs for One Cycle Non Alarm Condition Green LED Flashing Current Alarm Flashed Red LED COMM LAST TEST OPTION w SETUP ERROR RESET 9 SETUP T E cz m a e 5 6 P 1 FIGURE 24 UNIT CONTROL BOARD C15 LOW AMB LO 0 1022 COOUNC gt Fi pov 4 t AP E t E 40 Unitary Products Group 66307 0606 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 1 10 Turn the thermostat fan switch to the ON position If the supply air blower motor does not energize go to Step 3 If the blower motor runs with the fan switch in the ON position but will not run after the first compressor has energized when the fan switch is in the AUTO position check the room thermostat for contact between R and G in the AUTO position during calls for co
69. oviding free cooling If the second stage of cooling is requested fol 11 If 24 volts is present at the UCB Y1 terminal and the lowing a short delay compressor 1 will be energized compressor is not out due to a protective switch trip unless it is locked out Typically compressor 2 is ener repeat trip lock out or ASCD the economizer terminals gized only during free cooling if the call for the second of the UCB may be improperly wired Check for 24 volts stage of cooling persists for 20 minutes at the Y1 OUT terminal of the UCB E volts 2 Compressor 2 will energize simultaneously with present trace wiring compressor 1 if call for both stages of cooling is ing If 24 volts is not present at the Y1 OUT terminal received The UCB delays compressor 2 by 30 sec the UCB must be replaced onds to prevent a power surge If after the delay com 12 For units without economizers f 24 volts is present at the pressor 2 does not energize on a second stage call for Y1 OUT terminal check for 24 volts at the Y1 cooling check for line voltage at the compressor contac terminal If 24 volts is not present check for loose wiring tor M2 and that the contactor is pulled in Check for from the Y1 OUT terminal to the Mate N Lock plug the loose wiring between the contactor and the compressor jumper in the Mate N Lock plug and in the wing from 3 If M2 is pulled
70. p the measured CFM may be higher or lower than the required CFM To achieve the required CFM the speed of the drive may have adjusted by changing the datum diameter DD of the variable pitch motor sheave as described below Required Measured Cru Existing DD New DD Use the following tables and the DD calculated per the above equation to adjust the motor variable pitch sheave 4500 5000 5500 EXAMPLE A 12 5 ton unit was selected to deliver 4 000 CFM with a 3 HP motor but the unit is delivering 3 800 CFM The variable pitch motor sheave is set at 2 turns open Use the equation to determine the required DD for the new motor sheave 2 000 40 In 421 In Use Table 32 to locate the DD nearest to 4 21 in Close the sheave to 1 turn open New BHP Speed increase BHP at 3 800 CFM Speed increase Original BHP New BHP New motor Amps Speed increase Amps at 3 800 CFM Speed increase Original Amps New Amps Unitary Products Group 31 66307 YIM B 0606 TABLE 30 ADDITIONAL STATIC RESISTANCE IMPERIAL Electric Heat KWt CFM Cooling Only Economizert t 9 18 24 36 54 2300 0 08 0 02 0 07 0 08 0 09 0 10 0 13 2500 0 09 0 02 0 08 0 09 0 10 0 11 0 14 2700 0 11 0 03 0 09 0 10 0 12 0 13 0 16 2900 0 12 0 03 0 10 0 11 0 13 0 14 0 18 3100 0 14 0 03 0 12 0 13 0 15 0 16 0 20 3300 0 16 0 03 0 13
71. re opens at 405 10 psig or 440 10 psig depending on model 3 Alow pressure switch to protect against loss of refriger ant charge opens at 7 3 psig and resets at 22 5 psig The above pressure switches are hard soldered to the unit The refrigeration systems are independently monitored and controlled On any fault only the associated system will be 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 COMPRESSOR PROTECTION In addition to the external pressure switches the compres sors also have inherent internal protection If there is an abnormal temperature rise in a compressor the protector will open to shut down the compressor The UCB incorporates features to minimize compressor wear and damage An Anti Short Cycle Delay ASCD is utilized to prevent operation of a compressor too soon after its previous run Additionally a minimum run time is imposed any time a compressor is ener gized The ASCD is initiated on unit start up and on any compressor reset or lock out FLASH CODES The UCB will initiate a flash code associated with errors within the system Refer to UNIT CONTROL BOARD FLASH CODES Table 38 RESET Remove the call for cooling by raising thermostat
72. rmines whether the requested operation is available and if so which components to energize For heating the thermostat makes a circuit between R and W1 for the first stage heating The UCB energizes the com pressors 1 and 2 and their condenser fans The W1 call also energizes a separate relay RY1 de energizing the reversing valve allowing the unit to run in the heating mode A time temperature control operates the defrost cycle The thermostat makes a circuit between and W2 for the second stage of heating The UCB passes the W2 signal on to the electric heaters if available In both cases when the W1 call is sensed the indoor blower is energized If at any time a call for both heating and cooling are present the heating operation will be performed If operating the cool ing system is halted as with a completion of a call for cooling Heating always takes priority COOLING SEQUENCE OF OPERATION CONTINUOUS BLOWER By setting the room thermostat fan switch to ON the supply air blower will operate continuously INTERMITTENT BLOWER With the room thermostat fan switch set to AUTO and the system switch set to either the AUTO or HEAT settings the blower is energized whenever a cooling or heating opera tion is requested The blower is energized after any specified delay associated with the operation When energized the indoor blower has a minimum run time of 30 seconds Additionally the ind
73. s 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 CAUTION Extreme care must be exercised in turning all set point maximum and minimum damper positioning adjustment screws to prevent twisting them off MINIMUM POSITION ADJUSTMENT Check that the damper blades move smoothly without binding carefully turn the Minimum Position Adjust screw found on the damper control module fully clock wise and then set the thermostat indoor fan switch to the ON position and then OFF or energize and de energize terminals to With the thermostat set to the indoor fan ON position terminals R to G energized turn the Minimum Posi tion Adjusting screw located on the damper control module counterclockwise until the desired minimum damper position has been attained ENTHALPY SET POINT ADJUSTMENT The enthalpy set point may now be set by selecting the desired set point shown in the Enthalpy Set Point Adjustment Figure 20 Adjust as follows Fora single enthalpy operation carefully turn the set point adjusting screw found on the damper control mod ule to the A B C or D setting corresponding to the lettered curve of
74. setting higher than the conditioned space temperature This resets any pressure or freezestat flash codes HEATING SEQUENCE OF OPERATION When the thermostat calls for the first stage of heating the low voltage control circuit is completed between R and W1 This 24vac signal is passed through the UCB to the RY1 Relay Contacts RY1 1 open assuring the reversing valve cannot be energized except during defrost Contacts RY1 2 close completing the circuit to Y on the defrost control DC After its five minute ASCD timer is satisfied the DC closes it s internal compressor relay contacts sending a 24vac signal to the MV terminal on the UCB If its ASCD timer is satisfied the UCB will energize compressor 1 relay After a two second delay it then energizes compressor 2 relay if applicable Therefore on a call for heat from W1 both com pressors are always energized unless one or the other is locked out by the UCB Also on the call for heat the DC ener gizes the M4 contactor which brings on both condenser fans A second stage call from the thermostat completes the circuit between R and W2 This 24vac signal is passed through the UCB to the defrost control board If the unit is equipped with an optional electric heater it would be energized through a set of normally closed contacts on the defrost board Take note that the MV terminal on the UCB is constantly monitored while there is a demand for heat If the UCB does not see 24vac
75. the Enthalpy Set Point Adjustment Figure 20 20 Unitary Products Group 66307 0606 Foradual enthalpy operation carefully turn the set point adjusting screw fully clockwise past the D setting POWER EXHAUST DAMPER SET POINT 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 each building pressurization requirement will be different The point at which the power exhaust comes on is determined by the econo mizer damper position Percent Open The Exhaust Air Adjustment Screw should be set at the Percent Open of the economizer damper at which the power exhaust is needed It can be set from 0 to 10096 damper open INDOOR AIR QUALITY AQ Indoor Air Quality indoor sensor input Terminal AQ accepts a 2 to 10 Vdc signal with respect to the AQ1 terminal CONTROL POINT APPROX DEG AT 50 RH 73 123 70 21 7 19 63 17 4 115 1451 7 5 55 0 6 70 D3 15 5 18 5 21 When the signal is below it s set point the actuator is allowed to modulate normally in accordance with the enthalpy and mixed air sensor inputs When the AQ signal exceeds it s set point setting and there is no call for free cooling the actuator is proportionately modulated from the 2 to 10 signal with 2 Vdc corresponding to full cl
76. tric Code CSA C22 1 in Canada Wear safety glasses and work gloves Use quenching cloth and have a fire extinguisher available during brazing opera tions INSPECTION As soon as a unit is received it should be inspected for possi ble 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 A WARNING This furnace is not to be used for temporary heating of buildings or structures under construction Before performing service or maintenance opera tions on unit turn off main power switch to unit Elec trical shock could cause personal injury Improper installation adjustment alteration service or main tenance can cause injury or property damage Refer to this manual For assistance or additional informa tion consult a qualified installer service agency or the gas supplier Unitary Products Group 66307 0606 REFERENCE Additional information is available in the following reference forms Technical Guide 259336 General Installation 66307 Pre start amp Post start Check List Economizer Accessory Downflow Factory Installed Downflow Field Installed Horizontal Field Installed Motorized Outdoor Air Damper Manual Outdoor Air Damper 0 100946 Manual Outdoor Air Damper 0 35 Electric Heater Accessory Un
77. tric heaters are available as field installed accessories Refer to electric heat instructions for installation These heat ers mount in the heat compartment with the heating elements extending into the supply air chamber electric heaters are fused and intended for use with single point power supply ELECTRIC HEAT OPTION 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 Fuses are supplied where required by the factory Some kW sizes require fuses and other do not Refer to Table 11 for minimum CFM limitations and to Tables 8 and 9 for electrical data Unitary Products Group 19 66307 YIM B 0606 TABLE 11 ELECTRIC HEAT MINIMUM SUPPLY AIR IMPERIAL HEATER UNIT MODEL SIZE NOMINAL TONS kW VOLTAGE lis MINIMUM SUPPLY AIR CFM 9 2250 N A 2248 2250 3000 24 380 415 2250 3000 _ 86 2250 3000 2254 N A 3000 METRIC HEATER UNIT MODEL SIZE NOMINAL TONS 7 5 10 VOLTAGE MINIMUM SUPPLY AIR 35 9 1 06 N A 18 1 06 1 42 7 24 380 415 1 06 1 42 _ 86 1 06 1 42 54 N A 1 42 MOTORIZED OUTDOOR DAMPER The Motorized Outdoor Damper can be a factory installed option or a field installed accessory If factory installed refer t
78. y Product Style B HP Single Pkg R 22 Product Identifier P 9 3 10 6 EER HP Configuration Options not required for all units These four digits will not be assigned until a quote is requested or an order placed Nominal Cooling Capacity 09 5 Ton 12 0 0 Heat and Nominal Heat Capacity C00 Cooling Only No heat installed Electric Heat Options Product Generation 3 Third Generation 4 Fourth Generation SS Drain Pan Honeywell Controller DFS APS Simplicity IntelliComfort Controller Simplicity IntelliComfort Controller w ModLinc 2 Pleated filters BAS Ready Unit with Belimo Economizer Shipping Bag Any Combination of Additional Options that Don t Have an Option Code Pre assigned E09 9 KW E18 18 KW E24 24 KW E36 36 KW E54 54 KW Additional Options AA None RC Coil Guard Shipping Bag amp American Flag Airflow AB Phase Monitor TA Technicoat Condenser Coil AC Coil Guard TJ Technicoat Evaporator Coil AD Dirty Filter Switch TS Technicoat Evaporator amp Condenser Coils AE Phase Monitor amp Coil Guard AF Phase Monitor amp Dirty Filter Switch AG Coil Guard amp Dirty Filter Switch AH Phase Monitor Coil Guard amp Dirty Filter Switch A Std Motor B Std Motor Econo Barometric Relief Downflow Only C Std Motor Econo Power Exhaust Downflow Only D Std Motor Motorized Damper Downflow Only E Std Motor Horizontal Economizer No
79. y Products Group 41 66307 0606 locked out the compressor for repeat trips The should be flashing an alarm code If not press and release the ALARMS button on the UCB The UCB will flash the last five alarms on the LED If the compressor is locked out cancel any call for cooling This will reset any compressor lock outs NOTE While the above step will reset any lockouts com 10 pressor 1 may be held off for the ASCD See the next step If 24 volts is present at the UCB Y1 terminal and none of the switches are open and the compressor is not locked out the UCB may have the compressor in an ASCD Check the LED for an indication of an ASCD cycle The ASCD should time out within 5 minutes Press and release the TEST button to reset all ASCDs 16 the time This programming can be checked or changed by the local distributor If none of the above corrected the error test the integrity of the UCB Disconnect the C1 terminal wire and jumper it to the Y1 terminal DO NOT jump the Y1 to C1 termi nals If the compressor engages the UCB has faulted If none of the above correct the error replace the UCB On calls for the second stage of cooling the supply air blower motor and compressor 1 are operating but compressor 2 is not the room thermostat fan switch is in the AUTO posi tion 1 If installed check the position of the economizer blades If the blades are open the economizer is pr
80. y be off on inherent protection Cancel any calls for cooling and wait for the internal overload to reset Test again when cool If M1 is not pulled in check for 24 volts at the M1 coil If 24 volts are present and M1 is not pulled in replace the contactor Failing the above if voltage is supplied at M1 M1 is pulled in and the compressor still does not operate replace the compressor If 24 volts is not present at M1 check for 24 volts at the UCB terminal C1 If 24 volts is present check for loose wiring between C1 and the compressor contactor If 24 volts is not present at the C1 terminal check for 24 volts from the room thermostat at the UCB Y1 terminal If 24 volts is not present from the room thermostat check for the following a 24 volts at the thermostat Y1 terminal b Proper wiring between the room thermostat and the UCB i e Y1 to Y1 Y2 to Y2 and Loose wiring from the room thermostat to the UCB If 24 volts is present at the UCB Y1 terminal the com pressor may be out due to an open high pressure switch low pressure switch or freezestat Check for 24 volts at the HPS1 LPS1 and FS1 terminals of the UCB If a switch has opened there should be a voltage potential between the UCB terminals e g if LPS1 has opened there will be a 24 volt potential between the LPS1 termi nals If 24 volts is present at the UCB Y1 terminal and none of the protection switches have opened the UCB may have Unitar

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