Johnson Controls J 18 DJ Technical Manual Download Page 2

Page: 2 / 40

349687-JTG-A-1007

Johnson Controls Unitary Products

TABLE OF CONTENTS

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . 3

FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

FACTORY-INSTALLED OPTIONS . . . . . . . . . . . . . . 5

FIELD-INSTALLED ACCESSORIES. . . . . . . . . . . . . 7

GUIDE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . 37

LIST OF FIGURES

Fig. #

Pg. #

UNIT CUTAWAY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ALTITUDE/TEMPERATURE CONVERSION

FACTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

TYPICAL J**DJ FIELD WIRING DIAGRAM . . . . . . . . 29

FRONT VIEW DIMENSIONS . . . . . . . . . . . . . . . . . . . 30

REAR VIEW DIMENSIONS . . . . . . . . . . . . . . . . . . . . 31

UNIT DIMENSIONS J15, 18, 20 & 25 DJ

(RAINHOOD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

UNIT CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . 33

TYPICAL UNIT APPLICATIONS . . . . . . . . . . . . . . . . 33

FOUR AND SIX POINT LOADS . . . . . . . . . . . . . . . . . 34

UNIT ROOF CURB DIMENSIONS . . . . . . . . . . . . . . . 35

ROOF CURB DUCT OPENINGS DIMENSION . . . . . 35

CUT AWAY OF ROOF CURB . . . . . . . . . . . . . . . . . . 35

TYPICAL UNIT WIRING DIAGRAM . . . . . . . . . . . . . . 36

LIST OF TABLES

Tbl. #

Pg. #

SOUND POWER RATING. . . . . . . . . . . . . . . . . . . . . . . 9

CAPACITY RATINGS - (ARI 360) . . . . . . . . . . . . . . . . . 9

GAS HEAT RATIINGS. . . . . . . . . . . . . . . . . . . . . . . . . . 9

COOLING CAPACITIES FOR J15DJ . . . . . . . . . . . . . 10

COOLING CAPACITIES FOR J18DJ . . . . . . . . . . . . . 11

COOLING CAPACITIES FOR J20DJ . . . . . . . . . . . . . 12

COOLING CAPACITIES FOR J25DJ . . . . . . . . . . . . . 13

Tbl. #

Pg. #

ALTITUDE CORRECTION FACTORS . . . . . . . . . . . . 14

SUPPLY AIR BLOWER PERFORMANCE (15 TON) -
COOLING ONLY 180 MBH - BOTTOM DUCT
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

10 SUPPLY AIR BLOWER PERFORMANCE (17.5 TON) -

COOLING ONLY 210 MBH - BOTTOM DUCT
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

11 SUPPLY AIR BLOWER PERFORMANCE (20 TON) -

COOLING ONLY 240 MBH - BOTTOM DUCT
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

12 SUPPLY AIR BLOWER PERFORMANCE (15 TON) -

GAS HEAT 180 MBH - BOTTOM DUCT
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

13 SUPPLY AIR BLOWER PERFORMANCE (17.5 TON) -

GAS HEAT 210 MBH - BOTTOM DUCT
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

14 SUPPLY AIR BLOWER PERFORMANCE (20 TON) -

GAS HEAT 240 MBH - BOTTOM DUCT
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

15 SUPPLY AIR BLOWER PERFORMANCE (25 TON) -

GAS HEAT 300 MBH - BOTTOM DUCT
CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

16 BLOWER MOTOR AND DRIVE DATA . . . . . . . . . . . . 23

17 STATIC RESISTANCES . . . . . . . . . . . . . . . . . . . . . . . 23

18 POWER EXHAUST PERFORMANCE . . . . . . . . . . . . 23

19 J**DJ ELECTRICAL DATA WITHOUT POWERED

CONVENIENCE OUTLET . . . . . . . . . . . . . . . . . . . . . . 24

20 J**DJ ELECTRICAL DATA WITH POWERED

CONVENIENCE OUTLET . . . . . . . . . . . . . . . . . . . . . . 26

21 J**DJ VOLTAGE LIMITATIONS . . . . . . . . . . . . . . . . . 28

22 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

23 SUPPLY FAN VFD WEIGHTS, IN LBS. . . . . . . . . . . . 29

24 ELECTRIC HEAT CORRECTION FACTORS. . . . . . . 29

25 UTILITIES ENTRY DATA . . . . . . . . . . . . . . . . . . . . . . 30

26 MINIMUM CLEARANCES . . . . . . . . . . . . . . . . . . . . . . 32

27 FOUR AND SIX POINT LOADS . . . . . . . . . . . . . . . . . 34

Summary of Contents for J 18 DJ

Page 1: ...lter driers high and low pressure loss of charge switches and freezestats Scroll compressors Two stage heating provided by dual independent heat exchangers with aluminized steel tubes redundant gas valves spark ignition with induced draft logic Permanently lubricated motors Bottom or side air discharge configuration capability field convertible Belt Drive Blower Motor with high static drive option...

Page 2: ...J25DJ 13 Tbl Pg 8 ALTITUDE CORRECTION FACTORS 14 9 SUPPLY AIR BLOWER PERFORMANCE 15 TON COOLING ONLY 180 MBH BOTTOM DUCT CONNECTIONS 16 10 SUPPLY AIR BLOWER PERFORMANCE 17 5 TON COOLING ONLY 210 MBH BOTTOM DUCT CONNECTIONS 17 11 SUPPLY AIR BLOWER PERFORMANCE 20 TON COOLING ONLY 240 MBH BOTTOM DUCT CONNECTIONS 18 12 SUPPLY AIR BLOWER PERFORMANCE 15 TON GAS HEAT 180 MBH BOTTOM DUCT CONNECTIONS 19 13...

Page 3: ...l Guard Hinged Filter Door Tool Free Access Panels BD Dirty Filter Switch Hinged Filter Door Tool Free Access Panels BE Phase Monitor Coil Guard Hinged Filter Door Tool Free Access Panels BF Phase Monitor Dirty Filter Switch Hinged Filter Door Tool Free Access Panels BG Coil Guard Dirty Filter Switch Hinged Filter Door Tool Free Access Panels BH Phase Monitor Coil Guard Dirty Filter Switch Hinged ...

Page 4: ... adjustable compressor discharge bypass valve is available for low cooling load applications Advanced Controls Unit control boards have stan dardized a number of features previously available only as options or by utilizing additional controls Low Ambient An integrated low ambient control allows all units to operate in the cooling mode down to 0ºF outdoor ambient without additional assis tance Opt...

Page 5: ...cludes a slide in plug in damper assembly with fully modulating spring return motor actuator capa ble of introducing up to 100 outdoor air with nominal 1 leakage type dampers The enthalpy system contains one sensor that monitors the outdoor air and determines when the air is cool enough and dry enough to provide free cooling The rainhood is painted to match the basic unit and must be field assembl...

Page 6: ...motor at full speed or to power the drive and not the motor for diagnostic purposes Due to space limitations VAV is not available with any of the factory installed BAS options described below but is available with BAS ready models Terminal blocks are provided in the control box for field wiring of the cus tomer installed BAS A VFD ready option provides the provisions for a cus tomer installed driv...

Page 7: ...ucing up to 100 outdoor air with nominal 1 leakage type dampers The enthalpy system contains one sensor that monitors the outdoor air and determines when the air is cool enough and dry enough to provide free cooling The rainhood is painted to match the basic unit and must be field assembled before installing MOTORIZED OUTDOOR AIR INTAKE DAMPER Includes a slide in plug in damper assembly with a 2 p...

Page 8: ...ngle enthalpy economizer to dual enthalpy BURGLAR BARS Mount in the supply and return openings to prevent entry into the duct work FLUE EXHAUST EXTENSION KIT In locations with wind or weather conditions which may interfere with proper exhausting of furnace combustion products this kit can be installed to prevent the flue exhaust from entering nearby fresh air intakes WOOD SKID Allows unit to be ha...

Page 9: ...H EER2 2 EER Energy Efficiency Ratio at full load the cooling capacity in Btu s per hour Btuh divided by the power input in watts expressed in Btuh per watt Btuh watt IPLV3 3 IPLV Integrated Part Load Value COOLING ONLY J15DJC E00 178 12 0 12 5 J18DJC E00 208 11 7 12 7 J20DJC E00 230 11 3 12 0 J25DJC E00 292 10 5 11 2 COOLING WITH GAS HEAT J15DJN S 178 12 0 12 5 J18DJN S 208 11 7 12 7 J20DJN S 230...

Page 10: ...118 3 105 4 92 6 79 8 5250 72 189 7 14 51 123 4 108 2 93 1 77 9 62 7 178 3 15 95 118 9 103 7 88 6 73 4 58 2 67 172 3 14 24 154 6 139 5 124 3 109 1 94 0 78 8 63 6 161 8 15 70 150 1 134 9 119 8 104 6 89 4 74 3 59 1 62 156 9 14 05 156 9 155 0 148 1 132 9 117 7 102 6 87 4 147 8 15 52 147 8 146 3 139 9 124 8 109 6 94 4 79 3 57 159 4 14 08 159 4 157 8 151 4 136 2 121 1 105 9 90 8 151 2 15 55 151 2 149 5...

Page 11: ...8 6 111 5 94 4 77 3 6500 72 218 3 17 77 143 8 125 0 106 3 87 5 68 7 204 8 19 63 137 9 119 1 100 3 81 6 62 8 67 202 6 17 33 183 9 165 1 146 4 127 6 108 8 90 1 71 3 189 9 19 18 178 3 159 5 140 8 122 0 103 3 84 5 65 8 62 194 1 17 12 194 1 186 0 168 5 149 8 131 0 112 2 93 5 182 8 19 06 182 8 174 8 157 4 138 6 119 9 101 1 82 4 57 181 1 16 92 181 1 180 1 170 4 151 7 132 9 114 1 95 4 168 8 18 69 168 8 16...

Page 12: ...8 112 7 7000 72 250 6 20 15 162 5 142 2 122 0 101 8 81 6 236 4 21 79 157 8 137 5 117 3 97 1 76 9 67 231 3 19 69 206 2 185 9 165 7 145 5 125 3 105 1 84 9 218 5 21 50 199 2 179 0 158 8 138 6 118 4 98 1 77 9 62 208 1 19 43 208 1 204 2 193 1 172 9 152 7 132 5 112 3 194 8 21 16 194 8 194 1 185 6 165 4 145 1 124 9 104 7 57 217 3 19 70 217 3 214 3 204 9 184 7 164 5 144 3 124 1 207 0 21 35 207 0 205 1 195...

Page 13: ... 1 136 7 8750 72 306 8 27 83 201 3 176 1 150 8 125 5 100 2 286 9 30 20 195 1 169 8 144 6 119 3 94 0 67 293 9 27 37 259 0 233 7 208 5 183 2 157 9 132 7 107 4 280 1 29 98 253 1 227 9 202 6 177 3 152 0 126 8 101 5 62 288 3 26 67 286 9 276 4 253 4 228 1 202 8 177 6 152 3 273 3 29 07 273 3 262 9 240 0 214 8 189 5 164 2 138 9 57 276 1 26 53 276 1 270 5 254 1 228 8 203 5 178 3 153 0 257 9 28 96 257 9 254...

Page 14: ... the static pressure and BHP Since no temperature data is given we will assume an air temperature of 70 F Table 8 shows the correction factor to be 0 832 Corrected static pressure 1 5 x 0 832 1 248 IWC Corrected BHP 4 0 x 0 832 3 328 Example 2 A system located at 5 000 feet of elevation is to deliver 6 000 CFM at a static pressure of 1 5 Use the unit blower tables to select the blower speed and th...

Page 15: ...349687 JTG A 1007 Johnson Controls Unitary Products 15 FIGURE 2 ALTITUDE TEMPERATURE CONVERSION FACTOR ...

Page 16: ... 0 0 9 5 2 4 7 0 7 5 7 5 1 208 VOLT AND HIGH STATIC DRIVE 965 6 0 1 2 2 9 2 6 1 0 3 6 3 2 0 8 4 0 3 6 0 5 4 7 4 2 0 4 5 0 4 4 980 5 5 1 3 3 0 2 7 1 1 3 7 3 3 0 9 4 1 3 7 0 6 4 8 4 3 0 5 5 1 4 6 1025 4 5 1 5 3 2 2 9 1 3 3 9 3 5 1 1 4 5 4 0 0 8 5 1 4 6 0 7 5 6 5 0 1065 3 5 1 6 3 4 3 0 1 4 4 0 3 6 1 2 4 7 4 2 1 0 5 5 4 9 1095 3 0 1 7 3 5 3 1 1 5 4 2 3 8 1 3 4 9 4 4 1 2 5 7 5 1 1130 2 0 1 9 3 7 3 3 1 ...

Page 17: ...0 4 5 9 5 0 980 5 0 1 6 5 3 4 5 1 4 5 8 4 9 1 2 6 3 5 3 0 7 6 9 5 8 1010 4 0 1 8 5 8 4 9 1 7 6 3 5 3 1 5 6 9 5 8 1 0 7 5 6 3 1020 3 5 1 9 6 1 5 1 1 8 6 5 5 5 1 6 7 1 6 0 1 1 7 8 6 6 1035 3 0 2 0 6 2 5 2 1 9 6 8 5 7 1 7 7 4 6 2 1 2 8 1 6 8 1050 2 5 2 1 6 4 5 4 2 0 7 0 5 9 1 8 7 6 6 4 1 3 8 3 7 0 1075 2 0 2 3 6 6 5 5 2 1 7 2 6 0 1 9 7 8 6 6 1 5 8 6 7 2 1100 1 0 2 4 6 7 5 6 2 2 7 3 6 1 2 1 7 9 6 7 23...

Page 18: ... 9 1 2 6 3 5 3 0 7 6 9 5 8 0 2 7 3 6 1 1010 4 0 1 8 5 8 4 9 1 7 6 3 5 3 1 5 6 9 5 8 1 0 7 5 6 3 0 5 7 9 6 7 1020 3 5 1 9 6 1 5 1 1 8 6 5 5 5 1 6 7 1 6 0 1 1 7 8 6 6 0 6 8 3 7 0 1035 3 0 2 0 6 2 5 2 1 9 6 8 5 7 1 7 7 4 6 2 1 2 8 1 6 8 0 7 8 6 7 3 1050 2 5 2 1 6 4 5 4 2 0 7 0 5 9 1 8 7 6 6 4 1 3 8 3 7 0 1075 2 0 2 3 6 6 5 5 2 1 7 2 6 0 1 9 7 8 6 6 1 5 8 6 7 2 1100 1 0 2 4 6 7 5 6 2 2 7 3 6 1 2 1 7 9...

Page 19: ... 8 3 4 1 0 4 4 3 9 0 8 5 0 4 5 0 6 5 6 5 0 208 VOLT AND HIGH STATIC DRIVE 965 6 0 1 2 2 7 2 5 0 9 3 2 2 9 0 6 3 7 3 3 0 4 4 4 3 9 0 2 5 0 4 5 980 5 5 1 3 2 9 2 6 1 0 3 4 3 0 0 7 3 8 3 4 0 5 4 5 4 0 0 3 5 1 4 6 1025 4 5 1 4 3 1 2 8 1 2 3 6 3 2 0 9 4 1 3 7 0 7 4 8 4 3 0 4 5 5 4 9 1065 3 5 1 6 3 4 3 0 1 4 3 9 3 5 1 1 4 5 4 0 0 9 5 1 4 6 1125 2 0 1 9 3 6 3 2 1 7 4 4 3 9 1 4 5 0 4 5 1 2 5 8 5 2 1170 1 ...

Page 20: ...0 5 1 0 2 6 9 5 8 980 5 0 1 9 4 5 3 8 1 5 5 4 4 5 1 0 6 3 5 3 0 4 7 2 6 1 995 4 5 2 1 4 5 3 9 1 6 5 5 4 7 1 1 6 4 5 4 0 5 7 5 6 3 1025 3 5 2 3 4 9 4 1 1 8 5 8 4 9 1 3 6 7 5 7 0 7 8 0 6 7 1050 2 5 2 5 5 1 4 3 2 0 6 1 5 1 1 4 7 1 6 0 0 9 8 4 7 0 1065 2 0 2 6 5 3 4 4 2 1 6 3 5 3 1 5 7 3 6 2 1 0 8 6 7 2 1100 1 0 2 9 5 6 4 7 2 3 6 8 5 7 1 8 7 9 6 6 230 460 575 VOLT AND STANDARD DRIVE 870 6 0 1 3 3 6 3 ...

Page 21: ... 980 5 0 1 9 4 5 3 8 1 5 5 4 4 5 1 0 6 3 5 3 0 4 7 2 6 1 0 1 8 5 7 1 995 4 5 2 1 4 5 3 9 1 6 5 5 4 7 1 1 6 4 5 4 0 5 7 5 6 3 0 2 8 6 7 3 1025 3 5 2 3 4 9 4 1 1 8 5 8 4 9 1 3 6 7 5 7 0 7 8 0 6 7 1050 2 5 2 5 5 1 4 3 2 0 6 1 5 1 1 4 7 1 6 0 0 9 8 4 7 0 1065 2 0 2 6 5 3 4 4 2 1 6 3 5 3 1 5 7 3 6 2 1 0 8 6 7 2 1100 1 0 2 9 5 6 4 7 2 3 6 8 5 7 1 8 7 9 6 6 230 460 575 VOLT AND STANDARD DRIVE 870 6 0 1 3...

Page 22: ...8 9 7 0 3 13 7 11 2 1215 4 0 2 7 8 6 7 0 2 1 10 4 8 5 1 4 12 3 10 1 0 6 14 3 11 7 1255 3 0 3 0 9 1 7 4 2 4 11 0 9 0 1 7 12 9 10 6 0 9 15 0 12 3 1290 2 0 3 2 9 5 7 8 2 7 11 5 9 4 2 0 13 5 11 1 1 2 15 6 12 8 1330 1 0 3 5 10 0 8 2 3 0 12 0 9 9 2 3 14 1 11 6 1 5 16 4 13 4 1365 0 0 3 7 10 5 8 6 3 2 12 6 10 3 2 6 14 7 12 1 1 8 17 0 13 9 230 460 575 VOLT AND STANDARD DRIVE 975 6 0 1 4 5 9 4 9 1 0 7 3 6 0...

Page 23: ...NCE IWG CFM 15 TON 17 5 TON 20 TON 25 TON 4500 6000 7200 6000 7500 9000 6000 8000 9400 7500 10000 12500 WET INDOOR COIL 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 ELECTRIC HEAT OPTIONS 18 KW 0 3 0 4 0 4 0 4 0 4 0 5 0 4 0 4 0 5 0 4 0 5 0 6 36 KW 0 3 0 4 0 5 0 4 0 5 0 5 0 4 0 5 0 5 0 5 0 5 0 6 54 KW 0 4 0 5 0 5 0 5 0 5 0 6 0 5 0 5 0 6 0 5 0 6 0 7 72 KW 0 4 0 5 0 5 0 5 0 5 0 6 0 5 0 5 0 6 0 5 0 ...

Page 24: ... 9 100 1 1 7 2 0 0 None 0 0 36 1 45 E18 18 0 1 21 7 36 1 45 E36 36 0 2 43 3 63 1 70 E54 54 0 2 65 0 74 0 90 E72 72 0 2 86 6 95 6 110 575 8 3 78 0 9 5 9 0 0 None 0 0 28 2 35 E18 18 0 1 17 3 29 0 35 E36 36 0 2 34 6 50 7 60 E54 54 0 2 52 0 59 3 70 E72 72 0 2 69 3 76 7 90 J18 17 1 2 208 25 6 190 2 1 20 0 0 0 None 0 0 86 0 110 E18 13 5 1 37 5 86 0 110 E36 27 0 2 75 1 118 7 125 E54 40 6 2 112 6 165 9 17...

Page 25: ...60 17 3 114 1 9 10 0 0 0 None 0 0 56 5 70 E18 18 0 1 21 7 56 5 70 E36 36 0 2 43 3 66 6 70 E54 54 0 2 65 0 77 5 90 E72 72 0 2 86 6 99 1 110 575 13 5 80 1 5 8 2 0 0 None 0 0 44 6 50 E18 18 0 1 17 3 44 6 50 E36 36 0 2 34 6 53 6 60 E54 54 0 2 52 0 62 2 70 E72 72 0 2 69 3 79 5 90 J25 25 208 47 1 245 3 7 38 6 0 0 None 0 0 159 4 200 E18 13 5 1 37 5 159 4 200 E36 27 0 2 75 1 159 4 200 E54 40 6 2 112 6 189...

Page 26: ...9 100 1 1 7 2 5 0 None 0 0 41 1 50 E18 18 0 1 21 7 42 3 50 E36 36 0 2 43 3 69 4 70 E54 54 0 2 65 0 80 2 90 E72 72 0 2 86 6 101 9 110 575 8 3 78 0 9 5 9 4 0 None 0 0 32 2 40 E18 18 0 1 17 3 34 0 40 E36 36 0 2 34 6 55 7 60 E54 54 0 2 52 0 64 3 70 E72 72 0 2 69 3 81 7 90 J18 17 1 2 208 25 6 190 2 1 20 0 10 0 None 0 0 96 0 110 E18 13 5 1 37 5 96 0 110 E36 27 0 2 75 1 131 2 150 E54 40 6 2 112 6 178 4 2...

Page 27: ... 17 3 114 1 9 10 0 5 0 None 0 0 61 5 70 E18 18 0 1 21 7 61 5 70 E36 36 0 2 43 3 72 9 80 E54 54 0 2 65 0 83 7 90 E72 72 0 2 86 6 105 4 110 575 13 5 80 1 5 8 2 4 0 None 0 0 48 6 60 E18 18 0 1 17 3 48 6 60 E36 36 0 2 34 6 58 6 60 E54 54 0 2 52 0 67 2 70 E72 72 0 2 69 3 84 5 90 J25 25 208 47 1 245 3 7 38 6 10 0 None 0 0 169 4 200 E18 13 5 1 37 5 169 4 200 E36 27 0 2 75 1 169 4 200 E54 40 6 2 112 6 201...

Page 28: ... 3 1 3 3 4 3 4 NOM CFM TOTAL Each 4 000 4 000 5 000 5 000 CONDENSER COIL ROWS DEEP 2 FINS PER INCH 20 FACE AREA Sq Ft 63 8 COMPRESSOR Qty Per Unit SCROLL 2 FILTERS QUANTITY PER UNIT 12 X 24 X 2 12 TOTAL FACE AREA Sq Ft 24 CHARGE REFRIGERANT 22 Lb Oz SYSTEM No 1 23 0 24 0 23 8 23 8 SYSTEM No 2 23 8 24 0 23 8 23 8 OPERATING WEIGHTS LBS BASIC UNIT COOLING ONLY 2260 2540 2560 2660 GAS ELECTRIC N24 246...

Page 29: ...the unit control box 3Second stage heating is not required on units with a single stage electric heater 4Terminals A1 and A2 provide a relay output to close the outdoor economizer dampers when the thermostat switches to the set back position NOTE Fans switch must be in ON position for minimum ventilation during heater operation LINE VOLTAGE TERMINAL BLOCK 2TB IN CONTROL BOX GROUND LUG Refer to the...

Page 30: ... 4 21 00 6 3 8 7 1 8 35 5 7 8 136 1 4 GAS OR ELECTRIC HEAT ACCESS DOT PLUG For pressure drop reading BLOWER COMPARTMENT ACCESS Auxiliary C GAS SUPPLY ENTRY CONTROL BOX ACCESS VENT AIR OUTLET HOODS BLOWER MOTOR ACCESS Location of Optional VFD Bypass BLOWER ACCESS Location of Optional VFD 52 5 8 180 19 32 COMPRESSOR ACCESS DISCONNECT SWITCH LOCATION ECONOMIZER MOTORIZED DAMPER FIXED OUTDOOR INTAKE A...

Page 31: ...wer exhaust option The covering consists of a heavy black paper composition 3 Replace the side supply and return air compartment panels For side duct applications 1 Replace the side panels on the supply and return air compartments with the side duct flange accessory kit panels 2 Connect ductwork to the flanges on those panels SUPPLY AIR RETURN AIR OUTDOOR AIR 5 1 8 18 5 8 27 3 4 39 5 8 40 1 2 OUTD...

Page 32: ... CLEARANCES LOCATION CLEARANCE Front 36 Rear 24 Less Economizer 49 With Economizer Left Side Filter Access 24 Less Economizer 36 With Economizer 3 Right Side Cond Coil 36 Below Unit1 1 Units may be installed on combustible floors made from wood or class A B or C roof covering material 0 Above Unit2 2 Units must be installed outdoors Overhanging structures or shrubs should not obstruct condenser ai...

Page 33: ...349687 JTG A 1007 Johnson Controls Unitary Products 33 FIGURE 7 UNIT CENTER OF GRAVITY FIGURE 8 TYPICAL UNIT APPLICATIONS ROOF JACK INSTALLATION ROOF CURB INSTALLATION SLAB ON GROUND INSTALLATION ...

Page 34: ...0 516 964 964 516 J25DJ Gas 3046 531 992 992 531 J15DJ Elec 2460 419 784 819 438 J18DJ Elec 2728 476 888 888 476 J20DJ Elec 2760 481 899 899 481 J25DJ Elec 2846 496 927 927 496 Unit Size Total Shipping Weight 6 Point Loads lbs A B C D E F J15DJ Gas 2660 302 316 453 590 565 434 J18DJ Gas 2928 340 340 488 636 636 488 J20DJ Gas 2960 344 344 493 643 643 493 J25DJ Gas 3046 354 354 508 661 661 508 J15DJ...

Page 35: ...all dimension of the ducts allows duct work penetration between roof joists that are spaced on 72 centers Note Ducts can be installed into the curb from the roof All electrical and gas line connections can be made inside the curb FIGURE 10 UNIT ROOF CURB DIMENSIONS 25 1 4 FIGURE 11 ROOF CURB DUCT OPENINGS DIMENSION FIGURE 12 CUT AWAY OF ROOF CURB ...

Page 36: ...TERMINALS ON A LIMITED NUMBER OF THERMOSTATS 3 1 2 4 3 1 2 4 Second stage heating not required on single stage heating units Second stage cooling not required on single stage cooling units Jumper is required if there is no Smoke Detector circuit Jumper is required for any combination of R RC or RH 6 5 5 6 OCC is an output from the thermostat to indicate the Occupied condition X is an input to the ...

Page 37: ...ve built in field convertible duct connections for down discharge supply return or horizontal discharge supply return and be available with factory installed options or field installed accessories The units shall be factory wired piped charged with R 22 refrigerant and factory tested prior to ship ment All unit wiring shall be both numbered and color coded All units shall be manufactured in a faci...

Page 38: ...odels and an optional feature on CV models UNIT CONTROLS a Unit shall be complete with self contained low volt age control circuit protected by a resetable circuit breaker on the 24 volt transformer side b Unit shall incorporate a lockout circuit which pro vides reset capability at the space thermostat or base unit should any of the following standard safety devices trip and shut off compressor c ...

Page 39: ...economizer oper ation shall be provided by an integral electronic enthalpy control that feeds input into the basic module The out door intake opening shall be covered with a rain hood that matches the exterior of the unit Water eliminator fil ters shall be provided Simultaneous economizer com pressor operation is also possible Dampers shall fully close on power loss BAS READY ECONOMIZER Outdoor an...

Page 40: ...CFM and or static pressure requirements WOOD SKID Allows unit to be handled with 90 forks ECONOMIZER MOTORIZED DAMPER RAIN HOOD J25DJN E C only Contains all hood panels and the hardware for assembling ANTI RECYCLE TIMER Assures 5 minute off time between compressor cycles LOW AMBIENT KIT Provides unit cooling operation down to 0 F COIL GUARD KIT Guard for cooling coil OTHER FACTORY INSTALLED OPTION...

Search results

Summary of Contents for J 18 DJ

Reviews:

Related manuals for J 18 DJ

Brands by name

Popular brands

Johnson Controls J 18 DJ, Technical Manual

Search results

Summary of Contents for J 18 DJ

Reviews:

Related manuals for J 18 DJ

Brands by name

Popular brands