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Johnson Controls 340968-XIM-A-0108 manual

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Table of contents for the manual

  • Page 1

    CONTENTS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 INSTALLATION . . . . . . . .[...]

  • Page 2

    340968-XIM-A-0108 2 Johnson Controls Unitary Products T A BLE OF CONTENTS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 APPROVALS . . . . . . . . . . . . . . .[...]

  • Page 3

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 3 GENERAL YORK Model DNA units are cooling/heating air conditioners designed for outdoor installation. Only gas pipi ng, electric power and duct connection s are required at th e point of installation. The gas-fired heate rs have spark to pilot ignition . The tubul ar heat exchangers are aluminiz[...]

  • Page 4

    340968-XIM-A-0108 4 Johnson Controls Unitary Products INST ALLA TION LIMIT A TIONS These units must be installed in accordance with the follow- ing national and loca l safety codes. 1. National Electrical Code ANSI/NFPS No. 70 or Canadi an Electrical Code Part 1, C22.1 (latest editions). 2. National Fuel Gas Code Z223.1 or CAN/CGA B149 .1 or .2 Ins[...]

  • Page 5

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 5 CLEARANCES All units require certain clearances for proper operation an d service. Refer to T able 10 for the clearances required for combustion, construction, serv icin g and proper unit opera- tion. DUCT WORK These units are adaptable to downflow use as well as rear supply and return air duct[...]

  • Page 6

    340968-XIM-A-0108 6 Johnson Controls Unitary Products SERVICE ACCESS Access to all serviceable components is provided by the fol- lowing removable panels: • Blower compartment • Gas contro l/ el e c tr ical service access Refer to Figure 7 for location of these access panels and min- imum clearances. THERMOST A T The room thermostat should be l[...]

  • Page 7

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 7 T ABLE 3: NA TURAL GAS APPLICA TION DA T A A V AILABLE ON MODELS INPUT (MBH) 1 OUTPUT (MBH) GAS RATE 2 FT. 3 /HR . NUMBER OF BURNERS T E MP. RISE °F AT FULL INPUT 3 MIN. MAX. 1 1/2, 2, 2-1/2, 3, 3-1/2 T ON 45 36 42 2 25 55 2, 2-1/2 70 56 65 3 30 60 3, 3-1/2 T ON 70 56 65 3 25 55 4, 5 T O N 80 [...]

  • Page 8

    340968-XIM-A-0108 8 Johnson Controls Unitary Products GAS PIPING Proper sizing of gas piping d epends on the cubic feet per hour of gas flow required, spec ific gravity of the gas and the length of run. National Fuel Gas Code Z223.1 o r CAN/CGA B149.1 or .2 should be followed in all cases unless super- seded by local codes or gas company requiremen[...]

  • Page 9

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 9 i 4. All piping should be cleaned of dirt and scale by ham- mering on the outside of the pipe and blowi ng out the loose dirt and scale. Before initial start-up, be sure that all of the gas l ines external to the u nit have been purged of air . 5. The gas supply should be a separate line and in[...]

  • Page 10

    340968-XIM-A-0108 10 Johnson Controls Unitary Products T ABLE 7: PHYSICAL DA T A MODEL DNA 018 024 030 036 042 048 060 EV APORA TOR BLOWER CENTRIFUGAL BLOWER (Dia. x W. in.) 10 x 8 10 x 8 10 x 8 1 1 x 10 1 1 x 10 12 x 1 1 12 x 1 1 F AN MOTOR HP (3 S peed) 1/2 1/2 1/2 3/4 3/4 1 1 EV APORA TOR COIL R O W S D E E P 2222333 FINS PER INCH 14 13 13 15 13[...]

  • Page 11

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 11 FIGURE 7 - UNIT DIMEN SIONS - FRONT All dimensions are in inches. They are subject to change with- out notice. Certified dimensions will be provided upon request. T ABLE 9: UNIT DIMENSIONS FRONT UNIT S IZE DIMENSION “A” “B” 018 thru 042 33-1/2 18-1/4 048 and 060 41-1/2 23-1/8 T ABLE 10[...]

  • Page 12

    340968-XIM-A-0108 12 Johnson Controls Unitary Products FIGURE 8 - UNIT DIMENSIONS - FRONT & BOTTOM 2 6 - 3 / 4 6 4 - 5 / 8 8 - 7 / 8 1 1 - 7 / 8 1 9 - 1 / 4 H I G H V O L T A G E C O N N . 1 - 3 / 3 2 " D I A . K N O C K O U T F R O N T C O N D E N S A T E D R A I N 3 / 4 " ' N P T I G A S S U P P L Y 1 - 5 / 8 " D I A . K N[...]

  • Page 13

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 13 SEQUENCE OF OPERA TION The unit is controlled b y a c onventional heating/cooling ther- mostat common to this class of equipment. HEA TING The control board begins a call for he at when W1 is ener- gized (connected to R). The control ignores W2 until pilot ignition has been established. The co[...]

  • Page 14

    340968-XIM-A-0108 14 Johnson Controls Unitary Products The control recognize s a call for 2nd stage heat when W2 is energized (connected to "R"). The control e nergizes the hig h gas output and induced draft motor on high speed. If the call for 2nd stage heat go es away a nd the 1st stage call remains, the control de energize s the high g[...]

  • Page 15

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 15 2. Pressure Switch (PS) - If the draft moto r should fail, the pressure switch prevents the ignition controls and gas valves from being energi zed. 3. Flame Sensor - The flame sensor and controls are located per Proper Fla me Adjustment, Figure 12 . If an ignition control fails to detect a sig[...]

  • Page 16

    340968-XIM-A-0108 16 Johnson Controls Unitary Products 2. T urn off all electric power to the appliance if service is to be performed. 3. Remove the control access panel. 4. T urn the gas valve switch to the OFF position. DO NOT FORCE. 5. Replace the control access panel. POST -ST ART CHECK LIS T (GAS) After the entire control circuit has been ener[...]

  • Page 17

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 17 T o adjust the pilot flame: 1. Remove the pilot adjustment cover screw . 2. Adjust the pilot adjustment screw to achieve the p roper pilot flame. 3. Replace the pilot adjustment cover screw after the pilot flame is set. T o remove the pilot assembly: 1. Disconnect the wiring from the control b[...]

  • Page 18

    340968-XIM-A-0108 18 Johnson Controls Unitary Products CHECKING SUPPLY AIR CFM To check the supply ai r CFM after the initial balancin g has been complete d: 1. Remove the two ¼ inch dot plugs in the duct panel. 2. Insert at least 8 inches of ¼ inch tubing into each of these holes for sufficient penetration into the a irflow on both sides of the [...]

  • Page 19

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 19 FIGURE 13 - DNA COIL DELTA P VS. AIRFLOW DNA018 DNA024-30 DNA042 DNA048-60 ID Coil Delta P DNA Coil Delta P vs Airflow Airflow (CFM) DNA036 DNA024-30 DNA036 DNA042 DNA048-60 DNA018 400 600 800 1600 1200 1400 2000 1000 2200 1800 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 T ABLE 13: SUPERHEA T CHARGI[...]

  • Page 20

    340968-XIM-A-0108 20 Johnson Controls Unitary Products T ABLE 14: SUPERHEA T CHARGING T ABLE FOR DNA024 OUTDOOR TEMP . °F SUPERHEA T A T COMPRESSOR SUCTION (F), AIRFLOW = 400 CFM INDOOR WB TEMP . (°F) 55 57 59 61 63 65 67 69 71 73 75 65 13.9 16.5 19.0 21.5 24.1 26.6 29.2 29.7 30.3 30.9 31.5 70 9.5 12 .5 15.5 18.5 21.5 24.5 27.5 28.2 28.8 29.4 30.[...]

  • Page 21

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 21 T ABLE 17: SUPERHEA T CHARGING T ABLE FOR DNA042 OUTDOOR TEMP . °F SUPERHEA T A T COMPRESSOR SUCTION (F), AIRFLOW = 400 CFM INDOOR WB TEMP . (°F) 55 57 59 61 63 65 67 69 71 73 75 65 18.0 19.7 21.4 23.0 24.7 26.3 28.0 29.1 30.2 31.3 32.4 70 13.4 15.3 17.3 19.3 21.2 23.2 25.2 26.6 28.1 29.6 31[...]

  • Page 22

    340968-XIM-A-0108 22 Johnson Controls Unitary Products FIGURE 14: TYPICAL WIR ING DIAGRAM DNA 018 THRU 060 (208/230-1-60 POWER SUPPL Y)[...]

  • Page 23

    340968-XIM-A-0108 Johnson Controls Unitary Produ cts 23 TYPICAL WIRING DIAGRAM NOTES (SEE FIGURE 14) 1. All field wiring to be accomplished following ci ty , local and/or national codes in effect at time of installation of this unit. 2. Caution: Label all wires prior to disconnection when ser- vicing controls. Wiring errors can cause improper and d[...]

  • Page 24

    Subject to change without notice. Pr inted in U.S.A. 340968-XIM-A-0108 Copyright © 2008 b y Johnson Controls, Inc. All rig hts reserved. Supersedes: 286483-XIM-B-0807 Johnson Controls Unita ry Products 5005 York Drive Norman, OK 73069[...]