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INSTALLATION
SINGLE PACKAGE
AIR CONDITIONERS
MANUAL
ELECTRIC/ELECTRIC,
AIR-COOLED
TABLE OF CONTENTS
DEM024 THRU 060
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 THRU 5 TON (13 SEER
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 16
See the following page for a complete Table of Contents.
NOTES, CAUTIONS AND WARNINGS
The installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes are intended to
clarify or make the installation easier. Cautions are given to
prevent equipment damage. Warnings are given to alert
installer that personal injury and/or equipment damage
may result if installation procedure is not handled properly.
SO 9001
Certified Quality
Management System
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
343633-YIM-B-0408
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Related Manuals for Johnson Controls DEM024
Summary of Contents for Johnson Controls DEM024
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Page 1: Table Of Contents
TABLE OF CONTENTS DEM024 THRU 060 GENERAL ........3 2 THRU 5 TON (13 SEER INSPECTION. - Page 2 6 ADDITIONAL STATIC RESISTANCE ....9 7 DEM024 SUPERHEAT CHARGING TABLE ..11 8 DEM030 SUPERHEAT CHARGING TABLE ..11 9 DEM036 SUPERHEAT CHARGING TABLE .
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Page 3: General
024 = 24,000 BTUH 042 = 42,000 BTUH PRODUCT IDENTIFIER A = No Electric Heat Inst alled 030 = 30,000 BTUH 048 = 48,000 BTUH EM = 13 SEER Cooling Models 036 = 36,000 BTUH 060 = 60,000 BTUH Johnson Controls Unitary Products... -
Page 4: Installation
For roof top installation, be sure the structure will support obstruct the condenser air discharge outlet. the weight of the unit plus any field installed components. Unit must be installed on a level roof curb or appropriate Johnson Controls Unitary Products... -
Page 5: Duct Work
CONDENSATE DRAIN A condensate trap is required to be installed in the condensate drain. The plumbing must conform to local codes. Use a sealing Do not loosen compressor mounting bolts, except on rotary compressors. Johnson Controls Unitary Products... -
Page 6: Rotary Compressor Mounting
REFER TO ELECTRICAL DATA REFER TO ELECTRICAL DATA TABLES TO SIZE THE DIS- TABLES TO SIZE THE DIS- CONNECT SWITCH, WIRING & CONNECT SWITCH, WIRING & OVERCURRENT PROTECTION OVERCURRENT PROTECTION FIGURE 3: TYPICAL FIELD WIRING DIAGRAM Johnson Controls Unitary Products... -
Page 7: Electrical Data / Electric Heat
18.8 / 25 52.2 / 60.1 72.7 / 82.7 80 / 90 (4.0) None 12.5 2NH04501046 18.8 460-3-60 2NH04501546 26.3 2NH04502046 24.1 33.8 2NH04502546 30.1 41.3 None 10.3 2NH04501058 575-3-60 2NH04501558 14.4 2NH04502058 19.2 27.1 2NH04502558 24.1 33.1 Johnson Controls Unitary Products... -
Page 8: Side And Bottom Duct Application
1104 Medium (3) 2003 1030 1922 1829 1104 1712 1134 1528 1146 Medium/High (4) 2120 1073 2021 1069 1908 1127 1769 1148 1567 1154 High (5) 2214 1104 2089 1121 1949 1136 1785 1148 1576 1154 Johnson Controls Unitary Products... -
Page 9: Additional Static Resistance
1. 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 is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation. Johnson Controls Unitary Products... -
Page 10: Checking Supply Air Cfm
D M Coil Delta P vs’ Airflow 0.35 3.0 Ton 3.5 - 5.0 Ton 0.25 0.15 2.0 Ton 2.5 Ton 0.05 1000 1200 1400 1600 1800 2000 Airflow (CFM) FIGURE 4: COIL DELTA P VS AIRFLOW Johnson Controls Unitary Products... -
Page 11: Dem024 Superheat Charging Table
343633-YIM-B-0408 TABLE 7: DEM024 SUPERHEAT CHARGING TABLE OUTDOOR SUPERHEAT AT COMPRESSOR SUCTION (°F), AIRFLOW = 400 CFM/TON INDOOR WB TEMPERATURE (°F) TEMPERATURE (°F) 20.8 22.5 24.2 25.8 27.5 29.1 30.8 31.5 32.2 32.8 33.5 19.8 21.5 23.1 24.8 26.4 28.1 29.8... -
Page 12: Dem042 Superheat Charging Table
24.1 27.0 28.5 30.0 10.3 12.5 14.6 16.8 20.6 24.4 26.3 28.2 10.6 12.4 17.1 21.8 24.1 26.4 14.8 19.8 22.3 24.7 12.6 17.8 20.4 23.0 10.8 15.2 17.4 19.6 12.7 14.5 16.3 10.1 11.5 12.9 Johnson Controls Unitary Products... -
Page 13: Dimensions And Clearances
Units may be installed on combustible floors made from wood or class A, B or C roof covering material. Units must be installed outdoors. Overhanging structures or shrubs should not obstruct outdoor air discharge outlet. FIGURE 5: DIMENSIONS AND CLEARANCES Johnson Controls Unitary Products... -
Page 14: Sequence Of Operation For Dem Models
“AUTO” position, the indoor motor will fan switch is in the “AUTO” position, the 24 volt “G” signal shut off after the appropriate time delay. Please refer to Tables 13 and 14 for more information. Johnson Controls Unitary Products... -
Page 15: Thermostat Signals (Single Phase Units) . 15 14 Thermostat Signals (Three Phase Units)
HEATER BANK 2 (HTR 4, 5 & 6) ½ SEC. DELAY ON ”W2” HEATER BANK 1 (HTR 1, 2 & 3) 1 SECOND DELAY OFF HEATER BANK 1 (HTR 1, 2 & 3) 1 SECOND DELAY ON FAN 10 SECOND DELAY OFF FAN 10 SECOND DELAY OFF Johnson Controls Unitary Products... -
Page 16: Maintenance
The wire number or color and terminal designations referred to may vary. Check the wiring label inside the control box access panel for the correct wiring. Johnson Controls Unitary Products... -
Page 17: Typical Wiring Diagram (208/230-1-60 Power Supply) Dem Models
343633-YIM-B-0408 FIGURE 6: TYPICAL WIRING DIAGRAM (208/230-1-60 POWER SUPPLY) DEM MODELS Johnson Controls Unitary Products... -
Page 18: Typical Wiring Diagram (208/230-3-60 Power Supply) Dem Models
343633-YIM-B-0408 FIGURE 7: TYPICAL WIRING DIAGRAM (208/230-3-60 POWER SUPPLY) DEM MODELS Johnson Controls Unitary Products... -
Page 19: Typical Wiring Diagram (460/575-3-60 Power Supply) Dem Models
343633-YIM-B-0408 FIGURE 8: TYPICAL WIRING DIAGRAM (460/575-3-60 POWER SUPPLY) DEM MODELS Johnson Controls Unitary Products... - Page 20 Subject to change without notice. Printed in U.S.A. 343633-YIM-B-0408 Copyright © 2008 by Johnson Controls, Inc. All rights reserved. Supersedes: 343633-YIM-A-1007 Johnson Controls Unitary Products 5005 York Drive Norman, OK 73069...
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