Johnson Controls 18 SEER - CZH Installation Manual
Johnson Controls 18 SEER - CZH Installation Manual

Johnson Controls 18 SEER - CZH Installation Manual

R-410a outdoor split-system air conditioning
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INSTALLATION MANUAL
R-410A
OUTDOOR SPLIT-SYSTEM
AIR CONDITIONING
MODELS: 18 SEER - CZH / AC8B / AL8B SERIES
2 TO 5 TONS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
TXV INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Tubing Hanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Underground Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Heat Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Typical Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Communications Harness Connection . . . . . . . . . . . . . . . . . . . . . . . . . 6
CFM Selection Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
or Furnace using Communicating Interface Control . . . . . . . . . . . . . . . 7
R-410A Saturation Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TEST Input Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Operational Mode Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Status Code Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SECTION I: GENERAL
The outdoor units are designed to be connected to a matching indoor
coil with sweat connect lines. Sweat connect units are factory charged
with refrigerant for the smallest rated indoor coil plus 15 feet of field
supplied lines.
Matching indoor coils are available with a thermal expansion valve or
an orifice liquid feed sized for the most common usage. The orifice size
and/or refrigerant charge may need to be changed for some system
combinations, elevation differences, or total line lengths. See Tabular
Data Sheet provided in unit literature packet for charge requirements.
Refer to Application Data covering "General Piping Recommendations
and Refrigerant Line Length" (Part Number 036-61920-001).
SECTION II: SAFETY
This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal
injury.
Understand and pay particular attention to the signal words DANGER,
WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.

TABLE OF CONTENTS

EVACUATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
SYSTEM CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Instructing the Owner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
LIST OF FIGURES
Two Stage Variable Speed Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . .8
Two Stage Variable Speed Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . .9
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
LIST OF TABLES
Status Code Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Operational Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Sensor or Switch Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Wiring Related Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
CAUTION indicates a potentially hazardous situation, which, if not
avoided may result in minor or moderate injury. It is also used to
alert against unsafe practices and hazards involving only property dam-
age.
Improper installation may create a condition where the operation of
the product could cause personal injury or property damage.
Improper installation, adjustment, alteration, service, or mainte-
nance can cause injury or property damage. Refer to this manual
for assistance or for additional information, consult a qualified con-
tractor, installer, or service agency.
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.
R-410A systems operate at higher pressures than R-22 systems.
Do not use R-22 service equipment or components on R-410A
equipment. Service equipment
ISO 9001
Certified Quality
Management System
Must Be Rated
for R-410A.
501562-UIM-A-0909

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Summary of Contents for Johnson Controls 18 SEER - CZH

  • Page 1: Table Of Contents

    OUTDOOR SPLIT-SYSTEM AIR CONDITIONING ISO 9001 Certified Quality MODELS: 18 SEER - CZH / AC8B / AL8B SERIES Management System 2 TO 5 TONS TABLE OF CONTENTS GENERAL ..........1 EVACUATION .
  • Page 2: Unit Installation

    After a total of 10 hours run time where the suction-line pressure drop has not exceeded 3 psig, replace the liquid line drier, and remove the suction-line drier. Never leave a suction-line drier in the system longer than 50 hours of run time. Johnson Controls Unitary Products...
  • Page 3: Piping Connections

    Apply with Models Filter-Drier 3. Care must also be taken to isolate the refrigerant lines to minimize Source 1 Part No. noise transmission from the equipment to the structure. 029-22195-000 Johnson Controls Unitary Products...
  • Page 4: Tubing Hanger

    Always use a pressure regulator and safety valve to insure that only low pressure dry nitrogen is introduced into the tubing. Only a small flow is necessary to displace air and prevent oxidation. Johnson Controls Unitary Products...
  • Page 5: Txv Installations

    Hand modify the liquid line to align with casing opening. Hand tighten the liquid line and an addi- tional 1/4 turn to seal. Johnson Controls Unitary Products...
  • Page 6: Communications Harness Connection

    NOTE: To eliminate erratic operation, seal the hole in the wall at the thermostat with Pergamum or equivalent to prevent air drafts affecting the operation of the thermostat. Johnson Controls Unitary Products...
  • Page 7: Cfm Selection Board

    C or C Wire per non-comm. FIGURE 7: CFM Selection Board installation manual Assume that connections are from thermostat DHUM DHUM FIGURE 9: Communicating AC with Non-Communicating Air Handler or Furnace using Communicating Interface Control Johnson Controls Unitary Products...
  • Page 8: Thermostat Chart - Two Stage Ac - Two Stage Variable Speed Furnaces

    Multistage Conventional Thermostat Installer Setup 15-Compressor Protection -must be set to 5 Part Numbers: Part Number: SAP = Legacy S1-2HU16700124 265904 = 031-09169 FIGURE 10: Thermostat Chart - Two Stage AC – Two Stage Variable Speed Furnaces Johnson Controls Unitary Products...
  • Page 9: Thermostat Chart - Two Stage Ac - Two Stage Variable Speed Furnaces

    Connection of the “C” Terminal, 24-Volt Common, is optional when used with batteries Part Numbers: Part Number: SAP = Legacy S1-2HU16700124 265904 = 031-09169 FIGURE 11: Thermostat Chart - Two Stage AC – Two Stage Variable Speed Furnaces Johnson Controls Unitary Products...
  • Page 10: Thermostat Chart - Two Stage Ac - Variable Speed Furnaces

    Multistage Conventional Multistage Conventional Thermostat Installer Setup 15-Compressor Protection -must be set to 5 Part Numbers: SAP = Legacy Part Number: 171334 = 031-09153 S1-2HU16700124 FIGURE 12: Thermostat Chart - Two Stage AC – Variable Speed Furnaces Johnson Controls Unitary Products...
  • Page 11: Thermostat Chart - Two Stage Ac - Variable Speed Furnaces

    Connection of the “C” terminal, 24-Volt common is optional when used with batteries Part Numbers: SAP = Legacy Part Number: 171334 = 031-09153 S1-2HU16700124 FIGURE 13: Thermostat Chart - Two Stage AC – Variable Speed Furnaces Johnson Controls Unitary Products...
  • Page 12: Thermostat Chart - Two Stage Ac - Variable Speed Furnaces

    Multistage Conventional Multistage Conventional Thermostat Installer Setup 15-Compressor Protection -must be set to 5 Part Numbers: Part Number: SAP = Legacy S1-2HU16700124 159481 = 031-09157 FIGURE 14: Thermostat Chart - Two Stage AC – Variable Speed Furnaces Johnson Controls Unitary Products...
  • Page 13: Thermostat Chart - Two Stage Ac - Variable Speed Furnaces

    W1 and W2 electric batteries heat staging options. Part Numbers: Part Number: SAP = Legacy S1-2HU16700124 159481 = 031-09157 FIGURE 15: Thermostat Chart - Two Stage AC – Variable Speed Furnaces Johnson Controls Unitary Products...
  • Page 14: System Charge

    Remove and recover the refrigerant if the subcooling TC is higher than the recommended level. See Table 1 Total system charge is determined as follows: for R-410A saturation temperatures. 1. Determine outdoor unit charge from tabular data sheet. Johnson Controls Unitary Products...
  • Page 15: Test Input Functionality

    The control includes a TEST input connector that can be used for vari- ous testing functions during installation and service. Table 2 summa- rizes the behavior of the control when the two TEST pins are connected. Johnson Controls Unitary Products...
  • Page 16: Operational Mode Display

    Control normal operation – with active communication present System is active and presently communicating successfully. 0.1 sec OFF Control powered – without active communication present System has 24 VAC present and the microprocessor is active. 2s ON / 2s OFF Johnson Controls Unitary Products...
  • Page 17: Operational Fault Codes

    (24 VAC) must be cycled to the control for the control to sense the wiring change and clear the lockout condition. LED1 Flash LED2 Flash Description Code (Red) Code (Green) Compressor contactor miswire Y2 present without Y1 Johnson Controls Unitary Products...
  • Page 18: Cooling Operation

    • Has no effect on operation. • Not required for operation, but a fault code will be displayed when sensor is not connected or if sensor is shorted. Johnson Controls Unitary Products...
  • Page 19: Wiring Diagram

    501562-UIM-A-0909 SECTION IX: WIRING DIAGRAM FIGURE 16: Wiring Diagram Johnson Controls Unitary Products...
  • Page 20 NOTES Subject to change without notice. Published in U.S.A. 501562-UIM-A-0909 Copyright © 2009 by Johnson Controls, Inc. All rights reserved. Supersedes: 347269-UIM-A-0108 Johnson Controls Unitary Products 5005 York Drive Norman, OK 73069...

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