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689103-BIM-B-1012

R-410A
OUTDOOR SPLIT-SYSTEM 
HEAT PUMP

MODELS: 
CHJD FLEX SERIES

INSTALLATION MANUAL

®

LIST OF SECTIONS

GENERAL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT INSTALLATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
INSTRUCTING THE OWNER   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
WIRING DIAGRAM   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

LIST OF FIGURES

Typical Installation with Required Clearances  . . . . . . . . . . . . . . . . . . . 2
Minimum Suction Line Form   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Excess Tubing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Insulation of Vapor Line  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Typical Quick Connect Refrigerant Line Set   . . . . . . . . . . . . . . . . . . . . 4
Quick Connect Coupling Connections  . . . . . . . . . . . . . . . . . . . . . . . . . 4

Outdoor Unit Control Box  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
Typical Wiring with Thermostat and Furnace / Air Handler   . . . . . . . .  5
Demand Defrost Control Module   . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
Defrost Operation Curves  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
Heat Pump Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
Wiring Diagram  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

LIST OF TABLES

TEST Input Functionality  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
X/L Output Categories  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Defrost Initiate Curves   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7

SECTION I: GENERAL

These outdoor heat pump units are designed to be connected to a
matching UPG indoor coil. They are equipped with a solid core filter-
drier located in the discharge line and a high pressure switch.

These units are supplied with quick-connect coupling connections that
are factory charged with refrigerant to be matched with the appropriate
pre-charged line set, and UPG indoor coil.

The outdoor unit is designed to be placed near the perimeter of the
home, typically alongside or at the back of the home, remote from the
indoor coil. The outdoor unit has been factory run-tested and all compo-
nents of the system are ready for easy, immediate installation.

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

.

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.

INSPECTION

As soon as a unit is received, it should be inspected for possible dam-
age during transit. If damage is evident, the extent of the damage
should be noted on the carrier’s delivery receipt. A separate request for
inspection by the carrier’s agent should be made in writing. See Local
Distributor for more information.

LIMITATIONS

The unit should be installed in accordance with all National, State, and
Local Safety Codes and the limitations listed below:

1. Limitations for the indoor unit, coil, and appropriate accessories

must also be observed.

2. The outdoor unit must not be installed with any duct work in the air

stream. The outdoor fan is the propeller type and is not designed to
operate against any additional external static pressure.

3. The maximum and minimum conditions for operation must be

observed to assure a system that will give maximum performance
with minimum service.

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 maintenance
can cause injury or property damage. Refer to this manual for assis-
tance or for additional information, consult a qualified contractor,
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.

Summary of Contents for CHJD FLEX SERIES

Page 1: ...ntly 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 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 ...

Page 2: ...in the pre determined location 2 Remove the shipping carton and inspect for possible damage 3 Compressor tie down bolts should remain tightened 4 Position the unit on the base provided LIQUID LINE FILTER DRIER The heat pumps have a solid core bi flow filter drier located on the liquid line AIR TEMPERATURE AT OUTDOOR COIL F AIR TEMPERATURE AT INDOOR COIL F Min Max Min Max DB Cool DB Heat DB Cool DB...

Page 3: ...susceptible to kinking and damage 3 Forming Copper for copper tubing only a No attempt should be made to bend the suction line in a shorter radius than 12 See Figure 2 4 How to dispose of excess tubing a Tubing may be longer than required Coil excess tubing nearer the indoor coil rather than the outdoor unit b Excess tubing must be coiled horizontally so the flow of refriger ant is from top to bot...

Page 4: ...ut d Then tighten an additional 1 6 turn to complete the knife edge seal 10 Check for leaks a After the line set connections have been made they should be checked for leaks b If the valves were kept clean and lubricated per instruction no leaks should be found c Use leak detect solution or soap solution for leak testing An elec tronic leak detector is recommended REFRIGERANT LINE SUPPORT Refrigera...

Page 5: ... wiring to be in accordance with national electrical codes NEC and or local city codes 5 Mount the thermostat about 5 feet above the floor where it will be exposed to normal room air circulation Do not place it on an outside wall or where it is exposed to the radiant effect from exposed glass or appliances drafts from outside doors or supply air grilles 6 Route the 24 volt control wiring NEC Class...

Page 6: ...OST OPERATION General The control maintains proper airflow through the outdoor coil during heating operation by melting frost and ice that may form on the coil Frost may accumulate unevenly in different sections of the coil because of the arrangement of the refrigeration circuit within the coil The control may initiate a defrost cycle even when the coil is not completely cov ered with frost This i...

Page 7: ...defrost cycle is necessary The control will initiate a defrost cycle when the liquid line temperature is below the initiate point for the measured ambient temperature See Figure 10 continuously for 4 1 2 minutes This delay eliminates unnec essary defrost cycles caused by refrigeration surges such as those that occur at the start of a heating cycle The control will initiate a defrost cycle every 6 ...

Page 8: ...t cycle delay timer and start the compressor when the timer expires When the compressor is started following a pressure switch fault the control will start a six hour timer based on accumulated compressor run time If the control senses another opening of the pressure switch before the timer expires it will cause a soft lockout condition The sec ond opening of the pressure switch must be greater th...

Page 9: ...rcuit Clean as often as necessary to keep the unit clean Use a brush vacuum cleaner attachment or other suit able means 2 The outdoor fan motor is permanently lubricated and does not require periodic oiling 3 If the coil needs to be cleaned it should be washed with Calgon Coilclean mix one part Coilclean to seven parts water Allow solu tion to remain on coil for 30 minutes before rinsing with clea...

Page 10: ...ce Published in U S A 689103 BIM B 1012 Copyright 2012 by Johnson Controls Inc All rights reserved Supersedes 689103 BIM A 0412 York International Corp 3110 N Mead Wichita KS 67219 SECTION VII WIRING DIAGRAM FIGURE 12 Wiring Diagram ...

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