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YH5 Series
Johnson Controls YH5 Series - User Manual
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Supersedes: 6396605-UIM-A-0224
Y
ork International Corporation, 5005
Y
ork Drive, Norman, OK 73069
2024-07-22
Johnson Controls Ducted Systems
Installation Manual: R-454B Out
door
Split-
Sy
st
em Single
-Phase He
at Pump -
Y
H5 and X
H5 Series
6396605-UIM-B-0724
2
Table of Contents
Main Page
Table of Contents
3
About the Unit
5
Certification
5
DS Solutions App
5
Safety
6
Understanding Safety Symbols and Instructions
6
Safety Requirements
7
A2L Refrigerant Safety Considerations
8
General
8
Room Size Requirements
9
Mechanical Ventilation
11
Refrigerant Equipment Checks
11
Electrical Devices Checks
12
Detection of Refrigerant
12
Wiring Installation
13
Installation Overview
16
Preparing for Installation
17
Selecting a Location for Installation
17
Inspecting the Unit
19
Understanding Installation and Operation Limitations
19
Meeting Requirements for A2L Equipment
19
Installing the Outdoor Unit
21
Setting the Outdoor Unit on the Ground or on a Roof
21
Mounting the Outdoor Unit on a Wall
23
Installing the Outdoor Unit as a Replacement Unit
23
Installing the Refrigerant Piping
25
Installing the Vapor and Liquid Lines
25
Installing the Liquid Line Filter-Drier
27
Brazing the Refrigerant Lines and Service Valves
27
Installing the Thermostatic Expansion Valve (TXV)
29
Checking for Refrigerant Leaks
32
Evacuating the Refrigerant Lines and Indoor Coil
32
Releasing Refrigerant into the System
33
Connecting the Wiring
34
General Information and Grounding the Unit
34
Completing the Field Power Wiring Connections
35
Completing the Field Control Wiring Connections
35
Control Wiring Diagrams
37
Using the Optional S1-2HU16700124 Dehumidification Control
40
Charging the System
41
Measuring Indoor Airflow
42
Checking the Indoor Cubic Feet Per Minute (CFM) Settings
42
Determining the Total System Charge
42
Charging with Gauges
43
Subcooling Charging Charts
44
Heating Charging Charts
51
Starting up the System
56
Energizing the Crankcase Heater (if Applicable)
56
Instructing the Owner
57
Maintenance and Repair
57
Required Procedures for A2L Systems
58
Decommissioning
59
Test Input
60
System Components and Operation
62
Anti-Short-Cycle Delay
62
Low Voltage Detection
62
Fault Code Display
62
Demand Defrost
63
Operating Demand Defrost
63
Defrost Curves
64
Defrost Curve Selection
64
Defrost Cycle Initiation
64
Defrost Inhibition
64
Defrost Termination
65
Cooling Operation
65
Heating Operation
65
Emergency Heat
65
Pressure Switch Fault Detection and Lockout
66
Third-Party Trademarks Notice
66
Wiring Diagrams
67
Start-Up Sheet
69
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Johnson Controls YH5 Series Specifications
General
Brand
Johnson Controls
Model
YH5 Series
Category
Heat Pump
Language
English
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