Bosch CA Series - Table of Contents

Installation, Operation, and Maintenance Manual
CA Series Heat Pumps -8733851021 (2025/04) US
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Table of Contents
1 Document Conventions 4
1.1 Key to Symbols 4
1.1.2 Important information 4
1.2 General Safety Instructions 4
1.2.1 Refrigerant Safety Warnings 5
2 Model Nomenclature 6
3 General Description 7
3.1 Operating Limits 7
3.1.1 Environment 7
3.1.2 Power Supply 7
3.1.3 Unit Starting Conditions 7
3.1.4 Normal Operating Conditions 7
4 Standard Package 9
5 Initial Inspection 9
6 Moving And Storage 9
7 Location 9
8 Installation 10
9 Piping 10
9.1 Supply and Return Piping 10
9.2 Condensate Piping 10
9.3 Hose Kits 10
10 Electrical 11
10.1 Electrical High Voltage Wiring 11
10.1.1 Standard Unit's Power Supply 11
10.1.2 Units with Disconnect Switch Power Supply 11
10.1.3 Transformer Settings for 208/230-V Units 12
10.2 Electrical Low Voltage Wiring 12
10.2.1 Remote Mounted Controller (RMC) Wiring 12
10.2.2 Thermostat to HVAC Equipment Wiring 12
10.3 Unit Mounted Controller (UMC) 13
11 Safety Devices and the UPM Controller Overview 14
11.1 UPM Default Settings and DIP Switch Positions 16
11.2 UPM Board Features 16
11.3 UPM Sequence of Operation 18
12 Water-Quality Considerations 19
13 Water Quality Table 20
14 Post-Installation System Checkout 21
15 Start-up 21
15.1 Unit Start Up Cooling Mode 21
15.2 Unit Start Up Heating Mode 21
16 Commissioning 21
17 Maintenance 22
17.1 Filter Cleaning 22
17.2 Annual Checkup 22
17.3 Annual Condensate Drain Cleaning 22
17.4 Handling Periodic Lockouts 22
18 Servicing and Repair Information 22
18.1 Conned Space Work 22
18.2 Controlled Work Procedure 22
18.3 Safety Checks 22
18.3.1 Inform Everyone in the General Work Area 22
18.3.2 Check for the Presence of Refrigerant 22
18.3.3 Fire Extinguisher 22
18.3.4 Ignition Sources 22
18.3.5 Ventilated Area 22
18.3.6 Checks to the Refrigerating Equipment 23
18.4 Checks to Electrical Devices 23
18.5 Repairs to Sealed Components 23
18.6 Repair to Intrinsically Safe Components 23
18.7 Check Cabling 23
18.8 Detection of Flammable Refrigerants 23
18.9 Removal and Evacuation 24
18.10 Charging Procedures 24
18.11 Recovery 24
19 Decommissioning Information 25
19.1 Protecting the Environment 25
19.1.1 Components 25
19.1.2 Refrigerant 25
19.1.3 Hazardous Waste 25
19.2 Decommissioning Procedure 25
19.3 Labeling 25
20 Troubleshooting 26
20.1 Unit Troubleshooting 26
20.1.1 Online Help Resources 26
21 Blower Performance Data 32
22 Waterside Pressure Drop 33
23 Operating Data 34
24 Model 24 Thermistor (Freeze Sensor) Test Values 36
25 Wiring Diagrams 37
26 Schematic 39
27 Dimensional Drawings 40
27.1 Standard & Extended Length Dimensions 40
27.2 Outside Cabinet Drawings 41
27.3 Internal Connections Drawing 42
28 Terminology 43
28.1 Acronyms 43
28.2 Terms 43
29 Check-Out Sheet 44