Bosch CL Series - UPM Sequence of Operation

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Safety Devices and the UPM Controller Overview

12.3 UPM Sequence of Operation

Fig. 22 UPM Sequence of Operation Flowchart

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CL Series Heat Pumps — 8733838716 (2024/05)

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Default Chapter2
- Table of Contents2
1 Document Conventions4
- Key to Symbols4
- General Safety Instructions4
- Refrigerant Safety Warnings5
2 Model Nomenclature7
3 General Description8
- Operating Limits9
- Approved Supplementary Heaters10
4 Inspecting and Storing the Equipment11
- Moving and Storage11
- Initial Inspection11
- Inspection and Unpacking Prior to Installation11
5 Unit Installation12
- Location Selection12
- Protecting the Unit During Construction13
- Return and Supply Air Duct Flanges Preparation13
- Mounting Vertical (VT) Units13
- Horizontal (HZ) Units13
- Condensate Drain16
- Duct System17
- Piping17
- Electrical-Power Supply Wiring19
- Electrical-Low-Voltage Wiring20
- ECM Interface Board23
6 Specific Application Considerations24
- Well Water Systems24
- Open Well Water Systems24
- Cooling Tower/Boiler Systems25
- Geothermal Closed-Loop Systems26
7 Water-Quality Considerations27
8 Post-Installation System Checkout29
9 Pre-Start-Up29
- Air Coil29
- Checking Scroll Compressor Rotation29
10 Start-Up30
- Unit Start up Cooling Mode30
- Unit Start up Heating Mode30
11 Commissioning30
12 Safety Devices and the UPM Controller Overview31
- UPM Default Settings and DIP Switch Positions33
- UPM Board Features33
- UPM Sequence of Operation35
13 Options36
- Unit Mounted Non-Fused Disconnect Switch36
- Internal Two-Way Water Valve36
- Economizer36
- Hot Gas Reheat37
- Boilerless Control37
- Option Card (Included with Economizer, Hot Gas Reheat And/Or Boilerless Control Options)38
- Refrigerant Leak Detection System Option39
14 Fan Motor Options39
- Permanent Split Capacitor Motors (PSC)39
- Constant Torque Motors (ECM)42
- Constant Airflow Motors (ECM)47
15 Maintenance50
- Filter Changes50
- Annual Checkup50
- Annual Condensate Drain Cleaning50
16 Handling Periodic Lockouts50
17 Servicing and Repair Information50
- Personal Protective Equipment50
- Confined Space Work50
- Controlled Work Procedure50
- Safety Checks50
- Checks to Electrical Devices51
- Repairs to Sealed Components51
- Repair to Intrinsically-Safe Components51
- Check Cabling51
- Detection of Flammable Refrigerants51
- Removal and Evacuation52
- Charging Procedures52
- Recovery52
- Service Access53
18 Decommissioning Information54
- Protecting the Environment54
- Decommissioning Procedure54
- Labeling54
19 Troubleshooting55
- Unit Troubleshooting55
- Option Card Troubleshooting61
20 Specification Tables62
- Operating Temperatures and Pressures62
- Water-Side Pressure Drop Table68
- Compressor Characteristics69
- Corner Weights (Horizontal Cabinets Only)70
- Model 24 Thermistor (Freeze Sensor) Test Values71
21 Wiring Diagrams72
- Single-Stage, Single-Phase, Standard Unit with Permanent Split Capacitor (PSC) Motor72
- Single-Stage, Single-Phase, Standard Unit with Constant Torque (CT) Motor73
- Single-Stage, Single-Phase, Standard Unit with Constant Airflow (CA) Motor74
- Single-Stage, Single-Phase Unit with Optional Components and PSC Motor75
- Single-Stage, Single-Phase Unit with Optional Components and CT Motor76
- Single-Stage, Single-Phase Unit with Optional Components and CA Motor77
- Single-Stage, Single-Phase Unit with CT Motor and Electric Heat78
- Single-Stage, Single-Phase Unit with CA Motor and Electric Heat79
- Single-Stage, Single-Phase Unit with Optional Components, CT Motor, and Electric Heat80
- Components, CA Motor, and Electric Heat81
- Single-Stage, Three-Phase, Standard Unit with PSC Motor82
- Single-Stage, Three-Phase, Standard Unit with CT Motor83
- Single-Stage, Three-Phase, Standard Unit with CA Motor84
- Single-Stage, Three-Phase Unit with Optional Components and PSC Motor85
- Single-Stage, Three-Phase Unit with Optional Components and CT Motor86
- Single-Stage, Three-Phase Unit with Optional Components and CA Motor87
22 Dimensional Drawings88
- Vertical (VT) Unit Dimensions88
- Vertical (VT) Cabinet Options Dimensions90
- Horizontal (HZ) Unit Dimensions92
- Horizontal (HZ) Cabinet Options Dimensions94
- Service Clearance96
23 Terminology97
- Acronyms97
- Terms97
24 Check-Out Sheet98
25 Notes99

Bosch CL Series - UPM Sequence of Operation

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