Related Manuals for Bosch QV Series
Summary of Contents for Bosch QV Series
- Page 1 QV Series Heat Pumps QV024 | QV030 | QV036 | QV042 | QV048 | QV060 Installation, Operation, and Maintenance Manual...
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Page 2: Table Of Contents
QV Series Heat Pumps CONTENTS Operating Limits ............25 Start-up................26 Document Conventions ............3 Unit Start Up Cooling Mode..........26 Key to Symbols............3 Unit Start Up Heating Mode .........26 Safety Warnings..............3 Commissioning ..............26 Model Nomenclature ............5 Safety Devices and the UPM Controller Overview....27 General Description ............6... -
Page 3: Document Conventions
QV Series Heat Pumps Document Conventions | 3 DOCUMENT CONVENTIONS DANGER: ELECTRIC SHOCK Key to Symbols Before performing service or maintenance Warnings operations on the system, turn off main Warnings in this document are identified by power to the unit. Electrical shock will a warning triangle printed against a gray cause personal injury or death. - Page 4 4 | Safety Warnings QV Series Heat Pumps CAUTION: PERSONAL INJURY HAZARD When servicing horizontal units do not remove top panel while unit is suspended as this compromises unit structure. If top panel removal is required for service, the base of the unit must be completely supported on a level surface strong enough to hold its weight.
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Page 5: Model Nomenclature
QV Series Heat Pumps Model Nomenclature | 5 MODEL NOMENCLATURE Fig. 1 Model Nomenclature Subject to change without prior notice QV Series Heat Pumps 8733829041 (2021/07) -
Page 6: General Description
QV series units are offered with a wide range of All units are certified by the Air-Conditioning, factory-installed options including: internal 2-way Heating, and Refrigeration Institute (AHRI) to valves;... -
Page 7: Inspecting And Storing The Equipment
Moving and Storage other discrepancies. If any are identified, contact If the equipment is not needed for immediate the Bosch Wholesaler/Distributor from which you installation upon its arrival at the job site, it should purchased the unit. be left in its shipping carton and stored in a clean and dry area. -
Page 8: Unit Installation
NOTICE: Do not use QV series units for temporary heating, air conditioning or ventilation during construction, especially NOTICE: QV series units are not approved when plastering, sanding or painting. -
Page 9: Protecting The Unit During Construction
It is generally not necessary to anchor the unit unless required by local code. All major service access for the QV Series vertical models is from the front side of the unit. When installing the unit in a confined space such as a closet, ensure that... -
Page 10: Mounting Horizontal (Hz) Units
10 | Horizontal (HZ) Units QV Series Heat Pumps NOTICE: Horizontal units installed above the ceiling must conform to all local codes. An auxiliary drain pan, if required by code, must be at least four inches larger than the bottom perimeter of the heat pump. -
Page 11: Installing The Hanging Bracket Kit
QV Series Heat Pumps Horizontal (HZ) Units | 11 NOTICE: If the unit is located in a crawl space, the bottom of the unit must be at least four inches above grade to prevent flooding of the electrical parts due to heavy rains. -
Page 12: Condensate Drain
NOTICE: Do not connect discharge ducts directly to the blower outlet. Fig. 10 Condensate Drain Installation DUCT SYSTEM All QV Series models are provided with a supply air outlet collar and return air duct flange to facilitate duct connections. Subject to change without prior notice... -
Page 13: Piping
QV Series Heat Pumps Piping | 13 PIPING All manual flow valves used in the system must be ball valves. Globe and gate valves must not be used Supply and return piping must be as large as the due to high-pressure drops and poor throttling unit connections on the heat pump (larger on long characteristics. -
Page 14: Flushing
14 | Electrical—power Supply Wiring QV Series Heat Pumps Flushing Antifreeze may be added before, during, or after the flushing process. Refer to the Antifreeze section below for more detail. WARNING: If equipped with a disconnect switch, de-energize unit by opening line... -
Page 15: Units With Dual Power Supplies
240-V to 208- V. Refer to the unit wiring diagram for details. The reversing valve on the QV series is energized when the unit is in cooling mode. Position Subject to change without prior notice... -
Page 16: Va Capacity
16 | Electrical—Low-Voltage Wiring QV Series Heat Pumps VA Capacity thermostats on an interior wall away from supply ducts. Unit heat pumps are supplied with a 50VA control transformer as a standard. Models with DDC, hot Avoid external walls and locations subject to direct gas reheat or an economizer are supplied with a 75 sunlight and drafts. -
Page 17: Remote Sensor To Programmable Thermostat
QV Series Heat Pumps Electrical—Low-Voltage Wiring | 17 Copper Wire Maximum Wire Length Gauge 46m (150 ft.) 22 AWG (0,33mm 73m (240 ft.) 20 AWG (0,50mm 117m (385 ft.) 18 AWG (0,75mm Table 3 Length by Wire Gauge for Thermostat to HVAC Equipment... -
Page 18: Ecm Interface Board
18 | Electrical—Low-Voltage Wiring QV Series Heat Pumps ECM Interface Board Thermostat wiring is connected to the 10-pin screw-type terminal block on the lower-center portion of the ECM Interface Board. In addition to providing a connecting point for thermostat wiring,... -
Page 19: Specific Application Considerations
QV Series Heat Pumps Specific Application Considerations | 19 SPECIFIC APPLICATION water well to supply both domestic water and the heat pump care must be taken to ensure that the CONSIDERATIONS well can provide sufficient flow for both. In well... -
Page 20: Open Well Water Systems
20 | Specific Application Considerations QV Series Heat Pumps Open Well Water Systems The discharge water from the heat pump is not When a water well is used exclusively for supplying contaminated in any manner and can be disposed water to the heat pump, operate the pump only of in various ways depending on local codes (i.e. -
Page 21: Cooling Tower/Boiler Systems
QV Series Heat Pumps Specific Application Considerations | 21 Cooling Tower/Boiler Systems (Refer to Fig. 14) NOTICE: Water piping exposed to extreme These systems typically use a common loop low ambient temperatures is subject to temperature maintained at 50°F to 100°F to freezing. -
Page 22: Geothermal Closed-Loop Systems
(Refer to Fig. 15) Operation of an QV Series unit on a closed loop application requires the extended range option. Refer to the GLP installation manuals for more specific instructions. -
Page 23: Water Quality Considerations
Maintaining proper water quality is required to loop installations. Iron bacteria fouling can quickly ensure proper operation of the QV series heat degrade system performance and plug heat pump. See the Water Qualify Table on page #24. - Page 24 24 | Water Quality Considerations QV Series Heat Pumps Water Quality Water Characteristic Acceptable Value POTENTIAL PROBLEM Copper Cupro-Nickel pH (Acidity/Alkalinity) 7–9 7–9 SCALING Hardness (CaCO , MgCO < 350 ppm < 350 ppm Ryznar Stability Index 6.0–7.5 6.0–7.5 Langelier Saturation Index -0.5 –...
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Page 25: Post-Installation System Checkout
QV Series Heat Pumps Post-Installation System Checkout | 25 POST-INSTALLATION SYSTEM 1. Connect services gases to suction and discharge pressure fittings. CHECKOUT 2. Energize the compressor. After completing the installation and before 3. The suction pressure should drop and the... -
Page 26: Start-Up
26 | Start-up QV Series Heat Pumps Unit Start Up Heating Mode Operating limits listed in the Unit Starting Conditions section are not suitable for Operate the unit in heating cycle after continuous operating conditions. Assume checking the cooling cycle. Allow five... -
Page 27: Safety Devices And The Upm Controller Overview
QV Series Heat Pumps Safety Devices and the UPM Controller Overview | 27 SAFETY DEVICES AND THE UPM CONTROLLER OVERVIEW If the thermostat is provided with a QV models are equipped with the Unit Protection malfunction light powered off of the... - Page 28 28 | Safety Devices and the UPM Controller Overview QV Series Heat Pumps • Evaporator freeze protection sensor, mounted • LOW-PRESSURE BYPASS TIMER: If the between the thermal expansion device and the compressor is running and the low-pressure evaporator, monitors refrigerant temperature...
- Page 29 QV Series Heat Pumps Safety Devices and the UPM Controller Overview | 29 • FREEZE SENSOR: The default setting for the • INTELLIGENT RESET: If a fault condition is freeze limit trip is 26°F (Sensor 1); however, initiated, the five-minute delay on break time this can be changed to 15°F by cutting the R30...
- Page 30 30 | Safety Devices and the UPM Controller Overview QV Series Heat Pumps Blinks Fault Fault Criteria None None All fault conditions normal Refrigerant discharge High pressure has exceeded 60 Pressure PSIG Refrigerant suction Pressure pressure has fallen below 40 PSIG...
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Page 31: Decstar® Motor Technology Overview
DecStar® Motor Technology Overview | 31 DECSTAR® MOTOR TECHNOLOGY OVERVIEW QV series is offered with a constant airflow ECM motor as standard feature. This standard feature provides ECM motor efficiency combined with a constant air delivery across a wide range of external static pressures. -
Page 32: Motor Performance Data
32 | DecStar® Motor Technology Overview QV Series Heat Pumps Motor Performance Data Default Motor Factory Model Speed Adjust Motor Setting 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 – — — QV024 Normal — —... -
Page 33: Options
The valve consists of two main parts: the valve body and the actuator. The valve body is brazed A number of options are available on QV Series of into the leaving water line of the heat pump and is Heat Pumps. The following details the purpose, a permanent part of the unit. - Page 34 The QV series economizer is designed for cooling only. If heating economizer operation is desired, consult the factory for applications and design information.
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Page 35: Maintenance
QV Series Heat Pumps Maintenance | 35 MAINTENANCE 4. Periodic lockouts almost always are caused by air or water flow problems. The lockout (shutdown) of the unit is a normal protective DANGER: Before performing service or measure in the design of the equipment. If... -
Page 36: Troubleshooting
36 | Troubleshooting QV Series Heat Pumps TROUBLESHOOTING Unit Troubleshooting NOTICE: If troubleshooting a system that is low on refrigerant due to a system leak, do not simply add refrigerant. The leak must be found and repaired per F-Gas regulation. - Page 37 QV Series Heat Pumps Troubleshooting | 37 Unit Troubleshooting Problem Mode Check Possible Action Cause Cooling Heating Low pressure Check water valves and/or pumps for fault—No or proper operation. Check for water coil low air flow blockage. Is the Fault...
- Page 38 38 | Troubleshooting QV Series Heat Pumps Unit Troubleshooting Problem Mode Check Possible Action Cause Cooling Heating Brown out Check primary voltage—Ensure it is fault—Low between the limits listed on the unit voltage data plate. supply Brown out Check control voltage—if below 18V Is the Fault fault—Bad...
- Page 39 QV Series Heat Pumps Troubleshooting | 39 Unit Troubleshooting Problem Mode Check Possible Action Cause Cooling Heating Open Check for supply voltage at the load compressor side of the contactor. For three-phase overload models check phase rotation and voltage at all three phases.
- Page 40 40 | Troubleshooting QV Series Heat Pumps Unit Troubleshooting Problem Mode Check Possible Action Cause Cooling Heating Check for 24 VAC between "G" and "C." Check all wiring connections. No fan operation Make sure that the thermostat signal connection plug is securely connected.
- Page 41 QV Series Heat Pumps Troubleshooting | 41 Unit Troubleshooting Problem Mode Check Possible Action Cause Cooling Heating EXCESSIVELY Dirty Filter Replace filter. COLD SUPPLY Fan speed Consult blower performance table and too low increase fan speed if possible. TEMPERATURE IN COOLING...
- Page 42 42 | Troubleshooting QV Series Heat Pumps Unit Troubleshooting Problem Mode Check Possible Action Cause Cooling Heating Poor Ensure the ductwork and grills are ductwork/ properly sized for the unit air flow. grill design Air noise Fan speed Consult blower performance table and setting too reduce fan speed if possible.
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Page 43: Specification Tables
QV Series Heat Pumps Specification Tables | 43 SPECIFICATION TABLES Operating Temperatures and Pressures Operating Temperatures and Pressures Cooling Heating Entering Water Water Suction Discharge Water Temp. Suction Discharge Temp. Temp. Water Temp. Pressure Pressure Temp. Drop Pressure Pressure Drop... - Page 44 44 | Specification Tables QV Series Heat Pumps Operating Temperatures and Pressures Cooling Heating Entering Water Water Suction Discharge Water Temp. Suction Discharge Temp. Temp. Water Temp. Pressure Pressure Temp. Drop Pressure Pressure Drop Rise Flow Model (°F) (PSIG) (PSIG) Rise (°F)
- Page 45 QV Series Heat Pumps Specification Tables | 45 Operating Temperatures and Pressures Cooling Heating Entering Water Water Water Suction Discharge Temp. Temp. Suction Discharge Temp. Temp. Water Temp. Pressure Pressure Rise Drop Pressure Pressure Drop Rise Flow Model (°F) (PSIG) (PSIG) (°F)
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Page 46: Water-Side Pressure Drop Table
46 | Specification Tables QV Series Heat Pumps Water-Side Pressure Drop Table Water-Side Pressure Water-Side Pressure Water Flow Model Drop without Drop with Internal Rate (GPM) Internal VaQVe (PSI) VaQVe (PSI) QV024 QV030 QV036 QV042 11.0 13.0 QV048 12.0 QV060 10.0... -
Page 47: Compressor Characteristics
QV Series Heat Pumps Specification Tables | 47 Compressor Characteristics Cold Winding Resistance Values (+/-10%) Voltage Model Single Phase Three Phase Capacitor Code (μF/V) T1–T2 T2–T3 T3–T1 1.83 — — — 35/370 1.30 1.64 — — — 35/370 QV024 1.45 2.17... -
Page 48: Corner Weights (Horizontal Cabinets Only)
48 | Specification Tables QV Series Heat Pumps Corner Weights (Horizontal Cabinets Only) Left-Hand Evaporator Right-Hand Evaporator Model Left Right Left Right Left Right Left Right Total Front Front Back Back Front Front Back Back lbs. 205.8 56.0 67.4 57.8 24.6... -
Page 49: Wiring Diagrams
QV Series Heat Pumps Wiring Diagrams | 49 WIRING DIAGRAMS EON Motors Fig. 18 One-Stage Single-Phase Unit with EON Motor FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. - Page 50 50 | Wiring Diagrams QV Series Heat Pumps Fig. 19 One-Stage Three-Phase Unit with EON Motor FOR REFERENCE ONLY Actual unit wiring may vary from this example. Always refer to the wiring diagram attached to the unit. Subject to change without prior notice...
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Page 51: Dimensional Drawings
QV Series Heat Pumps Dimensional Drawings | 51 DIMENSIONAL DRAWINGS Vertical Units Recommended Replacement Nominal Filter Size Condenser Water Connections Right Side Discharge Filter Rack Height R/A Duct Flange Height R/A Duct Width Condensate Drain Water Outlet Water Inlet Left Side to... -
Page 52: Horizontal Units
52 | Dimensional Drawings QV Series Heat Pumps Horizontal Units Left-Hand Return Unit Dimensions Recommended Replacement Nominal Filter Size Condenser Water Connections R/A Duct Flange Height Filter Rack Height Top to Discharge (FRE & FLS) End to Discharge (Straight) Discharge... - Page 53 QV Series Heat Pumps Dimensional Drawings | 53 Right-Hand Return Unit Dimensions Recommended Replacement Nominal Filter Size Condenser Water Connections R/A Duct Flange Height Filter Rack Height Top to Discharge (FRE & FLS) End to Discharge (Straight) Discharge Height Top to Discharge (FLE &...
- Page 54 54 | Dimensional Drawings QV Series Heat Pumps All dimensions within +-0.125”. All condensate drain connections are 3/4” FPT. Horizontal Units can be field converted between end blow and straight through supply air configurations. Specifications subject to change without notice.
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Page 55: Exploded Views For Spare Parts Selection
QV Series Heat Pumps Exploded Views for Spare Parts Selection | 55 EXPLODED VIEWS FOR SPARE PARTS SELECTION Main Components Exploded View Fig. 23 Main Components Exploded View Subject to change without prior notice QV Series Heat Pumps 8733829041 (2021/07) -
Page 56: Horizontal Cabinet Exploded View
56 | Exploded Views for Spare Parts Selection QV Series Heat Pumps Horizontal Cabinet Exploded View Fig. 24 Horizontal Cabinet Exploded View Subject to change without prior notice 8733829041 (2021/07) QV Series Heat Pumps... -
Page 57: Vertical Cabinet Exploded View
QV Series Heat Pumps Exploded Views for Spare Parts Selection | 57 Vertical Cabinet Exploded View Fig. 25 Vertical Cabinet Exploded View Subject to change without prior notice QV Series Heat Pumps 8733829041 (2021/07) -
Page 58: Terminology
58 | Terminology QV Series Heat Pumps TERMINOLOGY Reclamation — Means the reprocessing of a recovered fluorinated greenhouse gas in order to match the Acronyms equivalent performance of a virgin substance, taking into account its intended use. ASC — Anti-Short Cycle Recovery —... -
Page 59: Decommissioning Information
QV Series Heat Pumps Decommissioning Information | 59 DECOMMISSIONING INFORMATION Only trained and qualified technicians are allowed to decommission and dispose of equipment following the requirements and local codes. WARNING: Decommissioning of this equipment can be hazardous due to system pressure and electrical components. -
Page 60: Check-Out Sheet
60 | Check-Out Sheet QV Series Heat Pumps CHECK-OUT SHEET Customer Data Customer Name Date Address Phone Unit Number Unit Nameplate Data Unit Make Model Number Serial Number Refrigerant Charge (oz) Compressor: RLA Blower Motor: FLA (or NPA) Maximum Fuse Size (Amps) -
Page 61: Notes
QV Series Heat Pumps Notes | 61 NOTES Subject to change without prior notice QV Series Heat Pumps 8733829041 (2021/07) - Page 62 62 | Notes QV Series Heat Pumps NOTES Subject to change without prior notice 8733829041 (2021/07) QV Series Heat Pumps...
- Page 63 QV Series Heat Pumps Notes | 63 NOTES Subject to change without prior notice QV Series Heat Pumps 8733829041 (2021/07)
- Page 64 Bosch Thermotechnology Corp. 65 Grove Street, Watertown, MA 02472 Phone: +1 (800) 283-3787 | Fax: +1 (603) 965-7568 www.bosch-climate.us.com Revised 07/2021 8733829041...