Bosch EP024 User Manual

44 pages

To Next Page

To Next Page

Page #1 background image

Loading...

Page #1 background image

Installation and Maintenance Manual

EP Series

8733953041 (2019/01)

EP007, EP009, EP012, EP015, EP018, EP024, EP030, EP036, EP042, EP048, EP060,EP070

Table of Contents

Questions and Answers:

L
Lisa KimAug 17, 2025
What to do if my Bosch EP024 Heat Pump is off on high pressure control?
- T
  tammy41Aug 17, 2025
  If your Bosch Heat Pump shuts off due to high pressure, it could be due to several reasons. In cooling mode, check for inadequate water flow, excessively warm entering water temperature, or a scaled or plugged condenser. In heating mode, ensure adequate airflow by checking for an inoperative blower, clogged filter, or restrictions in the ductwork. Also, the unit might be overcharged with refrigerant, so reclaim the excess, evacuate, and recharge it with the factory-recommended amount. Finally, inspect the high-pressure switch for defects or improper calibration.
M
Mary StarkAug 22, 2025
Why is the blower operating but the compressor not in my Bosch EP024?
- H
  hatkinsonAug 22, 2025
  If your Bosch Heat Pump's blower is running but the compressor isn't, check the thermostat settings, calibration, and wiring. Inspect for loose or broken wires at the compressor, capacitor, or contactor. Check the UPM board's red default LED for a Blink Code. If the compressor is cool and the overload won't reset, it may need replacement. A compressor motor grounded internally to the shell also necessitates replacement. After the compressor cools, check the continuity of its windings; open windings indicate the need for a replacement.
T
Tina MarquezAug 27, 2025
What causes a Bosch Heat Pump to turn off on low pressure control?
- K
  Kurt MorenoAug 27, 2025
  If your Bosch Heat Pump is turning off due to low pressure, the suction pressure might be too low. In cooling mode, this could be due to inadequate airflow, excessively cold entering air temperature, an inoperative blower, a clogged filter, or ductwork restrictions. In heating mode, it could be due to inadequate water flow, excessively cold entering water temperature, or a scaled or plugged condenser. Also, the unit might be low on refrigerant, so check for leaks, repair them, evacuate the system, and recharge it with the factory-recommended amount. Finally, inspect the low-pressure switch for defects or improper calibration.
R
richard14Sep 1, 2025
Why does my Bosch EP024 Heat Pump unit short cycle?
- K
  Kiara OlsenSep 1, 2025
  If your Bosch Heat Pump is short cycling, it might be oversized for the space, so recalculate the heating and cooling loads. The thermostat could be installed near a supply air grill; if so, relocate it and readjust the heat anticipator. Also, check the wiring and controls for a defective or improperly calibrated low-pressure switch.

Bosch EP024 Specifications

General

Model Number	EP024
Category	Heat Pump
Refrigerant	R410A
Dimensions (HxWxD)	800 x 600 x 300 mm
Noise Level	45 dB

Summary

Installation

Mounting Vertically

Instructions for vertically mounting EP Series units, including pad requirements.

Mounting Horizontally

Instructions for horizontally mounting EP Series units, including ceiling suspension.

Hanging Bracket Kit

Condensate Drain

Proper connection and installation of the condensate drain line.

Duct System

Piping

Electrical

Requirements for field wiring, power supply, and grounding.

Thermostat Connections

Wiring instructions for connecting thermostats to the unit's control interface.

Safety Devices and the UPM Controller

UPM Controller Features

Details on UPM board settings, timers, and protection features like freeze sensing.

Electronic Thermostat Installation

Thermostat Wiring

UPM Sequence of Operation

Cooling Mode Operation

Heating Mode Operation

Electric Heater Package Option

Heat Recovery Package

Application Considerations

Installation of Pressure Regulating Valves

Geothermal (Earth-Coupled) Systems

System Checkout

Unit Start-Up

Procedures for performing a final system checkout and unit startup.

Maintenance

Troubleshooting

Unit Troubleshooting

Common problems, possible causes, and checks for troubleshooting.

Refrigerant Pressure Ranges

Wiring Diagrams

Electric Heat Wiring Diagram

Related product manuals

Preview: Bosch EP015

Preview: Bosch EP Series

Bosch EP Series

Bosch FHP EC120

Bosch FHP EC096

Bosch FHP EC151

Preview: Bosch EHP 6.5 AA

Bosch EHP 6.5 AA

Bosch FHP ES036 Series