How to prevent water hammer in my Bosch Heat Pump system?
- AAmanda HopkinsSep 14, 2025
To prevent water hammer in your Bosch Heat Pump system, change any fast-closing valves to slow-close type valves.

How to prevent water hammer in my Bosch Heat Pump system?
To prevent water hammer in your Bosch Heat Pump system, change any fast-closing valves to slow-close type valves.
Fold-out flanges for easier access and transport protection.
Level mounting on vibration pad, minimize vibration transmission to structure.
Suspended above ceiling by threaded rods using hanger bracket kits.
Connects thermostat wiring and translates inputs for ECM motor.
Various terminal connections for thermostat functions like Y1, G, O, W1, C.
Adjusts airflow to meet application needs and aids troubleshooting.
Selects between hot gas reheat or fan speed reduction for dehumidification.
Detailed flowchart illustrating unit start-up and operational logic.
Controls operation via 1-heat/1-cool thermostat, uses 24 VAC control voltage.
Explains reversing valve operation for cooling and heating modes.
Monitors evaporator coil temp, shuts down compressor on freeze condition.
Monitors water coil temp, shuts down compressor on freeze condition.
Sensor in drain pan detects overflow, triggers unit shutdown.
Allows operation at more extreme fluid temperatures.
Optional switch for field electrical wiring to de-energize the unit.
Provides active dehumidification by reheating cooled air.
Factory mounted DDC controls available as an option.
Motorized water valve for heat pump water circuit control.
Assures adequate cooling/heating performance by maintaining loop temperatures.
Requires extended range option for closed loop applications.
Standard three-speed motor for SV series heat pumps.
Electronically commutated brushless DC motor offering efficiency and flat fan curve.
Provides dimensions and connection details for vertical models.
Provides dimensions and connection details for horizontal models.
Provides dimensions and connection details for counter-flow models.