Maintenance Overview
The Greenheck PVe Heat Recovery Ventilator is quite simply an interface unit that takes in outdoor air and either heats or cools that air and then delivers that air into the building HVAC system for further heating or cooling. The heating and cooling that is done in this unit is accomplished by taking heat energy out of the air being exhausted to the outdoors and transferring that heat energy to the incoming replacement air. If the outdoor air is being used for cooling, some of the heat energy is transferred from the incoming warm outdoor air to the exhaust air.
Most all the components found in this unit are typical of what would normally be found in other air handlers. There is an air propulsion system consisting of
two belt driven blowers; one to draw in outdoor air through the Plate Heat Exchanger, and the other to draw stale indoor air from the building through the Plate Heat Exchanger and then exhaust it. There are various optional motorized dampers and sensors that may also be found in the unit.
The heart of the PVe unit is the Plate Heat Exchanger and this is the component that actually accomplishes heat energy recovery. It has no moving parts and the only real maintenance issues are to keep the internal surfaces clean and to protect the aluminum plates from damage.
In addition to the typical maintenance issues shown in following pages, periodic visual inspection of the Plate Heat Exchanger is required. Such visual inspections should be recorded and record made of any observations.
The surfaces of the flat aluminum plates within the Plate Heat Exchanger permit complete visual inspection of both supply and exhaust sides of the unit. Small amounts of dust present in either side of the Plate Heat Exchanger will not affect performance. If appreciable amounts of dust or dirt accumulate, the Plate Heat Exchanger can be cleaned with hot water (180ºF) or a detergent that does not damage aluminum surfaces. Spray water evenly across the surfaces at a pressure between 22 and 55 psig. Do not force sharp objects against the heat transfer surfaces or damage to the flat plates may occur.
22Model PVe Heat Recovery Unit