Operation and Maintenance Manual, OnyX Sky Heat Recovery Units, 2022/01
Frapol Sp. z o.o. reserves the right to introduce changes without any prior notice.
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NOTE
In regions characterised by high dust levels in the air, it is recommended to check the condition of the
filtration textile more frequently.
NOTE
During the inspection, check that none of the filter cartridges has been torn (e.g. from excessive soiling).
NOTE
Regular replacement of filters is essential to maintain the correct performance parameters and energy
efficiency of your system
.
NOTE
HRUs
with the nominal capacity of <1000m3/h are equipped with a filter replacement warning system
controlled by a timer. In HRUs with the nominal capacity of >1000m3/h, a warning signal is activated,
when the final value of pressure drop in the filter is exceeded.
7.2
Heat recovery system
The condition of the heat exchanger should be checked once every six months. If necessary, clean the heat exchanger with
compressed air or a vacuum cleaner. Check also whether the condensate trap is dirty, the water trap is unobstructed and filled
with water, and the bypass damper rotates freely.
7.3
Electric heater.
The level of soiling in the heater should be checked on a quarterly basis. This operation may only be carried out, when power
supply to the unit has been disconnected. If necessary, clean the heater with compressed air (directing its flow in the opposite
direction to the normal direction of air flow and parallel to the louvres) or with a vacuum cleaner with a soft nozzle. The heater is
an electric device subject to periodical inspection, in accordance with applicable regulations.
8.
Control system
8.1
Scope of delivery
•
Integrated power and control system including the Frapol SMART microprocessor controller and a set of instruments to
control the components built into the Heat Recovery Unit
•
Operating panel with a 15 lin.m. long wire (YTKSYekw 2x2x0.8)
•
Power outlet with a main switch
•
Power supply connection cable terminated with a plug (1x230VAC)
•
Power supply and control system for the electric heater (in the case of a built-in heater)
